半日潮下深水易冲刷流域承台高低双层钢板桩施工技术

Construction technology of high and low double-layer steel sheet pile caps in deep water easily scoured basin under half-day tide

以道庆洲大桥S16#墩为背景,该墩位于先前航道处,地质为中砂且水深水流急冲刷强度大,中砂抗冲刷能力弱,冲刷深度大,通过采用高低双层钢板桩施工,能够成功地解决单层钢板桩抗冲刷、节约成本及施工安全问题,工程实践证明此方案可行,能够节约工期、成本、保证安全质量,为后续桥梁在水深水流急冲刷强度大环境下施工提供了实战经验。

Taking the S16#pier of Daoqingzhou Bridge as the background,which is located in the previous passage,with geological condition of medium sand and the depth of water erosion intensity big,medium sand scour resistance weak,scour depth big.By means of double steel sheet pile construction,it is able to successfully solve the anti-scouring,cost and safety problems of mono-layer steel sheet pile.Engineering practices prove that this scheme is feasible,and can save time,cost,ensure the quality,and provide practical experience for subsequent bridges construction under deep and high erosion intensity water environment.