常見填充墻豎向不均勻布置對框架結(jié)構(gòu)抗震性能的影響研究*
羅瑞1，唐曹明1,2，羅開海1,2，楊韜1,2
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(1 中國建筑科學研究院， 北京 100013； 2 住房和城鄉(xiāng)建設(shè)部防災(zāi)研究中心， 北京 100013)
［摘要］歷次震害調(diào)查表明，填充墻豎向不均勻布置會對框架結(jié)構(gòu)產(chǎn)生不利影響，而傳統(tǒng)設(shè)計方法并不能較好地考慮這些不利影響因素。基于OpenSees軟件，通過自編代碼建立了填充墻可自動退出計算的有限元模型，較真實地模擬了帶填充墻框架結(jié)構(gòu)在7條地震波作用下的反應(yīng)；并從結(jié)構(gòu)整體響應(yīng)、構(gòu)件內(nèi)力以及結(jié)構(gòu)破壞機制等方面比較全面地研究了填充墻豎向不均勻布置對框架結(jié)構(gòu)的不利影響。通過理論分析，提出了填充墻抗側(cè)移剛度的計算公式，揭示了這種不利影響的作用機理并提出改進方案，通過動力彈塑性時程分析驗證了改進方案的正確性和有效性。［關(guān)鍵詞］框架結(jié)構(gòu); 填充墻豎向不均勻布置; 動力彈塑性分析; 改進方案中圖分類號：TU375.4 文獻標識碼：A 文章編號：1002-848X(2016)03-0024-08
Research on the influence of the vertical irregularities of infilled wall on the seismic performance of frame structuresLuo Rui1, Tang Caoming1,2, Luo Kaihai1,2, Yang Tao1,2(1 China Academy of Building Research, Beijing 100013, China; 2 Disaster Prevention Research Center, Ministry of Housing and Urban-Rural Development, Beijing 100013, China)Abstract:The previous earthquake damage investigations show that vertical irregularities of infilled wall have adverse impact on the structure, and traditional design method can not consider this adverse impact very well. A finite element model was established based on OpenSees software to achieve automatically exit of the infilled wall by self-compiled codes. The model factually simulated the response of the frame structure with infilled wall under the actions of 7 earthquake waves. The adverse effects of vertical irregularities of infilled wall on the frame structure were comprehensively studied from perspectives of the overall structural response, member internal forces and structure failure mechanism. By theoretical analysis, the calculation formula was proposed to calculate lateral stiffness of infilled wall, and the mechanism of this adverse effect was revealed and improved scheme was proposed. Through dynamic elasto-plastic time-history analysis, the correctness and effectiveness of the improved scheme was verified.Keywords:frame structure; vertical irregularities of infilled wall; dynamic elasto-plastic analysis; improved scheme
*中國建筑科學研究院應(yīng)用基金項目(20120122330730044)。作者簡介：羅瑞，碩士研究生，Email：915583959@qq.com。
