轮胎荷载作用下钢-混组合桥面铺装系统的力学响应研究  

Research on the Mechanical Response of Steel-concrete Composite Bridge Deck Pavement System under Tire Load

作　　者：宋晓雷 Song Xiaolei(Shanxi Transportation Planning Survey and Design Institute Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,太原市030032

出　　处：《北方交通》2024年第8期5-8,共4页Northern Communications

摘　　要：为研究车辆荷载作用下钢-混组合桥面铺装层的动态响应,运用有限元软件建立轮胎模型。选取当前工程推广应用的钢-混组合桥为研究对象,分析双轴双轮作用下钢-混组合桥面铺装层结构的动力响应。结果表明:在满载状态下,其竖向位移增加幅度较小,超载使铺装层表面竖向位移明显增大,而竖向最大位移并非呈线性增加。不同轮胎荷载作用下,铺装层压应变曲线变化趋势相近,且随着轴载的增加,压应变逐渐增大。铺装层间剪切破坏主要发生在钢板与铺装层之间。铺装层只在轮胎荷载附近产生较大的应变云图,然后逐渐向两侧衰减。随着负载增加,应变值也逐渐增大。In order to study the dynamic response of the steel-concrete composite bridge deck pavement layer under vehicle load,the tire model is established by utilizing the finite element software.Taking the steel-concrete composite bridge that is widely applied in the current project as the research object,the dynamic response of the steel-concrete composite bridge deck pavement layer structure under the action of biax and double wheel is analyzed.The results show that:the vertical displacement increases slightly under full load,and the vertical displacement of the pavement layer surface increases significantly due to overload,while the maximum vertical displacement does not increase linearly.Under different tire loads,the change trend of pavement layer compressive-strain curves is similar,and the compressive-strain gradually increases with the increase of axle load.The pavement interlayer shear failure mainly occurs between the steel plate and the pavement layer.The pavement layer produces the large strain cloud chart only in the vicinity of the tire load,and then gradually decays to both sides.As the load increases,the strain value also increases gradually.

关 键 词：钢-混组合桥面 轮胎模型 耦合 动力响应 

分 类 号：U443.33[建筑科学—桥梁与隧道工程]