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

对钢筋混凝土柱和钢 (RCS) 连接的非弹性响应进行建模，用于 RCS 框架结构基于性能的评估

• 批准号: 0219503
• 负责人: Gustavo Parra-Montesinos
• 金额: $ 19.98万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-15 至 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0219503&HistoricalAwards=false
• 关键词: Modeling; Inelastic; Response; Reinforced; Concrete

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.

由钢筋混凝土柱和钢梁组成的RCS结构是地震区域中成本效益的结构类型。基于实验结果，RCS关节的模型仅限于强度模型或单调力构成模型。通常在框架结构中遇到的关节的行为，例如与强大的外面板和T型配置的连接，尚不清楚。连接与强大外面板的连接的非弹性行为可能与具有强内部面板的关节明显不同。由于连接上方缺少列部分，轴承故障可能代表T-关节中的威胁。将基于新的和现有的实验和分析结果开发基于性能设计的RCS连接行为的宏观模型。这些模型将包括限制的影响，混凝土软化的影响以及剪切抗性机制对RCS关节滞后反应的相对强度贡献。