Research on critical height of reinforced slopes under seismic load

LIN Yong-liang; LI Xin-xing

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Research on critical height of reinforced slopes under seismic load

更新时间：2026-06-25

- Research on critical height of reinforced slopes under seismic load
- Vol. 29, Issue S1, (2008)
- 作者机构：
  
  1. 河海大学岩土工程研究所,南京,210098
  2. 上海市隧道工程轨道交通设计研究院技术研发中心,上海,200070
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU413.6
- Online First：15 April 2016，
  
  Published：2008
- 稿件说明：
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LIN Yong-liang, LI Xin-xing. Research on critical height of reinforced slopes under seismic load[J]. 2008, 29(S1).
DOI：

LIN Yong-liang, LI Xin-xing. Research on critical height of reinforced slopes under seismic load[J]. 2008, 29(S1). DOI：

摘要

以塑性极限分析理论为基础，假定破裂面为对数螺旋面，考虑加筋机理和地震力的作用，提出了加筋土坡临界高度的计算模型。应用该计算模型，不仅能考虑地震力的作用，而且能考虑不同的加筋机理对临界高度的影响。通过与前人静力试验结果的对比发现，基于复合加筋机理得到的临界高度比基于单一加筋机理得到的临界高度要偏大，且更接近于实测值，表明了该理论及其求解方法的有效性和可靠性。通过对地震作用下加筋边坡的临界高度分析表明，地震力作用下摩擦加筋机理对临界高度基本没有影响，主要是准粘聚力机理在起作用。该方法可对加筋边坡临界高度的设计提供有益的指导和参考。

Abstract

A new computational model for critical height of reinforced slope is presented based on kinematical approach. A rotational failure mechanism is used and the failure surface is assumed to be a log-spiral surface. In this method

The principle of quasi-cohesion and friction-bar theory are both introduced into the limit analysis of reinforced slope. The SQP method is employed in the optimization scheme. Comparing to the previous experimental results

it is found that the critical height with the composite reinforcement mechanism is slightly higher than that with simplex reinforced theory; and it is more close to the experimental values. In order to evaluate the influence of seismic force

a case study is given. Results show that quasi-cohesion theory is more efficient

while friction-bar theory can be omitted. The proposed method will provide some beneficial guidance for critical height design of reinforced slope.

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