深基坑土钉支护的数值模拟分析  

FEM Analysis for Soil Nailing in Deep Foundation Pit Excavation

作　　者：贺俊征[1] 阎永山 张黎明[1] 王在泉[1] 

机构地区：[1]青岛理工大学矿业工程研究所,青岛266033 [2]济南卷烟厂技术装备处,济南250100

出　　处：《青岛建筑工程学院学报》2005年第2期18-20,共3页Journal of Qingdao Institute of Architecture and Engineering

摘　　要：根据土钉支护的特点,建立三维有限元计算模型模拟基坑开挖与支护的施工过程.结果表明,基坑开挖应采用竖直方向分层、水平方向分段进行的方法,在深度较大的地方分段的长度应适当减小,超挖对基坑边壁的竖直方向变形影响很大,且使边壁的水平方向变形量增大,应当尽量避免超挖出现.Based on the characteristics of soil nailing, a three dimensional finite element model is formulated in which the construction procedure of excavation is simulated. According to the results, it is found that stage by stage excavation should be adopted for the deep foundation pit excavation. With the increase of excavation depth, the length of segment should be decreased. In addition, overbreaking greatly affects the vertical deformation, and aggravates horizontal deformation. So it should be avoided.

关 键 词：土钉支护 有限元 超挖 

分 类 号：TU470.3[建筑科学—结构工程]