- 摘 要
-
(1 蘇州科技大學(xué)江蘇省結(jié)構(gòu)工程重點(diǎn)實(shí)驗(yàn)室, 蘇州 215011;2 江蘇省建筑科學(xué)研究院有限公司, 南京 210008;3 南京審計(jì)大學(xué)江蘇省公共工程審計(jì)重點(diǎn)實(shí)驗(yàn)室, 南京 211815)
[摘要]圍繞偏心鋼筋混凝土框架的加固設(shè)計(jì)和抗震性能開展研究。首先,介紹了某公司多層生產(chǎn)車間的結(jié)構(gòu)特點(diǎn),并綜合利用增大截面、粘貼鋼板和粘貼FRP等方法進(jìn)行了結(jié)構(gòu)抗震加固設(shè)計(jì),驗(yàn)算了構(gòu)件截面;隨后,建立了結(jié)構(gòu)三維有限元模型,開展了動(dòng)力特性和彈性時(shí)程分析,探討結(jié)構(gòu)的偏心不規(guī)則情況;最后,進(jìn)行了結(jié)構(gòu)在遠(yuǎn)場(chǎng)和近場(chǎng)地震作用下的動(dòng)力彈塑性分析,對(duì)比分析了綜合加固方案對(duì)結(jié)構(gòu)抗震性能的改善和遠(yuǎn)、近場(chǎng)地震對(duì)多層偏心鋼筋混凝土框架抗震性能的影響。研究結(jié)果表明:該結(jié)構(gòu)近場(chǎng)地震工況下的響應(yīng)大于遠(yuǎn)場(chǎng)地震工況,罕遇地震作用下底層層間位移角在近場(chǎng)地震工況可達(dá)遠(yuǎn)場(chǎng)地震工況的3-8倍;所設(shè)計(jì)的加固方案有效提升了結(jié)構(gòu)抗震性能,罕遇地震作用下底層層間位移角平均減少75-9%。
[關(guān)鍵詞]偏心鋼筋混凝土框架; 加固設(shè)計(jì); 碳纖維; 近場(chǎng)地震; 抗震性能
中圖分類號(hào):TU352-1+1, TU3754文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2018)24-0103-08
Analysis on seismic performance of reinforced concrete frame without and with reinforcement subjected to near-field earthquake
Zhu Yanqing1, Chen Xin1, Sun Yong2, Yu Weigen2, Li Jiaqing2, Su Guanxing2, Xu Qingyang3
(1 Jiangsu Province Key Laboratory of Structure Engineering, Suzhou University of Science and Technology, Suzhou 215011, China; 2 Jiangsu Research Institute of Building Science Co.,Ltd., Nanjing 210008, China; 3 Jiangsu Province Key Laboratory of Public Project Audit, Nangjing Audit University, Nanjing 211815, China)
Abstract:The reinforcement design and seismic performance analysis of a asymmetric reinforced concrete frame were investigated. Firstly, the structure characteristics of a company′s multi-story production workshop was introduced, then the seismic reinforced design was conducted using the methods of enlarging sections, sticking steel plates and sticking FRP, and the sections of the components were verified. Secondly, a three-dimensional finite element mode of the structure was established, and both the dynamic characteristics and elastic time-histories analysis were carried to discuss the eccentric irregularity of the structure. Finally, the dynamic elastic-plastic analyses of the structure were conducted under both far-field and near-field earthquake, then the improvement of the seismic performance of the reinforced structure were analyzed, and the influence of far-field and near-field earthquakes on the seismic performance of the multi-story eccentric reinforced concrete frame were compared. The results show that the response of the structure under near-field earthquake is greater than that under far-field earthquake, and when subjected to the rare earthquake, the structure′s bottom story drift under near-field earthquake is 3-8 times that under far-field earthquake. The designed reinforced scheme has effectively improved the seismic performance of the structure and the average reduction of the bottom story drift is 75-9%.
Keywords:asymmetric reinforced concrete frame; reinforcement design; carbon fiber; near-field earthquake; seismic performance
*國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC0701600),國(guó)家自然科學(xué)基金(51408389),江蘇省自然科學(xué)基金(BK20161581, BK20181078),江蘇省“青藍(lán)工程”,江蘇省住房和城鄉(xiāng)建設(shè)廳節(jié)能減排專項(xiàng)(蘇財(cái)建【2017】131號(hào)),蘇州市市級(jí)建設(shè)科研項(xiàng)目(20189),江蘇省高校自然科學(xué)研究面上項(xiàng)目(14KJB560012)。
通訊作者:陳鑫,博士,副教授,Email:civil.chenxin@gmail.com。
- 下載地址
-
你還沒注冊(cè)?或者沒有登錄?這篇論文要求至少是本站的注冊(cè)會(huì)員才能閱讀!
如果你還沒注冊(cè),請(qǐng)趕緊點(diǎn)此注冊(cè)吧!
如果你已經(jīng)注冊(cè)但還沒登錄,請(qǐng)趕緊點(diǎn)此登錄吧!