半穿式钢桁架连续梁桥各向振动响应分析

摘要

随着钢桁架桥的普及,这类桥梁的各向振动响应逐渐成为了设计人员关心重视的问题.以上莘大桥为工程背景,选取桥梁振动响应较为明显的位置进行响应分析,依次评判行车过程中桥梁结构的振动状况及性能,就半穿式双曲弦杆钢桁架连续梁桥的动力响应特点,提出桥梁运营中相应的监测重点.%With the popularization of steel truss bridge, the vibration response in every direction of such a kind of bridge gradually becomes an issue that design personnel pay much attention to.Taking Shangxin Bridge as the engineering background, the response analysis on the position with more obvious bridge vibration response is made.The vibration status and performance of bridge structure during the procedure of vehicle driving are judged in turn, and corresponding monitoring emphasis during the procedure of bridge operation is put forward according to the dynamic response features of half across steel truss continuous girder bridge with hyperbolic chord member.