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在表面爆炸负荷下对土壤道相互作用的数值研究,与基于回归的能量相关性

Abdullah H Alsabhan¹, Ibraheem Rais², Junaid Ahemad Khan²

¹Department of Civil Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia.

Scientific reports

|March 10, 2026

概括

这项研究以数值方式模拟了沙粘土中的地下地铁道上的表面爆炸冲击. 浅道遭受的损害更大,为保护性结构提供安全埋葬深度标准.

科学领域:

地质技术工程地质技术工程
爆炸工程爆炸工程
计算力学计算力学计算力学

背景情况:

越来越多地利用地下城市空间进行运输和保护,需要了解爆炸反应.
准确评估地下道对表面爆炸的脆弱性,对于冲突期间的安全至关重要.

研究的目的:

为了数值地研究一个圆形地铁道的响应在沙土表面的爆炸负荷.
分析土壤,层,强化和冲击波之间的合相互作用.
为安全的道埋葬深度制定性能标准.

主要方法:

一个3D数值模型,使用莫尔-库伦塑性用于土壤和混凝土损坏的塑性/约翰逊-库克用于层/钢筋.
通过CONWEP配方应用爆破压力.
根据分析预测,经验数据和实验结果进行验证.

主要成果:

模拟框架显示了与验证数据的可接受偏差.
重新校准的石坑大小公式用于沙土.
一个基于能源的框架阐明了爆炸能量传输和消散.
浅道 (9-15米超负荷) 呈现出更大的变形和拉伸损伤,随着电荷大小的增加.

结论:

数字模拟提供了关于爆炸对地下道的影响有价值的见解.
既定的性能标准和能量-变形关系有助于确定安全的埋葬深度.
这些发现对于设计保护地下结构免受地表爆炸的设计至关重要.

关键词:

粘土土壤是一种粘土土壤.有限元素方法有限元素方法.土壤道的相互作用.表面爆破是指对表面进行爆破.压力损伤是一种损伤.道的外层是道的外层.

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