深水群桩基础的关键施工技术研究  

Research on Key Construction Techniques for Pile Group Foundations in Deep Water

作　　者：郭征红[1] 徐伟[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《结构工程师》2007年第6期70-73,82,共5页Structural Engineers

基　　金："十一五"国家科技支撑计划项目(2006BAG04B05)

摘　　要：随着桥梁工程建设规模的扩大,对其深水基础施工技术的要求也越来越高。在综述国内外桥梁深水基础发展与现状的基础上,以实际特大型桥梁工程为例,研究我国特有且普遍应用的双壁钢吊箱围堰加钻孔灌注桩高桩承台群桩基础结构的关键施工技术。主要总结了大型施工临时结构(桩基施工平台与钢吊箱围堰)在结构方案、施工工艺以及设计计算等方面的改进和技术创新;并根据施工结构的特点扩充了力学性能分析的方法和内容;进而提出了此类深水群桩基础施工中目前亟待解决的主要问题及今后的研究方向,为同类工程提供经验及技术参考。In company with scale-up of the bridge construction, the demands of construction techniques for bridge deepwater foundations are more and more exigent. On the basis of the overview of development and status quo about the bridge deepwater foundations at home and abroad, researches on key construction techniques of the elevated pile group foundation structure were carried out by taking an actual extra large-scale bridge construction as an example, which is composed of double-wall steel suspension box cofferdam and cast in-situ piling pile. Innovations of large-scale temporary structures （including construction platform of pile foundation and steel suspension box cofferdam） were mainly summarized from the aspect of structure scheme, construction technology and design calculation and so on. Mechanical behavior analysis of structures was widened in both method and content according to the features of construction structures. The main problems which need to be solved urgently were raised and some future directions of research were proposed.

关 键 词：深水群桩基础 施工技术 桩基施工平台 钢吊箱围堰 结构方案 力学性能分析 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]