德日中三国规范关于梁端竖向折角限值的对比  

Comparison of Germany,Japan and China Specifications of Limit Value Standards of Vertical Rotation Angles at Beam Ends of Railway Bridges

作　　者：李永乐[1] 李鑫[1] 高芒芒[2] 何庭国[1,3] 

机构地区：[1]西南交通大学桥梁工程系,四川成都610031 [2]中国铁道科学研究院研发中心,北京100081 [3]中铁二院工程集团有限责任公司土建一院,四川成都610031

出　　处：《铁道学报》2013年第4期84-89,共6页Journal of the China Railway Society

基　　金：国家自然科学基金(50508036);国家科技支撑计划课题(2012BAG05B02);中央高校基本科研业务费专项资金(SWJTU11CX008;SWJTU11CX127)

摘　　要：梁端竖向折角是桥梁设计的控制性因素,合理确定其限值标准对结构安全和车辆走行性非常重要。本文介绍德、日、中三国铁路桥梁规范梁端竖向折角限值的相关规定,分析三国规范相关标准的取值依据,对比相同荷载条件下三国规范取值的差异,提出中国现有规范有待完善,讨论大跨度桥梁梁端竖向折角的特殊性。研究结果对轨道交通桥梁设计具有一定参考价值。The issue of vertical rotation angles at beam ends is the control factor in bridge design,so rational determination of their limit value standard is critical to structural safety and vehicle running performance. In this paper, the limit value standards of vertical rotation angles at beam ends specified in the relevant codes of Germany,Japan and China were introduced. The basis to set the limit value standards in the three national codes was explored respectively and their differences were compared on condition of the same live load. It was pointed out that the provisions of the existing China code needed to be further improved. The speciality of the vertical rotation angles at beam ends of large-span bridges were discussed. The research results have guiding significance for design of rail bridges.

关 键 词：铁路桥梁 梁端竖向折角 限值标准 轨道稳定性 车辆安全性 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]