鋼結(jié)構(gòu)二階分析設(shè)計(jì)方法及其應(yīng)用*
舒贛平1,謝甫哲2,劉偉1
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(1 東南大學(xué)土木工程學(xué)院, 南京 210096; 2 江蘇大學(xué)土木工程與力學(xué)學(xué)院, 鎮(zhèn)江 212013)
[摘要]對(duì)兩個(gè)6層鋼框架結(jié)構(gòu)進(jìn)行了一階彈性、二階彈性和二階彈塑性分析,對(duì)比分析了三種方法的設(shè)計(jì)結(jié)果,考察了《鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范》(送審稿)中的二階分析設(shè)計(jì)方法的可操作性以及與一階分析設(shè)計(jì)結(jié)果的一致性。結(jié)果表明:一階分析設(shè)計(jì)方法和二階分析設(shè)計(jì)方法在桿件承載能力方面的設(shè)計(jì)結(jié)果基本一致,但位移方面的分析結(jié)果差距較大,建議分別設(shè)置一階分析和二階分析的位移限值;二階分析設(shè)計(jì)方法中兩種缺陷取值方法得到的設(shè)計(jì)結(jié)果基本一致;《鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范》(送審稿)對(duì)于結(jié)構(gòu)二階分析設(shè)計(jì)方法的規(guī)定具有較強(qiáng)的可操作性。[關(guān)鍵詞]鋼結(jié)構(gòu); 二階分析設(shè)計(jì); 一階分析設(shè)計(jì); 初始缺陷中圖分類號(hào):TU391 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1002-848X(2015)21-0030-05
Application of the second-order analysis and design method of steel structuresShu Ganping1, Xie Fuzhe2, Liu Wei1(1 Department of Civil Engineering, Southeast University, Nanjing 210096, China; 2 Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)Abstract: Two steel frames with 6 stories were respectively analyzed by firstorder elastic method, second-order elastic method and second-order elasto-plastic method, and the results were compared. The operability of second-order analysis and design method of Code for design of steel structures draft and the consistency with first-order analysis and design method were investigated. The results indicate that the capacity design results respectively obtained by the second-order analysis and design method and the first-order analysis and design method are identical, while the lateral displacement results are quite different. It is recommended that the lateral displacement limits of first-order and secondorder analysis should be respectively set. The second-order analysis and design results respectively obtained by the two initial imperfection definition methods are identical. The second-order analysis and design methods in the Code for design of steel structures draft have better operability.Keywords: steel structure; second-order analysis and design; first-order analysis and design; initial imperfection
*國(guó)家自然科學(xué)基金資助項(xiàng)目(51178098),江蘇大學(xué)高級(jí)人才基金資助項(xiàng)目。作者簡(jiǎn)介:舒贛平,博士,教授,博士生導(dǎo)師,Email:sgp0818@vip.sina.com。
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