摘要
以天津地铁2号线隧道盾构施工为背景,取沿盾构轴线右侧一6层框架居民楼为研究对象,基于ABAQUS软件,建立了隧道和邻近建筑物及其桩基的计算模型,分析盾构施工对邻近建筑物及其桩基础变形的影响。结果表明,隧道盾构施工导致地表沉降,引起框架结构及其桩基变形,框架整体向隧道盾构一侧倾斜。其中框架梁靠近中柱一端沉降较大,而框架中柱及其桩基也较两侧边柱及其桩基的沉降大。同时表明,盾构施工对邻近建筑物及地下桩基变形产生的影响是整体相关的,在隧道盾构施工时应引起相关设计与施工部门的注意。
The paper, with Tianjin Metro Line 2 tunnel shield construction as the background, takes a 6 floor framework residential building at the right side of the axis of the tunnel shield as the target for the study, based on the ABAQUS software, set up the calculation models of tunnel and adjacent buildings and their pile, analyzed the influence of shield construction on the deformation of adjacent buildings and pile foundation. Analysis shows that the construction of the tunnel shield leads to surface subsidence, causing deformation of the framework structure and underground pile, the whole framework has been inclined to the side of the tunnel shield. One frame beam near the end of the middle column had larger settlement, the middle column and pile had more settlement than the both sides. Also it shows that Shield construction impact on adjacent buildings and underground pile deformation is integrally related, the tunnel shield construction should be paid attention by the relevant design and construction departments.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2012年第6期39-43,共5页
Coal Geology & Exploration
关键词
隧道盾构
邻近建筑物
桩基础
数值分析
变形
tunnel shield
adjacent building
pile foundation
numerical analysis
deformation
