钢筋混凝土双肢柱抗震性能试验研究

本文通过两种、四榀不同剪跨比的钢筋混凝土双肢柱在恒定垂直偏心荷载作用下的拟动力试验研究和理论分析，考察了双肢柱在水平地震力作用下裂缝出现、刚度变化、破坏状态及动力反应全过程，探讨了腹杆形式、数量及节点的合理设计对双肢柱抗震性能的影响，提出了裂缝出现后拉、压肢刚度的计算公式，并采用杆系模型、增量法对平腹杆双肢柱进行了弹塑性分析，为编制冶金抗震设计规范提供了依据。

Experimental Study on Aseismic Behavior of Reinforced Concrete Coupled Column

Based on the quasi-dynamic test and theoretical analysis of reinforced concrete coupled column specimens with different shear span ratio under constant vertical eccentric loads and different intensity of earthquake actions, the crack occurrence, stiffness variation and failure state of coupled column under horizontal earthquake action as well as its whole dynamic response process were studied. The various factors which affect the aseismic behavior of the coupled column such as the shape and amount of web member as well as the rational design of joints were discussed, and the calculating formulas for stiffness of the two column limbs were presented. Lastly,the coupled column with horizontal web member were analyzed by use of the member system model and incremental method as a reliable basis for the compilation of the aseismic design code for metallurgical structures.