ABSTRACT

This study investigates the inelastic displacement of structures subjected to earthquake-tsunami loadings. The relative intensity is defined as the ratio of the tsunami force per unit mass to the S_a of the corresponding ground motion. The effects of the hysteretic model, soil condition, post-yield stiffness, damping, and relative intensity on the inelastic displacement ratios are investigated. The results show that, compared to earthquakes alone, earthquake-tsunami loadings can enlarge the inelastic displacement ratio demands, especially for higher relative intensities. A predictive model is developed by considering several parameters, which may be used in the framework of performance-based seismic design.

摘要

本研究调查了结构在地震-海啸荷载作用下的非弹性位移。相对强度定义为每单位质量的海啸力与相应地震动的S _a之比。研究了滞回模型、土壤条件、屈服后刚度、阻尼和相对强度对非弹性位移比的影响。结果表明，与单独的地震相比，地震-海啸载荷可以扩大非弹性位移比的要求，特别是对于较高的相对强度。通过考虑几个参数来开发预测模型，这些参数可用于基于性能的抗震设计框架中。