独柱支承曲线连续梁桥预偏心距设计  

Pre-Eccentric Distances Design of Curved Continuous Girder Bridges with Single-Column Supports

作　　者：霍志芳[1] 

机构地区：[1]中交公路规划设计院有限公司,北京市100010

出　　处：《公路》2007年第7期24-30,共7页Highway

摘　　要：针对独柱支承连续曲线梁桥的预偏心距设计存在的问题,采用数值模拟方法分别对不同曲率半径的独柱支承曲线连续梁桥的中支点合理预偏心距设置问题进行了研究。独柱支承曲线连续梁桥中支点预偏心距的设计不仅要考虑主梁扭矩的分布,同时还要考虑主梁的扭转角位移、主梁端部支承反力是否受拉等因素。不同曲率半径的独柱支承曲线连续梁桥的中支点预偏心距确定时,所考虑因素的侧重点也不相同。According to the shortcomings in the pre-eccentric distance design of curved continuous girder bridges with single-column supports, a curved continuous girder bridge of varies radius with singlecolumn supports is analyzed by FEM. Appropriate pre-eccentric supports distances for the curved continuous girder bridges with varies radius are studied in this paper. Not only the torque distribute of curved girder is taken into account in the design of curved continuous girder bridges with single-column supports, but also the rotation angles displacement of main girder and the reaction of main girder end bearing should be considered. The important factors which are taken into account in the design of curved continuous girder bridges with single-column supports are not same for varies radius.

关 键 词：曲线箱梁桥 独柱支承 偏心距 平衡设计 

分 类 号：U448.42[建筑科学—桥梁与隧道工程]