邻近基坑施工对某住宅楼影响数值分析研究.pdf

2016年10月上 施工技术 第45卷第19期 CONSTRUCTION TECHNOLOGY 27 D0I:10.7672/5j52016190027 邻近基坑施工对某住宅楼影响数值分析研究 李旭光1，王晓磊2，付素娟3，贾媛媛 (1.河北建研科技有限公司，河北石家庄050021；2.河北工程大学土木工程学院，河北邯郸056038； 3.河北省建筑科学研究院，河北石家庄050021) [摘要]结合某住宅楼纠倾工程实例，采用有限元软件对深厚软土地基上基坑降水、开挖施工对邻近建筑物的影响 进行了三维数值模拟分析.从模拟结果中提取建筑基底土体变形及结构应力和应变结果进行分析，结果表明：邻 近基坑降水引起地基土体有效应力的增加以及基坑开挖造成土体的塑性流动是该楼倾斜的主要原因. [关键词]基坑：降水；数值模拟；变形 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2016)13-0027-03 Numerical Analysis of the Impact of Adjacent Foundation Excavation Construction on a Residential Building Li Xuguang Wang Xiaolei Fu Sujuan Jia Yuanyuan' (1.Hebei Building Research Engineering Co.Ld.Shijiazhuang Hebei 050021 China;2.College of Civil Engineering Hebei University of Engineering Handan Hebei 056038 China;3.Hebei Academy of Building Research Shijiazhuang Hebei 050021 China) Abstract:Based on an example of a residential building rectification project in deep soft soil foundation site a 3D numerical simulation was used to analyze the influence of foundation excavation precipitation and excavation on the adjacent buildings.The simulation results of the soil deformation and the structural stress and strain of the base soil were extracted for analyzing.The results show that the effective stress of foundation soil increased make the recurrence of soil consolidation caused by the adjacent foundation excavation precipitation and the exeavation casing the soil plastic flow are the main reasons of the tilt. Key words:foundation excavation precipitation;simulations;...