Modeling Inelastic Response of Reinforced Concrete Columns and Steel (RCS) Connections For Use in Performance-Based Evaluation of RCS Frame Structures

由钢筋混凝土柱和钢梁组成的 RCS 结构是地震区一种经济高效的建筑类型。基于实验结果的 RCS 接头模型仅限于强度模型或单调力变形模型。框架结构中常见的接头行为（例如与坚固的外板和 T 形结构的连接）尚不清楚。具有坚固外板的连接的非弹性行为可能与具有坚固内板的连接的非弹性行为显着不同。由于连接上方缺少柱部分，轴承故障可能会对 T 形接头构成威胁。将基于新的和现有的实验和分析结果来开发模拟 RCS 连接在剪切和承载中的行为以进行基于性能的设计的宏观模型。这些模型将包括约束、混凝土软化以及抗剪机制的相对强度贡献对 RCS 节点迟滞响应的影响。

RCS structures consisting of reinforced concrete columns and steel beams are a cost-effective type of construction in seismic zones. Models for RCS joints have been restricted to either strength models or monotonic force-deformation models based on experimental results. The behavior of joints typically encountered in frame structures, such as connections with strong outer panels and T-configurations, is not well known. Inelastic behavior of connections with strong outer panels could significantly differ from that of joints with strong inner panel. Bearing failures might represent a threat in T-joints because of the lack of a column section above the connection. Macro models that simulate the behavior of RCS connections in shear and bearing for performance-based design will be developed based on new and existing experimental and analytical results. These models will include the effect of confinement, concrete softening, and relative strength contribution from shear resistance mechanisms on hysteretic response of RCS joints.