摘要
曲线连续刚构桥除了主梁要设置预拱度之外,主墩也需要设置类似的横向预偏量.通过分析高墩大跨度预应力混凝土曲线连续刚构桥施工过程中的空间变形特点,探讨施工阶段中各工况对主墩横向变形带来的影响.以某工程实例为背景,建立三维有限元模型计算分析曲线连续刚构桥在施工阶段过程中产生的横向位移,在原有设计的基础上,为桥墩设置正确的横向预偏量提供科学数据,为此类桥梁的设计、施工以及监控等提供参考.
Except the set of pre-camber,the main piers of curved prestressed continuous concrete rigid frame bridge also has the pre-camber.Based on analyzing the characteristics of spatial de-formation of the curved prestressed continuous concrete rigid frame bridge with high piers and long-span,to make an analysis of the effects on the deformation of main pier which are caused by all kinds of the working conditions in the construction stages.Through a real engineering proj ect, build a three-dimensional finite element model to calculate and analyze the lateral displacement of curved prestressed concrete rigid frame bridge in the construction stage.The study may provide scientific evidence for the set of pre-camber of main piers and some suggestions for design,con-struction and monitor.
出处
《兰州交通大学学报》
CAS
2014年第1期119-123,共5页
Journal of Lanzhou Jiaotong University
关键词
曲线连续刚构桥
横向预偏量
主墩横向位移
curved continuous concrete rigid frame bridge
transverse pre-camber
lateral displace-ment of main pier
