泵闸工程基坑支护拆换撑施工工法  

Construction method of foundation pit supporting,removing and replacing bracing in pump sluice project

作　　者：王志明 李洪生 郑德喜 WANG Zhiming;LI Hongsheng;ZHENG Dexi(Zhejiang No.1 Hydropower Construction Group Co., Ltd., Hangzhou 310051, China)

机构地区：[1]浙江省第一水电建设集团股份有限公司,浙江杭州310051

出　　处：《水利建设与管理》2019年第2期60-64,共5页Water Conservancy Construction and Management

摘　　要：泵闸基坑开挖场地小、支护要求高,拆换撑施工工法可将水闸主体结构底板、墩墙混凝土与传力带相结合进行整体浇筑,从而形成完整的换撑体系;施工中采用逆作法自上而下完成支撑,解决了施工场地狭小的问题;金刚石绳锯拆除法,对周围环境扰动小,社会效益良好。此施工工法操作简单、周期短,可加快施工进度、降低施工成本,经济效益显著,值得推广应用。Pump sluice foundation pit excavation is characterized by small site and high support requirements. Main structure sluice floor, pier wall concrete and force transfer belt can be combined for overall pouring by the bracing removal and replacement construction method, thereby forming a complete bracing replacement system. Reverse method is used in the construction to complete the support from top to bottom. It solves the problem of narrow construction site. Diamond rope saw removal method has small disturbance to the surrounding environment, good social benefits, simple operation and short cycle, which can speed up the construction progress and reduce the construction cost. It has significant economic benefits, which is worthy of popularization and application.

关 键 词：深基坑 拆换撑施工 混凝土传力带 金刚石绳锯 

分 类 号：TV551.4[水利工程—水利水电工程]