基于HSS模型与MCC模型的深基坑降水开挖变形分析
发布时间:2019-05-17 18:30
【摘要】:在施工过程中基础、隧道和基坑周围土体除少数区域发生明显塑性变形外,其他大部分区域土体均处于小应变状态(10-2%~10-1%)。本文采用PLAXIS和ABAQUS有限元软件,土体本构模型分别采用HS-Small模型和MCC模型,模拟基坑降水开挖,对基坑变形结果进行对比分析。结果表明,修正剑桥模型由于未能考虑土体小应变特性,基坑位移变形模拟结果相对HS-Small模型偏大,弯矩模拟结果偏小。在进行敏感环境下的基坑降水开挖问题的数值模拟时,应采用能考虑土体小应变特性的本构模型,如HSS模型。
[Abstract]:In the construction process, except for a few areas of plastic deformation, most of the soils around the tunnel and foundation pit are in a small strain state (10 鈮,
本文编号:2479315
[Abstract]:In the construction process, except for a few areas of plastic deformation, most of the soils around the tunnel and foundation pit are in a small strain state (10 鈮,
本文编号:2479315
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