通过活性断层穿过道的ECC-RC复合材料支结构的脱位反应
Shunguo Wang1, Zude Ding2, Chenghua Shi3
1Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, 650500, China.
Scientific reports
|July 2, 2024
概括
工程混凝土复合材料增强混凝土复合材料支结构 (ECSSs) 提供了改善的抗位移性能和通过活跃断层减少道变形. 与传统结构相比,优化的ECSS显著减少了裂和损坏.
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:
- 传统的复合材料支结构 (CCSS) 在道穿过活跃断层时,在抗位移性能和变形能力方面存在局限性.
- 在地震活跃区域的道需要强大的支系统,能够承受断层位移.
研究的目的:
- 开发和评估用于活跃断层区域的道的新型工程水泥复合材料增强混凝土复合材料支结构 (ECSS).
- 调查ECSS在故障移动下的脱位响应特征和参数灵敏度.
主要方法:
- 进行了1/25尺度断层脱位模型测试,以模拟地震活动.
- 用有限元分析来分析ECSS的结构行为和参数灵敏度.
- 在反断位下,ECSS与常规复合材料支结构 (CCSS) 的比较.
主要成果:
- 与CCSS相比,ECSS显著改善了抗脱位性能,并减少了垂直变形.
- 引入工程混凝土复合材料 (ECC) 层和优化设计参数提高了结构完整性.
- ECSS的裂纹减少,没有透裂和裂纹,并且在变形下改善了应力条件.
- 有限元分析表明,总体损伤程度降低,根据故障类型 (正常,冲击滑动,反向) 的不同反应模式.
结论:
- 工程混凝土复合材料增强混凝土复合材料支结构 (ECSS) 为活跃断层区域的道提供了优质的解决方案.
- 优化材料特性,关节间距和抗冲击层可以提高道支的变形能力和抗故障能力.
- 考虑周围岩石条件和断层脱位类型对于有效的抗断层道设计至关重要.
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