在双电荷爆炸负荷下,埋藏的X70钢管与螺栓边缘连接的动态曲反应
Yandong Qu1, Ruixue Zhang2, Jinda Wu2
1College of Civil Engineering, Dalian Minzu University, Dalian 116650, China.
Heliyon
|March 12, 2024
概括
在双重爆炸负载下研究X70钢管的动态曲,发现螺栓边连接 (BFC) 增强了防爆能力. 增加直径与厚度的比率和内部压力也提高了管道对爆炸效应的抵抗力.
科学领域:
- 工程机械 工程机械 工程机械
- 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:
- 在爆破负载下管道的动态反应对于操作完整性和维修至关重要.
- 在多个爆炸场景下,管道动态曲的研究有限.
研究的目的:
- 为了研究X70钢管与螺栓连接 (BFC) 在双电荷爆炸负载下的动态曲反应.
- 分析各种因素对管道防爆性能的影响.
主要方法:
- 建立管道-土壤合的3D模型.
- 模拟双电荷爆炸负荷 (表面和地下).
- 对爆炸模式,内部压力,电荷质量比,直径与厚度比 (D/t) 的参数研究.
主要成果:
- 表面和地下电荷的同时引爆导致非加压管道的变形更大,而不是单次电荷爆炸.
- 更高的D/t比率提高了BFC管道的防爆性能.
- 适当的内部压力有效地减轻了曲变形.
- 与直管相比,BFC系统表现出优越的局部刚性和能量吸收,减少曲.
结论:
- 螺栓边缘连接显著提高X70钢管的抗爆性能.
- 内部压力和直径与厚度的比率是改善爆炸下管道生存能力的关键参数.
- 该研究为设计和评估受爆炸威胁的管道提供了宝贵的见解.
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