Generalized solution to active earth pressure exerted onto retaining wall with narrow backfills

被引：0
|
作者：
Lai F.-W. [1 ,2 ]
Liu S.-Y. [1 ,2 ]
Yang D.-Y. [1 ,2 ]
Cheng Y.-H. [3 ]
Fan Q.-J. [3 ]
机构：
[1] Institute of Geotechnical Engineering, Southeast University, Nanjing
[2] Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety, Southeast University, Nanjing
[3] ZYF Construction Group Co., Ltd., Suzhou
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2022年 / 44卷 / 03期
关键词：
Active earth pressure; Finite element limit analysis; Horizontal shearing force; Narrow backfill; Soil arching effect;
D O I：
10.11779/CJGE202203010
中图分类号：
学科分类号：
摘要：
The finite element limit analysis (FELA) method is used to interpret the active failure mechanisms of retaining wall with narrow backfills under translation mode. It is found from the numerical results that multiple slip surfaces will be developed in the narrow backfills in rebounding form. Moreover, the numbers of slip surfaces in various cases are summarized. Afterwards, based on the active failure mechanisms, the backfills are divided into the upper non-sliding zone and the lower sliding zone. Considering the soil arching effects and the horizontal shearing between adjacent elements, the concept of curved soil-layer element is introduced to calculate the earth pressures in non-sliding zone. The sliding-wedge method and the finite difference theory are further used to estimate the active earth pressure taking the number of slip surface into account. Also, the solution to the active thrust and its application point are deduced. The proposed analytical solutions are validated through the comparisons against the previous studies. Finally, the parametric studies considering the effects of aspect ratio, soil friction angle and wall-soil friction angle are performed. The results show that the number of slip surface significantly affects the distribution of the active earth pressure, and using the proposed analytical solution is beneficial to an economic design of retaining wall with narrow backfills. © 2022, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：483 / 491
页数：8
相关论文
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