某电梯试验塔结构刚度突变对策研究  

Study on the Strategy of Structural Stiffness Mutation of an Elevator Test Tower

作　　者：陈春晖 徐其功 魏还俊 郑昊 CHEN Chun-hui;XU Qi-gong;WEI Huan-jun;ZHENG Hao(Guangdong Jianke Architectural Design Institute of Guangdong Co.Ltd.,Guangzhou 510010,China)

机构地区：[1]广东省建科建筑设计院有限公司,广州510010

出　　处：《工程建设与设计》2021年第20期1-3,共3页Construction & Design for Engineering

摘　　要：对大高宽比、高位缩进的超高电梯试验塔进行计算分析,在刚度突变的连接部位,创新地于剪力墙之间设置叠合钢板耗能连梁,用于协调内外筒的变形。采用通用有限元软件Abaqus进行低周反复加载模拟,对叠合钢板耗能连梁钢板的耗能能力进行量化分析,模拟得到的滞回曲线形状饱满,说明该叠合钢板连梁耗能能力良好。叠合钢板耗能连梁在多遇地震和罕遇地震下有效减小了剪力墙所受到的剪力和弯矩,解决了该超限结构缩进处剪力墙剪力超限的难题。叠合钢板在罕遇地震下大部分进入了塑性阶段,作为结构的第一道抗震防线,耗散地震能量,很好地保护了主体结构,保证了结构抗震安全性,且避免了混凝土连梁大面积超筋的情况。Based on the calculation and analysis of the super-high elevator test tower with large height width ratio and high retraction, a new composite steel plate energy dissipation coupling beam is set between shear walls at the joint with sudden change of stiffness to coordinate the deformation of the inner and outer tubes. The general finite element software Abaqus was used to simulate the low cycle repeated loading, and the energy dissipation capacity of the composite steel plate was analyzed quantitatively. The shape of the hysteretic curve was full, which showed that the composite steel plate coupling beam had good energy dissipation capacity. The composite steel plate energy dissipation coupling beam effectively reduces the shear force and bending moment of the shear wall under frequent and rare earthquakes, and effectively solves the problem of ever-limit shear wall at the contraction of the over limit structure. As the first seismic defense line of the structure, the composite steel plate dissipates the seismic energy, well protects the main structure, ensures the seismic safety of the structure, and avoids the situation of large area over reinforcement of the concrete coupling beam.

关 键 词：刚度突变 叠合钢板连梁 耗能 

分 类 号：TU318[建筑科学—结构工程] TU973