深基坑狭窄空间地下防水护墙施工技术  

UNDERGROUND WATERPROOF GUARD WALL CONSTRUCTION TECHNIQUE IN DEEP FOUNDATION PIT NARROW SPACE

作　　者：刘滨[1] LIU Bin(Beijing Fourth Construction&Engineering Co.,Ltd.,100075,Beijing,China)

机构地区：[1]北京建工四建工程建设有限公司,北京100075

出　　处：《建筑技术》2022年第5期599-601,共3页Architecture Technology

摘　　要：本施工方法涉及深基坑条件桩锚护坡形式下肥槽空间狭小、地下外墙结构和防水施工的特殊施工方法。针对城市中心区场地狭小深基坑的施工项目,首先采用护坡桩外单侧支模浇筑混凝土,形成了外防内贴的防水施工作业面,同时解决了回填问题,然后再次采用单侧支模进行外墙结构施工,解决在该特殊情况下由于空间不足无法进行外墙外防水施工、肥槽回填土、地下防水施工和地下结构外墙的施工先后关系问题。可用于护坡桩范围内肥槽回填、防水施工、外墙结构施工,有效地保证了地下室外墙防水施工顺利展开,防止渗漏情况发生,施工顺序清晰,防水效果良好。This construction method is a special method for narrow foundation trench,underground external wall structure and waterproof construction in deep foundation pit with pile and anchor slope protection mode.Considering the narrow field of deep foundation pit project in urban center,concrete casting was firstly carried out by setting formwork at one side outside slope protection pile to form a waterproof working surface whose external side is waterproof and internal side is closely connected,and to solve the backfill problems.Thereafter,one-side formwork was erected for external wall structure construction,to solve the problem that the construction sequence among external wall waterproof construction,foundation trench backfilling,underground waterproof construction and underground external wall construction,due to the narrow construction space.This method could be used for foundation trench backfilling,waterproof construction and external wall structure construction within slope protection pile scope,to effectively guarantee the successful basement external wall waterproof construction,avoid leakage defect,realizing smooth construction and favorable waterproof effect.

关 键 词：护坡桩 预应力锚杆及钢梁 肥槽混凝土 结构外墙单侧模板 

分 类 号：TU753[建筑科学—建筑技术科学]