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为分析框架—带防屈曲支撑钢连梁筒体结构的抗震性能,以某框筒结构模型为例,其中筒体部分分别采用了全部楼层为普通钢筋混凝土连梁、全部楼层设有普通钢桁架连梁、全部楼层设有带防屈曲支撑钢桁架连梁及局部侧移较大楼层设有带防屈曲支撑钢桁架连梁的4种方案,运用动力弹塑性时程分析方法,分析了4种方案在罕遇地震作用下的地震响应。计算结果表明,在全部楼层中设有带防屈曲支撑的钢桁架连梁方案与全部楼层均为普通钢筋混凝土连梁的方案和全部楼层设有普通钢桁架连梁的方案相比,结构的位移、速度、加速度以及底部总剪力都有不同程度的降低,只在局部侧移较大的楼层布置带防屈曲支撑钢桁架连梁方案与全楼层布置带防屈曲支撑钢桁架连梁方案相比,地震响应相差不大,也能起到较好的减震效果。
In order to analyze the seismic performance of frame-supported beam-supported beam structure with buckling-resistant support, taking a frame-and-frame model as an example, all the floors of the tube body are made of ordinary reinforced concrete beam with common floors and common steel truss There are four kinds of schemes with steel truss girders with anti-buckling braces and large-scale partial lateral displacements on all floors, and four kinds of schemes with steel truss girders with anti-buckling braces are also provided. By using dynamic elastic-plastic time history analysis method, Seismic response of the scheme under rare earthquakes. The calculation results show that the scheme of steel truss girder with anti-buckling support on all floors is similar to the scheme of all the floors of ordinary steel-concrete girder combined with the scheme of all-floors with common steel truss beams. The displacement of the structure , The velocity, the acceleration and the total shear force of the bottom are all reduced to some extent, and the plan of the steel truss with anti-buckling support is laid out only on the floor with large partial displacement. Compared with the plan of the steel truss with the buckling-supported steel truss in the whole floor layout , Little difference between the earthquake response, but also can play a better damping effect.