摘要
武汉至十堰铁路崔家营汉江特大桥采用连续刚构拱桥跨越通航水域,孔跨布置为(135+2×300+135) m,边跨与中跨梁部均设置钢管混凝土拱,为四联拱结构。收缩徐变和温度荷载对该桥受力影响很大,尤其是边主墩。本文介绍了该桥的设计情况,通过对顶推力、边跨压重、合龙温度的分析比较,解决了本桥设计的关键问题,使得边主墩受力合理,整个桥梁结构处于合理成桥状态。
Cuijiaying Hanjiang large span bridge on Wuhan-Shiyan railway adopts continuous rigid frame arch bridge to span navigable waters with spans of (135+2×300+135) m and concrete-f illed steel tube arch is installed in both side span and midpan beams,which is a quadruple arch structure.Shrinkage creep and temperature load have great inf luence on the stress of the bridge,especially on the side main pier.The design of the bridge was introduced in this paper.The key problems in the design of the bridge are solved by analyzing and comparing the pushing force,side span pressure and closure temperature,so that the stress of the side main pier is reasonable and the whole bridge structure is in a reasonable state of completion.
作者
李喜平
LI Xiping(China Railway Siyuan Survey and Design Group Co. Ltd. ,Wuhan Hubei 430063,China;China Railway Construction Bridge Design and Research Branch,Wuhan Hubei 430063,China)
出处
《铁道建筑》
北大核心
2019年第5期27-30,共4页
Railway Engineering
基金
中国铁路总公司科技研究开发计划(2017G006-O)
中铁第四勘察设计院集团有限公司科研课题(2017K005)
关键词
铁路桥梁
连续刚构拱桥
结构设计
顶推
压重
合龙温度
Railway bridge
Continuous rigid frame arch bridge
Structure design
Pushing
Pressure weight
Closure temperature
