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临近建筑物对基坑变形影响的数值模拟分析

发表时间:2013-01-31  浏览量:1491  下载量:482
全部作者: 张红叶,李鸿晶
作者单位: 南京工业大学土木工程学院
摘 要: 以淮安某深基坑工程为背景,利用有限元软件ABAQUS建立该基坑工程的三维数值分析模型,对深基坑的施工过程进行模拟。主要研究了临近建筑物参数,如建筑物位置、建筑荷载大小等不同情况对开挖过程中基坑变形的影响效应,并得到基坑周边场地地表的一系列变形规律。依据数值分析得到了一系列有益结论:建筑物至基坑边缘距离越远,对开挖过程的基坑变形影响越小;且偏离基坑轴心位置处的建筑物对基坑变形的影响比轴心位置处的建筑物对基坑变形的影响大。此外,建筑物本身的荷载越大对基坑变形的影响也越大。上述结论对实际工程的设计和施工有一定指导意义和参考价值。
关 键 词: 工程结构;基坑工况;基坑开挖;数值模拟;有限元分析
Title: Numerical simulation study on influence of nearby buildings to deep excavation
Author: ZHANG Hongye, LI Hongjing
Organization: College of Civil Engineering, Nanjing University of Technology
Abstract: Taking deep foundation pit enginering in Huai’an as background, the process of deep excavation engineering was simulated using 3D analysis model based on finite element method ABAQUS. The influences of nearby building parameters such as building location, and building loads on foundation pit deformation in the process of foundation pit excavation were studied, and the deformational laws of the soil around foundation pit were obtained. According to the analysis, we obtained the following results: with the farther distance of buildings from foundation pit, the influence on foundation pit deformation reduced, and the influence of nearby building in axis location on excavation is smaller than the building deviating from the axis location. In addition, with bigger building load, the bigger influence occurred to excavation. The conclusions have guiding significances for the design and construction of excavation.
Key words: engineering structure; foundation pit enginering; foundation pit excavation; numerical simulation; finite element method
发表期数: 2013年1月第2期
引用格式: 张红叶,李鸿晶. 临近建筑物对基坑变形影响的数值模拟分析[J]. 中国科技论文在线精品论文,2013,6(2):147-152.
 
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