沪杭客运专线跨沪杭高速公路桥式方案研究  

Study of Bridge Type Options for Shanghai-Hangzhou Passenger Dedicated Railway Spanning Shanghai-Hangzhou Expressway

作　　者：严爱国[1] 

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《桥梁建设》2010年第3期59-62,共4页Bridge Construction

摘　　要：沪杭客运专线是沪昆客运专线的重要组成部分,在与沪杭高速公路斜交处拟以桥梁形式上跨该高速公路,综述了沪杭客运专线桥梁的桥式方案比选及结构体系研究。方案构思时选取了上承式拱桥、连续刚构、连续梁拱、V构4种桥式方案。由于上承式拱桥刚度大、行车条件优良,采用转体施工,施工期间对高速公路行车影响小,因此确定采用上承式拱桥方案。上承式拱桥结构可采用拱梁分离体系与拱梁固结体系,对2种结构体系的成桥过程及结构受力进行分析,分析结果表明:拱梁固结体系构造相对复杂,但结构受力更合理,施工更方便,优势较明显,因此该工程上承式拱桥确定采用拱梁固结体系。Shanghai-Hangzhou Passenger Dedicated Railway is an important component part of Shanghai-Kunming Passenger Dedicated Railway.At the skew of Shanghai-Hangzhou Expressway,the Shanghai-Hangzhou Passenger Dedicated Railway will span the expressway by way of a bridge.A summarized account of the comparison and selection of bridge type options for the Railway and the study of structural systems of the options is presented.In the conceptual design stage,4 bridge type options of deck arch bridge,continuous rigid-frame bridge,continuous girder and arch bridge and V-shape rigid frame bridge are considered and the option of the deck arch bridge is selected because the rigidity of the bridge is great,the riding conditions are good,the bridge can be erected by the rotation method and the interference of construction of the bridge to the expressway will be little.For the selected bridge,the structure can be designed as both the separation system and rigid fixity system of girder and arch.The completion process and force conditions of the two kinds of the systems are analyzed and the results of the analysis show that though the rigid fixity system of the girder and arch is relatively complicated,the force conditions of the system is more rational,the construction is more convenient,the advantages of the system are obvious and it is thus determined that the system will be used for the bridge to span the expressway.

关 键 词：客运专线 上承式桥 拱桥 方案比较 拱梁固结 结构分析 

分 类 号：U442.54[建筑科学—桥梁与隧道工程]