THREE-DIMENSIONAL PUSHOVER ANALYSIS FOR REINFORCED CONCRETE ASYMMETRIC STRUCTURES
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摘要: 研究了采用N2方法进行三维pushover分析的原理与步骤,并对一个12层钢筋混凝土非对称框架结构进行了分析,以弹塑性时程分析结果为标准对pushover分析结果进行了比较。结果表明,水平力倒三角分布与简化模态分布的N2方法能较合理地预测结构的各层最大弹塑性层间位移,但低估了结构的弹塑性层间扭转角。
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关键词:
- 非对称结构 /
- 三维pushover分析 /
- N2方法
Abstract: The principle and procedure of 3D pushover analysis with N2 method are studied,Then,3D pushover analysis is performed for a 12-story reinforced concrete asymmetric frame structure,whose result is evaluated by the elastic-plastic time history analysis.The comparative result shows that the N2 method with reversed-triangle and simplified modal lateral load pattern can predict the more rationally maximal interstory drift,and that the pushover's result underestimates the elastic-plastic interstory torsion rotations.-
Key words:
- asymmetric structures /
- 3D pushover analysis /
- N2 method
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