Probability Model and Solution on Earthquake Effects Combination in Along Wind Resistant Design of Tall-Flexible Buildings

A model on the earthquake effect combination in wind resistant design of high-rise flexible structures is proposed in accordance with the probability method. Based on the Turkstra criteria, the stochastic characters of wind velocity, earthquake ground acceleration and excitations occurrence probability were taken into account and then the combination of the earthquake effect in structure wind resistant design was analyzed with the convolution approach. The results indicate that as for the tall flexible buildings whose lateral force is governed by wind loading, the maximum lateral loads verification in terms of the wind resistant design combined with earthquake effect may be more unfavorable compared with that with respect to the earthquake resistant design involving wind effect.