摘要
拱桥在自重及活荷载作用下拱脚会产生较大水平推力,如何控制或减小拱脚水平推力的影响,一直是设计与施工的关键环节,特别是对于多跨连拱桥而言。结合钟祥市东环路跨湖桥(33孔不等跨连拱桥),详细介绍了该桥设计中制动墩设置、恒荷载调整、矢跨比优化,施工中预拱度设置、施工阶段划分等关键技术,为多跨连拱桥设计与施工提供技术参考。
Great level of horizontal thrust will generate on the stringer of arch bridge,under its own weight and live load.How to control and reduce the impact of horizontal thrust during the design and construction stage has been the key technology,especially for multi-span arch bridge.Based on Donghuan Road Bridge of Zhongxiang(a 33 spans arch bridge),detailed analysis was done in this paper,for example,during the design stage:the design of braking pier,the adjustment of dead load,the optimization of rise span ratio;during the construction stage:the set of camber,the division of construction stage and other key technologies.The purpose is to provide technical reference for multi-span arch bridge in design and construction stage.
出处
《施工技术》
CAS
北大核心
2014年第S1期273-276,共4页
Construction Technology
关键词
拱桥
水平推力
抗推制动墩
设计施工阶段
arch bridge
horizontal thrust
anti-push braking pier
design and construction stage
