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Road Tanker Pavement Damage Potentials

机译：公路油轮路面损坏的可能性

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摘要

Dynamic loads derived from vehicle vibration accelerate pavement damage. While the primary cause for vehicle vibration is its dynamic response to pavement perturbations, there are another sources for vehicle vibration. In particular, the motion of the cargo on partially filled road tankers represents another causality for vehicle vibration that further affects the road damage potentials of such vehicles, which has not been addressed in the literature. In this paper, a simplified roll plane model is considered to analyse the road damage potentials of cargo sloshing when a road tanker travels along a winding road. Two inverted pendulums and one simple pendulum simulate the chassis-axle-cargo response to lateral perturbations. While the upper and lower pendulums simulate the roll responses of the chassis and axle, respectively, the simple pendulum, attached to the upper inverted pendulum, simulates the sloshing cargo. A validated formulation for the natural sloshing frequency is utilized to obtain the equivalent simple pendulum lengths for the two tank shapes and several fill levels considered. Results reveal that the effect of cargo sloshing can represent an increased road damage on the order of 20 percent as a function of fill level, tank shape and performance measure considered.
机译：车辆振动产生的动态载荷会加速路面损坏。虽然造成车辆振动的主要原因是其对路面扰动的动态响应，但还有其他造成车辆振动的原因。特别地，货物在部分装满的公路油轮上的运动代表了车辆振动的另一个因果关系，该因果关系进一步影响了这种车辆的道路损坏可能性，这在文献中没有解决。在本文中，考虑使用简化的侧倾飞机模型来分析公路油罐车在蜿蜒的道路上行驶时货物晃荡的道路损坏可能性。两个倒立摆和一个简单摆摆模拟了底盘车轴货物对横向扰动的响应。上摆和下摆分别模拟底盘和车轴的侧倾响应，而附在上倒立摆上的简单摆则模拟了晃动的货物。利用自然晃动频率的经过验证的公式来获得两种罐形以及考虑的几种填充水平的等效简单摆长。结果表明，随着液位，油箱形状和性能指标的变化，货物晃荡的影响可能会增加20％左右的道路损坏程度。

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