多層筒狀磚榫石墨結構振動臺試驗研究*
孔祥雄1，史鐵花1，程紹革1，孫立斌2，史力2，倪振松2
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(1 中國建筑科學研究院工程抗震研究所,北京 100013；2 清華大學核能與新能源技術研究院,北京 100084)[摘要] 為研究某多層筒狀石墨結構的動力響應規(guī)律，對3個不同邊界條件的模型進行了地震模擬振動臺試驗，通過白噪聲掃頻獲得了模型在不同階段的自振頻率；通過人工波激勵得到模型的加速度、位移等動力反應。依據(jù)試驗結果，討論了模型自振頻率的變化規(guī)律，討論了模型加速度放大系數(shù)及位移包絡曲線的分布規(guī)律，研究了不同邊界條件對模型動力反應結果的影響。[關鍵詞] 石墨堆結構;磚榫結構;邊界條件非線性;振動臺試驗;動力響應中圖分類號：TL351， TU317+.1 文獻標識碼：A 文章編號：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
