深水桩基水中固定平台的设计与施工

结合昭待高速公路第16合同段毛家村2号特大桥工程实际,介绍该桥深水桩基施工中方案的比选及水中固定平台的结构形式与布置、钢管桩承载力计算等设计要点与施工关键技术。施工实践表明,采用的施工技术具有灵活、效率高等特点,对于地形复杂、狭小水域地段修建水中桥梁具有很好的借鉴意义。

Design and Construction of Fixed Platforms in Water for Deepwater Pile Foundations

With the No.2 Mega Bridge at Maojia Village of the 16th contracted section of the Zhaodai Expressway as a practical example, the comparison and choice of the construction plans for the construction of the deepwater pile foundation of the mega bridge are presented in the paper, with the structural forms and lay-out of the fixed platform in water, the calculation of the bearing capabilities of steel tube piles and other important points in design and key techniques of construction exposed in the paper. Practice shows that the construction technology adopted in the project is flexible and highly efficient. It may serve as a useful reference for the construction of other bridges in either complex geological conditions or narrow waters.