Seismic Responses and Lateral Load capacity of Reinforced Concrete Frames Based on In-elastic Modeling of Columns and Walls

在本研究中，多层钢筋混凝土框架在横向荷载作用下的特性考虑梁、柱和墙的非弹性行为的影响。在框架分析中，提出了简化均布结构的概念，并将横向荷载与位移关系推导为弹性三弯矩方程和三挠度方程。所有受弯矩影响的梁、柱和墙都被具有不同塑性区的构件所取代，塑性区的变化由弯矩与曲率的关系来表示。本研究所得结果总结如下：1. 对于均匀框架，在梁柱节点处检查了柱强度与梁强度的比值S_1。控制框架整体倒塌机制的所需强度比参数S_1在本研究中可能需要大于1.3。2. 参数S_2，即墙体基础强度与所有梁的总强度之比，直接关系到带墙框架的非弹性性能。特别是横向承载能力取决于参数S_2。

In this study, characteristics of multi-story reinforced concrete frames subject to lateral loads are performed to consider the effect of in-elastic behaviors of beams, columns and walls. For frame analyses, it is proposed the concept of simplified uniform buildings, and the equations following relationships between lateral load and displacement are derived to in-elastic three-moment equation and three-deflection equation. All of beams, columns and walls subject to bending moments is replaced by members with varying plastic zone, which is represented by relationships between bending moment and curvature.The results obtained in this study are summarized as followings. 1. For uniform frames, it is examined the ratio S_1 of strength on columns to strength on beams at beam-column joints. The parameter S_1, the required strength ratio, which controls overall collapse mechanism of frames, may be necessary more than 1.3 in this study. 2. The parameter S_2, the ratio of strength on base of wall to total strength on all beams is directly associated with in-elastic behaviors of frames with walls. Especially, lateral load capacity is dependent on the parameter S_2.