Stress Pathtriaxial Tests on the Lateral Soil of Foundation Pit during Excavation Process

陈志波; 钟理峰; 蔡廉锦; 季李通

doi:10.13409/j.cnki.jdpme.2016.06.014

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Stress Pathtriaxial Tests on the Lateral Soil of Foundation Pit during Excavation Process

更新时间：2025-12-11

- Stress Pathtriaxial Tests on the Lateral Soil of Foundation Pit during Excavation Process
- Vol. 36, Issue 6, Pages: 943-949(2016)
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- DOI：10.13409/j.cnki.jdpme.2016.06.014
  CLC： U41
- Published：2016
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[1]陈志波,钟理峰,蔡廉锦,季李通.基坑开挖过程坑侧土体应力路径试验研究[J].防灾减灾工程学报,2016,36(06):943-949.

陈志波, 钟理峰, 蔡廉锦, et al. Stress Pathtriaxial Tests on the Lateral Soil of Foundation Pit during Excavation Process[J]. 2016, 36(6): 943-949.
[1]陈志波,钟理峰,蔡廉锦,季李通.基坑开挖过程坑侧土体应力路径试验研究[J].防灾减灾工程学报,2016,36(06):943-949. DOI： 10.13409/j.cnki.jdpme.2016.06.014.

陈志波, 钟理峰, 蔡廉锦, et al. Stress Pathtriaxial Tests on the Lateral Soil of Foundation Pit during Excavation Process[J]. 2016, 36(6): 943-949. DOI： 10.13409/j.cnki.jdpme.2016.06.014.

摘要

随着基坑的开挖

基坑侧壁土体的竖向应力不变而侧向应力减小

侧壁土压力由静止土压力逐步向主动土压力变化。基于基坑开挖前、开挖过程及支护结构作用后坑侧土体的应力变化情况

开展了常规三轴固结不排水剪切试验、K0固结不排水剪切试验、K0固结侧向卸荷试验和不等压固结侧向卸荷不排水剪切试验等多种室内试验

对比分析了不同应力路径条件下土体的应力应变曲线、抗剪强度及孔隙水压力变化特征

总结了基坑开挖过程复杂应力路径下土体的应力应变特征及强度特性。

Abstract

The horizontal stress of the lateral soil of foundation pit was decreased from static earth pressure to active earth pressure with the excavation.Based on the stress change of the lateral soil during the excavation

the four types of tests

including triaxial consolidated undrained shear test

K0-consolidationundrained shear test

the lateral unloading K0-consolidation test and lateral unloading undrained shear test under differential consolidation

was carried out.The stress-strain curves

shear strength and pore water pressure were studied

then the characteristics of stressstrain and strength of soils under complex stress path were summarized.

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references

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