铁道科学与工程学报2017，Vol.14Issue(7)：1465-1472,8.
三塔四跨单索面大翼缘矮塔斜拉桥塔墩梁固结区域局部应力分析
Analysis on stress of pylon-pier-girder rigid region of four-span extradosed cable-stayed bridge with three pylons, single cable plane and long flange
摘要
Abstract
The pylon-pier-girder rigid region is the key component for the long span extradosed cable-stayed bridge due to its complicated configuration and stress states. With engineering background of an extradosed cable-stayed bridge in 104 national road of which the span arrangement is (140+2×225+120) m, the local stress of the pylon-pier-girder rigid region was analyzed and the stress distributions under three typical cases were obtained by using the finite element analysis software ANSYS. The results verify the safety and the reasonableness of the design. Further, some improvement measures were proposed for solving the serious problem of the tensile stress concentration in the end of long flange, which can give significant references for the design and construction of extradosed cable-stayed bridges of similar features.关键词
矮塔斜拉桥/塔墩梁固结/局部应力/大翼缘Key words
extradosed cable-stayed bridge/the pylon-pier-girder rigid region/local stress/long flange分类
交通工程引用本文复制引用
彭定成,杨孟刚,孟栋梁..三塔四跨单索面大翼缘矮塔斜拉桥塔墩梁固结区域局部应力分析[J].铁道科学与工程学报,2017,14(7):1465-1472,8.基金项目
国家自然科学基金资助项目(51378504) （51378504）
