大跨結(jié)構(gòu)異型構(gòu)件設(shè)計
趙鵬飛
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趙鵬飛 (中國建筑科學(xué)研究院,北京 100013)
[摘要]異型截面目前在大跨結(jié)構(gòu)中被廣泛使用,如何科學(xué)合理地對其進(jìn)行設(shè)計已是一個很現(xiàn)實(shí)的問題。首先對異型截面進(jìn)行了分類。在《鋼結(jié)構(gòu)設(shè)計規(guī)范》(GB 50017—2003)對此沒有明確規(guī)定的情況下,在研究規(guī)范相應(yīng)公式來歷的基礎(chǔ)上,通過參考、套用規(guī)范公式并輔以有限元分析的方式,以封閉截面為對象,研究此類構(gòu)件驗(yàn)算問題。涉及強(qiáng)度、彎矩作用平面內(nèi)整體穩(wěn)定、彎矩作用平面外整體穩(wěn)定、局部穩(wěn)定等各方面的內(nèi)容。[關(guān)鍵詞]大跨結(jié)構(gòu);異型截面;強(qiáng)度;整體穩(wěn)定;局部穩(wěn)定中圖分類號:TU318.1 文獻(xiàn)標(biāo)識碼:A 文章編號:1002-848X(2013)02-0036-05Design on elements with irregular sections in large span structuresZhao Pengfei(China Academy of Building Research, Beijing 100013, China)Abstract: Due to the widespread use of the elements with irregular sections in large span structures, how to design such elements is becoming a problem needed to be solved. The irregular sections were classified at first. Based on the research of the corresponding formulas in Code for design of steel structures GB 50017—2003, how to check irregular closed sections was studied. By referencing these formulas with FEA analysis, the following problems were discussed, such as strength, out of plane and in plane overall stability under moments, local buckling and etc.Keywords: large span structure; irregular section; strength; overall stability; local buckling參考文獻(xiàn)[1] GB 50017—2003 鋼結(jié)構(gòu)設(shè)計規(guī)范[S].北京:中國計劃出版社,2003.[2] 趙鵬飛,董城, 劉明,等.采用變截面箱梁的單層網(wǎng)殼屋蓋結(jié)構(gòu)在天津西站的應(yīng)用[C]//第13屆空間結(jié)構(gòu)學(xué)術(shù)會議論文集.2010.[3] 趙鵬飛,EMMANUEL LIVADIOTTI,陽升,等. 青島北站站房屋蓋結(jié)構(gòu)體系研究[J]. 建筑結(jié)構(gòu)學(xué)報,2011,32(8):10-17.[4] 崔佳, 魏明鐘,趙熙元,等.鋼結(jié)構(gòu)設(shè)計規(guī)范理解與應(yīng)用[M].北京:中國建筑工業(yè)出版社,2004.[5] 李開禧,肖允徽. 逆算單元長度法計算單軸失穩(wěn)時鋼壓桿的臨界力[J]. 重慶建工學(xué)院學(xué)報,1982,8(4):31-37.[6] 李開禧, 魏明鐘. 鋼構(gòu)件穩(wěn)定[M]. 成都: 四川科技出版社,1988.[7] 中國建筑科學(xué)研究院. 天津西站工作報告[R]. 2010.[8] 王國周,瞿履謙. 鋼結(jié)構(gòu)原理與設(shè)計[M]. 北京:清華大學(xué)出版社,1993.
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