天津某基坑围护结构变形及周围建筑沉降分析  

Analysis of the Deformation of the Retaining Structure and the Settlement of Adjacent Buildings for an Excavation Project in Tianjin

作　　者：纪海东 邢卫民[1] 张立明[2] 陈涛[1] 

机构地区：[1]天津市勘察院,天津300191 [2]天津市地下铁道集团有限公司,天津300000

出　　处：《测绘与空间地理信息》2016年第6期43-46,共4页Geomatics & Spatial Information Technology

基　　金：天津市建委科技项目(2014-9)资助

摘　　要：随着近年来城市化进程加速,城市用地日趋紧张。越来越多的基坑工程需要在建筑、道路、管线密集地区进行,这不仅对基坑本身变形大小提出了极高要求,其对周围环境的影响也引起大家越来越多的重视。通过对天津某实际基坑工程实测数据进行分析研究,得到以下结论:增加围护结构整体刚度和长度对减小围护结构变形有显著作用;基坑附近超载会明显增大围护结构的变形;由基坑开挖而引起的周围地表沉降曲线呈凹槽形。With the continuous development of cities,the lack of the urban land is becoming increasingly severe. Currently,more and more large- scale excavation projects were constructed in densely built- up areas,therefore it is crucial to control the deformations of the excavation strictly. The influence of the excavation on surrounding environments has attracted many people’s attention. Through the analysis of the measured data of an excavation project in Tianjin,it can be concluded that： the increasing of the entire stiffness and length of the retaining structure can effectively reduce the deformation of the retaining structure; the adjacent surcharge load can obviously increase the deformation of the retaining structure; the settlement curve of the ground surface outside the excavation exhibits a trough shape.

关 键 词：基坑工程 围护结构 水平位移 沉降 

分 类 号：P258[天文地球—测绘科学与技术] TU196[建筑科学—建筑理论]