摘要
从抗倒塌角度出发,提出了部分柱顶滑移钢筋混凝土框剪结构的设想,并建议了具体的设计方法及步骤。通过弹塑性分析,初步比较了该类新型结构与常规框剪结构的经济性及弹塑性地震响应。研究结果表明:1)通过柱顶滑移释放部分框架柱的柱顶内力,可在造价略有增加的情况下,使结构具有更好的抗倒塌能力;2)与滑移柱顶相联的摩擦支座的摩擦系数在一定范围内时,该新型结构既具有与常规结构相近的抗侧刚度以确保小震不坏,又能在大震下确保结构的竖向承载能力以实现大震不倒。
A new kind of RC frame-shear wall structures with partial columns sliding at upper ends is proposed in this paper,and the corresponding design procedures are suggested.Elastic-plastic analyses are conducted for both the proposed structures and conventional frame-shear wall structures,and their construction costs and earthquake responses are compared.Simulation results show that：（a） although the construction cost of the proposed structures is a little higher than that of the conventional frame-shear wall structures,the collapse-resisting capacity of the proposed structures is better than that of the conventional structures;and（b） in the case that the friction coefficients at the upper ends of partial sliding columns are in a certain range,the lateral stiffnesses of the proposed structures are similar to those of the conventional structures,this preventing the proposed structures from damage under a minor earthquake,and the vertical load bearing capacities of the proposed structures subjected to a major earthquake can be maintained,this preventing the proposed structures from collapse.
出处
《工程力学》
EI
CSCD
北大核心
2011年第4期82-88,95,共8页
Engineering Mechanics
基金
国家自然科学基金重大研究计划培育项目(90815012)
国家杰出青年科学基金项目(51025829)
亚热带建筑科学国家重点实验室重点研究项目(2009ZA04)
关键词
框剪结构
柱顶滑移
倒塌
竖向承载能力
摩擦系数
frame-shear wall structure
sliding at column upper end
collapse
vertical load bearing capacity
friction coefficient
