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三门湾项目龙王头湾7#墩处基岩外露、岩面倾斜、表面淤泥层厚,受涨落潮影响大,施工难度大。本文细述7#墩施工方案设计、比选,对钢管混凝土基础平台+套箱围堰方案和混凝土围堰+钢模板方案进行详细的优缺点分析,从而选择本工程最优的施工方案。为类似环境下桥梁基础施工提供借鉴指导。
The bedrock of Pier # 7 in Longwangtouwan of Sanmen Bay Project is exposed, the rock face is inclined and the silt layer is thick on the surface, which is greatly affected by the ebb and flow of tidal flats. The construction is difficult. This paper describes the construction of 7 # pier design, comparison and selection of concrete filled steel tubular foundation plan + cofferdam cofferdam and concrete plank + steel template program analysis of the advantages and disadvantages in detail, so as to select the project optimal construction program. Provide reference guidance for bridge foundation construction in similar environment.