基于消能减震的带消能墙框架结构体系的研究与应用

Study and application of energy dissipation-based frame structure with energy dissipation wall

传统框架结构存在抗侧刚度较弱、缺少抗震二道防线等不足,现行规范对钢筋混凝土框架结构的应用有一定限制。基于消能减震的原理,构造了一种新型的消能构件——RBS消能墙,并将其与框架结构结合组成带消能墙的框架结构体系。采用数值模拟分析和构件试验及振动台试验的方法,进行了带消能墙框架结构体系的抗震性能研究,并给出了带消能墙框架结构的简便设计方法。研究结果表明:RBS消能墙具有良好的滞回耗能特性;在地震作用下,带消能墙框架结构中的消能墙首先屈服耗能,保护主体结构,为框架结构增加了抗震防线;带消能墙框架结构与纯框架结构相比,抗震性能得到明显提高。带消能墙框架结构在青岛某大型商业中心项目的应用效果良好,RBS消能墙的平面布置灵活,建筑空间适应性大,安装施工简便,为框架结构在多高层建筑的应用提供了有利条件。

Traditional frame structure exists some shortage such as lateral stiffness weak and missing seismic second line of defense.The application of reinforced concrete frame structure has certain restrictions by current specification.Based on the principle of energy dissipation,a new type of energy dissipation member-RBS energy dissipation wall is constructed,the frame structure with energy dissipation wall is composed by RBS energy dissipation wall and traditional frame structure.Numerical simulation analysis,member test and shaking table test were used for studying on the seismic performance of the frame structure with energy dissipation wall.The easy deign method of the frame structure with energy dissipation wall was given.The results show that RBS energy dissipation wall has good hysteretic energy characteristics; the energy dissipation wall in frame structure yield first to dissipate energy under seismic action,which effectively protects the main structure components and increases seismic defense to the traditional frame structure; the seismic performance of the frame structure with energy dissipation wall has been significantly improved compared with the traditional frame structure.The application of frame structure with energy dissipation wall has good application effect in a large shopping mall in Qingdao.RBS energy dissipation wall has the advantages of flexible layout,architectural space adaptability and simple construction,which provides favorable conditions to the application of frame structure in multistory buildings and tall buildings.