豎向槽鋼加勁鋼板剪力墻軸壓屈曲*
陶文登1，童根樹1,2，干鋼2，沈金2
- 摘 要
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陶文登1，童根樹1,2，干鋼2，沈金2(1 浙江大學(xué)建筑工程學(xué)院， 杭州 310058； 2 浙江大學(xué)建筑設(shè)計研究院， 杭州 310028）［摘要］對僅設(shè)置多道豎向槽鋼加勁肋的鋼板剪力墻承受軸向壓應(yīng)力的情況，進(jìn)行了大量有限元彈性屈曲分析，得到了軸向壓應(yīng)力隨加勁肋抗彎剛度和加勁肋抗扭剛度變化的曲線，以及加勁板的臨界應(yīng)力等于小區(qū)格按簡支計算的軸壓屈曲臨界應(yīng)力條件下加勁肋雙面布置時加勁肋的門檻剛度。在加勁肋剛度小于門檻剛度時給出了鋼板剪力墻彈性軸壓屈曲臨界應(yīng)力與加勁肋剛度的關(guān)系。將雙面加勁同單面加勁、交錯加勁兩種情況進(jìn)行比較，得出了后兩者的門檻剛度放大系數(shù)。與數(shù)值計算結(jié)果的比較表明，公式具有良好的精度，并且公式結(jié)果均在安全一側(cè)。［關(guān)鍵詞］鋼板剪力墻； 軸向壓應(yīng)力； 加勁肋； 門檻剛度； 彈性屈曲中圖分類號：TU392.4 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2013)15-0037-07Elastic buckling of steel shear walls vertically stiffened by channels under axial compressionTao Wendeng1, Tong Genshu1,2, Gan Gang2, Shen Jin2(1 Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China; 2 Architecture Design and Research Institute of Zhejiang University, Hangzhou 310028, China)Abstract: The elastic buckling of steel plate shear walls vertically stiffened by channels is investigated under axial compression, and the curves of relating axial compressive buckling stresses to flexural and torsional rigidities of stiffeners are presented. Threshold rigidities are presented on stiffeners determined by the demand that the critical axial compressive stresses be equal to the buckling stress of simply supported sub-panel. In case that the rigidities of stiffeners are less than the threshold stiffness, a formula is proposed relating the buckling stress to the rigidities of stiffeners. Plates stiffened by channels on one side or stiffened by channels on one side alternately on both sides of the plate are analyzed, and compared with both sides stiffeners. Modification factor is proposed for the threshold stiffness.Keywords: steel plate shear wall; axial compressive stress; channel; stiffener; threshold stiffness; elastic buckling通訊作者：童根樹，工學(xué)博士，教授，博導(dǎo)，Email:tonggenshu@126.com。參考文獻(xiàn)［1］TIMLER P A, KULAK G L. Experimental study of steel plate shear walls ［R］. Struct. Eng. Rep. No. 114, Department of Civil Engineering, University of Alberta, Edmonton, Alberta, Canada,1983.［2］TROMPOSCH E W, KULAK G L. Cyclic and static behavior of thin panel steel plate shear walls［R］. Struct. Eng. Rep.No.145, Department of Civil Engineering, University of Alberta, Edmonton, Alberta, Canada, Apr,1987.［3］SABOURI-GHOMI S, VENTURA C E, KHARRAZI M H K. Shear analysis and design of ductile steel plate walls［J］.Journal of Structural Engineering,2005,131(6):878-889.［4］GEOFREY L K, LAURIE D J, ROBERT KENNEDY. Steel plate shear walls-an overview ［J］. Engineering Journal, 2001, 38(1): 50-62.［5］郭彥林，陳國棟，繆友武. 加勁鋼板剪力墻彈性抗剪屈曲性能研究［J］. 工程力學(xué)，2006，23(2)：84-91，59.［6］陳國棟，郭彥林，范珍. 鋼板剪力墻低周反復(fù)荷載試驗研究［J］. 建筑結(jié)構(gòu)學(xué)報，2004，25(2)：19-26，59.［7］侯蕾，郝際平，董子建. 十字加勁肋鋼板剪力墻低周反復(fù)荷載的試驗［J］. 鋼結(jié)構(gòu)，2006，21(2)：12-16，85.［8］SOHL G A, BOBROW J E. A recursive multibody dynamics and sensitivity algorithm for branched kinematic chains［J］. Journal of Cryptology, 2001, 123(3): 391-399.［9］趙偉，楊強躍，童根樹. 鋼板剪力墻加勁肋剛度及彈性臨界應(yīng)力研究［J］. 工程力學(xué)，2010，27(6)：15-23.［10］任濤. 工字梁腹板在局部承壓和建立作用下的彈性屈曲及極限承載力［D］. 杭州：浙江大學(xué)，2005.［11］TIMOSHENKO S P, GERE J M. Theory of elastic stability［M］.2nd Ed. New York: McGraw-Hill,1963.［12］童根樹. 鋼結(jié)構(gòu)的平面外穩(wěn)定［M］. 北京：中國建筑工業(yè)出版社，2007.
