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在各种钢筋混凝土结构体系中,框架结构是抗震性能比较差的一种,其主要原因是框架结构只有一道抗震防线。目前在混凝土框架结构中增加抗震防线的结构有混凝土框架—剪力墙结构和钢支撑—混凝土框架结构。在钢框架结构中增加抗震防线的结构有框架—中心支撑结构和框架—偏心支撑结构。本文吸取上述各种结构的优点,提出在混凝土框架结构中增加混凝土斜撑,由混凝土框架和混凝土斜撑组合成一种新的抗侧力结构体系:混凝土框架—斜撑结构。本文通过与同类结构的对比及试设计计算结果分析,来论证这种新的结构体系符合抗震规范对结构体系的各项要求,在抗震性能及经济适用等方面都具有一定的优越性,可以应用到实际工程中。
In a variety of reinforced concrete structures, the frame structure is a relatively poor seismic performance, the main reason is that the frame structure has only one seismic line. At present, the structure of adding anti-seismic defense in concrete frame structure includes concrete frame-shear wall structure and steel support-concrete frame structure. In the steel frame structure to increase the anti-seismic defense of the framework - the central support structure and frame - eccentric support structure. This paper draws on the advantages of the various structures mentioned above and proposes to add concrete bracing in the concrete frame structure and to combine the concrete frame and the concrete bracing into a new anti-lateral force structure system: concrete frame-bracing structure. In this paper, through the comparison with the similar structure and the analysis of the test design calculation results, this new structure system is proved to meet the requirements of the seismic code for the structural system and has some advantages in seismic performance and economic applicability, which can be applied To the actual project.