不同转换梁形式对隔震装配式联肢墙结构受力性能的影响  

The Influence of Different Transfer Beam Forms on the Mechanical Performance of Isolated Assembled Coupled Wall

作　　者：王勤坤 程蓓 WANG Qinkun;CHENG Bei(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044

出　　处：《北京建筑大学学报》2025年第1期53-60,共8页Journal of Beijing University of Civil Engineering and Architecture

基　　金：国家重点研发计划项目(2017YFC0703600);北京市自然科学基金项目(8162014)。

摘　　要：基于前期基础隔震装配式混凝土联肢剪力墙结构的抗震性能试验,进一步分析了不同转换梁形式对结构损伤模式、滞回曲线、耗能性能、套筒应力和支座面压等受力性能的影响。结果表明,不同形式的转换梁对基础隔震装配式混凝土联肢剪力墙结构的承载力影响较小,且均表现出良好的耗能性能。分离式转换梁改变了上部结构的损伤模式,提升了连梁的耗能性能;加固转换梁避免了转换梁处的损伤,并为墙肢底部提供了刚度更大的嵌固端,减少了墙肢的损伤,有效保护了主体墙体。然而用分离式转换梁和加固转换梁均会引起上部结构中套筒应力的增加。其中采用分离式转换梁的PCSW-2中墙肢连梁处钢筋应力有显著增长,此外,PCSW-2隔震层的转角和支座的拉应力也有增加的趋势,这些因素在设计过程中应予以充分考虑。This study further studies the seismic performance of prefabricated concrete joint shear wall structures with base isolation in the previous period.The effects of different transfer beam forms on the structural damage mode,hysteresis curve,energy dissipation performance,sleeve stress and bearing surface pressure are analyzed.The results showd the bearing capacity of the base-isolated assembled concrete coupled shear wall structure has little difference and shows good energy dissipation performance by using different forms of transfer beams.The separated transfer beam changes the damage mode of the superstructure and improves the energy dissipation performance of the coupling beam.The use of steel plate to reinforce the transfer beam avoids the occurrence of damage at the transfer beam,and provides a fixed end with greater stiffness at the bottom of the wall limb,thereby reducing the damage of the wall limb and effectively protecting the main wall.However,it should be noted that both the separated transfer beam and the steel plate reinforced transfer beam would cause an increase in the stress of the sleeve in the superstructure.Among them,the stress of the steel bar in the PCSW-2 structure with the separated transfer beam has a greater increase.In addition,the rotation angle of the PCSW-2 isolation layer and the tensile stress of the support also have an increasing trend.These factors should be fully considered in the design process.

关 键 词：装配式混凝土联肢剪力墙 基础隔震 分离式转换梁 损伤模式 

分 类 号：TU375[建筑科学—结构工程]