复合土钉支护基坑变形试验分析

摘要

为了研究复合土钉支护基坑变形规律,在基坑开挖现场建立变形监测试验方案,对基坑及其周围土体的变形跟踪监测,整理数据并分析得出,复合土钉支护基坑最大水平位移出现在距离基坑顶部0.36H(H为基坑开挖深度)处,整体变形成“鼓肚”形;基坑顶部地面最大沉降出现在距离基坑边沿0.32H处,并以此最中心向两侧呈沉降“漏斗”形发展.%In order to study the deformation of composite soil nailing foundation pit,establishing the field test of deformation monitoring in the foundation pit excavation.Getting the deformation law from the monitoring data of foundation pit and surrounding soil,we see that the maximum horizontal displacement appears in the distance under pit top 0.36H (H is the excavation depth) and the maximum settlement appears in the distance 0.32H to the edge of excavation.