自稳式深大基坑开挖卸载扰动位移一般规律

发布时间：2018-03-09 21:11

  本文选题：基坑开挖　切入点：扰动位移峰值分布　出处：《应用力学学报》2016年06期 　论文类型：期刊论文

【摘要】：采用一般化基坑开挖数值模型,系统研究了基坑开挖扰动位移峰值分布的区域性及其随宽深比、土体变形参数、土体强度参数等的变化规律和力学成因。建立了水平位移峰值、竖向位移峰值随基坑宽深比的统一计算公式。在参数敏感性分析系统基础上,建立了考虑土体强度特性、刚度特性等综合条件下基坑开挖扰动位移预测统一计算公式。该研究对基坑围护结构参数设计以及开挖稳定性的预测具有参考意义。
[Abstract]:Based on the general numerical model of foundation pit excavation, this paper systematically studies the regional distribution of disturbance displacement peak distribution of foundation pit excavation, the variation law of soil deformation parameter, soil deformation parameter and soil strength parameter with width to depth ratio and mechanical origin, and establishes the horizontal displacement peak value. Based on the parameter sensitivity analysis system, a unified formula for calculating the peak value of vertical displacement with the ratio of width to depth of foundation pit is established, and the strength characteristics of soil are taken into account. The unified calculation formula for prediction of disturbance displacement in excavation under comprehensive conditions such as stiffness characteristics is of reference significance for the parameter design of foundation pit retaining structure and the prediction of excavation stability.
【作者单位】： 上海交通大学船舶海洋与建筑工程学院;上海交通大学海洋水下工程科学研究院;
【分类号】：TU753
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本文编号：1590274