华中科技大学学报：自然科学版2012，Vol.40Issue(1)：67-71,5.
混合梁斜拉桥钢混结合段试验与传力机理研究
Model test and transfer mechanism of steel-concrete composite structure for hybrid girder cable-stayed bridges
摘要
Abstract
The Wuhan Erqi Changjiang River Bridge is a hybrid girder cable-stayed bridge with three pylons. In order to test and verify its rationality of the connections construction of the main beam steel-concrete composite structure, a scale model of the main beam steel-concrete composite structure was designed for static experiments. In the model, the ratio of the scale model to the original structure was 1 ： 3. The model test was used to check the normal stress distribution and the bearing capacity of the main beam steel-concrete composite structure under the normal service load, design ultimate load and 1.7 times design ultimate load. It is assumed that there are two difference connection ways between the steel plate and the concrete box girder of the steel-concrete composite structure. Then two difference finite element models were established, and two difference force transmission between the steel plate and the concrete box girder of the steel-concrete composite structure were investigated. Through the comparison between the static experiment measuring result and the finite element calculating result, the conclusions were obtained as follows, the bearing capacity of the main beam steelconcrete composite structure of Wuhan Erqi Changjiang River Bridge can meet the requirements for the design and it can be seen that the shear stiffness of the shear studs has great influence on the force bearing and transfer mechanism of the steel-concrete composite structure.关键词
混合梁斜拉桥/主梁钢混结合段/模型试验/应力分布/承载性能/传力机理/剪切刚度Key words
hybrid girder cable-stayed bridges/main beam steel-concrete eomposite/model test/stress distribution/bearing capacity/transfer mechanism/shear stiffness分类
土木建筑引用本文复制引用
黄彩萍,张仲先,陈开利..混合梁斜拉桥钢混结合段试验与传力机理研究[J].华中科技大学学报：自然科学版,2012,40(1):67-71,5.基金项目
国家自然科学基金资助项目 （）
