观音寺长江大桥主墩基坑开挖及支护  

Excavation and Support of Main Pier Foundation Pit of Guanyinsi Yangtze River Bridge

作　　者：陈铁钢 谌健 姜剑峰 Chen Tiegang;Chen Jian;Jiang Jianfeng(Hunan Road and Bridge Construction Group Co.,Ltd.,Changsha,China)

机构地区：[1]湖南路桥建设集团有限责任公司,湖南长沙

出　　处：《科学技术创新》2023年第10期179-185,共7页Scientific and Technological Innovation

摘　　要：文章结合观音寺长江大桥7#主墩基坑支护工程实例,采用直混凝土灌注桩+锁扣钢管桩进行7#主墩基坑支护,其钻孔灌注桩作为大堤抗滑桩作用,兼作承台支护作用,基坑内设置三层围檩内支撑系统;通过该方案高效、安全、优质的完成了观音寺大桥主墩承台基坑开挖。Based on an example of the foundation pit support project for the 7#main pier of Guanyinsi Yangtze River Bridge,this article uses straight concrete cast-in-situ piles+lock steel pipe piles for the foundation pit support of the 7#main pier.The bored cast-in-situ piles serve as anti-slide piles for the embankment and also serve as bearing platform support.A three-layer purlin internal support system is provided in the foundation pit;Through this scheme,the foundation pit excavation of the main pier cap of the Guanyinsi Bridge was completed efficiently,safely,and with high quality.

关 键 词：桥梁工程 河堤抗滑桩 锁口钢管桩 基坑开挖与支护 

分 类 号：U443[建筑科学—桥梁与隧道工程]