The invention relates to the technical field of anti-earthquake design and evaluation, and specifically relates to a
ground motion selection method based on anti-earthquake specifications. The groundmotion
selection method comprises the steps of firstly performing preliminary selection according to earthquake environment characteristics of the design site, selecting earthquake ground records which conform to the earthquake environment characteristics of the site, and then carrying a following matching step, thereby being capable of effectively controlling
earthquake engineering characteristics of the earthquake
ground motion; then controlling the spectrum shape of a
response spectrum through the variance by means of selecting key points the variance so as to achieve the purpose of overall spectrum
shape matching of the
response spectrum; and finally selecting a group of required
ground motion records through precisely matching characteristic period points of a specification responsespectrum. The ground motion records selected according to the ground motion
selection method based on the anti-earthquake specifications can enable the average
response spectrum of the selection ground motion to reach consistency with the specification response spectrum in a statistical sense, and can control the spectrum shape of the response spectrum. In addition, the ground motion can keep
earthquake engineering characteristics of the natural ground motion, so that the ground motion selection method is applicable to the anti-earthquake design and evaluation.