高速公路大跨度连续刚构主墩深水基础施工技术  

Construction Technology of Deep Water Foundation for Long Span Continuous Rigid Frame Main Pier of Expressway

作　　者：熊国武 XIONG Guowu(China Railway No.8 Engineering Group Co.,Ltd.,Chengdu 610036,China)

机构地区：[1]中铁八局集团有限公司,成都610036

出　　处：《路基工程》2023年第3期160-164,共5页Subgrade Engineering

摘　　要：研究乐山至西昌高速公路(乐山至马边段)马边河大桥主墩深水基础施工技术要点,将钢套箱围堰施工设计优化为筑岛土围堰和钢板桩施工,保证汛期桥梁安全、高效施工。采用钢管柱和贝雷梁相结合的钢栈桥作为施工通道,选用合适管径薄壁钢护筒进行水下混凝土导管灌注,保证了水下桩基钻孔的精度和混凝土灌注的质量。It studies the key points of the construction technology for the deep water foundation of the main pier of the Mabian River Bridge on Leshan—Xichang Expressway(Leshan—Mabianpo),and optimizes the construction design of the steel boxed cofferdam into the construction of building island soil cofferdam and steel sheet pile to ensure the safe and efficient construction of the bridge during the flood season.The steel trestle bridge combined with steel pipe columns and Bailey beams is used as the construction channel,and the thin-walled steel casing with suitable pipe diameter is selected for underwater concrete conduit pouring,ensuring the accuracy of underwater pile foundation drilling and the quality of concrete pouring.

关 键 词：筑岛土围堰 钢板桩 水下桩基 导管灌注 大体积混凝土 降低成本 

分 类 号：U412.366[交通运输工程—道路与铁道工程]