Research on staged characteristics of lateral pressure coefficient K0 of soft clay

ZHAO Yu-hua; SHEN Ri-geng; LI Qing

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Research on staged characteristics of lateral pressure coefficient K0 of soft clay

更新时间：2026-06-25

- Research on staged characteristics of lateral pressure coefficient K0 of soft clay
- Vol. 29, Issue 5, (2008)
- 作者机构：
  
  上海市城市建设设计研究院,上海,200125
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：24 July 2013，
  
  Published：2008
- 稿件说明：
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ZHAO Yu-hua, SHEN Ri-geng, LI Qing. Research on staged characteristics of lateral pressure coefficient K0 of soft clay[J]. 2008, 29(5).
DOI：

ZHAO Yu-hua, SHEN Ri-geng, LI Qing. Research on staged characteristics of lateral pressure coefficient K0 of soft clay[J]. 2008, 29(5). DOI：

摘要

沿海软黏土的侧压力系数具有阶段性特征：当试验荷载P （土样的残余结构强度）时，值较小，试样的结构性好，呈现出似刚性的材料特征，侧压力系数小；当时，值增大，土的微结构破坏，呈现出弹塑性体的材料特征，侧压力系数增大。而在工程实践中，受成孔、取土等诸多因素干扰，欠固结-正常固结的软黏性土的微结构的结构性易被破坏，使指标的阶段性特征不明显。

Abstract

It is improved that there is staged characteristics of lateral pressure coefficient K0 of soft clay. When the test load P is less than sample’s remaining structure strength

the value of is small

and when

the value of K0 is increased. It’s the reflection of the staged characteristics of soft clay’s mechanical property. When

the structure of soil sample is undamaged

the sample is similar to a rigid material

the value is small; When

soils microstructure is damaged

the sample is changed to be elastoplastic material

the value is increased. In geotechnical practices

the sample is disturbed during drilling and sampling

the microstructure of under-consolidated or normal-consolidated soft clay is destroyed

the staged characteristics of index is disappear.

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