基坑开挖对邻近建筑物桩基础的影响研究

发布时间：2018-03-25 01:03

本文选题：邻近建筑　切入点：桩基　出处：《河北大学》2017年硕士论文

【摘要】：本文以框架结构建筑物桩基础为研究对象,建立基坑、桩基、土体有限元模型,通过对唐山某实际工程的监测数据进行整理与分析,并通过有限元软件进行数值建模计算,总结归纳基坑开挖对邻近框架结构建筑物桩基内力与变形影响的基本规律。基坑围护结构的选型与基坑开挖对周边环境影响的程度息息相关,本文选择悬臂型围护结构的基坑,运用有限元软件PLAXIS对邻近基坑的不同桩长、不同距离、不同刚度的建筑物桩基建立数值模型,通过分析计算得出建筑物桩基础受悬臂型基坑开挖影响的变形规律及内力变化情况。
[Abstract]:In this paper, the finite element model of foundation pit, pile foundation and soil is established by taking the pile foundation of frame structure building as the research object. The monitoring data of a practical project in Tangshan are collated and analyzed, and the numerical modeling calculation is carried out by finite element software. The basic law of the influence of excavation on the internal force and deformation of the pile foundation of the adjacent frame structure building is summarized and summarized. The selection of the retaining structure of the foundation pit is closely related to the degree of the influence of the excavation of the foundation pit on the surrounding environment. In this paper, the cantilever retaining structure is chosen for the foundation pit. The finite element software PLAXIS is used to establish a numerical model for the pile foundation of buildings with different pile length, different distance and different stiffness in adjacent foundation pit. Through analysis and calculation, the deformation law and internal force change of the pile foundation of building affected by cantilever foundation pit excavation are obtained.
【学位授予单位】：河北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU753

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