高层钢结构中BRC跷动技术的减震影响分析

利用有限元分析软件SPA2000,建立12层的钢框架结构,在原框架底层柱X方向、Y方向添加BRC结构.分析三种结构方案在EL-Centro波、Taft波和TRI_TREASURE ISLAND_90这三种地震波作用下的顶层最大位移、基底剪力和顶层绝对加速度时程分析这几种结构反应.结果表明:BRC结构与传统钢结构相比,自振周期有所增加,对顶层最大位移和基底剪力的控制效果非常明显,具有显著的减震效果.

Damping effect analysis of highrise steel structure with bucklingrestrained column

Using finite element analysis software SPA2000, set up 12 layers of steel frame structure, in the original framework bottom column X direction, Y direction add BRC structure. This paper analyses these three structure scheme in EL - Centro wave, Taft wave and TRI_TREASURE ISLAND_90 these three under the action of seismic wave at the top of the maximum displacement, base shear and top absolute acceleration time history this several structure reaction. The main research this kind of structure for high-rise steel frame structure building shock advantage and defect.The results show that:Compared with the traditional steel structure BRC structure of the natural vibration period is increased, but on the top floor of the maximum displacement and basal shear control effect is very apparent.