【摘要】 详细介绍了地震动随机场模型的基本理论，通过引入相干函数来描述各点地震动的相关性，能够较好地反映地震动的时空变化特征．基于这一理论利用数字模拟方法生成的时程样本适合于大跨度结构的时程反应分析．更多还原

【Abstract】 The fundamental theory of stochastic model for seismic ground motion is presented in detail. The model introduces coherence function to describe the correlation of seismic ground motion, which can mirror time and space variation of it fairly well. The samples generated by digital simulation based on the theory are suitable for time history analysis of large span structures.更多还原