跨海大桥浅水区新型钢板桩围堰施工技术

摘要

针对跨海大桥浅水区承台施工，通过对钢吊箱围堰、拉森Ⅳ型钢板桩围堰和新型钢板桩围堰的分析对比，在省道263南北长山联岛大桥承台施工中采用了新型钢板桩围堰，该钢板桩围堰结构简单、设计新颖、受力明确、稳定可靠，具有较强的抗风浪能力和较高的安全和稳定性，确保了承台和墩身的顺利施工，保证了承台和墩柱的施工质量，可为强风浪频发海域的海上桥梁施工提供参考和借鉴。%Aiming at construction of bearing platform cofferdam in shoal water,through comparative analysis with steel boxed cofferdam and Lassen IV type steel sheet-pile cofferdam,a new type steel pile cofferdam is used in North &South Changshan Connecting Bridge at Provincial Highway 263.This cofferdam is simple and new in design,clear in force bear-ing distribution,stable and reliable in construction against great storm,so it is suitable for crossing strait engineering in shoal water.