材料和结构的综合设计,用于灵活的基础青路面
Bin Huang1,2,3,4, Qinxue Pan1,2,3, Xiaolong Chen1,2,3
1School of Transportation, Changsha University of Science and Technology, Changsha 410114, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
本研究介绍了青路面设计的双模块理论,将材料特性与结构性能联系起来. 优化的设计改善了应力分布,并延长了路面的使用寿命.
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:
- 目前的青路面设计方法缺乏与材料性能的定量联系,并忽略拉伸压缩差异,导致分析错误.
- 现有的模型往往无法准确预测路面性能,原因是材料行为假设的简化.
研究的目的:
- 使用双模块理论,开发一套集成的材料结构设计方法,用于灵活的基础青路面.
- 在各种配置下数值分析路面结构反应和疲劳寿命.
- 根据机械参数建模来确定最佳层混合.
主要方法:
- 采用双模块理论进行灵活基础青路面的数值分析.
- 研究了层厚度和模块对结构反应和疲劳寿命的影响.
- 建模机械参数以优化层混合,以实现集成设计.
主要成果:
- 发现结构反应和疲劳寿命随着路面厚度和模量而非线性变化.
- 材料模量比厚度有更大的影响,拉伸模量效应比压缩效应更明显.
- 表面横向应变对厚度和模量表现出最高的灵敏度.
结论:
- 在上层,下层和底层 (1.5,2.0和1.2分别) 推的压力-拉力模量比.
- 综合设计方法实现了优越的应力分布,并大大延长了路面的使用寿命.
- 这种方法通过考虑材料的行为,可以产生更现实的路面设计寿命.
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