谈长大跨度铁路框构桥顶进施工线路加固技术

Discussion on the jacking construction line reinforcement technology of long and large span railway frame shaped culvert

结合工程实例,对工程特点和施工难点进行了分析和研究,经过受力分析和理论计算,制定和运用了框架桥顶进施工工便纵梁、横抬梁与钢枕组合线路加固技术,解决了对于长大跨度框架桥顶进施工时,D形便梁不能满足使用和吊轨加纵、横抬梁线路加固方式的刚度、强度较薄弱的问题。

Combined with engineering example,the engineering characteristics and construction difficult was analyzed and studied,after stress analysis and theoretical calculation,the frame shaped bridge jacking construction was established and utilized in longitudinal beam,cross beam and steel sleeper combined line reinforcement technology,which resolved D-typed beam unsatisfied utilization,hanger rail plus longitudinal and cross beam line reinforcement rigidity and strength weak problem in long and large span frame shaped bridge jacking construction.