【摘要】 对阻尼填充墙的SBS层进行水平往复加载试验,研究了竖向压应力、加载频率和卷材层数对SBS层力学性能的影响及其耐疲劳性能。试验结果表明:(1)SBS层工作性能稳定,滞回曲线饱满对称,SBS层产生黏滞滑移耗能,耗能性能良好。(2)竖向压应力、加载频率和卷材层数的变化对SBS层力学性能具有一定的影响;随着竖向压应力的增大,SBS层的早期抗剪切刚度显著增大,耗能性能小幅提升;SBS层具有速度相关性,加载频率增大时,SBS层的耗能性能明显提高;增大卷材层数会致使SBS层的剪切刚度和耗能效果降低。(3)疲劳试验中,SBS层的剪切刚度和耗能量有一定的衰减,但等效黏滞阻尼系数有所上升,滞回环形状基本不变,SBS层仍可有效耗能,耐疲劳性能良好。更多还原

【Abstract】 The performance of SBS damping layer,which was applied to damping infill walll with different influence factors,was studied. The factors were vertical compressive stress,loading frequency,material layers and fatigue. The test results show that:( 1) SBS layer realizes viscous sliding dissipation and the performance is stable.The hysteretic curves are plump and symmetrical,and the energy dissipation performance is high.( 2) The factors of vertical compressive stress,loading frequency and material layers have a certain influence on the mechanical properties of SBS layer. With the increasing of the vertical compressive stress,not only the early shear stiffness but also the energy dissipation performance of SBS layer increases in different degrees. The performance of SBS layer is correlative with loading speed. When the loading frequency increases,the energy-dissipation capacity of SBS layer increases obviously. Increasing material layer would cause the equivalent shear stiffness and energy consumption to decrease.( 3) During the fatigue test,the shear stiffness and the energy consumption have varying degrees of attenuation,but the equivalent viscous damping coefficient of SBS layer has not. After fatigue test,the SBS layer still has high fatigue resistant performance and the hysteresis loop and the energy performance are great.更多还原