Study on nonlinear response of intake tower under oblique incidence of near-fault SV wave
As more and more water conservancy projects are constructed in the seismogenic fault zone in the western region,the probability of water conservancy projects encountering near-site vibration is also increasing.Due to the shallow buried depth of near-fault ground motions,the assumption of vertical incidence of seismic waves is no longer applicable.At present,there is little research on the seismic response of the intake tower under the oblique incidence of near-fault ground motions.In this paper,taking an engineering intake tower as an example,a three-dimensional plastic damage finite element analysis model of the intake tower is established,and the nonlinear response analysis of near-fault pulse ground motion SV wave under multi-angle oblique incidence is carried out.The results show that the displacement response of tower top under the oblique incidence of near-fault ground motion SV wave increases significantly,and the damage area and damage degree of tower body increase with the increase of angle.
万方数据
维普
