实腹式型钢混凝土框架柱地震损伤模型试验研究

Experimental Research on Seismic Damage Model of Full-Web Steel Reinforced Concrete Frame Columns

摘要: 为连续定量地描述实腹式型钢混凝土框架柱在地震作用下的损伤过程，设计并制作了4根实腹式型钢混凝土框架柱模型，对其进行了低周往复荷载破坏试验。基于已有地震损伤模型存在的不足，结合实腹式型钢混凝土框架柱地震损伤特性，提出了以最大变形处刚度退化和累积滞回耗能为参数的地震损伤模型。该地震损伤模型对实腹式型钢混凝土框架柱抗震设计、动力可靠性分析和震害评估提供理论参考。

Abstract: In order to quantitatively describe the damage process of full-web Steel Reinforced Concrete (SRC) frame columns under earthquake, 4 models of full-web SRC frame columns were designed and manufactured, and the destructive test under low cyclic loading was carried out. Based on the shortcomings of the existing seismic damage models, seismic damage characteristics of full-web SRC frame columns are considered, and a seismic damage model is proposed, which takes unloading stiffness degradation corresponding to maximum deformation and the cumulative hysteretic energy dissipation as damage parameters. The seismic damage model proposed in this paper provides a theoretical reference for seismic design, dynamic reliability analysis and seismic damage assessment of full-web SRC frame columns.