Secondary Response Spectra
|
|
- Linda Shonda Walton
- 6 years ago
- Views:
Transcription
1 Task NA 3.6 Preparatory Course on Seismic Qualification Bristol, January 2011 Secondary Response Spectra Prof. Colin Taylor, University of Bristol Paul Johnston, Atkins
2 Scope Response spectra Modelling and analysis methods Manipulating the output Uncertainties Codes Outline Fundamentals Input Damping Subsystems Analysis Example
3 Fundamentals
4 Fundamentals Dynamic Amplification
5 Fundamentals Response Spectra Response of an infinite series of damped elastic SDOF systems Graphs of the maximum values of acceleration, velocity, and/or displacement maximum response values for several levels of damping plotted against undamped natural frequency or period
6 Fundamentals Response Spectra 0.4 PML Horizontal Response Spectra for 5% damping Acceleration (g) Velocity (cm/s) Displacement (cm) Frequency (Hz) Frequency (Hz)
7 Fundamentals Secondary Response Spectra John Sherstobitoff
8 Fundamentals Why Secondary Response Spectra? Non structural elements difficult to analyse Complex Relatively small Large models required Different design teams/companies
9 Fundamentals Quick View Synthesise time histories Compute motion at point of interest Compute secondary response spectra
10 Input
11 Input Data Input data definition UK Nuclear Areas of high seismicity Time histories Real Artificial
12 Input PML Response Spectra PML Horizontal Response Spectra for 5% damping (vertical is 2/3 of horizontal) Acceleration (g) Hard Site Medium Site Soft Site Frequency (Hz)
13 Input UHS Response Spectra Mean normalized uniform hazard spectra
14 Input Artificial time history for analysis Acceleration 10 to 15 Seconds
15 Input Real Response Spectra Pseudo-acceleration linear response spectra plots, ~ , 1940 El Centro SOOE component, from Chopra (1981)
16 Input Real Time History
17 Damping
18 Damping Damping levels depend on stress levels in structure Level 1 low stress Level 2 high stress Main structural damping ASCE 4, ASCE 43 Equipment damping ASCE 43
19 Damping Effect of Damping Levels
20 Damping Type of Component Level 1 Level 2 Reinforced concrete structures 4 7 Electrical cabinets and other equipment 3 4 Piping 5 5 Massive low stressed mechanical components 2 3 Cable trays 5 10
21 Subsystems
22 Subsystems Subsystems In structure response spectra Acceleration (g) 0.8 7% Response Frequency (Hz)
23 Subsystems Non structural Incorporation in structural model?
24 Subsystems Simple analysis example Simple Mass/spring system K1 = 1000; M1 = 10 K1 M1
25 Subsystems Simple Mass spring system K1 M1 ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
26 Subsystems Simple analysis example Simple Mass/spring system Case 1 K1 = 1000; M1 = 10 K2 = 100; M2 = 1 K1 M1 K2 M2
27 Subsystems Simple Mass spring system K1 M1 K2 M2 ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
28 Subsystems Simple analysis example Simple Mass/spring system Case 2 K1 = 1000; M1 = 10 K2 = 1000; M2 = 10 K1 M1 K2 M2
29 Subsystems Case 2 K1 M1 K2 M2 ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 in p ut
30 Analysis
31 Analysis Soil Structure Interaction PML Horizontal Response Spectra for 5% damping (vertical is 2/3 of horizontal) Acceleration (g) Hard Site Medium Site Soft Site Frequency (Hz)
32 Analysis Use of FEA Time stepping analysis Step by step Reduced linear (modal) Modal analysis Calculation of mode shapes and mass participation Reduced time history analysis Compute secondary response spectra Manipulate response spectra
33 Analysis Structural Model Structural model 3D Includes mass Stiffness modelling torsion Inclusion of sub-system Increases complexity of the model
34 Analysis Structural Model
35 Analysis Time History Input time history suite Compute artificial time history Adjust real time history using wavelets Use real time histories Rules in the codes
36 Time History Analysis Time histories for each analysis 2 Horizontal 1 Vertical Statistically independent Applied simultaneously More than one set
37 Analysis Calculating Response Spectra Calculation of response of an SDOF Spv ( ξ, ω) = y"( τ )sinω( t τ )exp ξω( t τ ) dτ max Clough & Penzein Calculation by numerical methods
38 Analysis Calculating Response Spectra How many frequencies should be used Frequency Separation on frequencies Always use natural frequencies of the main system (structure)
39 Time History Analysis Data handling 3 directions 3 input time histories per direction 10 locations of interest for equipment 90 output time histories 3 damping levels of interest 270 response spectra Simplify by Averaging enveloping
40 Analysis Output Data from: 3 directions H1, H2, V One or more analyses -1, -2 etc A number of locations, A, B etc H1-1 A; H2-1 A; V-1 A H1-2 A; H2-2 A; V-2 A
41 Analysis Output Response Spectra Data for 3 directions (H1, H2, V) remain and are treated separately initially Data from analyses (1,2,3 etc) - averaged Data from different locations (A, B, C, etc) enveloped
42 Analysis Output Response Spectra 2 Mass system ACCELERATION RESPONSE SPECTRA 3 input TH Mass M2 K Mass 1 M K FREQUENCY (Hz)
43 Analysis Averaging Averaging results from 3 time histories M2 K2 M1 K1 ACCELERATION RESPONSE SPECTRA ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) FREQUENCY (Hz)
44 Analysis Uncertainties Uncertainties in the analysis of the main structural analysis Uncertainties from Material properties Damping Approximations of modelling SSI Lower bound Best estimate Upper Bound
45 Analysis Uncertainties Peak broadening Applying +-15% f i (in lieu of detailed analysis) Use best estimate SSI analysis only Peak lopping Reduce peak spectral response by 15% in lieu of more detailed assessment Peak shifting A number of analyses using different spectra either side of the calculated response spectra Mode by mode analysis Less conservative potentially
46 Analysis Output Response Spectra ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz)
47 Analysis Enveloped, broadened spectra Broadened Response Spectra Acceleration (g) Frequency (Hz)
48 Analysis Enveloped, broadened spectra
49 Analysis Alternative Procedure Singh method (1975); based on random vibration theory Uses modal amplification factors to modify ground response spectrum
50 Analysis Codes ASCE 4-98 Seismic analysis of safety related nuclear structures ASCE/SEI Seismic Design Criteria for Structures, Systems and Components in Nuclear Facilities ASME III Appendix N Dynamic Analysis
51 Analysis Rules of thumb UK HPGA ~ 0.25g Approximate magnification factor ~ 5% damping At low damping levels of equipment and structural analysis, high magnifications possible
52 Example Stera3D by Dr Taiki SAITO, Building Research Institute, Japan
53 Example
54 Example
55 Example
56 Example
57 Example
58 Example El Centro X ACCELERATIONS 8.00E E E E E E E E E TIME (s) mass1 mass2 mass3 mass4 mass5 mass6 input
59 Example Kobe X ACCELERATIONS 1.50E E E E E E TIME (s) mass1 mass2 mass3 mass4 mass5 mass6
60 Example El Centro X dir ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
61 Example Kobe X dir ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
62 Example El Centro Y dir ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
63 Example Kobe Y dir ACCELERATION RESPONSE SPECTRA FREQUENCY (Hz) mass1 mass2 mass3 mass4 mass5 mass6 input
64 Example El Centro/Kobe X Spectra Response Spectra for 5% damping 450 Acceleration Frequency (Hz) TH1 TH2 TH3 TH4 TH5 TH6 TH7 TH8 TH9 TH10 TH11 TH12 TH13 TH14 TH15 TH16 TH17 TH18 TH19 TH20 Env 5%
65 Example El Centro/Kobe X Spectra - averaged Response Spectra for 5% damping 450 Acceleration TH1 TH2 TH3 TH4 TH5 TH6 TH7 TH8 TH9 TH10 TH11 TH12 TH13 TH14 TH15 TH16 TH17 TH TH19 TH20 Env 5% 400 Response Spectra for 5% damping averaged Frequency (Hz) Acceleration TH1 TH2 TH3 TH4 TH5 TH6 TH7 TH8 TH9 TH10 TH11 TH12 TH13 TH14 TH15 TH16 TH17 TH18 TH19 TH20 Env 7% SERIES Training Frequency Course (Hz) - Bristol, Jan
66 Example Envelope results 1&2 3&4 5&7 floors Enveloped Response Spectra Acceleration (g) Frequency (Hz)
67 Example Broadened Spectra Top floor 5% Response Spectra Acceleration Frequency (Hz)
68 Example Broadened Spectra 3 levels Broadened Response Spectra Acceleration Frequency (Hz)
69 Questions
Dynamics of Structures
Dynamics of Structures Elements of structural dynamics Roberto Tomasi 11.05.2017 Roberto Tomasi Dynamics of Structures 11.05.2017 1 / 22 Overview 1 SDOF system SDOF system Equation of motion Response spectrum
More informationDesign of Structures for Earthquake Resistance
NATIONAL TECHNICAL UNIVERSITY OF ATHENS Design of Structures for Earthquake Resistance Basic principles Ioannis N. Psycharis Lecture 3 MDOF systems Equation of motion M u + C u + K u = M r x g(t) where:
More informationIn-Structure Response Spectra Development Using Complex Frequency Analysis Method
Transactions, SMiRT-22 In-Structure Response Spectra Development Using Complex Frequency Analysis Method Hadi Razavi 1,2, Ram Srinivasan 1 1 AREVA, Inc., Civil and Layout Department, Mountain View, CA
More informationSingle-Degree-of-Freedom (SDOF) and Response Spectrum
Single-Degree-of-Freedom (SDOF) and Response Spectrum Ahmed Elgamal 1 Dynamics of a Simple Structure The Single-Degree-Of-Freedom (SDOF) Equation References Dynamics of Structures, Anil K. Chopra, Prentice
More informationStochastic Structural Dynamics Prof. Dr. C. S. Manohar Department of Civil Engineering Indian Institute of Science, Bangalore
Stochastic Structural Dynamics Prof. Dr. C. S. Manohar Department of Civil Engineering Indian Institute of Science, Bangalore Lecture No. # 32 Probabilistic Methods in Earthquake Engineering-1 (Refer Slide
More informationSHAKING TABLE TEST OF STEEL FRAME STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS
3 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August -6, 24 Paper No. 354 SHAKING TABLE TEST OF STEEL FRAME STRUCTURES SUBJECTED TO NEAR-FAULT GROUND MOTIONS In-Kil Choi, Young-Sun
More informationMissing Mass in Dynamic Analysis
Missing Mass in Dynamic Analysis Introduction: The common practice of performing a dynamic analysis of a structure is to evaluate the response of a structure mode by mode and then combining the results
More informationPreliminary Examination - Dynamics
Name: University of California, Berkeley Fall Semester, 2018 Problem 1 (30% weight) Preliminary Examination - Dynamics An undamped SDOF system with mass m and stiffness k is initially at rest and is then
More informationEarthquake Loads According to IBC IBC Safety Concept
Earthquake Loads According to IBC 2003 The process of determining earthquake loads according to IBC 2003 Spectral Design Method can be broken down into the following basic steps: Determination of the maimum
More informationNONLINEAR SEISMIC SOIL-STRUCTURE (SSI) ANALYSIS USING AN EFFICIENT COMPLEX FREQUENCY APPROACH
NONLINEAR SEISMIC SOIL-STRUCTURE (SSI) ANALYSIS USING AN EFFICIENT COMPLEX FREQUENCY APPROACH Dan M. GHIOCEL 1 ABSTRACT The paper introduces a novel approach for modeling nonlinear hysteretic behavior
More informationPreliminary Examination in Dynamics
Fall Semester 2017 Problem 1 The simple structure shown below weighs 1,000 kips and has a period of 1.25 sec. It has no viscous damping. It is subjected to the impulsive load shown in the figure. If the
More informationDesign of Earthquake-Resistant Structures
NATIONAL TECHNICAL UNIVERSITY OF ATHENS LABORATORY OF EARTHQUAKE ENGINEERING Design of Earthquake-Resistant Structures Basic principles Ioannis N. Psycharis Basic considerations Design earthquake: small
More informationIntroduction to structural dynamics
Introduction to structural dynamics p n m n u n p n-1 p 3... m n-1 m 3... u n-1 u 3 k 1 c 1 u 1 u 2 k 2 m p 1 1 c 2 m2 p 2 k n c n m n u n p n m 2 p 2 u 2 m 1 p 1 u 1 Static vs dynamic analysis Static
More informationEXPERIMENTAL STUDY FOR MCCs IN TAIWAN LUNGMEN NUCLEAR POWER PLANT
Transactions, SMiRT- San Francisco, California, USA - August 8-, EXPERIMENTAL STUDY FOR MCCs IN TAIWAN LUNGMEN NUCLEAR POWER PLANT Zi-Yu Lai, Juin-Fu Chai, Fan-Ru Lin, Ming-Yi Chen, and Pai-Fang Chou National
More informationEMEA. Liudmila Feoktistova Engineer Atomenergoproekt
EMEA Liudmila Feoktistova Engineer Atomenergoproekt Dr. Adolf Birbraer, Atomenergoproekt Dr. Alexandr Roleder, Atomenergoproekt Dmitry Mikhaluk, St. Petersburg State Polytechnical University Finite element
More information2C09 Design for seismic and climate changes
2C09 Design for seismic and climate changes Lecture 08: Seismic response of SDOF systems Aurel Stratan, Politehnica University of Timisoara 13/03/2014 European Erasmus Mundus Master Course Sustainable
More informationExamining the Adequacy of the Spectral Intensity Index for Running Safety Assessment of Railway Vehicles during Earthquakes
October 1-17, 8, Beijing, China Examining the Adequacy of the Spectral Intensity Index for Running Safety Assessment of Railway Vehicles during Earthquakes Xiu LUO 1 and Takefumi MIYAMOTO 1 Dr. Eng., Senior
More informationAn Evaluation of the Force Reduction Factor in the Force-Based Seismic Design
An Evaluation of the Force Reduction Factor in the Force-Based Seismic Design Gakuho Watanabe and Kazuhiko Kawashima Tokyo Institute of Technology, O-Okayama, Meguro, Tokyo, Japan, 5-55 ABSTRACT This paper
More informationSTATIC NONLINEAR ANALYSIS. Advanced Earthquake Engineering CIVIL-706. Instructor: Lorenzo DIANA, PhD
STATIC NONLINEAR ANALYSIS Advanced Earthquake Engineering CIVIL-706 Instructor: Lorenzo DIANA, PhD 1 By the end of today s course You will be able to answer: What are NSA advantages over other structural
More information2C09 Design for seismic and climate changes
2C09 Design for seismic and climate changes Lecture 07: Seismic response of SDOF systems Aurel Stratan, Politehnica University of Timisoara 06/04/2017 European Erasmus Mundus Master Course Sustainable
More informationProb. 1 SDOF Structure subjected to Ground Shaking
Prob. 1 SDOF Structure subjected to Ground Shaking What is the maximum relative displacement and the amplitude of the total displacement of a SDOF structure subjected to ground shaking? magnitude of ground
More informationSHOCK RESPONSE OF MULTI-DEGREE-OF-FREEDOM SYSTEMS Revision F By Tom Irvine May 24, 2010
SHOCK RESPONSE OF MULTI-DEGREE-OF-FREEDOM SYSTEMS Revision F By Tom Irvine Email: tomirvine@aol.com May 4, 010 Introduction The primary purpose of this tutorial is to present the Modal Transient method
More informationDesign Spectra. Reading Assignment Course Information Lecture Notes Pp Kramer Appendix B7 Kramer
Design Spectra Page 1 Design Spectra Reading Assignment Course Information Lecture Notes Pp. 73-75 Kramer Appendix B7 Kramer Other Materials Responsespectra.pdf (Chopra) ASCE 7-05.pdf Sakaria time history
More informationDYNAMIC RESPONSE OF EARTHQUAKE EXCITED INELASTIC PRIMARY- SECONDARY SYSTEMS
DYNAMIC RESPONSE OF EARTHQUAKE EXCITED INELASTIC PRIMARY- SECONDARY SYSTEMS Christoph ADAM 1 And Peter A FOTIU 2 SUMMARY The objective of the paper is to investigate numerically the effect of ductile material
More informationSeismic Evaluation of Auxiliary Buildings and Effects of 3D Locational Dynamic Response in SPRA
Seismic Evaluation of Auxiliary Buildings and Effects of 3D Locational Dynamic Response in SPRA PSA 2017, Pittsburgh September 25 th, 2017 Brian Cohn Jieun Hur, Eric Althoff, Halil Sezen, and Richard Denning
More informationFrequency response analysis of soil-structure interaction for concrete gravity dams
Frequency response analysis of soil-structure interaction for concrete gravity dams Anna De Falco 1, Matteo Mori 2 and Giacomo Sevieri 3 1 Dept. of Energy, Systems, Territory and Construction Engineering,
More informationCOMPARATIVE STUDIES ON SEISMIC INCOHERENT SSI ANALYSIS METHODOLOGIES
Transactions, SMiRT-22 COMPARATIVE STUDIES ON SEISMIC INCOHERENT SSI ANALYSIS METHODOLOGIES Dan M. Ghiocel 1 1 Ghiocel Predictive Technologies, Inc., Rochester, New Yor, USA (dan.ghiocel@ghiocel-tech.com)
More informationHarmonized European standards for construction in Egypt
Harmonized European standards for construction in Egypt EN 1998 - Design of structures for earthquake resistance Jean-Armand Calgaro Chairman of CEN/TC250 Organised with the support of the Egyptian Organization
More informationRELATIONSHIP OF SEISMIC RESPONSES AND STRENGTH INDEXES OF GROUND MOTIONS FOR NPP STRUCTURES
RELATIONSHIP OF SEISMIC RESPONSES AND STRENGTH INDEXES OF GROUND MOTIONS FOR NPP STRUCTURES Seckin Ozgur CITAK 1 Hiroshi KAWASE 2 and Shinya IKUTAMA 3 1 Research Engineer, Ohsaki Research Institute, Inc.,
More informationA Modified Response Spectrum Analysis Procedure (MRSA) to Determine the Nonlinear Seismic Demands of Tall Buildings
Fawad A. Najam Pennung Warnitchai Asian Institute of Technology (AIT), Thailand Email: fawad.ahmed.najam@ait.ac.th A Modified Response Spectrum Analysis Procedure (MRSA) to Determine the Nonlinear Seismic
More informationCodal Provisions IS 1893 (Part 1) 2002
Abstract Codal Provisions IS 1893 (Part 1) 00 Paresh V. Patel Assistant Professor, Civil Engineering Department, Nirma Institute of Technology, Ahmedabad 38481 In this article codal provisions of IS 1893
More informationRESPONSE SPECTRUM METHOD FOR ESTIMATION OF PEAK FLOOR ACCELERATION DEMAND
RESPONSE SPECTRUM METHOD FOR ESTIMATION OF PEAK FLOOR ACCELERATION DEMAND Shahram Taghavi 1 and Eduardo Miranda 2 1 Senior catastrophe risk modeler, Risk Management Solutions, CA, USA 2 Associate Professor,
More informationASCE 7-16 / 2015 NEHRP Provisions Chapter 19: Soil-Structure Interaction. Robert Pekelnicky, PE, SE Principal, Degenkolb Engineers February 11, 2015
ASCE 7-16 / 2015 NEHRP Provisions Chapter 19: Soil-Structure Interaction Robert Pekelnicky, PE, SE Principal, Degenkolb Engineers February 11, 2015 Soil-Structure Interaction Foundation Force-Deformation
More informationANALYSIS OF HIGHRISE BUILDING STRUCTURE WITH SETBACK SUBJECT TO EARTHQUAKE GROUND MOTIONS
ANALYSIS OF HIGHRISE BUILDING SRUCURE WIH SEBACK SUBJEC O EARHQUAKE GROUND MOIONS 157 Xiaojun ZHANG 1 And John L MEEK SUMMARY he earthquake response behaviour of unframed highrise buildings with setbacks
More informationInelastic shear response of RC coupled structural walls
Inelastic shear response of RC coupled structural walls E. Morariu EDIT Structural, Bucuresti, Rumania. T. Isakovic, N. Eser & M. Fischinger Faculty of Civil and Geodetic Engineering, University of Ljubljana,
More informationNumerical Modelling of Dynamic Earth Force Transmission to Underground Structures
Numerical Modelling of Dynamic Earth Force Transmission to Underground Structures N. Kodama Waseda Institute for Advanced Study, Waseda University, Japan K. Komiya Chiba Institute of Technology, Japan
More informationOptimized PSD Envelope for Nonstationary Vibration Revision A
ACCEL (G) Optimized PSD Envelope for Nonstationary Vibration Revision A By Tom Irvine Email: tom@vibrationdata.com July, 014 10 FLIGHT ACCELEROMETER DATA - SUBORBITAL LAUNCH VEHICLE 5 0-5 -10-5 0 5 10
More informationSevere accident risk assessment for Nuclear. Power Plants
PSA 2017- September 2017 IRSN Severe accident risk assessment for Nuclear * Power Plants * Enhancing nuclear safety An original approach to derive seismic fragility curves - Application to a PWR main steam
More informationEXAMPLE OF PILED FOUNDATIONS
EXAMPLE OF PILED FOUNDATIONS The example developed below is intended to illustrate the various steps involved in the determination of the seismic forces developed in piles during earthquake shaking. The
More informationDynamic behavior of turbine foundation considering full interaction among facility, structure and soil
Dynamic behavior of turbine foundation considering full interaction among facility, structure and soil Fang Ming Scholl of Civil Engineering, Harbin Institute of Technology, China Wang Tao Institute of
More informationSTUDY ON THE BI-NORMALIZED EARTHQUAKE ACCELERATION RESPONSE SPECTRA
th World Conference on Earthquake Engineering Vancouver, B.C., Canada August -6, Paper No. 59 STUDY ON THE BI-NORMALIZED EARTHQUAKE ACCELERATION RESPONSE SPECTRA XU Longjun, XIE Lili, SUMMARY The determination
More informationEQ Ground Motions. Strong Ground Motion and Concept of Response Spectrum. March Sudhir K Jain, IIT Gandhinagar. Low Amplitude Vibrations
Amplitude Strong Ground Motion and Concept of Response Spectrum March 2013 Sudhir K Jain, IIT Gandhinagar Sudhir K. Jain March 2013 1 EQ Ground Motions Low Amplitude Vibrations Long distance events Usually
More information1. Multiple Degree-of-Freedom (MDOF) Systems: Introduction
1. Multiple Degree-of-Freedom (MDOF) Systems: Introduction Lesson Objectives: 1) List examples of MDOF structural systems and state assumptions of the idealizations. 2) Formulate the equation of motion
More informationChapter 23: Principles of Passive Vibration Control: Design of absorber
Chapter 23: Principles of Passive Vibration Control: Design of absorber INTRODUCTION The term 'vibration absorber' is used for passive devices attached to the vibrating structure. Such devices are made
More informationTHREE-DIMENSIONAL CRITICAL SEISMIC GROUND ACCELERATION TIME HISTORIES FOR HIGH-TECH FACILITIES
4th International Conference on Earthquake Engineering Taipei, Taiwan October 2-3, 26 Paper No. 79 THREE-DIMENSIONAL CRITICAL SEISMIC GROUND ACCELERATION TIME HISTORIES FOR HIGH-TECH FACILITIES You-Lin
More informationDistribution Restriction Statement Approved for public release; distribution is unlimited.
CECW-ET Engineer Manual 1110-2-6050 Department of the Army U.S. Army Corps of Engineers Washington, DC 20314-1000 EM 1110-2-6050 30 June 1999 Engineering and Design RESPONSE SPECTRA AND SEISMIC ANALYSIS
More informationFREQUENCIES AND DAMPING RATIOS OF A HIGH RISE BUILDING BASED ON MICROTREMOR MEASUREMENT
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 48 FREQUENCIES AND DAMPING RATIOS OF A HIGH RISE BUILDING BASED ON MICROTREMOR MEASUREMENT Toshiharu
More informationTWO-STAGE ISOLATION FOR HARMONIC BASE EXCITATION Revision A. By Tom Irvine February 25, 2008
TWO-STAGE ISOLATION FOR HARMONIC BASE EXCITATION Revision A By Tom Irvine Email: tomirvine@aol.com February 5, 008 Introduction Consider a base plate mass m and an avionics mass m modeled as two-degree-of-freedom.
More informationThe Effect of Using Hysteresis Models (Bilinear and Modified Clough) on Seismic Demands of Single Degree of Freedom Systems
American Journal of Applied Sciences Original Research Paper The Effect of Using Hysteresis Models (Bilinear and Modified Clough) on Seismic Demands of Single Degree of Freedom Systems 1 Ahmad N. Tarawneh,
More informationBOĞAZİÇİ UNIVERSITY KANDILLI OBSERVATORY AND EARTHQUAKE RESEARCH INSTITUTE CHANGING NEEDS OF ENGINEERS FOR SEISMIC DESIGN
BOĞAZİÇİ UNIVERSITY KANDILLI OBSERVATORY AND EARTHQUAKE RESEARCH INSTITUTE CHANGING NEEDS OF ENGINEERS FOR SEISMIC DESIGN Erdal Şafak Department of Earthquake Engineering Kandilli Observatory and Earthquake
More informationChapter 4 Analysis of a cantilever
Chapter 4 Analysis of a cantilever Before a complex structure is studied performing a seismic analysis, the behaviour of simpler ones should be fully understood. To achieve this knowledge we will start
More informationINELASTIC RESPONSE SPECTRA FOR BIDIRECTIONAL GROUND MOTIONS
October 1-17, 008, Beijing, China INELASTIC RESPONSE SPECTRA FOR BIDIRECTIONAL GROUND MOTIONS WANG Dong-sheng 1 LI Hong-nan WANG Guo-in 3 Fan Ying-Fang 4 1 Professor,Iinstitute of Road and Bridge Eng.,
More informationINVESTIGATION OF JACOBSEN'S EQUIVALENT VISCOUS DAMPING APPROACH AS APPLIED TO DISPLACEMENT-BASED SEISMIC DESIGN
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 228 INVESTIGATION OF JACOBSEN'S EQUIVALENT VISCOUS DAMPING APPROACH AS APPLIED TO DISPLACEMENT-BASED
More informationDirect Fatigue Damage Spectrum Calculation for a Shock Response Spectrum
Direct Fatigue Damage Spectrum Calculation for a Shock Response Spectrum By Tom Irvine Email: tom@vibrationdata.com June 25, 2014 Introduction A fatigue damage spectrum (FDS) was calculated for a number
More informationPROBABILISTIC-DETERMINISTIC SSI STUDIES FOR SURFACE AND EMBEDDED NUCLEAR STRUCTURES ON SOIL AND ROCK SITES
Transactions, SMiRT-23 Manchester, United Kingdom - August 10-14, 2015 Division V PROBABILISTIC-DETERMINISTIC SSI STUDIES FOR SURFACE AND EMBEDDED NUCLEAR STRUCTURES ON SOIL AND ROCK SITES Dan M. Ghiocel
More informationGiacomo Boffi. Dipartimento di Ingegneria Civile Ambientale e Territoriale Politecnico di Milano
http://intranet.dica.polimi.it/people/boffi-giacomo Dipartimento di Ingegneria Civile Ambientale e Territoriale Politecnico di Milano April 21, 2017 Outline of Structural Members Elastic-plastic Idealization
More informationApplication of Capacity Spectrum Method to timber houses considering shear deformation of horizontal frames
Application of Capacity Spectrum Method to timber houses considering shear deformation of horizontal frames Kawai, N. 1 ABSTRACT Relating to the revision of Building Standard Law of Japan, the application
More informationPARAMETERS CHARACTERIZING THE SEISMIC DEMAND FOR EARTHQUAKE DAMAGE SCENARIO EVALUATION
PARAMETERS CHARACTERIZING THE SEISMIC DEMAND FOR EARTHQUAKE DAMAGE SCENARIO EVALUATION Response spectra SDF SYSTEMS The ground acceleration can be registered using accelerographs: A SDF system is subjected
More informationSoil-Structure Interaction in Nonlinear Pushover Analysis of Frame RC Structures: Nonhomogeneous Soil Condition
ABSTRACT: Soil-Structure Interaction in Nonlinear Pushover Analysis of Frame RC Structures: Nonhomogeneous Soil Condition G. Dok ve O. Kırtel Res. Assist., Department of Civil Engineering, Sakarya University,
More informationOutline of parts 1 and 2
to Harmonic Loading http://intranet.dica.polimi.it/people/boffi-giacomo Dipartimento di Ingegneria Civile Ambientale e Territoriale Politecnico di Milano March, 6 Outline of parts and of an Oscillator
More informationNonlinear static analysis PUSHOVER
Nonlinear static analysis PUSHOVER Adrian DOGARIU European Erasmus Mundus Master Course Sustainable Constructions under Natural Hazards and Catastrophic Events 520121-1-2011-1-CZ-ERA MUNDUS-EMMC Structural
More informationSeismic Design of Buildings to Eurocode 8
This article was downloaded by: 1.3.98.93 On: Sep 18 Access details: subscription number Publisher:Routledge Informa Ltd Registered in England and Wales Registered Number: 17954 Registered office: 5 Howick
More information3. MDOF Systems: Modal Spectral Analysis
3. MDOF Systems: Modal Spectral Analysis Lesson Objectives: 1) Construct response spectra for an arbitrarily varying excitation. 2) Compute the equivalent lateral force, base shear, and overturning moment
More informationDynamic Loads CE 543. Examples. Harmonic Loads
CE 543 Structural Dynamics Introduction Dynamic Loads Dynamic loads are time-varying loads. (But time-varying loads may not require dynamic analysis.) Dynamics loads can be grouped in one of the following
More informationAseismic design of structure equipment systems using variable frequency pendulum isolator
Aseismic design of structure equipment systems using variable frequency pendulum isolator Pranesh Murnal a, Ravi Sinha b, a Department of Applied Mechanics, Government College of Engineering, Karad 415124,
More informationDr.Vinod Hosur, Professor, Civil Engg.Dept., Gogte Institute of Technology, Belgaum
STRUCTURAL DYNAMICS Dr.Vinod Hosur, Professor, Civil Engg.Dept., Gogte Institute of Technology, Belgaum Overview of Structural Dynamics Structure Members, joints, strength, stiffness, ductility Structure
More informationLecture 9: Harmonic Loads (Con t)
Lecture 9: Harmonic Loads (Con t) Reading materials: Sections 3.4, 3.5, 3.6 and 3.7 1. Resonance The dynamic load magnification factor (DLF) The peak dynamic magnification occurs near r=1 for small damping
More informationENERGY AND DISPLACEMENT DEMANDS IMPOSED BY NEAR-SOURCE GROUND MOTIONS
ENERGY AND DISPLACEMENT DEMANDS IMPOSED BY NEAR-SOURCE GROUND MOTIONS Luis DECANINI 1, Fabrizio MOLLAIOLI And Rodolfo SARAGONI 3 SUMMARY This paper examines the effects of near-fault ground motions on
More informationCHAPTER 5. T a = 0.03 (180) 0.75 = 1.47 sec 5.12 Steel moment frame. h n = = 260 ft. T a = (260) 0.80 = 2.39 sec. Question No.
CHAPTER 5 Question Brief Explanation No. 5.1 From Fig. IBC 1613.5(3) and (4) enlarged region 1 (ASCE 7 Fig. -3 and -4) S S = 1.5g, and S 1 = 0.6g. The g term is already factored in the equations, thus
More informationExperimental Studies of Free-Standing Spent Fuel Storage Cask subjected to Strong Earthquakes
Transactions of the 17 th International Conference on Structural Mechanics in Reactor Technology (SMiRT 17) Prague, Czech Republic, August 17, 3 Paper # K8- Experimental Studies of Free-Standing Spent
More informationCombined Effect of Soil Structure Interaction and Infill Wall Stiffness on Building_- A Review
Combined Effect of Soil Structure Interaction and Infill Wall Stiffness on Building_- A Review Prof. Wakchaure M. R a* a Dean & Asso. Professor, Dept.of Civil Engineering, Amrutvahini College of Engineering,
More informationInfluence of Vertical Ground Shaking on Design of Bridges Isolated with Friction Pendulum Bearings. PI: Keri Ryan GSR: Rushil Mojidra
Influence of Vertical Ground Shaking on Design of Bridges Isolated with Friction Pendulum Bearings PI: Keri Ryan GSR: Rushil Mojidra 1 Objective/Scope of PEER Pendulum Bearing Study Objective 1: Comprehensively
More informationDESIGN EARTHQUAKE GROUND MOTIONS FOR NUCLEAR POWER PLANTS
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 934 DESIGN EARTHQUAKE GROUND MOTIONS FOR NUCLEAR POWER PLANTS Tarek S. Aziz 1 SUMMARY In order to apply
More informationSITE ANALYSIS USING RANDOM VIBRATION THEORY
Transactions, SMiRT-23, Paper ID 050 SITE ANALYSIS USING RANDOM VIBRATION THEORY 1 President APA Consulting, USA Alejandro P. Asfura 1 ABSTRACT This paper compares two methods for the seismic analysis
More informationSEISMIC PERFORMANCE ESTIMATION OF ASYMMETRIC BUILDINGS BASED ON THE CAPACITY SPECTRUM METHOD
SEISMIC PERFORMACE ESTIMATIO OF ASYMMETRIC BUILDIGS BASED O THE CAPACITY SPECTRUM METHOD Tatsuya AZUHATA, Taiki SAITO, Masaharu TAKAYAMA And Katsumi AGAHARA 4 SUMMARY This paper presents the procedure
More informationQUALITATIVE COMPARISON OF STATIC PUSHOVER VERSUS INCREMENTAL DYNAMIC ANALYSIS CAPACITY CURVES
QUALITATIVE COMPARISON OF STATIC PUSHOVER VERSUS INCREMENTAL DYNAMIC ANALYSIS CAPACITY CURVES Michalis Fragiadakis Department of Civil and Environmental Engineering, University of Cyprus, Cyprus Department
More informationComparative Study of Impact Simulation Models for Linear Elastic Structures in Seismic Pounding
Comparative Study of Impact Simulation Models for Linear Elastic Structures in Seismic Pounding N. U. Mate 1, S. V. Bakre and O. R. Jaiswal 3 1 Research Scholar, Associate Professor, 3 Professor Applied
More informationPROPOSED CHANGE TO THE 2012 BUILDING CODE O. REG. 332/12 AS AMENDED
Ministry of Municipal Affairs PROPOSED CHANGE TO THE 2012 BUILDING CODE O. REG. 332/12 AS AMENDED CHANGE NUMBER: SOURCE: B-04-01-15 Ontario-NBC CODE REFERENCE: Division B / 4.1.8.2. Division B / 4.1.8.4.
More information7 SEISMIC LOADS. 7.1 Estimation of Seismic Loads. 7.2 Calculation of Seismic Loads
1 7 SEISMIC LOADS 7.1 Estimation of Seismic Loads 7.1.1 Seismic load and design earthquake motion (1) For ordinary buildings, seismic load is evaluated using the acceleration response spectrum (see Sec.7.2)
More information2C09 Design for seismic and climate changes
2C09 Design for seismic and climate changes Lecture 10: Characterisation of seismic motion Aurel Stratan, Politehnica University of Timisoara 07/04/2017 European Erasmus Mundus Master Course Sustainable
More informationModel Uncertainty and Analyst Qualification in Soil-Structure Interaction Analysis
Laboratório de Dinâmica Estrutural e Confiabilidade Universidade Federal do Rio Grande do Sul Porto Alegre, Brazil Model Uncertainty and Analyst Qualification in Soil-Structure Interaction Analysis Jorge
More informationAMPLIFICATION OF GROUND STRAIN IN IRREGULAR SURFACE LAYERS DURING STRONG GROUND MOTION
AMPLIFICATION OF ROUND STRAIN IN IRREULAR SURFACE LAYERS DURIN STRON ROUND MOTION Mio KOBAYASHI 1, Hirokazu ANDO And Takahito WATANABE SUMMARY The characteristics of ground response in irregular surface
More informationAlternate Methods for Construction of Design Response Spectrum
Proc. Natl. Sci. Counc. ROC(A) Vol. 22, No. 6, 1998. pp. 775-782 Alternate Methods for Construction of Design Response Spectrum R. YAUNCHAN TAN Department of Civil Engineering National Taiwan University
More informationSeismic Design of Tall and Slender Structures Including Rotational Components of the Ground Motion: EN Approach
Seismic Design of Tall and Slender Structures Including Rotational Components of the Ground Motion: EN 1998-6 6 Approach 1 Chimneys Masts Towers EN 1998-6: 005 TOWERS, CHIMNEYS and MASTS NUMERICAL MODELS
More informationENERGY DIAGRAM w/ HYSTERETIC
ENERGY DIAGRAM ENERGY DIAGRAM w/ HYSTERETIC IMPLIED NONLINEAR BEHAVIOR STEEL STRESS STRAIN RELATIONSHIPS INELASTIC WORK DONE HYSTERETIC BEHAVIOR MOMENT ROTATION RELATIONSHIP IDEALIZED MOMENT ROTATION DUCTILITY
More informationGROUND MOTION DOMINANT FREQUENCY EFFECT ON THE DESIGN OF MULTIPLE TUNED MASS DAMPERS
Journal of Earthquake Engineering, Vol. 8, No. 1 (2004) 89 105 c Imperial College Press GROUND MOTION DOMINANT FREQUENCY EFFECT ON THE DESIGN OF MULTIPLE TUNED MASS DAMPERS CHUNXIANG LI School of Civil
More informationBEHAVIOR OF BUILDING FRAMES ON SOILS OF VARYING PLASTICITY INDEX
International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 1, January 2017, pp. 623 627 Article ID: IJCIET_08_01_072 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=8&itype=1
More informationA Guide to linear dynamic analysis with Damping
A Guide to linear dynamic analysis with Damping This guide starts from the applications of linear dynamic response and its role in FEA simulation. Fundamental concepts and principles will be introduced
More informationEffects of multi-directional excitations on the response of a secondary structure with two attachments
Proceedings of the Tenth Pacific Conference on Earthquake Engineering Building an Earthquake-Resilient Pacific 6-8 November 21, Sydney, Australia Effects of multi-directional excitations on the response
More information3-D FINITE ELEMENT NONLINEAR DYNAMIC ANALYSIS FOR SOIL-PILE-STRUCTURE INTERACTION
13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-, 4 Paper No. 157 3-D FINITE ELEMENT NONLINEAR DYNAMIC ANALYSIS FOR SOIL-PILE-STRUCTURE INTERACTION B.K. MAHESHWARI 1,
More informationTRANSPORTATION RESEARCH BOARD. TRB Webinar Program Direct Displacement Based Seismic Design of Bridges. Thursday, June 22, :00-3:30 PM ET
TRANSPORTATION RESEARCH BOARD TRB Webinar Program Direct Displacement Based Seismic Design of Bridges Thursday, June 22, 2017 2:00-3:30 PM ET The Transportation Research Board has met the standards and
More informationRESPONSE ANALYSIS STUDY OF A BASE-ISOLATED BUILDING BASED
4th International Conference on Earthquake Engineering Taipei, Taiwan October 12-13, 2006 Paper No. 224 RESPONSE ANALYSIS STUDY OF A BASE-ISOLATED BUILDING BASED ON SEISMIC CODES WORLDWIDE Demin Feng 1,
More informationMechanical Vibrations Misc Topics Base Excitation & Seismic
Mechanical Vibrations Misc Topics Base Excitation & Seismic Peter Avitabile Mechanical Engineering Department University of Massachusetts Lowell 1 Dr. Peter Avitabile Seismic events are often moele with
More informationNON-ITERATIVE EQUIVALENT LINEAR METHOD FOR DISPLACEMENT-BASED DESIGN
13 th World Conference on Earthquae Engineering Vancouver, B.C., Canada August 1-6, 24 Per No. 3422 NON-ITERATIVE EQUIVALENT LINEAR METHOD FOR DISPLACEMENT-BASED DESIGN Eduardo MIRANDA 1, Yu-Yuan LIN 2
More informationSEISMIC RESPONSE EVALUATION OF AN RC BEARING WALL BY DISPLACEMENT-BASED APPROACH
3 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August -, 4 Paper No. 49 SEISMIC RESPONSE EVALUATION OF AN RC BEARING WALL BY DISPLACEMENT-BASED APPROACH Chang-Hun HYUN, Sanghyun
More informationFree Vibration of Single-Degree-of-Freedom (SDOF) Systems
Free Vibration of Single-Degree-of-Freedom (SDOF) Systems Procedure in solving structural dynamics problems 1. Abstraction/modeling Idealize the actual structure to a simplified version, depending on the
More informationEffect of Liquefaction on Displacement Spectra
Effect of Liquefaction on Displacement Spectra Rui SUN 1, Longwei Chen 2, Xiaoming YUAN 3, Yi QIU 4 1 Professor, Dept. of Geotechnical Engineering, Institute of Engineering Mechanics, Harbin. China 2 PHD,
More informationZero-Pad Effects on Conditional Simulation and Application of Spatially-Varying Earthquake Motions
6th European Workshop on Structural Health Monitoring - Tu.3.D.3 More info about this article: http://www.ndt.net/?id=14103 Zero-Pad Effects on Conditional Simulation and Application of Spatially-Varying
More informationAddress for Correspondence
Research Article EXPERIMENT STUDY OF DYNAMIC RESPONSE OF SOFT STOREY BUILDING MODEL C. S. Sanghvi 1, H S Patil 2 and B J Shah 3 Address for Correspondence 1 Associate Professor, Applied Mechanics Department,
More informationDynamics of structures
Dynamics of structures 2.Vibrations: single degree of freedom system Arnaud Deraemaeker (aderaema@ulb.ac.be) 1 Outline of the chapter *One degree of freedom systems in real life Hypothesis Examples *Response
More information