| 软土地基核电厂房动力响应振动台试验 |
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| 引用本文： | 景立平,,张嘉辉,汪刚,陆新宇,吴凡,张建林.软土地基核电厂房动力响应振动台试验[J].世界地震工程,2022,38(3):010-18. |
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| 作者姓名： | 景立平 张嘉辉 汪刚 陆新宇 吴凡 张建林 |
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| 作者单位： | 1. 中国地震局工程力学研究所, 黑龙江 哈尔滨 150080;2. 防灾科技学院, 河北 三河 065201 |
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| 摘 要： | 为了分析软土地基－筏基础核电厂房结构地震反应规律和特征，利用地震模拟振动台开展了软土地基－筏基础－核电厂房动力相互作用问题的试验研究。分别进行了表面水平土体模型和表面凹陷土体模型的运动相互作用试验、地基土－筏基础－核电厂房振动台相互作用试验、核电厂房直接固定在振动台面上的刚性基底振动台试验。试验采用圆形叠层剪切模型箱，地基土模型为某工程场地的均匀粉质粘土，其剪切波速为213 m/s；核电厂房简化为3层框架剪力墙结构模型。试验输入波形为美国核电规范常用的RG1.60反应谱合成得到的人工地震动时程。振动台试验结果对比分析表明:土－结构体系中系统的振动周期和阻尼明显大于刚性基底下结构的振动周期和阻尼；相同地震作用下在土－结构动力相互作用体系中结构加速度明显小于刚性基底下的结构加速度反应；而位移明显大于刚性基底下结构的位移。本文的研究成果可为软土地基建立核岛厂房的适应研究提供参考。
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| 关 键 词： | 土－结构动力相互作用 振动台试验 核电结构 地震反应 动力特性 软土地基 |
Shaking table test of dynamic response of nuclear power plant on soft soil foundation |
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| JING Liping,' target="_blank" rel="external">,ZHANG Jiahui,WANG Gang,LU Xinyu,WU Fan,ZHANG Jianlin.Shaking table test of dynamic response of nuclear power plant on soft soil foundation[J].World Information On Earthquake Engineering,2022,38(3):010-18. |
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| Authors: | JING Liping " target="_blank">' target="_blank" rel="external"> ZHANG Jiahui WANG Gang LU Xinyu WU Fan ZHANG Jianlin |
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| Institution: | 1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, Heilongjiang, China;2. School of Disaster Prevention Science and Technology, Sanhe 065201, Hebei China |
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| Abstract: | In order to analyze the rule and characteristics of seismic response of nuclear power plant structure with soft soil foundation and raft foundation,an experimental study on dynamic interaction of soft soil foundation,raft foundation and nuclear power plant was carried out by using seismic simulation shaking table.The interaction tests of horizontal soil model and concave soil model were carried out respectively.Interaction test of foundation soil-raft foundation-shaking table of nuclear power plant;Shaking table test of rigid basement directly fixed on shaking table in nuclear power plant.The circular laminated shear model box was used in the test. The foundation soil model was uniform silted clay of an engineering site,and the shear wave velocity was 213 m/s.The nuclear power plant is simplified to a three-story frame shear wall structure model.The test input waveform is the man-made vibration time history synthesized by RG1.60 reaction spectrum commonly used in the NUCLEAR power code of the United States. The comparison and analysis of shaking table test results show that the vibration period and damping of soil-structure system are obviously larger than those of structure with rigid foundation.The acceleration of the soil-structure dynamic interaction system under the same seismic action is obviously less than that under the rigid foundation.The displacement is obviously greater than that of the structure with rigid substrate.The research results of this paper can provide reference for the adaptation study of nuclear island plant building on soft soil foundation. |
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| Keywords: | soil-structure dynamic interaction shaking table test Nuclear power structure seismic response dynamic characteristic soft soil foundation |
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