摘要
随着建设资源节约和环境友好工程需求,以及越江跨海桥梁耐久性的要求日益提高,结构轻盈、造价低、较大跨越能力及低养护成本的钢-混凝土组合梁正成为大型越江跨海桥梁及城市桥梁的主要结构形式,而该结构关键问题之一是解决不同施工工艺下的内力调整技术,结合上海长江隧桥工程采用国内最大的105 m钢-混凝土组合梁连续梁建设,介绍在工厂化整体预制、整体吊装施工条件下的2次内力调整技术,使结构的内力分配更加合理。
Along with the need of the construction of the resource-saving and environmentfriendly projects and the growing demand for durability of the bridges crossing rivers and sea, the steel and concrete composite girders that are structurally lightweight, cost-effective and that have great spanning capacity and low maintenance cost are becoming the principal structural type for the major river-crossing, sea-crossing bridges and city bridges while one of the key issues to the girders is to provide the girders with the proper techniques of internal force adjustment under utilization of different construction technology. With reference to the construction of the 105-m span steel and concrete composite continuous girders, the longest span girders of their kind domestically, for the Shanghai Changjiang River Tunnel and Bridge Project, this paper presents the techniques of the two-time internal force adjustment for the girders that are prefabricated in shop and lifted and installed in field in each full span in order to achieve a more rational distribution of the internal force in the girders.
出处
《世界桥梁》
北大核心
2009年第A01期95-97,101,共4页
World Bridges
关键词
上海长江大桥
组合结构
连续梁
内力调整
Shanghai Changjiang River Bridge
composite structure
continuous girder
internal force adjustment
