PRC连梁-混合联肢剪力墙抗震性能分析

PRC连梁-混合联肢剪力墙是将传统的钢筋混凝土联肢剪力墙中的混凝土连梁用钢板-混凝土组合（PRC）连梁代替而形成的一种新型结构体系，对其抗震性能尚缺乏系统研究。该文在对PRC小跨高比连梁构件研究成果的基础上，设计出了PRC连梁-混合联肢剪力墙的BS基本模型试件，利用有限元软件对PRC连梁-混合联肢剪力墙抗震性能进行数值模拟，研究了连梁内嵌钢板部分、连梁钢筋部分和混凝土部分的应力分布情况，分析了结构的塑性铰发展规律。研究了耦联率、连梁截面尺寸、单面墙肢高宽比、楼层总高度和楼板作用等参数对该种新型结构体系抗震性能的影响，建议适合于高烈度抗震设防区PRC连梁-混合联肢剪力墙合理耦联率的取值范围为40%~60%。

RESEARCH ON ASEISMIC PERFORMANCE OF PRC COUPLING BEAM-HYBRID COUPLED SHEAR WALL SYSTEM

PRC coupling beam-hybrid coupled shear wall system is a new structural system formed by replacing the concrete coupling beam with the plate-reinforced composite (PRC) coupling beam in traditional reinforced concrete coupled shear walls. It is still lack of systematic research on its aseismic behavior. Therefore, based on the aseismic performance study of the PRC coupling beam with a small span-to-depth ratio, the BS basic model specimen of the PRC coupling beam-hybrid coupled shear wall system is designed. The aseismic behavior of the PRC coupling beam-hybrid coupled shear wall system is analyzed by using the finite element software. The stress distribution of steel plates, reinforcing bars in coupling beams and concrete is investigated. Meanwhile, the plastic hinges developing law of this hybrid coupled shear wall system is also studied. Further, the influence of a coupling ratio, the section size of a coupling beam, the height-width ratio of a single side wall, the total height of a structure, and the role of a slab on the aseismic behavior of the new structural system is studied. It is recommended that the reasonable coupling ratio for the PRC coupling beam-hybrid coupled shear wall system in a high intensity seismic fortification area is from 40% to 60%.