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SBS沥青阻尼隔震垫是由SBS改性沥青防水卷材与钢丝网交替叠置组合而成的。在BS隔震垫的基础上改用SBS沥青阻尼隔震垫进行了试验研究。试验结果表明,SBS沥青阻尼隔震垫具有较高的承压强度和很大的阻尼比,其水平剪切刚度随着剪应变的增加而下降,具有明显的软化特性。同时,为考察新型隔震垫的隔震效果,运用有限元软件ABAQUS对采用SBS沥青阻尼隔震垫的隔震建筑物进行数值模拟分析。结果表明,隔震结构顶层的加速度响应减小了40%~50%。
SBS asphalt damping isolation pad is made of SBS modified bitumen waterproofing membrane and steel mesh alternately stacked combination. Based on the BS isolation mats, SBS asphalt damping isolation mats were used to conduct the experimental research. The test results show that SBS asphalt damping isolation mats have high compressive strength and damping ratio. The horizontal shear stiffness decreases with the increase of shear strain and has obvious softening properties. At the same time, in order to investigate the isolation effect of the new type of isolation mats, the numerical simulation analysis of the isolated buildings with SBS asphalt damping mats was carried out by the finite element software ABAQUS. The results show that the acceleration response of the top of isolation structure is reduced by 40% ~ 50%.