多层筒状砖榫石墨结构振动台试验研究*
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(1 中国建筑科学研究院工程抗震研究所,北京 100013；2 清华大学核能与新能源技术研究院,北京 100084)[摘要] 为研究某多层筒状石墨结构的动力响应规律，对3个不同边界条件的模型进行了地震模拟振动台试验，通过白噪声扫频获得了模型在不同阶段的自振频率；通过人工波激励得到模型的加速度、位移等动力反应。依据试验结果，讨论了模型自振频率的变化规律，讨论了模型加速度放大系数及位移包络曲线的分布规律，研究了不同边界条件对模型动力反应结果的影响。[关键词] 石墨堆结构;砖榫结构;边界条件非线性;振动台试验;动力响应中图分类号：TL351， TU317+.1 文献标识码：A 文章编号：1002-848X(2013)S1-0599-04Study on shaking table test of a multi-story cylindrical graphite dowel-socket structureKong Xiangxiong1, Shi Tiehua1, Cheng Shaoge1, Sun Libin2, Shi Li2, Ni Zhensong2(1 Institute of Earthquake Engineering, China Academy of Building Research, Beijing 100013, China; 2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China)Abstract: In order to study the dynamic response of a multi-story cylindrical graphite dowel-socket structure, a model with 3 different boundary conditions were test by shaking table. The natural frequency and mode shapes of the model were gained by using white noise sweep method, and the model acceleration and deformation responses of results were also gained by using artificial ground motion. The model natural frequency results, amplificatory factors of model acceleration response, model displacement envelope results, the influence of different boundary conditions were done and discussed in this paper.Keywords: graphite core structure; dowel-socket structure; nonlinear boundary conditions; shaking table test; dynamic response
