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（1 天津大學(xué)建筑工程學(xué)院， 天津 300072； 2 濱海土木工程結(jié)構(gòu)與安全教育部重點(diǎn)實(shí)驗(yàn)室(天津大學(xué))， 天津  300072； 3 中國(guó)中材國(guó)際工程股份有限公司天津分公司， 天津 300400）

［摘要］水泥窯尾預(yù)熱器塔架是新型干法水泥生產(chǎn)線的標(biāo)志性建筑，由于荷載條件的不同以及工藝和設(shè)備安裝的限制，窯尾塔架所采用的中心支撐鋼框架結(jié)構(gòu)具有不同于普通民用高層鋼結(jié)構(gòu)的特點(diǎn)。依據(jù)歐洲抗震設(shè)計(jì)規(guī)范，給出了中心支撐鋼框架結(jié)構(gòu)延性抗震設(shè)計(jì)流程，按規(guī)范建議選取結(jié)構(gòu)性能系數(shù)，對(duì)某水泥窯尾預(yù)熱器塔架進(jìn)行了延性抗震設(shè)計(jì)。結(jié)果表明，考慮結(jié)構(gòu)延性顯著地降低了設(shè)計(jì)地震作用，水泥窯尾預(yù)熱器塔架結(jié)構(gòu)設(shè)計(jì)更為經(jīng)濟(jì)?；谕聘卜治龇椒▽?duì)所設(shè)計(jì)的水泥窯尾預(yù)熱器塔架的延性性能進(jìn)行了評(píng)估，計(jì)算得到的結(jié)構(gòu)性能系數(shù)均略大于歐洲抗震設(shè)計(jì)規(guī)范給出的結(jié)構(gòu)性能系數(shù)的建議值，驗(yàn)證了歐洲抗震設(shè)計(jì)規(guī)范相關(guān)條款對(duì)水泥窯尾預(yù)熱器塔架及類似工業(yè)建筑延性抗震設(shè)計(jì)的適用性和合理性。

［關(guān)鍵詞］水泥窯尾預(yù)熱器塔架； 延性抗震設(shè)計(jì)； 性能系數(shù)； 推覆分析； 延性評(píng)估

中圖分類號(hào)：TU393-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)01-0063-06

Ductility-based seismic design method and ductility evaluation for pre-heater tower of cement kiln

Yin Yue1,2， Li Jinlong1， Feng Xing1， Li Shun3

（1 School of Civil Engineering, Tianjin University, Tianjin 300072, China； 2 Key Laboratory of Coastal Civil Engineering Structure and Safety of Ministry of Education, Tianjin University, Tianjin 300072, China;3 Sinoma International Engineering (Tianjin) Co., Ltd., Tianjin 300400, China)

Abstract:Pre-heater tower of cement kiln is the landmark structure of the new-style dry process cement production line. Due to special loading conditions and limits by technical requirements and equipment layout, concentric braced steel frames for pre-heater tower have different structural behaviour from common civil high-rise buildings.  According to related provisions in  European Code for seismic design ductility-based scismic design procedure of  concentric braced steel frame structure was designed for a pre-heater tower based on the suggested values for behaviour factor in  European Code for seismic design. It was shown that design earthquake action was significantly reduced by considering structure ductility and more economical design was obtained. The ductility of the obtained concentric braced steel frame structure was evaluated by pushover analysis. The behaviour factors calculated were all a little larger than the corresponding values suggested in  European Code for seismic design, which verified the applicability and rationality of Eurocode 8 to the ductility-based seismic design of pre-heater towers and similar industrial high-rise steel structures.

Keywords:pre-heater tower of cement kiln; ductility-based seismic design;  behavior factor; pushover analysis; ductility evaluation