软土基坑开挖对邻近建筑物的影响分析  

ANALYSIS OF RESPONSES OF BUILDING ADJACENT TO EXCAVATION IN SOFT-SOIL AREA

作　　者：李志伟 LI Zhi-wei(Fujian Academy of Building Research Co.,Ltd.,350025,Fuzhou,China;Fujian Key Laboratory of Green Building Technology,350025,Fuzhou,China)

机构地区：[1]福建省建筑科学研究院有限责任公司,福州350025 [2]福建省绿色建筑技术重点实验室,福州350025

出　　处：《建筑技术》2019年第12期1454-1457,共4页Architecture Technology

基　　金：福建省自然科学基金资助项目(2019JO5129);福建省建设科技研究开发项目(2012K15)。

摘　　要：当建筑物的刚度较大时,由基坑开挖所引发的邻近建筑物的变形主要表现为刚体转动,而建筑物的挠曲变形相对较小。当软弱土层厚度较大时,基坑开挖不但会引发浅基础建筑发生较显著的沉降,也会导致桩基础建筑物发生一定的沉降。当建筑物位于基坑的阳角区域时,应采取有效措施对围护结构刚度予以加强,并充分考虑建筑物超载对围护结构变形的影响,以尽可能地避免对邻近建筑物造成的破坏。When the stiffness of the building is large,the performance of the building affected by the excavation primarily appears as rigid body motion,but the deflection deformation of the building is relatively small.When the thickness of the soft-soil is large in site,significant settlement will be occurred on the building with shallow foundation.Moreover,the deformation of the foundation will also result in a certain degree of settlement on the building with pile foundation.When the building is located in the convex location of foundation pit,the retaining structure should be strengthened using effective measures,and the influence of overload caused by the building weight should be taken into account on the deformation of retaining structure,so as to minimize the damage to the adjacent building.

关 键 词：软土 基坑 建筑物沉降 

分 类 号：TU477[建筑科学—结构工程]