一个有限元模型用于模拟透路面铺路面的应力反应
Jhu-Han Siao1, Tung-Chiung Chang2, Yu-Min Wang3
1Department of Civil Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan.
Materials (Basel, Switzerland)
|June 27, 2024
概括
使用3D有限元模型模拟透路面显示,较低的速度会增加压力,从而对性能产生负面影响. 增加层模块和30厘米的设计深度被推用于低速交通区域的透路面.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
背景情况:
- 透气路面提供环境效益,但结构强度有限,限制了它们的使用.
- 精确模拟应力参数对于扩大透路面的应用至关重要.
研究的目的:
- 开发和验证一个3D有限元模型,用于模拟通透路面的应力反应.
- 为了研究轮速对不同深度路面应力的影响.
主要方法:
- 使用ABAQUS/CAE 2021开发了一个3D有限元 (3D FE) 模型.
- 该模型使用53厘米的透气路面和315/80 R22.5轮进行校准和验证,通过t-test分析确认了准确性.
- 在轮速为11,15和22米/秒的情况下进行了模拟.
主要成果:
- 车轮转速在3厘米和8厘米深处显著影响了路面应力,在13厘米和33厘米深处的影响最小.
- 由于不同弹性模块,开放级青混凝土 (OGFC) 表面和多孔青混凝土 (PAC) 基层之间的应力反应有所不同.
- 较低的速度增加了应激反应和延长的动作时间,对路面性能产生了负面影响.
结论:
- 建议增加路面层的弹性模块,用于受低速度交通影响的透路面.
- 对于通透的道路路面,建议设计深度为30厘米,考虑到重载和轮速变化.
- 这些发现为设计耐气候和高性能透气路面提供了参考.
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