Computer simulation for dynamic wheel loads of heavy vehicles
Computer simulation for dynamic wheel loads of heavy vehicles
复制标题
重型车辆动态轮载的计算机模拟
DOI：
10.12989/sem.2001.12.4.409
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发表时间：
2001
影响因子：
2.2
通讯作者：
Chul‐Woo Kim
中科院分区：
文献类型：
--
作者：
M. Kawatani;Chul‐Woo Kim
采用三维解析模型，研究了重型车辆在桥上和刚性路面上行驶时的动态轮载特性。通过与荷兰应用科学研究组织（TNO）道路车辆研究所的试验结果进行对比，验证了分析模型的有效性。本文还以日本大坂坂神高速公路梅田入口桥为例，将理论分析结果与试验结果进行了比较。分析和实验结果之间的协议是令人满意的，并鼓励在实践中使用的分析模型。参数研究表明，桥梁的动增量系数（DIF）和动轮载均方根值随车速、车型和路面不平度的变化而波动。此外，车辆的跳振与桥梁的响应以及车轮动荷载的均方根值与桥梁的动力增量系数（DIF）之间存在着很强的主频相似性。
The characteristics of dynamic wheel loads of heavy vehicles running on bridge and rigid surface are investigated by using three-dimensional analytical model. The simulated dynamic wheel loads of vehicles are compared with the experimental results carried out by Road-Vehicles Research Institute of Netherlands Organization for Applied Scientific Research (TNO) to verify the validity of the analytical model. Also another comparison of the analytical result with the experimental one for Umeda Entrance Bridge of Hanshin Expressway in Osaka, Japan, is presented in this study. The agreement between the analytical and experimental results is satisfactory and encouraging the use of the analytical model in practice. Parametric study shows that the dynamic increment factor (DIF) of the bridge and RMS values of dynamic wheel loads are fluctuated according to vehicle speeds and vehicle types as well as roadway roughness conditions. Moreover, there exist strong dominant frequency resemblance between bounce motion of vehicle and bridge response as well as those relations between RMS values of dynamic wheel loads and dynamic increment factor (DIF) of bridges.