曲线梁桥墩梁固结下悬臂横隔梁计算分析
Analysis on Calculation of Crossbeam on Pier-Girder Consolidation of Curved Box Girder
李天忍1
作者信息
- 1. 中铁第四勘察设计院集团有限公司厦门分院,福建 厦门 361010
- 折叠
摘要
横梁在增强桥梁的结构整体性、加强主梁之间的横向联系、改善荷载横向分配等方面发挥着重要作用.针对曲线箱梁在自重和外荷载作用下"弯扭耦合"现象明显的问题,文中提出一种考虑横梁作为主要受力构件的曲线箱梁墩梁固结横梁计算分析方法.以厦门快速公交系统(Bus Rapid Transit)BRT首末站匝道桥为工程背景,采用梁格法建立全桥空间有限元模型,两种横梁有限元模型,对曲线桥梁墩梁固结处横梁进行比较分析.结果表明,两种横梁模型受力性能相似,但根据不考虑顶底板参与受力的横梁模型计算结果配筋偏于安全.
Abstract
Under the gravity and external load,the bend-twist effect of The box girder is obvious.In curved bridges the crossbeam plays an important role in strengthening the structure as a whole enhancing the horizontal connection among the main beams and improving the horizontal distribution of the load.So crossbeam must be paid more attention as primary member.In this paper,as the background of Xiamen BRT bridge,using the static models of different crossbeam systems,to research the crossbeam 0n pier-girder consolidation of curved box girder.And the re-sults show that force conditions of the two systems are close,but Reinforcement according to the calculation results of the beam model without considering the force of the top and bottom plates,the reinforcement is safe.
关键词
墩梁固结/曲线箱梁/横隔梁/有限元Key words
Pier-girder consolidation/Curved box girder/Cross diaphragm/Finite element引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据