新型高层装配式蜂窝型钢网格盒式双筒结构动力特性与抗震性能分析

Dynamic characteristics and seismic performance analysis of a new type of high-rise fabricated honeycomb steel grid boxed double-tube structure

以某拟建工程为例,基于大型通用有限元软件ANSYS建立真实模型,采用振型反应谱分解法,研究了新型高层装配式蜂窝型钢网格盒式双筒结构的动力特性与抗震性能,详细分析了在地震作用下结构的周期、层间位移和层间位移角等。研究结果表明:在多遇地震作用时,新型高层装配式蜂窝型钢网格盒式双筒结构的抗扭刚度较大,沿竖向刚度和质量分布均匀,层间位移和层间位移角均满足规范要求,结构自身的动力特性和抗震性能好;在结构层高相同和用钢量相近的情况下,与普通结构相比,新型结构可以节约19. 97%的钢筋混凝土用量,具有很好的应用价值。

Taking a proposed project as an example, a finite element model was established based on the finite element software ANSYS, the dynamic characteristics and seismic performance of a new type of high-rise fabricated honeycomb steel grid boxed double-tube structure were studied by mode-superposition response spectrum method. The period, interlayer displacement and interlayer displacement angle of the structure under earthquake action were analyzed. The research results show that the new high-rise assembled honeycomb steel mesh box type double-tube structure has large torsional stiffness and uniform vertical stiffness and mass distribution, and the interlayer displacement and interlayer displacement angle can meet the requirement of specification , the dynamic characteristics and seismic performance of the structure are good. When the structural layer height is the same and the steel volume is similar, compared with the common structure, the new structure can save 19. 97% of the reinforced concrete dosage, which has a good application value.