湖南大学学报（自然科学版）Issue(1)：27-32,6.
槽型断面梁斜拉桥塔梁墩固结区受力特性研究
Stress Analysis of Pier-tower-girder Fixed Region of Cable-stayed Bridge with Trough Girder
摘要
Abstract
In order to increase the structural longitudinal stiffness and facilitate the swing method,the side girders of trough section of the cable-stayed bridge on the Kunming-Shanghai passenger line were in-serted into the pylon so as to form the pier-tower-girder fixed region.For the (32+80+112)m single tower cable-stayed bridge,the structure and force of the fixed region are very complicated.The large gen-eral-purpose finite element software ANSYS was used to establish the pier-tower-girder fixed region model to study the stress distribution of the fixed region.The correctness of this model was verified.Based on this region model,the force transmission and stress distribution of the fixed region were investigated,and the effect of the local structural details on the fixed region stress was studied.The analysis results show that the global stress level of the fixed region is lower than the girder and tower,but there are stress con-centration phenomena in the fixed region,such as the intersection point between the floor of the trough girder and upper tower,and the corner of the human tunnel in the fixed region.The degree of the stress concentration was relieved significantly by improving the structural details.关键词
铁路桥梁/斜拉桥/局部分析/子模型法/槽型梁Key words
railway bridge/cable stayed bridge/region analysis/sub model/trough girder分类
交通工程引用本文复制引用
戴公连,粟淼,刘文硕,闫斌..槽型断面梁斜拉桥塔梁墩固结区受力特性研究[J].湖南大学学报（自然科学版）,2014,(1):27-32,6.基金项目
国家自然科学基金资助项目(51378503) （51378503）
铁道部科技研究开发课题(2010G018-A-3) （2010G018-A-3）
