Pile-anchor retaining structure is widely used in foundation pit engineering and side slope engineering
in many countries. In contrast to strut, pile-anchor retaining structure has its typical features and advantages. It
does not occupy the internal space of the foundation pit, and the project cost is much lower. Accurate prediction
of the lateral displacement of the retaining structure is very important in the design stage. A simplified analysis
method and several calculation assumptions of the lateral deformation of pile-anchor retaining structures are set
up according to the engineering features. The expression function of lateral displacement versus depth is solved
by means of a fitted function and the quasi-elastic summation method. The parameters are obtained through the
stiffness equation of the anchors and the principle of minimum potential energy. The analytical evaluation of the
lateral deformation curve is then completed, whose applicability is proved through practical engineering.
XU Hai-yong1 (许海勇), LIU Wei1,2 (刘玮), CHEN Long-zhu1* (陈龙珠)
. A Simplified Analysis Method for the Lateral Deformation of Braced Excavations[J]. Journal of Shanghai Jiaotong University(Science), 2013
, 18(2)
: 224
-228
.
DOI: 10.1007/s12204-013-1386-1
[1] JGJ120-99, Code for bracing technology of building foundation pit [S] (in Chinese).
[2] DG/TJ08-61-2010, Technical code for excavation engineering [S] (in Chinese).
[3] Clough G W, O’Rourke T D. Construction induced movements of in situ walls [C]//Proceedings of Design and Performance of Earth Retaining Structure. Ithaca, NY: Geotechnical Special Publication, 1990: 439-470.
[4] Wong K S, Broms B B. Lateral wall deflections of braced excavations in clay [J]. Journal of Geotechnical Engineering, 1989, 115(6): 853-870.
[5] Hashash Y M A, Whittle A J. Ground movement prediction for deep excavations in soft clay [J]. Journal of Geotechnical Engineering, 1996, 122(6): 474-486.
[6] Long M. Database for retaining wall and ground movements due to deep excavations [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2001, 127(3): 203-224.
[7] Kung G T C, Juang C H, Hsiao E 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.
[8] Hsiao E C L, Kung G T C, Juang C H, et al. Estimation of wall deflection in deep excavation-neural network approach [J]. Underground Construction and Ground Movement, 2006, 155: 348-354.
[9] Xu Zhong-hua, Wang Jian-hua, Wang Wei-dong. Deformation behavior of deep excavations retained by bored pile wall in soft soil [J]. Rock and Soil Mechanics, 2009, 30(5): 1362-1366 (in Chinese).
[10] Bilgin O. Numerical studies of anchored sheet pile wall behavior constructed in cut and fill conditions [J]. Computers and Geotechnics, 2010, 37: 399-407.
[11] Wang Wei-dong, Wang Hao-ran, Huang Mao-song, et al. Simplified calculation method of lateral deformation of gravity retaining wall [J]. Journal of Tongji University: Natural Science, 2011, 39(6): 814-818 (in Chinese).
[12] Liu W, Chen L Z, Xi X Z, et al. Analytic method of load-displacement curve for tension anchors based on hyperbolic load-transfer function [C]// Proceedings of GeoShanghai International Conference. Shanghai: ASCE, 2010: 43-48.
