新型钢板桩围堰施工工序及受力性能研究

Research on Construction Process and Mechanical Performance of New Steel Sheet Pile Cofferdam

为研究“拉森钢板桩+钢筋混凝土圈梁组合围堰”的工程适用性,以凤翔洲景观云桥作为依托工点,采取室内模型试验得出如下结论:①对于“素填土+卵石层+中分化泥岩”的地层,基坑开挖过程中会出现渗水现象;②桩底土压力表明钢板桩宽边中部位置受力最大;③钢板桩桩体本身受到的土压力自上而下逐渐减小。

In order to study the engineering applicability of the"Lassen steel sheet pile+reinforced concrete ring beam cofferdam",the Fengxiangzhou Landscape Cloud Bridge was used as the supporting site,and the indoor model test was adopted to draw the following conclusions:①For the"plain filling+pebble layer+medium differentiation mudstone"stratum,water seepage will occur during the excavation of the foundation pit;②The soil pressure at the bottom of the pile indicates that the central position of the steel sheet pile at the middle of the wide edge is the most stressed;③The soil pressure at the steel sheet pile body itself gradually decreases from top to bottom.