沥青路面振动压实过程动力学仿真分析  

Dynamic Simulation Analysis of Vibration-compacted Asphalt Pavement

作　　者：赵江 曾晟[2] 杨清华 梁乃兴[2] ZHAO Jiang;ZENG Sheng;YANG Qinghua;LIANG Naixing(Southwest Transportation Construction Group Co.,Ltd.,Kunming 650000;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074)

机构地区：[1]西南交通建设集团股份有限公司,昆明650000 [2]重庆交通大学土木工程学院,重庆400074

出　　处：《公路交通技术》2021年第3期8-12,22,共6页Technology of Highway and Transport

基　　金：云南省交通运输厅科技项目(2018(23))。

摘　　要：为了对沥青路面施工中振动压路机振动轮加速度变化规律进行研究,以“振动压实设备-沥青路面”二自由度动力学模型为基础,分别提出沥青路面振动压实过程接地振压工况和跳离地面跳振工况动力学方程,通过Matlab/Simulink软件对2种工况动力学方程进行仿真建模分析。仿真结果表明:接地振压工况下,当达到稳态振动时振动轮加速度随时间变化成正弦曲线变化;跳振工况下,振动轮加速度在跳离地面时振动加速度变化较小,当与地面接触时振动轮加速度出现突变。通过现场试验实测振动轮加速度随时间变化规律与仿真结果进行对比分析,结果表明:所建立的2种工况动力学模型仿真结果与现场实测结果具有较高的一致性,所建模型能够较好地表征沥青路面压实过程中振动压路机振动轮加速度随时间变化的规律。In order to study the accelerating-change law of the virbration wheel of vibratory roller in asphalt pavement construction,based on the two degree of freedom dynamic model of"vibratory compaction equipment-asphalt pavement",this paper puts forward the dynamic equations of ground vibration and jumping off the ground vibration in the process of vibratory compaction of asphalt pavement.Through Matlab/Simulink software,the dynamic equations of the two working conditions are simulated and analyzed.The simulating results show that under the condition of ground vibration and pressure,when the steady vibration is reached,the acceleration of the vibrating wheel changes in a sinusoidal curve with time.Under the condition of jump vibration,the acceleration of the vibrating wheel changes little when it jumps off the ground,and when it contacts with the ground,the acceleration of the vibrating wheel changes suddenly;The results show that the simulating results of the two working conditions are in good agreement with the field test results,and the established model can better characterize the variation law of vibratory roller acceleration with time in the compaction process of asphalt pavement.

关 键 词：道路工程 振动激励 接地振压 跳振工况 动力学模型 仿真分析 

分 类 号：U416.2[交通运输工程—道路与铁道工程]