基于平整度的CRCP冲断区域维修标准研究

Study on Maintenance Standard of CRCP in Punch-out Area Based on Roughness

为了获得连续配筋混凝土路面冲断区域维修标准,本文首先建立冲断区域人-车-路耦合振动模型,然后利用传递矩阵法结合Matlab软件对振动方程进行求解,以获得乘客加速度随时间的变化和最大瞬态振动值(MTVV)。研究发现:一定条件下车辆经过冲断区域时,其在做振幅减小的简谐振动;当车辆进入冲断区域0.22 s时乘客加速度最大,其值为1.57 m/s2。最后,考虑行车舒适性以最大瞬态振动值作为行驶舒适性评价指标,提出冲断区域维修标准的确定方法和步骤,并给出了相应算例。

In order to obtain the maintenance standard of CRCP in punch-out area, we established the punch- out area human-vehicle-road coupled vibration model at first, then we solved the vibration equation by using the transfer matrix method and Matlab software to obtain the passenger＇s acceleration varying with time and MTVV. The result indicates that （1） when vehicle passing the punch-out area under certain conditions, the vehicle is in the harmonic vibration ; the passenger＇s maximum acceleration is the largest （ 1.57 m/s^2 ） 0. 22 S after the vehicle passing the punch-out area. Finally, considering the driving comfort and taking the maximum transient vibration value as the driving comfort indicator, we put forward the method and steps of determining the maintenance standard of punch-out area and given the related calculation example.