Seismic Behavior of Composite Moment Resisting Frame Systems

本研究项目研究了由钢混凝土（SRC）柱和钢梁组成的组合抗弯矩框架体系在中高地震危险区的适用性。复合抗弯矩框架系统的抗震设计理念是基于开发一种理想的梁-侧移机制，其中延性钢梁在整个建筑中发展弯曲铰接，在第一层柱-基础界面发展铰接。研究任务包括：(a)试验组合试验，评估复合材料SRC柱和梁柱节点区域在地震荷载作用下提供有效耗能和变形能力的各种配筋细节。将通过头剪钉对连续钢梁在有和没有楼板相互作用的节点上的子组合的响应行为进行研究(b)试验子组合测试，以评估各种加固细节，以确保在关键的第一层SRC柱-混凝土基础界面有足够的强度和变形能力。(c)利用成熟的非线性分析程序IDARC进行分析研究，利用先前的子装配测试和本研究的数据对响应行为进行建模。将进行参数化研究，以确定复合材料子组合中重要的滞后特性，并扩展到评估地震激励下完整的复合抗矩框架系统的响应行为。研究结果对地震作用下复合抗弯矩框架体系设计指南和加强细节要求的适用性。将评估这些结果在制定设计指南和加固细节要求方面的适用性，这些设计指南和要求是由复合SRC柱和钢梁组成的组合式抗弯矩框架结构系统用于中高地震风险区域。

This research project studies the applicability of composite moment resisting frame systems made of composite Steel Reinforced Concrete (SRC) columns and steel beams for zones of moderate-to-high seismic risk. The seismic design philosophy for composite moment resisting frame systems is based on developing a desirable beam-sidesway mechanism, where ductile steel beam flexural hinging develops throughout the building and hinging develops at the first story column-foundation interfaces. The research tasks include: (a) experimental subassemblage testing to evaluate various reinforcing details for composite SRC columns and beam-column joint regions that provide efficient energy dissipation capacity and deformation capability during seismic loading scenarios. The response behavior of the subassemblages will be investigated for continuous steel beams through the joint with and without floor slab interaction by headed shear studs (b) experimental subassemblage testing to evaluate various reinforcing details to ensure sufficient strength and deformation capability at the critical first story SRC column-concrete foundation interface, and (c) analytical studies using the well-established nonlinear analysis program IDARC to model the response behavior using data from previous subassemblage testing and this research study. Parametric studies will be performed to identify important hysteretic properties in the composite subassemblages and expanded to evaluate the response behavior of complete composite moment resisting frame systems during earthquake excitations. The applicability of the results to develop design guidelines and reinforcing detail requirements for composite moment resisting frame systems during earthquake excitations. The applicability of the results to develop design guidelines and reinforcing detail requirements for composite moment resisting frame structural systems made of composite SRC columns and steel beams for zones of moderate-to-high seismic risk will be evaluated.