Experimental study on HS-small model parameters of soil considering disturbance and its application in foundation pit engineering

BAI Shi-yu; WANG Wen-jun; XIE Xin-yu; ZHU De-liang

doi:10.16285/j.rsm.2022.0228

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Experimental study on HS-small model parameters of soil considering disturbance and its application in foundation pit engineering

更新时间：2026-06-25

- Experimental study on HS-small model parameters of soil considering disturbance and its application in foundation pit engineering
- Vol. 44, Issue 1, Pages: 206-216(2023)
- 作者机构：
  
  1. 浙江大学工程师学院,浙江,杭州,310015
  2. 浙大宁波理工学院,浙江,宁波,315100
  3. 浙江大学滨海和城市岩土工程研究中心,浙江,杭州,310058
  4. 浙江大学温州研究院,浙江,温州,325036
  5. 武夷学院，福建武夷山,354300
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.0228
  CLC： TU41
- Online First：13 January 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
BAI Shi-yu, WANG Wen-jun, XIE Xin-yu, et al. Experimental study on HS-small model parameters of soil considering disturbance and its application in foundation pit engineering[J]. 2023, 44(1): 206-216.
DOI：

BAI Shi-yu, WANG Wen-jun, XIE Xin-yu, et al. Experimental study on HS-small model parameters of soil considering disturbance and its application in foundation pit engineering[J]. 2023, 44(1): 206-216. DOI： 10.16285/j.rsm.2022.0228.

摘要

天然结构性土体容易受到各类施工扰动，导致土体物理力学性质改变，进而影响工程稳定、变形以及邻近环境。针对宁波两种典型土体，分别对原状土和轻、重扰动土以及重塑土开展了三轴试验及一维压缩试验，分析了扰动度对小应变硬化模型（HS-small model，简称HSS模型）主要参数的影响规律，并将其应用于宁波某基坑工程，利用Plaxis3D分析了考虑周边土体扰动影响的坑后土体水平位移变化。研究结果表明，扰动会使土体的强度及刚度参数降低。对于淤泥质黏土，轻扰动试样的参考切线模量E、参考割线模量E及参考加卸载模量E值分别降低14%、10%、2%，重扰动试样三参数分别降低43%、14%、15%，粉质黏土三参数也呈现相似降低趋势。在考虑土体扰动影响的情况下，基坑周边两个测斜孔的最大水平位移值分别增大13%、15%，更加接近实测值。研究结果可为小应变硬化模型的参数取值以及考虑扰动影响的基坑工程分析计算提供指导。

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