TANUSREE CHAKRABORTY

Transcription

1 TANUSREE CHAKRABORTY Department of Civil Engineering, IIT Delhi, Hauz Khas, New Delhi , India. HONE: , FAX: R ESEARCH INTERESTS Numerical and Analytical Modeling of Boundary Value roblems, Foundation Engineering, Soil lasticity and Constitutive Modeling, Soil-Structure Interaction, Blast Loading in Soil, Underground Constructions in Soil and Rock, Energy Geotechnical Engineering. E DUCATION urdue University, West Lafayette, Indiana, U.S.A., ( ) Doctor of hilosophy (Geotechnical Engineering) Doctoral Dissertation: Development of a clay constitutive model and its application to pile boundary value problems Advisor: rof. Rodrigo Salgado Indian Institute of Technology (IIT), Delhi, India, ( ) Master of Technology in Civil Engineering (Rock Mechanics) Thesis: Finite element analysis of underground nuclear repositories Advisor: rof. K. G. Sharma Bengal Engineering College, Shibpur, India, ( ) Bachelor of Civil Engineering ROFESSIONAL AOINTMENTS IIT Delh i, India Assistant rofessor (December resent) DS Simulia, rovidence, Rhode Island, U.S.A. Technical Support Engineer I (December 2008 December 2010) urdue University, West Lafayette, Indiana, U.S.A. Bilsland Doctoral Dissertation Fellow (May 2008 December 2008) Graduate Research Assistant (August 2005 May 2008) Graduate Teaching Assistant (August 2005 December 2005) IIT Delh i, India Senior Research Fellow (January June 2005) Graduate Teaching Assistant (January December 2004) Chakraborty, CV, 1 of 7

2 M. N. Dastur and Company Limited, Calcutta, India Summer Intern (June 2001) UBLICATIONS In Refereed Journal 1. Martindale, H., Chakraborty, T. and Basu, D. (2011). Strain-rate dependent constitutive model for clay. Submitted in Soils and Foundations. 2. T. Chakraborty, R. Salgado and D. Loukidis (2010). A two-surface plasticity model for clay, Submitted in Computers and Geotechnics. 3. T. Chakraborty, R. Salgado,. Basu, and M. rezzi (2010). Shaft capacity of drilled shafts in clay, Submitted in Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 4. T. Chakraborty and R. Salgado (2009). Dilatancy and shear strength of sand at low confining pressures. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol 136(3), pp D. Loukidis, T. Chakraborty and R. Salgado (2008). Bearing capacity of strip footings on purely frictional soil under eccentric and inclined loads. Canadian Geotechnical Journal, Vol 45(6), pp Basu, D., rezzi, M., Salgado, R. and Chakraborty, T. (2008). Settlement analysis of piles with rectangular cross sections in multi-layered soil. Computers and Geotechnics, Vol 35 (4), pp In Refereed Conference roceedings 7. Higgins, W., Martindale, H., Chakraborty, T. and Basu, D. (2010). Two-surface viscoplastic sand model for disaster mitigation. In roceedings of 3rd International Conference on Geotechnical Engineering for Disaster Mitigation and Rehabilitation (GEDMAR), Semarang, Central Java, Indonesia, CD-ROM, May Higgins, W., Basu, D. and Chakraborty, T. (2011). Soil constitutive model for sustainable geotechnical design. In roceedings of Third Indian Young Geotechnical Engineers Conference, New Delhi, India, March Higgins, W., Martindale, H., Chakraborty, T. and Basu, D. (2010). Assessment of the p-y method for laterally loaded pile in sand. In roceedings of Indian Geotechnical Conference, Mumbai, India, December Chakraborty, CV, 2 of 7

3 10. Higgins, W., Martindale, H., Chakraborty, T. and Basu, D. (2010). Soil constitutive model for sustainable geotechnical design. In roceedings of International Conference on Sustainable Built Environment The State of the Art, Kandy, Sri Lanka, December Higgins, W., Martindale, H., Chakraborty, T. and Basu, D. (2010). Two-surface viscoplastic sand model for high rate loading. In roceedings of 2nd International Conference on Geotechnical Engineering, Hammamet, Tunisia, October T. Chakraborty and R. Salgado (2009). Dilatancy and shear strength of sand at low confining pressures. 17 th ICSMGE-Egypt. 13. Chakraborty T. and Sharma K. G. (2006). "Analysis of underground nuclear repositories for temperature dependent rock properties, ARMS-2006, Singapore. 14. Chakraborty T. and Sharma K. G. (2005). arametric sensitivity studies of underground nuclear repositories, In roceedings of Indian Geotechnical Conference, Ahmadabad, India, December T. Chakraborty and K.G. Sharma (2005). Finite Element analysis of underground nuclear repositories, In roceedings of National Conference on Geotechnics in Environmental rotection, Allahabad, India. Reports 16.. Basu, R. Salgado, M. rezzi and T. Chakraborty. A method for accounting for pile setup and relaxation in pile design and quality assurance, FHWA/IN/JTR- 2009/24, Joint Transportation Research rogram, urdue University. F UNDED RESEARCH ROJECTS 1. Investigation of high strain rate soil behaviour for engineering applications T. Chakraborty, Amount: INR 10,00, (IIT Delhi Seed Money Grant), April 2011 to April Soil characterization under high loading rate T. Chakraborty, Amount: INR 1,00, (IIT Delhi Research Grant for New Faculty Scheme), February 2011 to August Chakraborty, CV, 3 of 7

4 RESEARCH EXERIENCE ost-hd Research, individual and in collaboration with a Faculty in University of Connecticut (May 2008 resent) High Strain Rate Soil Constitutive Model: The research involves development of sand and clay constitutive models incorporating viscoplasticity and strain-rate-dependent behavior. The model will be implemented in finite element code Abaqus to solve boundary value problems related to geotechnical applications involving high strainrate. Energy Geotechnical Engineering: The research involves development of a thermomechanical soil constitutive model and its application in numerical modeling of geothermal energy extraction through shallow and deep foundations. Analysis of Three Dimensional ile enetration: An extremely challenging problem in the field of Geotechnical Engineering. The research involves modeling of pile jacking and driving in both sand and clay using advanced soil constitutive model and proposing design equations. Doctoral Student, urdue University (August 2005 August, 2009) Constitutive Modeling: The research focuses on the modifications and addition of new components to an existing bounding surface plasticity based constitutive model for characterizing clay behavior, with particular emphasis on capturing the residual state strength and strain-rate-dependent clay behavior. Critical state soil mechanics framework is used. The model is implemented in a finite element code to solve boundary value problems related to piling engineering. ile Shaft Capacity Determination : The research focuses on capturing the immediate and long-term shaft capacity of jacked piles and drilled shafts in clay using bounding surface plasticity based constitutive model. The process involves investigation of pile strength gain due to clay-consolidation. Finite element code SNAC is used to solve the boundary value problem. Axially and Laterally Loaded iles: The research involves three dimensional finite element modeling of axially and laterally loaded piles and pile groups in multilayered soil incorporating soil nonlinearity. Finite element code Abaqus is used. User material subroutines (UMAT) are written for different soil constitutive models. Bearing Capacity of Footings: In this research, determination of bearing capacity of strip footings on sand under eccentric and inclined loads was performed. We have proposed equations for the inclination factor, the effective width and the footing failure locus in the vertical load horizontal load moment space. A Generalized, Three-dimensional Foundation Model: This research aims at developing a generalized three-dimensional, continuum-based foundation model. Solutions will be obtained by using a combination of analytical and simple numerical Chakraborty, CV, 4 of 7

5 techniques so that the use of three dimensional finite element analysis can be minimized. Senior Research Fellow, IIT Delhi (January 2005 June 2005) Determination of Rock arameter: This research involved rigorous laboratory testing of rock samples to determine constitutive modeling parameters. Masters Student, IIT Delhi (January 2003 December 2004) Nuclear Repository: This research focused on coupled thermo-mechanical and thermohydro-mechanical analysis of underground nuclear repository structures in rock using finite element program ABAQUS. Slope Stability Analysis: This research involved rock drilling, coring and sampling followed by rigorous testing to perform stability analysis of rock slopes analytically and also using GEO-SLOE. G RADUATE STUDENTS hd Student: o Ms. Rajni Saggu Investigation of load transfer mechanism and soil-structure interaction for energy piles. M.Tech. Student o Sumant Mohanto Mechanical analysis of underground energy storage. o Kamlakar Singh Thermomechanical analysis of underground energy storage. o Sangeet Sachan Investigation of load transfer mechanism for energy piles. T Assistant rofessor, IIT Delhi CE 752 Rock Engineering Lab II CEL 222 Engineering Geology Lab EACHING EXERIENCE ost-hd, University of Connecticut Invited lecture on sessions. Soil lasticity to graduate students: Conducted three six hours Teaching Assistant, urdue University CE 483 Geotechnical Engineering II Chakraborty, CV, 5 of 7

6 C ONSULTANCY ROJECTS Testing of strap geogrids of WD, Delhi from March 2011 to May 2011 (Co- CI; CI: rofessor G. V. Ramana) Structural design and drawing vetting of auto-mechanically operated gated barrage across river Tawi at Belicharana, Jammu of GVR Infra projects Limited, Noida. From March 2011 to June 2011 (CI; Co-CI: Dr. V. Matsagar). I RACTICAL DESIGN/ NDUSTRY EXERIENCE Technical Support Engineer, DS Simulia, Abaqus, rovidence, RI resent) ( December, 2008 Learning varied applications of Abaqus in Geotechnical Engineering and other engineering disciplines including Mechanical, Aerospace, etroleum and Biomechanical Engineering Solving customer problems, Some examples: rojectile enetration in Ground Analysis of Stent in Human Heart Analysis of Rolling Tire on Soft Ground Analysis of Solder-Board rojects: Interference fit analysis of threaded pipe joint Testing of coupled thermo-poro-mechanical elements in Abaqus Testing of soil constitutive models in Abaqus Three-dimensional pressure penetration analysis Summer Intern, M. N. Dastur and Company Limited (June 2001) Study of company specifications for design and construction Design and drawing of reinforced concrete structures, concrete footings, columns and slabs and raft foundations. ROFESSIONAL AFFILIATIONS Life Member, Indian Geotechnical Society. Associate Member, American Society of Civil Engineers Chakraborty, CV, 6 of 7

7 Member, Institution of Civil Engineers, The British Geotechnical Association Member of International Society of Soil Mechanics and Geotechnical Engineering Member of International Society of Rock Mechanics Member, urdue Geotechnical Society ROFESSIONAL SERVICES Reviewer, Advances in Civil Engineering Faculty advisor to B.Tech entry batch Member of the C. W. Lovell Distinguished Lecture Committee, School of Civil Engineering, urdue University, May 2006 May 2008 Administrative Officer and Member, Organization, May 2006 May 2008 Reviewer, The Engineering of Foundations, Reviewer, GeoCongress, 2008 Geo-Institute (of ASCE) Graduate Student Chakraborty, CV, 7 of 7