上承式拱桥横向连接对结构受力的影响  

Influence of Deck Arch Bridge Transverse Connection on Mechanical Performance of Structure

作　　者：黄硕 陈唐兵 侯鹏媛 

机构地区：[1]青海大学土木工程学院,西宁810016

出　　处：《价值工程》2018年第6期127-129,共3页Value Engineering

基　　金：青海大学中青年基金项目(2015-QGY-3)

摘　　要：为了探究不同横向连接方式对上承式混凝土拱桥结构受力的影响,利用Midas/Civil有限元软件的梁格法对滨湖大桥进行了建模分析,通过变换不同的横向连接方式和横梁刚度分析了主拱受力的变化,结果表明:采用梁格法建模,能够考虑到受力的整体性,更接近实际情况;拱桥的横向连接刚度决定了荷载横向分布的规律,横向连接的刚度越大,荷载横向传递作用程度越大,各片拱肋所承担的荷载也越平均;横梁刚度由其截面惯性矩和材料决定,在变换横梁刚度时,可通过这些因素实现调整。In order to explore the influence of different transverse connection modes on the Mechanical Performance of deck reinforced concrete arch bridge, the modeling of the Lakeside bridge was conducted by using grillage analytical method of Midas/Civil finite element software. The Mechanical Performance of main arch was studied by changing the different transverse connections and the rigidity of the beam.The results show that the integrity of the force could be taken into account by using the grillage analytical method, which was closer to the actual situation; The transverse rigidity of the structure determines the law of its lateral load distribution, the greater the lateral contact rigidity,the more obvious the effect of lateral load transfer, and the more uniform the load of the main beam. The rigidity of the beam was determined by its moment of inertia and material. When the rigidity of the beam was changed, it could be adjusted by these factors.

关 键 词：上承式钢筋混凝土拱桥 梁格法 荷载横向分布系数 横梁刚度 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]