河道区深基坑应用PC工法组合钢管桩支护施工及应急加固处理技术  

Application of PC Construction Method Combined Steel Pipe Pile Support Construction and Emergency Reinforcement Technology for Deep Foundation Pit in River Area

作　　者：张文华 华锦耀 ZHANG Wenhua;HUA Jinyao(Ningbo Construction Engineering Group Co.,Ltd.,Ningbo,Zhejiang 315040,China;Zhejiang Hongchen Construction Co.,Ltd.,Ningbo,Zhejiang 315032,China)

机构地区：[1]宁波建工工程集团有限公司,浙江宁波315040 [2]浙江鸿晨建设有限公司,浙江宁波315032

出　　处：《建筑施工》2022年第4期648-650,共3页Building Construction

摘　　要：以宁波市五江口河道中深基坑施工为例,介绍了该深基坑两半幅式先后施工PC工法组合钢管桩结合2道钢管支撑支护与分阶段挖土施工技术。在分析基坑险情的基础上,总结了灌水和浇筑水下混凝土的应急措施,以及增加1道钢管支撑等加固处理技术。Taking the deep foundation pit construction of Wujiangkou River in Ningbo as an example,the construction technology of PC construction method combined steel pipe pile,two steel pipe support and phased excavation of the deep foundation pit is introduced.On the basis of analyzing the dangerous situation of foundation pit,the emergency measures of watering and pouring underwater concrete,as well as the reinforcement treatment technology such as adding a steel pipe support are summarized.

关 键 词：河道区深基坑 PC工法组合钢管桩 支护施工 应急加固 

分 类 号：TU753[建筑科学—建筑技术科学]