底層大空間-單跨框架學(xué)校建筑的抗震加固分析與設(shè)計(jì)
陳兆榮1,2，羅盛宗1，2，潘東輝3
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（1 深圳市力鵬工程結(jié)構(gòu)技術(shù)有限公司， 深圳 518034； 2 深圳市力鵬建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所， 深圳 518034； 3 東莞理工學(xué)院， 東莞 523808）
［摘要］國(guó)內(nèi)城鎮(zhèn)原來的中小學(xué)教學(xué)樓多采用底層大空間-單跨框架結(jié)構(gòu)，由于單跨框架結(jié)構(gòu)的抗震性能較差，加之設(shè)計(jì)時(shí)未考慮上部樓層填充墻的剛度影響，地震時(shí)結(jié)構(gòu)底層往往發(fā)生嚴(yán)重的破壞現(xiàn)象。針對(duì)該類型結(jié)構(gòu)對(duì)填充墻的影響進(jìn)行了討論，給出了在剛性連接中相同條件的填充墻換算鋼筋混凝土剪力墻的估算方法。結(jié)合某工程案例，通過MIDAS/Gen分析了不考慮和考慮填充墻貢獻(xiàn)兩種情況下結(jié)構(gòu)的側(cè)向剛度和自振周期等結(jié)構(gòu)特性，針對(duì)性地提出增設(shè)鋼筋混凝土剪力墻的加固方案，利用剛度差反算所需要增加的剪力墻用量，加固效果較為良好。［關(guān)鍵詞］底層大空間-單跨框架結(jié)構(gòu); 抗震性能; 側(cè)向不規(guī)則; 剪力墻中圖分類號(hào)：TU318 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)09-0090-05
Analysis and design of seismic retrofit on the singlespan frame with large space ground floor of school buildingChen Zhaorong1,2, Luo Shengzong1,2, Pan Donghui3（1 Shenzhen Li Peng Structural Engineering Technology Co., Ltd., Shenzhen 518034, China; 2 Shenzhen Li Peng Building Structure Design Institute, Shenzhen 518034, China; 3 Dongguan University of Technology, Dongguan 523808, China）Abstract: The single-span frame structure with large space ground floor is widely applied in the domestic urban middle and primary school buildings. Because the seismic performance is poor for single-span frame structure and the stiffness contribution of the upper floors' infilled wall is not considered in design, severedamage phenomenon often occurs in the ground floor of the structure under earthquake. The effect of this kind of structure on the infilled wall was discussed. The estimation method for infilled wall conversion to shear wall in the same condition with rigid connection was provided. Combined with project engineering, MIDAS/Gen software was used to analyze the structural characteristics including lateral stiffness and natural period in two cases where the contribution of infilled wall was considered or not. The retrofitting plan of increasing reinforced concrete shear wall was proposed pointedly. The stiffness difference was used to calculate need dosage for increased shear wall. The result shows that the retrofitting effect is well.Keywords: single-span frame structure with large space ground floor; seismic performance; lateral irregular; shear wall
作者簡(jiǎn)介：陳兆榮，碩士，Email：chenzhaorong1987@126.com。
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