复合隔震墩性能试验研究

Research on composite seismic isolation pier

为了在广大农村地区推广基础隔震技术,开发了一种由钢筋和混凝土构成的复合隔震墩并对其进行了试验研究。介绍了该装置的设计制作及工作原理,通过拟静力试验确定其竖向力学性能。并以刚体试块代替刚度较大的砌体建筑物对复合隔震墩进行振动台模拟地震试验,研究复合隔震墩在三维振动情况下的隔震性能,试验结果表明,复合隔震墩吸收了大部分地震能量,刚体试块加速度较输入加速度降低70%以上,减震效果明显,且造价低廉,适合于我国广大农村地区及发展中国家采用。

In order to extend the application range of base isolation technology in rural areas, the composite seismic isolation pier composed of steel and concrete was developed and relevant experimental studies were carried out. De- sign process and working principle of the device are introduced. Based on the pseudo-static tests, vertical mechani- cal properties of the device were studied. With rigid mass block in place of low building with greater rigidity , the simulated test on shaking table was carried out. The results show that the peak values of acceleration of the mass block decrease by 70% when the earthquake ground motions are input due to the energy absorption by the compos- ite seismic isolation pier. The damping effet of this pier is obvious. It is low cost and suitable for rural areas of China and other developing countries.