The San Jacinto Monument Case History
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1 Picture obtained from January05/sanjacinto.jpg Jean-Louis Briaud Texas A&M University The San Jacinto Monument Case History 1
2 2 CREDITS Phillip King Fugro Briaud J.-L., Koohi Y., Nicks J., Jung I., 2015, San Jacinto Monument: New Soil Data and Analysis Including Subsidence, Journal of Geotechnical and Geoenvironmental Engineering, Vol.141 Issue 6, June 2015, ASCE, Reston, Virginia, USA. Briaud J.-L., Nicks J., Rhee K., Stieben G., 2007, The San Jacinto Monument Case History, Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 11, November 2007, ASCE, Reston, Virginia, USA. Efforts have been made to give credit for illustrations and text obtained from other sources. If you find credit missing on this document, please contact us so we can address the issue. Jean-Louis Briaud Texas A&M University
3 3 History March 2, 1836: Texas declares its independence from Mexico March 6, 1836: The Battle of The Alamo Mexico (Santa Anna) defeats Texas April 21, 1836: The Battle of San Jacinto Texas (Sam Houston) defeats Mexico Jean-Louis Briaud Texas A&M University
4 Structural Dimensions 4
5 5 Construction Reinforcement in the Foundation ( Bullen, 1938) Jean-Louis Briaud Texas A&M University
6 Construction 6
7 Loading 7 Gross pressure = 224 kpa Max pressure (dead + wind) = 273 kpa Excavation = -83 kpa Net pressure = 141 kpa Net pressure after mat poured = 10 kpa Pressure from Terraces = 34 kpa and 85 kpa
8 Location of Soil Borings 8
9 9 0.0 m 15.0 m 18.0 m 63.0 m 77.0 m Very Stiff Clay Silty Sand Stiff to Very Stiff Clay Very Stiff Silty Clay Depth (m) Soil Type Very Stiff Clay, red and gray Very Stiff Clay, red and gray Very Stiff Clay, red and gray Silty Sand, Very Dense Silty Sand Very Dense Very Stiff Clay Very Stiff Clay Very Stiff Clay, ligh gray and red Clay with Ferrous nodules Clay, light gray and tan Silty Clay, brown and gray Very Stiff Clay, red and gray Very Stiff Clay, red and gray Very Stiff Clay, red and gray Silty Clay with gray sand Silty Clay with clay stones Stiff Silty Clay, gray Stiff Silty Clay, gray Jean-Louis Briaud Texas A&M University
10 Soil Index Properties (kn/m 3 ) γ t (kpa) ω(%) PI (%) Very Stiff Clay Silty Sand Stiff to Very Stiff Clay Very Stiff Silty Clay 60 70
11 11 5
12 Consolidation Characteristics 12
13 Stress History 13
14 Depth (m) Cone Penetrometer Results 14 Depth (m) Tip Resistance (kpa) Tip Resistance (kpa) Friction (kpa) Pore Pressure (kpa) Friction (kpa) Pore Pressure (kpa) Ratio (%) Ratio (%) Jean-Louis Briaud Texas A&M University
15 Pressuremeter P L =2.7 MPa, P y =1.6 Mpa, E 0 =54 MPa E r =145 MPa, n=0.022
16 Pressuremeter Jean-Louis Briaud Texas A&M University
17 Undrained Shear Strength
18 ULTIMATE BEARING 18 CAPACITY Test Method SU from Borings (Skempton, 1951) Bearing Capacity (kpa) F.S (Dead Load) F.S (Hurricane + Dead Load) CPT (Tand et al, 1986) CPT (AFNOR-Frank 2013) PMT (AFNOR-Frank 2013)
19 19 Jean-Louis Briaud Texas A&M University
20 20 SETTLEMENT Consolidation Tests CPT(Schmertmann) PMT(First modulus) Measured Short term Long term Short term Long term in 2006 (long term) (long term) m m 0.19 m m m m m
21 Actual Settlement 21
22 22 Jean-Louis Briaud Texas A&M University
23 Subsidence 23 Picture obtained from ~leeman/anr.html Jean-Louis Briaud Texas A&M University
CPT: Geopractica Contracting (Pty) Ltd Total depth: m, Date:
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