| 喇世仁*,苏西洋,张兴义.混凝土路面摩擦特性实验及数值计算研究[J].实验力学,2023,38(4):467~472 |
| 混凝土路面摩擦特性实验及数值计算研究 |
| Concrete pavement friction characteristics experiment and numerical calculation research |
| 投稿时间：2022-09-07 修订日期：2022-10-01 |
| DOI：10.7520/1001-4888-22-221 |
| 中文关键词: 混凝土路面 不同温度 表面粗糙度 弹簧滑块模型 |
| 英文关键词:concrete pavement different temperatures surface roughness spring slider model |
| 基金项目:国家自然科学基金项目(11872196)；青海民族大学高层次人才(博士)项目(2021XJG14) |
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| 中文摘要: |
| 针对混凝土路面摩擦特性的测试需要，本文自行搭建不同路况混凝土路面摩擦特性测试装置，利用该装置对影响混凝土路面摩擦特性的关键因素如温度、粗糙度及砂粒粒径等进行实验分析，结果表明随着温度的升高，摩擦力逐渐增大，砂粒的粒径大小和粗糙度对混凝土路面摩擦性能影响显著。通过改进的弹簧-滑块模型对混凝土路面摩擦特性进行数值计算，计算结果与实验结果相吻合；对模型中影响混凝土摩擦的影响因素如模量和粗糙度进行研究，结果表明材料表面粗糙度及模量的改变会使混凝土路面的摩擦力曲线出现明显的黏滑效应。 |
| 英文摘要: |
| For the test needs of the friction characteristics of concrete pavement, this article built a test device for concrete road surface friction features at different road conditions, and used this device to experiment with key factors that affected the friction characteristics of concrete pavement, such as temperature, roughness, sand particle size, and positive pressure. As a result, it shows that the friction force increases with the increase in temperature, and the particle size and roughness of the sand particles have significant effects on the performance of the concrete pavement. Then calculating the friction characteristics of the concrete pavement with the improved spring-slide model, which is consistent with the experimental results, and studying the influencing factors that affect the concrete frictions, such as the amount and roughness. The change in quantity makes the friction curve of the concrete pavement significantly sticky. |
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