钢管混凝土框架-两边连接钢板组合剪力墙结构反应修正系数分析

钢管混凝土框架-钢板组合剪力墙结构体系（CFST-CSPSW）具有良好的延性和耗能能力，在实际工程中具有很好的应用前景。文章采用OpenSees有限元软件建立了CFST-CSPSW结构体系分析模型，基于增量动力时程分析法(IDA法)，评估了CFST-CSPSW结构体系的抗震性能，分析了结构层数、跨数、自振周期等参数对结构性能参数的影响规律。研究表明:钢管混凝土框架-钢板组合剪力墙结构体系是一种抗震性能优越的双重抗侧力结构体系，其结构反应修正系数R和位移放大系数Cd随结构自振周期、层数、跨数的增大略有减小，结构性能系数变化趋势均随结构高度的增大逐渐减小趋于平缓。基于本文分析模型，提出了钢管混凝土框架-两边连接钢板组合剪力墙结构体系的结构反应修正系数R平均值为3.27，位移放大系数Cd平均值为3.05，为基于性能的组合结构体系设计提供参考。

Structural response modification coefficient analysis of CFST frame-composite steel plate shear walls with two-side connections

Composite structure of CFST frame-composite steel plate shear walls with two-side connections possesses high load-carrying capacity, good ductility and high energy dissipation capacity. Hence， it has good application prospects in practical engineering. In this paper, the finite element software OpenSees was used to develop the CFST-CSPSW structural system model, whose accuracy was validated by comparing with the experimental results. By using the incremental dynamic analysis (IDA) method, the seismic performance of CFST frame with CSPSWs was evaluated. In the following parameter analysis, the influence of story number, span number and structural period on the structural performance factors was analyzed. The research results indicate that CFST frame and CSPSW can work together well on resisting lateral load. Structural response modification coefficient R and displacement amplification factor Cd decrease with increasing of story number, span number and structural period. Based on the analysis results, the reasonable values of the structural response modification coefficient R=3.27 and displacement amplification factor Cd=3.05 proposed.