水电站进水塔不同抗震验算方法对比分析

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英文篇名：Comparison of seismic analysis of intake tower using different methods 中文刊名：人民长江 英文刊名：Yangtze River 作者：范书立 ; 陈健云 ; 陈明阳 ; 彭玮 英文作者：FAN Shuli1 ; 2 ; CHEN Jianyun1 ; 2 ; CHEN Mingyang1 ; 2 ; PENG Wei3(1.State Key Laboratory of Coastal and Offshore Engineering ; Dalian University Of Technology ; Dalian 116024 ; China ; 2.Institute of Earthquake Engineering ; Dalian University of Technology ; Dalian 116024 ; China ; 3.Hydrochina Chengdu Engineering Corporation ; Chengdu 610072 ; China) 中文关键词：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 英文关键词：seismic response ; mode response decomposition method ; pseudo-static analysis ; over-turning resistant stability ; anti-sliding stability ; intake tower 出版日期：2011-09-14 机构：大连理工大学海岸与近海工程国家重点实验室;大连理工大学工程抗震研究所;中国水电顾问集团成都勘测设计研究院; 年：2011 期：17 出版单位：人民长江

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.

引文

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