摘要
预应力曲线连续箱梁桥支座径向反力关乎桥梁结构安全性和功能性,但其影响因素较多,计算比较繁琐,设计人员往往无暇深究。以某高速公路互通区3座不同形式的预应力曲线连续箱梁匝道桥为例,运用Midas Civil建立计算模型,对影响预应力曲线连续箱梁桥支座径向反力的各种荷载进行独立分析,得出预应力荷载和结构整体温度荷载,是预应力曲线连续箱梁桥支座径向反力大小主要影响因素的结论。最后对如何防止预应力曲线连续箱梁桥发生支座病害提出设计建议。
Radial reaction force of prestressed curved continuous box girder bridge support is closely related with bridge structure safety and functionality,however,its influence factor is various,so the calculation is more tedious,and the designer often does not have the time to delve deeply.In this paper,three different forms of prestressed curved continuous box girder ramp bridge of a expressway interchange area are set as the example,and the establishment of a computational model is completed by using＂midas civil＂,so as to conduct an independent analysis of various loads which have an influence on radial reaction force of prestressed curved continuous box girder Bridge bearing. Hence,a conclusion is made as： The prestressing load and integral temperature load of structure are the main influencing factors for radial reaction force of prestressed curved continuous box girder bridge bearing.At the end,a design suggestion is put out for prevention of pedestal disease of prestressed curved continuous box girder bridge.
作者
董涛
曹阳
万善强
DONG Tao;CAO Yang;WAN Shanqiang(Hubei Urban Construction Design Institute Co. , Ltd, Wuhan 430051 ,China)
出处
《交通科技与经济》
2018年第3期72-75,共4页
Technology & Economy in Areas of Communications
关键词
预应力曲线连续箱梁桥
支座径向反力
主要影响因素
prestressed curved continuous box girder bridge
support radial reaction
main influencing factors
