使用钢筋混凝土提高低层框架的阻尼能力:一项全面的研究
Ahed Habib1, Moussa Leblouba2, M Talha Junaid2
1Research Institute of Sciences and Engineering, University of Sharjah, Sharjah, United Arab Emirates.
Scientific reports
|November 27, 2025
概括
化混凝土 (RBC) 增强了柔性和阻尼性,但降低了强度. 这项研究表明,RBC框架可以减少地震力,并提高地震期间的阻尼效率,从而可控地增加层间漂移.
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
- 可持续建筑 可持续建筑
背景情况:
- 化混凝土 (RBC) 使用回收轮胎作为聚合物,为传统混凝土提供可持续的替代品.
- 虽然RBC增强了延展性和阻尼性,但与传统混凝土相比,它通常显示机械强度降低.
- 在关于混凝土框架的地震性能的全面数值研究中存在一个空白.
研究的目的:
- 为了数值地研究混凝土 (RBC) 框架的抗震性能.
- 将RBC框架与传统混凝土 (NC-C) 和类似强度的混凝土 (NC-S) 框架进行比较.
- 为了评估不同类型的地面运动对RBC框架行为的影响.
主要方法:
- 对三个低层钢筋混凝土 (RC) 框架进行非线性响应历史分析.
- 将置于60个记录的地面运动 (近缺陷,脉冲式,远缺陷) 下.
- 在RBC,NC-C和NC-S框架之间比较地震响应参数.
主要成果:
- 红细胞细胞框架显示基切率降低 (高达13.8%与NC-C相比) 和歇斯底里能量降低 (高达29%).
- 在RBC框架中,粘性减缓能量的增加 (29-53%) 和地板加速度的适度降低 (高达11.8%) 呈现出明显的变化.
- 楼层间漂移比率在RBC框架中增加,但仍在可接受的ASCE 7限制内.
结论:
- 将常规混凝土替换为化混凝土可以提高RC框架的阻尼效率.
- 在严重的地震下,RBC框架显示了降低地震力量的潜力.
- 这项研究强调了改善阻尼和增加化混凝土结构中层间漂移之间的权衡.
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