摘要
依托工程实例,建立匝道车-桥耦合系统振动分析的数值仿真模型。利用大型通用软件ANSYS建立桥梁的动力模型,进行匝道的结构动力特性分析。通过对作用于匝道的车辆荷载进行具体分析,并依据车-桥耦合振动理论建立三维车桥计算模型,考虑双轴车辆的轴距、行车速度、车-桥质量比对桥梁振动响应的影响,针对不同车型、不同的自振频率,导致不同的激励频率。分析表明:采用双轴车辆模型研究车-桥耦合系统的振动更安全、可靠,能真实、有效地分析车耦桥合系统间的振动,反映耦合系统振动的实际情况,揭示车-桥耦合系统振动的实质。
Based on project, set up the numerical simulation model of coupling vibration analysis of ramp vehicle-bridge system. Using the large general software ANSYS to establish the dynamic model of the bridge, analyze the dynamic characteristics of ramp structure. Through the specific analysis of the vehicle load acting on ramp, set up three-dimensional calculation model of vehicle-bridge coupling vibration, considering the influence of biaxial vehicles wheelbase, driving speed,quality ratio of the vehicle and bridge on the bridge vibration response, and according to different models having different natural frequencies, it will lead to different excitation frequency. The above analysis shows that adopting biaxial vehicle model to study the vibration of vehicle-bridge is more safely and more reliably. It can reflect the actual situation of coupling vibration system,and reveal the essence of the vibration of vehicle-bridge coupling system.
出处
《工程建设与设计》
2018年第1期91-94,共4页
Construction & Design for Engineering
基金
国家自然科学青年基金项目(51408339)
山东省住房城乡建设科技计划项目(2017-K2-003)
山东省高校科技计划项目(ZG05)
关键词
匝道
车-桥耦合振动
结构动力特性分析
响应分析
ramp
vehicle-bridge coupled vibration
structure dynamic characteristics analysis
response analysis
