摘要
结合我国现行抗震规范的场地划分,提出了一种将非平稳随机地震动等效为平稳随机过程的地震动功率谱模型,导出了谱强度与最大地面运动加速度均值、地震烈度和地震水准的关系,并考虑了部分相干效应、行波效应等空间相关特性的影响。结合工程实例,对比反应谱法验证了自功率谱模型的准确性。该模型可用于空间结构的单一激励或多点激励的随机地震反应分析,具有较高的实用价值。
According to the site classification in the seismic code,a practical ground motion power spectrum model is proposed.This model simulates the nonstationary ground motion into a stationary process.The relations between spectral intensity and parameters including the mean value of maximum ground accelerations,earthquake intensity and earthquake level, are derived.The ground motion coherence effect and wave passage effect are considered.This model is confirmed by comparing with response spectrum method using an actual engineering example.This is in concert with the site classification in the seismic code,so it is quite practical.
出处
《建筑结构》
CSCD
北大核心
2005年第5期28-30,共3页
Building Structure
