| 地震作用下核电站环行吊车动力响应特性的模拟分析 |
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| 引用本文： | 李守巨,王荣成,杜洪泽,王雨晴.地震作用下核电站环行吊车动力响应特性的模拟分析[J].西北地震学报,2021,43(4):903-908,929. |
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| 作者姓名： | 李守巨 王荣成 杜洪泽 王雨晴 |
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| 作者单位： | 大连理工大学 工业装备结构分析国家重点实验室，辽宁 大连 116024 |
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| 基金项目： | 国家重点基础研究发展计划“973”项目（2015CB057804）；国家自然科学基金（11572079）；工业装备结构分析国家重点实验室开放基金（S14206） |
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| 摘 要： | 为评估地震作用下核电站环行吊车的动力响应特性,建立一个包含安全壳的简化核环吊有限元模型,数值模拟其在调幅的El Centro地震波作用下的受力特性,计算核环吊的固有频率特性,其中1阶固有频率为2.44 Hz。研究表明,在规范地震荷载作用下核环吊大梁的强度满足规范要求。在典型的三向Los Angeles地震动作用下,大车轮子与环轨之间始终处于受压状态,没有发生跳轨现象;小车轮子与大车主梁之间始终处于受压状态,也没有发生跳轨现象。与安全壳基础输入地震波的峰值相比,核环吊大梁跨中和吊车小梁跨中最大垂直加速度分别增加了107%和126%。
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| 关 键 词： | 核环吊 地震作用 动力响应 跳轨 固有频率 |
| 收稿时间： | 2018/9/11 0:00:00 |
Simulation analysis of dynamic response of polar cranes in nuclear power plants under seismic action |
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| LI Shouju,WANG Rongcheng,DU Hongze,WANG Yuqing.Simulation analysis of dynamic response of polar cranes in nuclear power plants under seismic action[J].Northwestern Seismological Journal,2021,43(4):903-908,929. |
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| Authors: | LI Shouju WANG Rongcheng DU Hongze WANG Yuqing |
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| Institution: | State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, Liaoning, China |
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| Abstract: | To evaluate the dynamic response characteristics of polar cranes in nuclear power plants under earthquake, a simplified finite element model of polar crane with containment was established in this paper.Then the numerical simulation for seismic response of the model was carried out under the action of Los Angeles earthquake wave with adjusted amplitude.Natural frequencies of the polar crane were computed, and the first order frequency of polar crane fixed on containment wall is 2.44 Hz.The results showed that the strength of large girder of polar crane meets the standard requirement under seismic load of code.Under the action of typical three-directional Los Angeles earthquake, the gantry wheel and trolley wheel are always in compressive state, and there is no rail jump phenomenon.Compared with peak acceleration of input seismic wave on the basement of containment, the maximum vertical peak acceleration on mid-spans of large beam and small beam of polar crane increases by 107% and 126%, respectively. |
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| Keywords: | polar crane in nuclear power station seismic action dynamical response derail natural frequency |
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