【摘要】 长周期结构的抗震设计正越来越引起人们的注意。但是,只是在高性能的数字强震仪问世以后,我们才能够得到可靠的地震动长周期信息,本文收集分析了在中国和墨西哥得到的约200条数字强震仪加速度记录,计算了周期从0.02秒至15秒的绝对加速度反应谱、相对速度反应谱和相对位移反应谱,并讨论了震级、场地条件和震中距的影响。所得到的初步结果为长周期结构的抗震设计提供了重要的依据。更多还原

【Abstract】 The increasing number of structures with long natural periods makes it necessary to study the features of long-period earthquake ground motion which can be reliably obtained from the records of digital accelerographs. About 200 horizontal components of accelerograms recorded by digital accelerographs in China and Mexico are collected and analysed. The absolute acceleration response spectra, relative velocity response spectra and relative displacement response Spectra in the period extend of 0.2 to 15 second have been calculated, and the influences of magnitude, site conditions and epicentral distance on spectra are discussed. The preliminary results provide a basis for aseismic design of long-period structures.更多还原