网架减震球型钢支座减震性能振动台试验研究

Shaking Table Test Study on Damping Performance of Steel Ball-bearing for Grid Structure

摘要:

针对网架结构的受力特点,提出了一种新型网架减震球型钢支座。按照相似原理制作了网架减震球型钢支座的缩尺模型,并通过模拟地震振动台试验系统地研究了这种支座在地震作用下的减隔震性能。试验结果表明,网架减震球型钢支座能够有效阻隔地震动向上部结构的传递,滞回环饱满、等效阻尼比大,具有良好的隔震及减震耗能能力。

Abstract:

A new type of steel ball--bearing is presented to match the stress features and requirements of grid structures. According to the similarity principle, four scale models of grid steel ball-bearing were made and shaking table test was carried out to systematically study the isolation and damping performance of them under different seismic inputs. The results show that the bearings can effectively isolate the input of seismic vibration into upper structure and have better damping and energy dissipation ability.