复杂海域条件下浅覆盖层深水基础施工方案设计

Design of Deep-water Foundation Construction Scheme for Shallow Overlay under Complex Sea Conditions

国内东南沿海某跨海大桥为公铁两用特大桥,跨越某海峡北东口海域。该桥浅覆盖层和无覆盖层深水基础占全桥水下基础的50%以上,桥址处海域情况复杂,施工受风、浪、流、航运和台风的影响大。文章以其为工程背景,针对复杂海域条件下浅覆盖层深水基础施工进行专项方案设计,以期为今后类似条件下水下基础施工提供有益的借鉴和参考。

A cross-sea bridge in southeast coast of China is a super-large rail-cum-bridge,across the north east estuary of a strait.The deep water foundation of shallow overlay and non-covered layer in this bridge accounts for over 50%of underwater foundation of total bridge,this bridge is located at compli-cated sea area,and the construction is largely affected by wind,waves,currents,shipping and typhoons.With it as the en-gineering background,this article conducted the special program design on the deep-water foundation con-struction of shallow overlay under complex sea conditions,thereby providing a useful reference for future con-struction of underwater foundation under similar conditions.