塔式进水口抗震性能研究

英文篇名：An Analysis of Seismic Behavior at the Intake of the Tower Structure
中文刊名：中国农村水利水电
英文刊名：China Rural Water and Hydropower
作者：孙小兵 ; 李新明
英文作者：SUN Xiao-bing1 ; LI Xin-ming2(1.Guangdong Electric Power Design Institute ; Guangzhou 510663 ; China ; 2.Department of Transportation Engineering ; Zhengzhou University ; Zhengzhou 450002 ; China)
中文关键词：塔式进水口 ; 抗震性能 ; 自振特性 ; 振型分解反应谱 ; 弹性时程分析
英文关键词：intake tower ; seismic behavior ; model-frequency behavior ; mode-superposition response spectrum ; time-history method
出版日期：2010-03-15
机构：广东省电力设计研究院;郑州大学交通运输工程系;
年：2010
期：03
出版单位：中国农村水利水电

摘要

综合考虑某塔式进水口高度大、边墙薄的实际情况,联合运用振型分解反应谱法和弹性时程法进行了结构地震作用效应计算。2种计算方法的联合分析表明,时程法在典型节点的位移计算结果与振型分解反应谱法在同位置的计算结果基本相同,振型分解反应谱法在典型节点的第一主应力计算结果略大于时程法在同位置的计算结果,因此,在抗震验算和配筋计算时,采用振型分解反应谱法的计算结果是合理、可靠的。塔式进水口的综合评价表明,塔体的应力、位移、抗滑稳定性、抗倾覆稳定性均能满足规范要求,塔体的综合抗震性能良好。本文的分析结果,可为同类工程的抗震分析计算提供参考。
According to the practical situation of intake tower whose side wall is thin and whose height of tower is high,the mode decomposition response spectrum and the elastic time-history method are used to calculate structural seismic action.A comprehensive analysis indicates that the displacement calculation result of the typical joint is almost the same as the result calculated by mode decomposition response spectrum and the result analyzed of the first principal stress by mode decomposition response spectrum is a little larger than the other method.So mode decomposition response spectrum is a proper and reliable method to calculate anti-seismic check and reinforcement calculation.A comprehensive evaluation of tower intake shows that the stress,displacement,stability of the sliding resistance and stability of the overturning resistance of tower meet the needs of the criteria.So the earthquake-resistant behavior of the tower is approved.The calculation results serve as a reference for similar projects.

引文

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