一个高层钢筋混凝土建筑的基于移动的地震脆弱性评估
Keshav Kumar Sharma1, Ashhad Imam2, Pramod Kumar3
1Department of Civil Engineering, National Institute of Technology Jamshedpur, Jamshedpur, Jharkhand, 831014, India.
Scientific reports
|November 3, 2025
概括
本研究使用基于位移的方法评估印度高层建筑的地震脆弱性. 扭曲不规则显著增加了地震风险,突出了改进设计和缓冲系统的必要性.
科学领域:
- 结构工程 结构工程
- 地震工程的工程是地震工程.
- 土木工程 土木工程是指土木工程.
背景情况:
- 印度的高层钢筋水泥混凝土 (RCC) 建筑按照IS代码进行设计.
- 常规时刻阻力框架 (OMRF) 是常见的,但它们的地震性能,特别是不规则性,需要详细评估.
研究的目的:
- 为了对一个G+19高层RCC建筑进行基于移位的地震脆弱性评估.
- 根据几何不规则和印度地震法规的规定,评估地震脆弱性.
- 为了将基于移位的评估与高层建筑的基于力量的方法进行比较.
主要方法:
- 在 ETABS 中以现实的参数建模一个 G+19 OMRF 建筑.
- 使用FEMA P695地面运动记录进行增量动态分析 (IDA).
- 使用地面峰值加速 (PGA) 和光谱位移作为强度度量,以及层间漂移比作为损坏参数.
主要成果:
- 发现扭曲不规则会显著影响地震反应,集中在中层楼层的漂移.
- 脆弱度曲线显示,超过0.25g PGA的生命安全限值的急剧增加.
- 在不规则的高层建筑中,基于移动的评估比基于武力的方法更准确.
结论:
- 增强的设计考虑因素,包括刚度规律性和减压系统,对于提高印度高层RCC建筑的弹性至关重要.
- 该研究提供了一个基于性能的地震评估框架,适用于新设计和改装.
- 基于流离失所的脆弱性评估为复杂结构提供了更现实的脆弱性评估.
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