Journal of Earthquake Engineering ( IF 2.5 ) Pub Date : 2021-09-22 , DOI: 10.1080/13632469.2021.1982798 Duofa Ji 1, 2 , Weiping Wen 1, 2 , Changhai Zhai 1, 2 , Dechun Lu 3
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 Sa 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.
中文翻译:
地震-海啸荷载作用下单自由度结构的非弹性位移比
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。