›› 2015, Vol. 36 ›› Issue (S2): 583-587.doi: 10.16285/j.rsm.2015.S2.082

• Geotechnical Engineering • Previous Articles     Next Articles

Simplified method for calculating maximum deformation of diaphragm walls caused by braced excavation in soft clays

JIN Xiao-fei1, LIANG Shu-ting1, ZHU Xiao-jun2, ZHANG Yu-liang1   

  1. 1. School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China; 2. Architectural Design and Research Institute Co., Ltd., Southeast University, Nanjing, Jiangsu 210096, China
  • Received:2014-04-03 Online:2015-08-31 Published:2018-06-14

PDF (Chinese)

1374

Abstract: By using finite element method, a series of parametric studies is performed for the maximum wall deflection induced by excavation in soft clay. Five main parameters effecting deformation i. e. excavation depth(H), excavation width(B), system stiffness(S), axial stiffness of the supporting structure(Sa), ratio of the average shear strength over the vertical effective stress , are analyzed. Based on the results of parametric studies，a simplified calculation method for maximum wall deflection is proposed using multiple regression. The proposed method is verified through several case stdudies. The proposed method can be used to preliminarily predict and also check the final results of design.

Key words: finite element method, excavation, maximum wall deformation, simplified calculation method

CLC Number: 

  • TU 476
[1] WEI Gang, ZHANG Xin-hai, LIN Xin-bei, HUA Xin-xin, . Variations of transverse forces on nearby shield tunnel caused by foundation pits excavation [J]. Rock and Soil Mechanics, 2020, 41(2): 635-644.
[2] SUN Rui, YANG Feng, YANG Jun-sheng, ZHAO Yi-ding, ZHENG Xiang-cou, LUO Jing-jing, YAO Jie, . Investigation of upper bound adaptive finite element method based on second-order cone programming and higher-order element [J]. Rock and Soil Mechanics, 2020, 41(2): 687-694.
[3] KE Jin-fu, WANG Shui-lin, ZHENG Hong, YANG Yong-tao, . Application and promotion of a modified symmetric and anti-symmetric decomposition-based three-dimensional numerical manifold method [J]. Rock and Soil Mechanics, 2020, 41(2): 695-706.
[4] WANG Guo-hui, CHEN Wen-hua, NIE Qing-ke, CHEN Jun-hong, FAN Hui-hong, ZHANG Chuan, . Impacts of pit excavation on foundation piles in deep silty soil by centrifugal model tests [J]. Rock and Soil Mechanics, 2020, 41(2): 399-407.
[5] DING Zhi, ZHANG Xiao, JIN Jie-ke, WANG Li-zhong, . Measurement analysis on whole excavation of foundation pit and deformation of adjacent metro tunnel [J]. Rock and Soil Mechanics, 2019, 40(S1): 415-423.
[6] WU Jin-liang, HE Ji, . Composite element model for dynamic excavation simulation of rock slope [J]. Rock and Soil Mechanics, 2019, 40(S1): 535-540.
[7] HOU Gong-yu, JING Hao-yong, LIANG Jin-ping, ZHANG Guang-dong, TAN Jin-xin, ZHANG Yong-kang, YANG Xi, . Experimental study of deformation and acoustic emission characteristics of rectangular roadway under different unloading rates [J]. Rock and Soil Mechanics, 2019, 40(9): 3309-3318.
[8] WANG Qin-ke, MA Jian-lin, CHEN Wen-long, YANG Yan-xin, HU Zhong-bo, . Centrifugal model tests and calculation method of uplift bearing capacity of rock-socketed pedestal pile overburden soil [J]. Rock and Soil Mechanics, 2019, 40(9): 3405-3415.
[9] LI Rui-shan, YUAN Xiao-ming. Simplified calculation method for the fundamental period of layered soil sites [J]. Rock and Soil Mechanics, 2019, 40(8): 3227-3235.
[10] ZHANG Hai-ting, YANG Lin-qing, GUO Fang, . Solution and analysis of dynamic response for rigid buried pipe in multi-layered soil based on SBFEM [J]. Rock and Soil Mechanics, 2019, 40(7): 2713-2722.
[11] WANG Xiang-nan, LI Quan-ming, YU Yu-zhen, YU Jia-lin, LÜ He, . Simulation of the failure process of landslides based on extended finite element method [J]. Rock and Soil Mechanics, 2019, 40(6): 2435-2442.
[12] GU Dan-ping, LING Tong-hua, . Analysis of bearing ratio of cement soil and displacement at the top of wall for soil mixing wall construction method of cantilever type [J]. Rock and Soil Mechanics, 2019, 40(5): 1957-1965.
[13] LIU Nian-wu, CHEN Yi-tian, GONG Xiao-nan, YU Ji-tao, . Analysis of deformation characteristics of foundation pit of metro station and adjacent buildings induced by deep excavation in soft soil [J]. Rock and Soil Mechanics, 2019, 40(4): 1515-1525.
[14] ZHANG Kun-yong, ZANG Zhen-jun, LI Wei, WEN De-bao, CHARKLEY Frederick Nai, . Three-dimensional elastoplastic model of soil with consideration of unloading stress path and its experimental verification [J]. Rock and Soil Mechanics, 2019, 40(4): 1313-1323.
[15] QIU Min, YUAN Qing, LI Chang-jun, XIAO Chao-chao, . Comparative study of calculation methods for undrained shear strength of clay based on cavity expansion theory [J]. Rock and Soil Mechanics, 2019, 40(3): 1059-1066.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] XIANG Tian-bing, FENG Xia-ting, CHEN Bing-rui, JIANG Quan, ZHANG Chuan-qing. Rock failure mechanism and true triaxial experimental study of specimens with single structural plane under three-dimensional stress[J]. , 2009, 30(10): 2908 -2916 .
[2] ZHANG Yi-hu, ZHOU Huo-ming, WU Ai-qing. Post processing of discontinuity network modeling result[J]. , 2009, 30(9): 2855 -2861 .
[3] YANG Guang, SUN Xun, YU Yu-zhen, ZHANG Bing-yin. Experimental study of mechanical behavior of a coarse-grained material under various stress paths[J]. , 2010, 31(4): 1118 -1122 .
[4] ZHANG Chang-guang，ZHANG Qing-he，ZHAO Jun-hai. Unified solutions of shear strength and earth pressure for unsaturated soils[J]. , 2010, 31(6): 1871 -1876 .
[5] YANG Tian-hong, CHEN Shi-kuo, ZHU Wan-cheng, LIU Hong-lei. Coupled model of gas-solid in coal seams based on dynamic process of pressure relief and gas drainage[J]. , 2010, 31(7): 2247 -2252 .
[6] HU Xiu-hong，WU Fa-quan. Research on two-parameter negative exponential distribution of discontinuity spacings in rock mass[J]. , 2009, 30(8): 2353 -2358 .
[7] LI Wei-chao, XIONG Ju-hua, YANG Min. Improved method for calculating anti-overturning safety factor of cement-soil retaining wall in layered soil[J]. , 2011, 32(8): 2435 -2440 .
[8] ZHANG Gui-min , LI Yin-ping , SHI Xi-lin , YANG Chun-he , WANG Li-juan. Research on a model material preparation method for alternate layered rock mass and preliminary experiment[J]. , 2011, 32(S2): 284 -289 .
[9] LI Shu-cai , ZHAO Yan , XU Bang-shu , LI Li-ping , LIU Qin , WANG Yu-kui . Study of determining permeability coefficient in water inrush numerical calculation of subsea tunnel[J]. , 2012, 33(5): 1497 -1504 .
[10] Lü Ya-ru , DING Xuan-ming , SUN Jia , KONG Gang-qiang . Analysis of ultimate bearing capacity of X-section cast-in-place concrete pile composite foundation under rigid load[J]. , 2012, 33(9): 2691 -2696 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd