关于预制组装装在道中的覆盖支器的机械性能研究
Zhi Lin1, Wanlin Feng1, Xiang Chen1
1College of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.
Scientific reports
|October 25, 2024
概括
预制组装的覆盖门可以提高山区的道建设质量和速度. 它们的机械性能受异常距离和螺栓预装的影响,在负载下显示出可预测的关节行为.
科学领域:
- 土木工程 土木工程是指土木工程.
- 地质技术工程 地质技术工程
- 道工程 道工程是指道工程.
背景情况:
- 在道中传统的造在位覆盖形增强在山区面临着挑战.
- 预制组装方法为快速建造和提高质量提供了潜力.
研究的目的:
- 为了研究预制装配的道层中覆盖门的机械性能.
- 分析异常距离,负载和螺栓预负载对关节行为和应力分布的影响.
主要方法:
- 进行了模型测试,以模拟道条件.
- 使用数值模拟来分析机械反应.
- 研究的关键参数包括关节的开放,折曲和应力度.
主要成果:
- 随着离心距离和施加的负载,关节的开放和偏斜增加,显示出线性关系.
- 峰值应力发生在+0.2m的离心距离的关节外侧,应力集中在螺栓孔.
- 螺栓预加载可以提高关节的应力性能,并且层/土壤的刚性显著影响盖面的机械响应.
结论:
- 预制组装的覆盖门为在具有挑战性的地形中加强道提供了可行的解决方案.
- 了解偏心距离和螺栓预加载的影响对于优化设计和性能至关重要.
- 层和土壤刚度是道覆盖门整体机械行为的关键因素.
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