上海交通大学学报

上海交通大学学报 ›› 2006, Vol. 40 ›› Issue (12): 2134-2137.doi: 10.16183/j.cnki.jsjtu.2006.12.026

所属专题： 王建华教授学报发文专辑

• • 上一篇    

非均匀堆载作用下圆形基坑主动土压力分析

刘发前, 王建华()   

  1. 上海交通大学土木工程系，上海 　200030
  • 收稿日期:2005-12-28 出版日期:2006-12-01 发布日期:2021-04-25
  • 作者简介:刘发前（1981-)，男，安徽人，博士生，主要从事基坑工程的研究工作．|王建华（联系人），男，教授，博士生导师，电话（Tel.): 021-62932915; E-mail: wjh417@sjtu.edu.cn.

The Active Earth Pressure of Circular Pit Subjected to Non-Uniform Surcharge Loading

LIU Fa-qian, WANG Jian-hua()   

  1. Dept. of Civil Eng. , Shanghai Jiaotong Univ. , Shanghai 200030, China
  • Received:2005-12-28 Online:2006-12-01 Published:2021-04-25

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摘要：

基于轴对称情况下土体的极限平衡理论，将圆形基坑主动土压力的滑移线解推广到非均匀堆载情况．通过分析得出基坑半径和土体参数对基坑主动土压力的影响规律，并发现与朗肯土压力理论一致．比较了非均匀和均匀堆载作用下的滑移线场和相应的土压力分布，发现基坑周围不同位置的堆载大小只影响基坑侧壁某部分深度范围内的土压力分布．因此，可根据基坑周围堆载的分布形式，定性估计得到基坑侧壁的土压力分布．

关键词: 圆形基坑, 主动土压力, 非均匀堆载

Abstract:

Based on the limit equilibrium theory for axially symmetric condition, the active earth pressure of circular pit obtained with slip-line method was extended to non-uniform surcharge loading. By analyzing the influence of the radius of pit and soil parameters to the active earth pressure distribution, it was achieved that the influence is identical to Rankine theory. The comparison of slip-line field and active earth pressure distribution under non-uniform and uniform surcharge loading was made, it is show n that the surcharge loading at some region only affects the earth pressure at some specific area. So, it is easy to estimate earth pressure distribution qualitatively according to the distribution of surcharge loading.

Key words: circular pit, active earth pressure, non-uniform surcharge loading

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