大跨度桥梁钢-混叠合梁的弯曲波传播特性  

Propagation Characteristics of Bending Waves in Steel-Concrete Composite Beams of Long-Span Bridges

作　　者：黄继荣 马牛静[2] 王荣辉[2] 朴泷[2] HUANG Ji-rong;MA Niu-jing;WANG Rong-hui;PIAO Long(Guangzhou Traffic Project Management Center of Central District,Guangzhou 510000,China;School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]广州市中心区交通项目管理中心,广州510000 [2]华南理工大学土木与交通学院,广州510640

出　　处：《工程建设与设计》2021年第19期57-60,63,共5页Construction & Design for Engineering

基　　金：国家自然科学基金项目(51878295);广州市珠江科技新星项目(201906010009);华南理工大学中央高校基本科研业务费资助项目(2019MS118)。

摘　　要：针对工程中广泛应用的大跨度叠合梁,分析车辆冲击荷载作用下的弯曲波传播情况。考虑桥面板与钢梁的耦合效应,利用Timoshenko梁理论分析叠合梁的弯曲波,对弯曲波的弥散关系进行讨论,并对弯曲波在任意位置的传递路径进行分析。通过工程案例,对叠合梁在冲击荷载作用下的弯曲波传播规律进行研究,得到一些实用性结论,可供桥梁工程结构分析参考。For the widely used long-span composite beam,the bending wave propagation under vehicle impact load is analyzed.Considering the coupling effect between bridge deck and steel beam,the bending wave of composite beam is analyzed by using Timoshenko beam theory,the dispersion relation of bending wave is discussed,and the transmission path of bending wave at any position is analyzed.Through an engineering case,the bending wave propagation law of composite beam under impact load is analyzed,and some practical conclusions are obtained,which can be used as a reference for engineering structure analysis.

关 键 词：叠合梁 弯曲波 传播特性 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.34[交通运输工程—道路与铁道工程]