桥梁深基坑钢板桩围堰施工技术研究  

Research on Construction Technology of Steel Sheet Pile Cofferdam for Deep Foundation Pit of Bridges

作　　者：郭志强 GUO Zhi-qiang(The Second Engineering Co.,Ltd.of China Railway 17th Bureau Group,Xi'an 710000,China)

机构地区：[1]中铁十七局集团第二工程有限公司,西安710000

出　　处：《价值工程》2024年第11期79-81,共3页Value Engineering

摘　　要：江门水道特大桥采用(88+2×160+88)m连续刚构跨越江门水道及九子沙河道,水面宽度约350m,航道通航等级为Ⅳ级。其中38#、39#、40#墩为桥梁主墩,分别位于九子沙河河道、九子沙河与江门水道夹心三角洲、江门水道河道中,采用钢板桩围堰进行深基坑防护,然后进行承台施工。本文结合江门水道特大桥38#墩钢板桩围堰水下封底施工实例,介绍钢板桩围堰水下封底施工技术,为后续类似施工提供经验。The Jiangmen Waterway Extra Large Bridge adopts a(88+2×160+88)m continuous rigid frame to cross the Jiangmen Waterway and Jiuzisha River,with a water surface width of about 350m and a navigation level of Class IV.Among them,Piers 38#,39#,and 40#are the main piers of the bridge,located respectively in the Jiuzisha River channel,the Jiuzisha River and Jiangmen Waterway Sandwich Delta,and the Jiangmen Waterway channel.Steel sheet pile cofferdams are used for deep foundation pit protection,and then bearing platform construction is carried out.This article combines the example of underwater bottom sealing construction of steel sheet pile cofferdam for Pier 38 of Jiangmen Waterway Extra Large Bridge to introduce the underwater bottom sealing construction technology of steel sheet pile cofferdam,providing experience for similar construction in the future.

关 键 词：深基坑钢板桩围堰 内支撑 水下封底 

分 类 号：U445.55[建筑科学—桥梁与隧道工程]