钢筋混凝土框架-剪力墙结构基于能量抗震设计方法的耗能需求计算与设计流程

基于“强墙肢弱连梁”合理耗能机制控制的前提，提出钢筋混凝土框架-剪力墙结构基于能量抗震设计的实施流程。基于大量钢筋混凝土框架-剪力墙结构算例的弹塑性时程分析结果，给出了钢筋混凝土框架-剪力墙结构各构件累积耗能需求的实用计算方法，包括结构总累积耗能EH，EH 在连梁、墙肢和框架梁中的分配，各类构件累积耗能沿楼层高度的分布，同层同类构件的累积耗能分配。结合合理的构件损伤评价模型，建议了钢筋混凝土框架-剪力墙结构各类构件的能力设计方法，将基于能量抗震设计方法落实到构件层次。最后，通过一个20层钢筋混凝土框架 剪力墙结构算例，说明了所建议的基于能量抗震设计方法的具体应用。与时程分析结果的比较表明，所建议方法的构件耗能需求计算结果与时程分析结果吻合较好，且偏于安全。

Study on energy demand determination and design procedure in energy-based seismic design method of reinforced concrete frame-shear-wall structure

The energy-based seismic design method of reinforced concrete frame-shear-wall structures was proposed based on the ‘strong wall pier-weak coupling beam’ energy dissipation mechanism. Then a large number of reinforced concrete frame-shear-wall structures were analyzed by nonlinear time-history analytical method and the procedure to determine the cumulative energy dissipated by different structural members was proposed, including the determination of total dissipated energy and its allocation between the frame beams, wall piers and coupling beams, the energy distribution along the structural height and among different structural members on the same story. Subsequently, the seismic capacity design of the structural members was performed based on the rational elemental damage evaluation model. Finally, the application of the proposed energy-based seismic design method on reinforced concrete frame-shear-wall structures was demonstrated by the seismic design of a 20-story structure example. It is shown that the dissipated energy demand of the designed structure calculated by the proposed method is closed to the results by the time-history method on the safe side.