摘要
为了对西南地震高烈度区的水工建筑物进行抗震验算,分别采用拟静法和振型分解反应谱法对雅砻江官地水电站进水塔结构进行抗震分析。分析了两种方法下地震惯性力和动水压力计算的差异,并分别对进水塔进行了抗滑与抗倾覆稳定性验算。结果表明,两种方法计算得到的安全系数均符合规范要求,两者抗滑稳定系数相差不大,而抗倾覆稳定系数相差较大,用振型分解法计算抗倾覆稳定性更加保守。
The seismic response of the intake tower of Guandi Hydropower Station on Yalong River was analyzed by two methods,namely pseudo-static method and mode response decomposition method.The difference of seismic inertia force and hydro dynamic pressure by these two methods was studied.The over-turning resistant stability and anti-sliding stability were discussed by the two methods as well.The calculation showed that the results obtained by these two methods met the requirement of design code;the anti-sliding stability factors were almost the same,while the difference of the over-turning resistant stability factors was larger;the mode-decomposition method was more conservative.
出处
《人民长江》
北大核心
2011年第17期51-54,共4页
Yangtze River
基金
国家自然科学基金资助项目(90510018)
关键词
抗震分析
振型分解法
拟静力法
抗倾覆稳定
抗滑稳定
进水塔
seismic response
mode response decomposition method
pseudo-static analysis
over-turning resistant stability
anti-sliding stability
intake tower
