作　　者： ; ; ;

机构地区： 同济大学土木工程学院结构工程与防灾研究所

出　　处： 《福州大学学报（自然科学版）》 2013年第4期629-639,共11页

摘　　要： 金属消能器因其构造简单、施工方便、造价低廉、性能稳定以及便于更换等特点而在工程抗震领域中得到广泛应用,然而对于其应用于结构减震中的设计方法目前仍存在许多问题.针对附加金属消能器减震结构提出一种简化设计方法,该方法假定金属消能器在小震下仅提供附加刚度(即忽略其附加阻尼影响),在中震下基于附加有效刚度的影响来考虑附加阻尼的作用,由此以"小震下基于附加刚度设计、中震下基于附加阻尼设计"为设计理念,并从主体结构与附加消能部件分开设计的思路出发给出具体的设计流程及消能器支撑参数配置公式.最后,通过工程案例分析来证明其可行性及有效性,结果表明该简化设计方法可以契合现行抗震设计规范,并用于结构附加金属消能器的减震设计,以取得良好的减震控制效果. Metallic damper has been widely applied in seismic design of engineering structures for its advantages of simple mechanism,constructing convenience,lower cost,better performance,and easy to be maintained.However,there are still some controversies in current design procedure of structures with added metallic dampers.Pursuant to this,a simplified design procedure for such damping structures is proposed in this paper,which supposes that the metallic damper can only provide added stiffness（i.e.neglecting its added damping and added mass） under frequently occurred earthquake and then account into its added damping with the impact of added stiffness under precautionary earthquake.The design principle is deemed as ＂added stiffness-based design under frequently occurred earthquake and added damping-based design under precautionary earthquake＂,and the specific design process is given with the thought of designing the main structure and energy-dissipating components separately,a series of calculating equations for parameter design of dampers-braces are also presented here.In the end,a case study is conducted to demonstrate its feasibility and effectiveness.It is concluded that this simplified design procedure can well conform with China’s current design codes,and therefore it can be applied to seismic design of building structures installed with metallic dampers,so as to acquiring anticipated control effects and damping targets.

关 键 词： 金属消能器 设计方法 消能减震 附加刚度 附加阻尼 等效阻尼比 分析模型

领　　域： [建筑科学]