Rule of active limiting displacement and calculation method of active earth pressure

LI Chao

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Rule of active limiting displacement and calculation method of active earth pressure

更新时间：2026-06-25

- Rule of active limiting displacement and calculation method of active earth pressure
- Vol. 29, Issue 11, (2008)
- 作者机构：
  
  佛山市顺德区碧桂园物业发展有限公司,广东,佛山,528312
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411.3
- Online First：07 August 2013，
  
  Published：2008
- 稿件说明：
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LI Chao. Rule of active limiting displacement and calculation method of active earth pressure[J]. 2008, 29(11).
DOI：

LI Chao. Rule of active limiting displacement and calculation method of active earth pressure[J]. 2008, 29(11). DOI：

摘要

针对基坑支护结构的工作特点和土体的具体情况，对朗肯土压理论的合理性和局限性进行了有益探讨，指出朗肯土压理论在支护结构土压力计算上的不足。在支护结构墙后土体化分为3个分区的基础上，以土体达到朗肯主动极限平衡状态时为例，得出墙后土体极限水平变位随土层深度呈抛物线形变化的规律。结合工程实际情况，提出了在小变位条件下考虑墙体位移、开挖深度和嵌固深度影响的朗肯主动土压力计算公式。

Abstract

Aiming at the rationality and limitation of the Rankine earth pressure theory to the characteristics of bracing for foundation pits and the specific soil conditions

the discussions are carried on. And the insufficiencies in the calculation method of bracing for foundation pits are pointed out. Taking the active limiting equilibrium condition of retained soil stress for example

the rule that the active limiting horizontal displacement along with the depth of retained soil accords with parabolic equation base on the earth deformation regions in foundation excavation is obtained. According to the need in the project

considering the effect of wall displacement

depth of excavation and embedded depth on the calculation method of the Rankine active earth pressure is proposed

under the small displacement condition.

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