摘要
讨论了Y形支撑连续刚构桥合龙顶推力的设计与计算。在确定墩顶顶推水平位移时,不仅考虑了合龙温差引起的位移,而且还计入了混凝土收缩徐变的影响。以某三跨Y形支撑混凝土连续刚构桥工程项目为实例,运用有限元结构分析方法,比较计算了该桥在不同合龙温度和合龙顺序的情况下的水平顶推力;最后,对各工况的成桥内力和位移状态进行进一步的分析比较,为项目的合龙施工提供了参考。
The calculating of closure jacking force for Y-shaped pier rigid frame bridge is studied.The horizontal jacking displacement at pier top which caused by the difference of closure temperature as well as the shrinkage and creep of concrete is calculated.Taking a three-span Y-shaped pier continuous rigid frame bridge as a engineering example,and using finite element structural analysis method,the closure jacking force is calculated under the cases of the difference of closure temperatures and orders.Finally,the results of internal force and displacement are analyzed comparatively,so that it can be referred by the practical construction work.
出处
《安徽建筑工业学院学报（自然科学版）》
2010年第2期57-61,共5页
Journal of Anhui Institute of Architecture(Natural Science)
关键词
桥梁工程
Y形支撑
刚构桥
合龙
顶推力
bridge engineering Y-shaped pier rigid frame bridge closure jacking force
