在灵活的岩石落山障碍物中预测支绳的拉力方法,基于全面实验和数值分析
Xin Qi1, Lei Zhao2, Qing-Cheng Meng3
1School of Civil Engineering, Southwest Jiaotong University, Chengdu, China.
Scientific reports
|May 1, 2024
概括
这项研究提出了一种新方法,用于预测柔性岩障碍支绳的张力. 该方法考虑了冲击能量和距离,显示了沿绳索的力量减少.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
- 减轻灾害灾害的减缓
背景情况:
- 灵活的落石障碍物对于减轻山体滑坡危险至关重要.
- 了解冲击下的支绳的拉力行为对于屏障设计至关重要.
- 现有的模型可能无法完全捕捉支绳沿线的动态张力分布.
研究的目的:
- 开发一种预测方法,用于灵活的岩石崩障碍物支绳的张力.
- 要量化沿着支绳的拉力减弱.
- 为工程师提供一个工具来优化屏障设计.
主要方法:
- 进行了两次全尺寸模型测试 (3000kJ冲击能量).
- 开发和分析了36个不同长度和冲击能量的数值模型.
- 定义并计算了支绳的拉力衰减系数.
- 应用最小平方法来建立一个预测模型.
主要成果:
- 紧张力从撞击点到绳子末端显著下降,遵循高斯分布.
- 上部支绳的平均拉力减弱系数约为0.7.
- 下支绳的平均拉力减弱系数大约为0.8.
- 开发的预测方法准确地基于传播距离和冲击能量的绳索拉伸行为模型.
结论:
- 拟议的预测方法有效地估计了灵活的岩石落山障碍物中支绳的张力.
- 定义的拉力减弱系数提供了对力分布的定量见解.
- 这项研究有助于改善岩石落保护系统的设计和可靠性.
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