A SIMPLIFIED EVALUATION METHOD FOR MAXIMUM WALL DEFLECTION INDUCED BY DEEP EXCAVATION IN CLAY
HSIEH Piogo1,CHIEN Shaochi2,OU Changyu3
(1. Department of Assets and Property Management,Hwa Hsia Institute of Technology,Chungho,Taiwan 23568,China;
2. Department of Information Touris,Aletheia University,Tamsui,Taiwan 25103,China;3. Department of Construction Engineering,National Taiwan University of Science and Technology,Taipei,Taiwan 10672,China)
Abstract:By using numerical analysis,a series of parametric studies for the maximum wall deflection induced by excavation in clay are performed. Based on the results of parametric studies,a simplified evaluation method for maximum wall deflection is proposed using multiple regressions. The proposed method is verified through four case histories. Based on the comparison between predicted maximum wall deflections and those from field observation,the predicted maximum wall deflections are generally within 0.85–1.15 times of observed deflections. Therefore,the proposed method can be used for preliminary prediction and design,and also done for checking the final results of design.
谢百钩1,简绍琦2,欧章煜3. 黏土层中深基坑挡土墙最大变形量简易评估法[J]. 岩石力学与工程学报, 2012, 31(11): 2285-2290.
HSIEH Piogo1,CHIEN Shaochi2,OU Changyu3. A SIMPLIFIED EVALUATION METHOD FOR MAXIMUM WALL DEFLECTION INDUCED BY DEEP EXCAVATION IN CLAY. , 2012, 31(11): 2285-2290.
[1] CLOUGH G W,O'ROURKE T D. Construction-induced movements of insitu walls[C]// Proceedings of the Design and Performance of Earth Retaining Structures,ASCE Special Conference. [S. l.]:[s. n.],1990:439–470.
[2] KUNG T C,JUANG C H,HSIAO C L,et al. Simplified model for wall deflection and ground surface settlement caused by braced excavation in clays[J]. Journal of Geotechnical and Geoenvironmental Engineering,2007,133(6):731–747.
[3] 谢百钩. 黏土层深开挖引致地盘最大位移预测[J]. 中国土木水利工程学刊,2001,13(3):489–498.(HSIEH P G. Prediction of maximum ground movements induced by deep excavation in clay[J]. Journal of the Chinese Institute of Civil and Hydraulic Engineering,2001,13(3):489–498.(in Chinese))
[4] CLOUGH G W,SMITH E M,SWEENEY B P. Movement control of excavation support systems by iterative design[C]// Current Principles and Practices,Foundation Engineering Congress,ASCE. Reston,Virginia:ASCE,1989:869–884.
[5] TERZAGHI K. Theoretical soil mechanics[M]. New York:John Wiley and Sons,Inc.,1943:193.
[6] OU C Y,LIAO J T,LIN H D. Performance of diaphragm wall constructed using top-down method[J]. Journal of Geotechnical and Geoenvironmental Engineering,1998,124(9):798–808.
[7] HSIEH P G,OU C Y. Analysis of deep excavations in clay under the undrained condition with small strain characteristics[J]. Journal of the Chinese Institute of Engineers,2012,35(5):1–16.
[8] HSIEH P G,OU C Y. Shape of ground surface settlement profiles caused by excavation[J]. Canadian Geotechnical Journal,1988,35(6):1 004–1 017.