大治河整治工程挡墙坍塌修复施工方法分析

Collapse Repairing Construction of Retaining-wall in Dazhi River

大治河整治工程位于杭州市萧山区新街镇与坎山镇交叉口,河道南北朝向,东西两侧各为7m宽的村级道路,与三益线公路、北塘河相交,附近村庄密集,水陆交通繁忙;河道挡墙坍塌后,严重影响到日常交通和生活,对其施工方法更力求科学精密.针对该工程较为特殊的地形环境以及紧凑的工期进度,编织袋土围堰、灌砌块石阶梯挡墙施工、重力式挡墙基础处理、松木桩打设、C20混凝土钢筋混凝土底板施工、重力式挡墙等挡墙坍塌修复施工方法,效果良好.对类似的农田水利加固项目有一定的借鉴作用.

Retaining wall reinforcement engineering in watercourse is very common in various regions in China. Dazhi River regulation project is north-south located in the intersection of Xinjie and Kanshan, Xiaoshan District, with 7m wide road on the both sides, crossed with Sanyi Road and Beitang River, along with dense villages and busy transportation. The collapse of the river retaining wall seriously affected the daily traffic and life, asking for scientific and precise construction. The re- pairing plan is mainly focused on in this paper based on special terrain and compact schedule, including woven bag earth cofferdam, filling block retaining-wall, gravity and timber-pile foundation treatment, and C20 concrete baseboard construction, offering certain reference to the similar water conservancy reinforcement project.