某工业建筑采用黏弹性消能支撑的减震设计研究

介绍了8度区某工业建筑采用黏弹性消能支撑的减震设计方案,阐述了黏弹性阻尼器及消能支撑的减震设计步骤,给出了地震反应计算方法和主要计算结果。计算表明,结构安装黏弹性消能支撑后,可按7度抗震设防要求设计,结构阻尼比增加10%左右,层间位移和加速度较原结构减小明显,在多遇、罕遇水平地震作用下,能分别满足承载力和变形的要求。

Study on seismic design of an industrial building using energy-dissipated braces composed of viscoelastic dampers

The design scheme of an industrial building using energy-dissipated braces composed of viscoelastic dampers for seismic intensity zone 8 is briefly outlined.The seismic design procedures of viscoelastic dampers and energy-dissipated braces are illustrated.The analysis method for earthquake responses together with the analysis results is presented.The calculated results indicate that the structure can be designed for seismic intensity 7 provided that viscoelastic dampers are utilized.It was found that the viscoelastic damper can increase the damping ratio of the base structure from 5% to 15% or so,this results in a significant reduction of the inter-story displacements and accelerations.Moreover,the bearing capacity and deformation of the structure can satisfy the requirements of the seismic code under the horizontal motions of frequently or occasionally occurred earthquakes.