ABSTRACT

A resilient rocking steel column base (RRSCB) installed with composite combination disc spring (CCDS) is proposed in this paper. The restoring force model and energy calculation formulae of the RRSCB are derived by the theoretical analyses and energy conservation law, respectively. A refined finite element model validated by the cyclic loading tests is established with the aid of ABAQUS to investigate the seismic performance of the RRSCB. The results indicate that the RRSCB possesses satisfactory self-centering capability and desirable energy dissipation capacity for the design displacement. The established restoring force model and energy calculation formulae can reasonably predict the hysteretic behavior of RRSCB under cyclic loading.

摘要

本文提出了一种安装有复合组合碟形弹簧 (CCDS) 的弹性摇摆钢柱底座 (RRSCB)。分别通过理论分析和能量守恒定律推导了RRSCB的恢复力模型和能量计算公式。借助 ABAQUS 建立了经过循环加载试验验证的精细有限元模型，以研究 RRSCB 的抗震性能。结果表明，RRSCB 具有令人满意的自定心能力和设计位移所需的能量耗散能力。建立的恢复力模型和能量计算公式可以合理预测循环加载下RRSCB的滞回行为。