(北京筑都方圆建筑设计有限公司  100035)
【提要】  介绍了在三层钢筋混凝土框架房屋上增建三层钢结构框架的计算和设计构造。在增层工程中采用消能支撑方法减少了原结构在发生设防烈度地震作用情况下的内力,从而可避免对原结构进行加固。
【关键词】  RC框架结构  增层  结构设计  阻尼器  连接
Structural Design for Three Steel Frame Built on the Existed RC Structure/Sha Zhiguo(Beijing Zhudu Fangyuan Architectural Design Co.,Ltd.,Beijing 100035,China)
Abstract:A steel structure with three floors built on the existed RC structure with three layers are calculated and designed.For satisfying the safety of the added floors building,the energy dissipation braces are used to reduce the seismic reaction of the existed structure.This measure can avoid reinforcing the existed RC structure.The detail of connection of joints is produced for steel columns  with the existed RC column.
Keywords:energy dissipation brace;seismic;steel structure;RC structure