带消能楼梯间框架结构抗震性能分析

Analysis on seismic performance of frame structure with energy dissipation stairwell

带消能楼梯间属于一种较为新颖的楼梯结构,其通过减震楼梯及阻尼墙的设置,可有效消除楼梯板的支撑效应,提高对结构的约束效应,进而控制楼梯间抗震性,面对自然灾害,使楼梯成为人们逃生的重要通道。故对带消能楼梯间建模,便于分析,以有限元模型为基础,模拟地震影响下的楼梯结构变化。最终分析发现,消能楼梯间可以对地震产生的能量间接消耗,进一步增加阻尼比,以此提高框架结构抗震性能,控制构件受到损坏的程度,具有推广意义。

The energy-dissipating stairwell belongs to a relatively novel stair structure.Through the installation of shock-absorbing stairs and damping walls,the supporting effect of the stair slab can be effectively eliminated,the restraint effect on the structure is improved,and the seismic resistance of the stairwell can be controlled.Natural disasters make stairs an important way for people to escape.Therefore,the article models the stairs with energy dissipation,which is convenient for analysis.Based on the finite element model,the stair structure changes under the influence of earthquake are simulated.The final analysis found that the energy-dissipating staircase can indirectly consume the energy generated by the earthquake and further increase the damping ratio,thereby improving the seismic performance of the frame structure and controlling the degree of damage to the components,which has promotional significance.