【摘要】 为提升高层结构连梁的抗震性能,使连梁尽可能多地耗散地震能量,延长塑性发展过程,形成抗震防线,基于内嵌式钢板阻尼器复合连梁,考虑钢板阻尼器与混凝土的不同粘结形式,研究了二者的协同工作机制及破坏模式。针对钢板阻尼器复合连梁的钢板阻尼器与混凝土界面,假定了四种不同的粘结形式。通过分析得出,粘结形式的不同导致钢板阻尼器与连梁的破坏模式存在明显差异,其中,连梁混凝土的耗能区域和破坏形式随着粘结形式的改变表现为弯剪破坏、弯曲破坏及剪切破坏,而钢板阻尼器的耗能分布及耗能程度亦均与粘结形式有关。最后对钢板阻尼器复合连梁的承载能力和耗能能力进行分析,并考虑连梁对墙肢损伤的影响,确定了具有最合理粘结形式的钢板阻尼器复合连梁设计。更多还原

【Abstract】 In order to enhance the seismic performance of high-rise structure coupling beam,make coupling beam dissipate earthquake energy as much as possible,extend the plastic development process of coupling beam to form seismic lines,the cooperative work mechanism and failure modes of concrete and steel plate dampers were studied by considering different bond forms between them based on the composite coupling beam embedded with steel plate damper. Four different bond forms were assumed considering the surface of composite coupling beams steel plate dampers and concrete. Analyses show that the failure modes have significant differences on steel plate dampers and steel plate damper composite coupling beams because of different bond forms. The energy dissipation regions and failure modes of concrete of steel plate damper composite coupling beam display bending shear failure,bending failure and shear failure as the change of bond forms,while the distribution and degree of energy dissipation of steel plate dampers also relate to bond forms. Finally,the design of steel plate damper composite coupling beam with the most reasonable bond form was determined through analyses of carrying capacity,energy dissipation capacity of the damper composite coupling beam and the damage impact of the coupling beam on wall limbs.更多还原