基于目前沥青路面结构设计和应用发展的需要,采用1/4车辆简谐振动模型,运用三维动力有限元的基本方法,结合有限元分析软件ANSYS分析车辆移动荷载作用下的沥青路面时程响应,得到动态响应的规律和特性,比较车速对各力学指标的影响规律。结果表明:移动荷载作用下的路面结构动力响应呈波动和正、负交替变换的特性;沥青面层结构主要处于3向受压状态;各指标动力响应规律发生变化的拐点速度不同。
Research of the interaction system between the vehicle and pavement on the highway is an important subject in the field of road. Based on the need of asphalt pavement structure design and its application together with development, the time - history responses of asphalt pavement under moving load were evaluated through ANSYS software applying the quarter vehicle harmonic vibration model and the fundamental theory of three - dimensional dynamic finite element, from which the laws and characteristic of dynamic responses were derived, and the influence rule of corresponding mechanical parameters was analyzed with various speed.