884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（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 江蘇省住房和城鄉(xiāng)建設(shè)廳，南京 210036）

［摘要］大量既有高層建筑采用了RC框架-剪力墻結(jié)構(gòu)體系，當(dāng)其面臨加固改造時(shí)，合理評(píng)估其抗震性能十分重要。圍繞既有RC框架-剪力墻結(jié)構(gòu)的混合抗震加固方案對(duì)結(jié)構(gòu)抗震性能和抗倒塌能力提升的定量分析展開(kāi)研究。首先，針對(duì)某酒店式公寓的加固改造工程，設(shè)計(jì)了粘貼碳纖維布和外包鋼板的混合抗震加固方案。然后，基于纖維單元、分層殼單元以及GPU/CPU并行運(yùn)算技術(shù)，對(duì)加固前后結(jié)構(gòu)抗震性能和可恢復(fù)性能進(jìn)行了評(píng)估。最后，開(kāi)展了易損性分析，定量評(píng)價(jià)了結(jié)構(gòu)加固前后的抗倒塌能力，并對(duì)比了近、遠(yuǎn)場(chǎng)地震動(dòng)記錄對(duì)結(jié)構(gòu)抗倒塌能力評(píng)價(jià)結(jié)果的影響。結(jié)果表明：PGA=1g時(shí)，加固后可使得既有RC框架-剪力墻結(jié)構(gòu)在近場(chǎng)地震、遠(yuǎn)場(chǎng)作用下的倒塌概率分別下降至9.09%，2.27%，分別為加固前的1/4.63，1/4。

［關(guān)鍵詞］RC框架-剪力墻結(jié)構(gòu)；碳纖維布加固；外包鋼加固；分層殼單元；易損性分析；抗震性能評(píng)估

中圖分類號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)10-0084-08

Fragility analysis of existing RC frame-shear wall structures with mixed seismic reinforcement in high intensity zone

QIAO Jian1, CHEN Xin1, YU Weigen2, LIU Tao3, SUN Yong2, ZHU Yanqing2

(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 Department of Housing and Urban-rural Development of Jiangsu Province, Nanjing 210036, China)

Abstract:A large number of existing high-rise buildings adopt RC frame-shear wall structure system. When they are facing reinforcement and transformation, it is very important to evaluate their seismic performance reasonably.  Around the existing RC frame-shear wall structure of hybrid seismic reinforcement scheme, the quantitative analysis of structural seismic performance and anti-collapse ability was carried out. First of all, for the reinforcement and reconstruction project of a hotel apartment, a hybrid seismic reinforcement scheme of pasting carbon fiber cloth and outsourcing steel plate was designed. Then, based on fiber element, layered shell element and GPU/CPU parallel computing technology, the seismic performance and recovery possibility of the structure before and after reinforcement were evaluated. Finally, the structural fragility analysis  was carried out, and the anti-collapse ability of the structure before and after reinforcement was quantitatively evaluated, and the influence of near-field and far-field seismic records on the evaluation results of the anti-collapse ability of the structure was compared. The results show that, when PGA=1g, after reinforcement, the collapse probability of existing RC frame-shear wall structures under near-field earthquake and far-field earthquake can be reduced to 9.09% and 2.27%, which is only 1/4.63 and 1/4 before reinforcement.

Keywords:reinforced concrete frame-shear wall structure;carbon fiber cloth  reinforcement;outer steel reinforcement;layered shell element;fragility analysis;seismic performance evaluation

*江蘇省自然科學(xué)基金（BK20161581），江蘇省六大人才高峰（JZ004），江蘇省“333”工程科研項(xiàng)目（BRA2018372），江蘇省高等學(xué)校自然科學(xué)研究重大項(xiàng)目（19KJA430019）。

作者簡(jiǎn)介：?jiǎn)虅?，碩士，Email：252797566@qq.com；通信作者：俞偉根，博士，研究員級(jí)高級(jí)工程師，Email：yuweigen@126.com。