【摘要】 通过对白噪声模型、金井清模型和马尔可夫过滤有色噪声模型等常用地震动模型的分析,本文提出了更全面考虑基岩及土层的过滤特性且可解决有关加速度导数方差收敛性的新型地震动模型——双重过滤自噪声模型,并研究了其建模与定参方法.分析表明,该模型具有明确的物理意义,且更符合实际,颇具实用价值,为结构抗震可靠性分析提供了一种较好的地震动模型.更多还原

【Abstract】 Through the analyses of the normal ground motion models, such as the While Noise Model, the Kanai Model and the Markov Model, a new ground motion model, called Bi-filtered White Noise Model, is presented in this paper. This model can more comprehensively consider the filtrating characteristics of bedrock and soil and can solve the convergence problem of derivate variance of acceleration process.And then the method of establishing the model and determining its parameters is studied. The analyses show that this model has definite physical meaning and conforms well to reality, so it can provide a feasible foundation for analysis of aseismic structure reliability.更多还原