带破损安全层钢筋混凝土框架结构抗震性能研究  

Study on a seismic pattern of reinforced concrete frame structure with damaged safety layer

作　　者：柏洁 廖光明[1] 李辉进 

机构地区：[1]四川大学建筑与环境学院,四川成都610065

出　　处：《山西建筑》2018年第6期36-38,共3页Shanxi Architecture

摘　　要：我国的《建筑抗震设计规范》通过调整梁柱节点处梁和柱的抗剪承载力实现"强柱弱梁",目的是为了减缓柱端屈服,期望出现梁铰机制,可实际上考虑到现浇楼板对梁的影响,几乎无法实现理想的梁铰机制破坏。基于该特点,试图在建筑结构底层地下室或非生活区域专门设置一相对薄弱层,使其在遭受设计烈度地震作用时发生规范允许范围内的变形,在遭受大震作用时该破损安全层形成塑性铰产生大的变形,吸收和耗散大部分地震能量从而保证上部结构的整体性,降低房屋建筑在大震作用下的整体破坏。China's Code of Seismic Design of Buildings achieves"strong columns and weak beams"by adjusting the shear capacity of beam and column at beam-column joints,whose purpose is to reduce the yield of column ends,with expectation of beam-hinging mechanism. But practically,it is almost impossible to achieve ideal damage of beam-hinging mechanism considering the effect of pouring floor on the beam. Based on this feature,this paper attempts to set up a relatively weak layer in the bottom or non-living area of the building structure,so that it is deformed within the allowable range when subjected to design earthquake. The damaged safety layer forms a plastic hinge to produce large deformations that absorb and dissipate most of seismic energy to ensure the integrity of the upper structure and reduce the overall damage of building under the action of intensity earthquake.

关 键 词：结构抗震 破损安全层 双薄壁柱 

分 类 号：TU352[建筑科学—结构工程]