关于框架-核心筒结构二道防线梁柱内力调整的讨论  

Discussion on internal force adjustment of the dual defense system of frame-corewall structure

作　　者：曾庆立 魏琏 王森 林旭新 Zeng Qingli;Wei Lian;Wang Sen;Lin Xuxin(Shenzhen Lipeng Structural Engineering Technology Co.Ltd,Shenzhen 518034,China)

机构地区：[1]深圳市力鹏工程结构技术有限公司,深圳518034

出　　处：《建筑科学》2018年第11期48-55,共8页Building Science

摘　　要：以深圳某超高层框架-核心筒结构为案例,在不考虑二道防线、依据不同规范进行二道防线调整等三个不同小震设计模型的基础上,分别建立了大震弹塑性分析模型,分析了二道防线调整对结构损伤的影响,指出框架梁的二道防线调整使得结构更难实现强柱弱梁的延性设计要求,导致竖向构件受力更大且损伤更严重。建议在满足中震性能目标的前提下,框架梁可不进行二道防线调整,框架柱可参照国家相关规范或根据大震弹塑性计算结果进行调整。Taking a high-rise frame-corewall structure in Shenzhen as a case,three elasto-plastic analysis models, including two internal force adjustment of the dual defense system models according to different codes and one no adjustment of the dual defense system, are established respectively, and the effects on structural damage are analyzed. It is pointed out that the adjustment of the beams makes it more difficult to realize the ductility requirements of ’strong column-weak beam’, resulting in greater force and more serious damage to the vertical members. It is suggested that on the basis of meeting the performance target of moderate earthquake, the beams should not be adjusted, and the frame columns can be adjusted by referring to the relevant codes or by the elastic-plastic calculation results of rare earthquake.

关 键 词：二道防线 梁柱内力 大震弹塑性 

分 类 号：TU398.2[建筑科学—结构工程]