土钉支护现场量测及工作性能分析  

FIELD TEST AND ANALYSIS ON THE PERFORMANCE OF SOIL NAILING

作　　者：葛燕锋[1] 王志伟[1] 高振林[1] 

机构地区：[1]北方工业大学建筑工程学院,北京100041

出　　处：《建筑技术》2007年第7期542-544,共3页Architecture Technology

基　　金：北京市教育委员会科技发展计划面上项目资助;项目编号2002KJ030

摘　　要：通过对基坑土钉支护的坑壁水平位移和土钉应力现场量测数据分析表明:土体最大水平位移发生于基坑顶部;基坑深度范围内中部土钉受力最大;土钉最大应力作用点的连线为边坡最危险滑裂面的位置。土钉布置宜上长下短,下部土钉适当加密,以抵抗基坑底部存在的剪应力集中。Analysis on field testing data of horizontal displacement of side of foundation pit and steel bar stress of soil nailing retaining demonstrates that the maximum horizontal displacement occurs on the top of side of foundation pit, and the maximum soil nailing tension within range of whole depth occurs in the middle depth, and the curve which is formed by position of he maximum soil nailing tension may be the most dangerous sliding curve of side of foundation pit. the length of soil nailing should be long at upper row and short at lower row, and nail space of the latter should be shortened to prevent shear failure at the slope foot.

关 键 词：土钉支护 现场量测 水平位移 土钉应力 

分 类 号：TU753[建筑科学—建筑技术科学]