【作者】 魏纲； 苏勤卫； 李钢； 丁智；

【Author】 WEI Gang~1,SU Qin-wei~2,LI Gang~2,DING Zhi~1 1 Department of Civil Engineering,Zhejiang University City College,Hangzhou 310015 2 Institute of Geotechnical Engineering,Zhejiang University,Hangzhou 310058

【机构】 浙江大学城市学院土木工程系； 浙江大学建筑工程学院；

【摘要】 分析杭州市某过街隧道基坑工程施工对下卧隧道、周边建筑及地表竖向变形的影响。对该工程的周边环境、地质条件及测点布置情况作简要介绍。统计分析桩基施工和基坑开挖期间,下卧隧道、周边建筑和地表的累积竖向变形和附加竖向变形的监测数据。结果表明:桩基工程施工会引起隧道沉降,基坑开挖则导致隧道隆起;建筑物竖向位移大小,与离基坑距离远近的关系不是很密切;随着基坑开挖深度的增加,地表沉降量与沉降速率显著增加。同时,距离基坑越近,地表沉降量与沉降速率也越大。更多还原

【Abstract】 The responses of down tunnel,surrounding buildings and the surface to a excavation foundation pit in a passing street of Hangzhou are presented.The surrounding environment, geological conditions and field monitoring are summarized.Statistical analysis the cumulative and additional vertical deformation monitoring rate of the down tunnel,surrounding buildings and surface.Results show that:foundation project will cause the tunnel settlement,foundation pit excavation on the contrary;the relationship of building vertical displacement and distance from the pit are not close;with the foundation pit excavation depth increase,the amount of surface subsidence and sedimentation rate increased significantly,while the more recent from the pit,the greater the surface subsidence and sedimentation rate are.更多还原