中承式拱桥竖向有载频率研究  

Research on Vertical Loaded Frequency for Half-through Arch Bridge

作　　者：王英[1] 彭丽[1] WANG Ying;PENG Li(College of civil engineering,Shanghai Normal University, Shanghai 201418, China)

机构地区：[1]上海师范大学建筑工程学院

出　　处：《结构工程师》2019年第4期37-41,共5页Structural Engineers

基　　金：上海市自然科学基金项目(18ZR1427900)

摘　　要：为了研究中承式拱桥的自振特性及车-桥系统的有载频率,采用有限元方法建立了桥梁计算模型;根据现行规范的规定选取车辆荷载参数,建立了车-桥系统计算模型。通过软件计算分析,得到桥梁结构的振动模态,和不同车辆数目、不同车辆位置等多种工况条件下的有载频率。从而研究中承式拱桥有载频率的影响因素,为实际工程建设提供理论参考。In this paper,in order to analyze the natural vibration characteristics of half-through arch bridge and the loaded frequency of vehicle-bridge system,the authors established the bridge calculation model using finite element method.The vehicle-bridge system calculation model was built according to the vehicle load parameters from the current specifications.Both the vibration modals of the bridge and the loaded frequencies of the vehicle-bridge system under different working cases were obtained by software analyzing.As a result,the influence factors of the loaded frequency for this half-through bridge be extracted and discussed.This research provided reference material for real world engineering construction.

关 键 词：有载频率 车-桥系统 拱桥 有限 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]