水电站地面厂房地震响应分析研究综述

Present situation and prospect of seismic response analysis of surface hydropower house

水电作为我国重要的能源组成部分,多集中在强震频发的西南、西北地区,水电站地面厂房有明显区别于其它工业厂房的动力响应特点,整体来看,其地震响应分析的研究进展相对滞后。当前水电站厂房地震响应分析的研究主要涉及计算方法、响应特点、地震动选取、结构有限元模型、响应评价和抗震措施等,有关规范修订也为水电站厂房地震响应分析提出了新的要求。通过总结当前研究现状指出当前制约研究工作迅速推进的主要难点,提出了值得开展或更深入探索的若干研究方向,如流道内动水压力的模拟,结构非线性分析,近断层地震动对水电站厂房动力响应的影响,抗震减震措施的研究与应用等,并针对部分问题提出了初步研究思路。

Hydropower,which mainly distributes in southwest and northwest of China,is an important energy component of China.The seismic response characteristics of surface hydropower house is obviously different from those of other industrial plants.Overall,studies on seismic response analysis of surface hydropower house relatively lag behind.Current studies on seismic response analysis of surface hydropower house mainly involve seismic calculation methods,seismic response characteristics,considerations of ground motion,finite element model,evaluation on seismic response,aseismic measures and so on.The modification of code on seismic response analysis of hydropower house puts forward the tentative idea in this filed.Based on current achievements,research should be developed on simulation of dynamic water pressure,structural nonlinear analysis,effects of near-fault ground motions,and aseismic measures.