基坑开挖对不同形式结构的影响分析  

Influence of deep foundation pit excavation on Difference Buildings

作　　者：郭亮[1] 

机构地区：[1]上海隧道工程股份有限公司,上海200081

出　　处：《福建建设科技》2014年第3期13-16,共4页Fujian Construction Science & Technology

摘　　要：基坑开挖会对周边建筑物产生影响,不同形式的结构所受的影响程度也不同,对此,结合某地铁深基坑开挖的工程实例,采用ABAQUS有限元软件建立三维数值模型,对邻近基坑的桩基框架结构、条基框架结构以及条基砌体结构的位移进行分析。结果表明:深基坑在开挖过程中周边建筑向坑内变形,并随着施工进行变形增大;桩基础在基坑开挖过程中,桩基会产生挠曲,桩基中部开始时向远离基坑方向倾斜。基于计算数据得到开挖监测预警值,为今后类似项目提供参考。Excavation will affect surrounding buildings .And different forms of structures suffered influence of different degree .Therefore, based on a example of deep excavation of the subway project , a three-dimensional numerical model is established by the ABAQUS finite element software to analyse the displacements of different buildings .The buildings include the frame structure with pile foundation , the frame structure with strip foundation and the masonry structure with strip foundation .The results showed that deformation of the surrounding buildings towords pit duting the excavation process of deep pit .And the displacement increase with the construction .For pile foundation , the middle of the pile will produce deflection away from foundation .The value of the excavation monitoring and early warning data basedon calculation provide reference for future similar projects .

关 键 词：基坑开挖 不同形式结构 数值模拟 水平位移 

分 类 号：TU753[建筑科学—建筑技术科学]