雙重抗側(cè)力體系的彈性穩(wěn)定分析
曹志毅1,胡進(jìn)秀2,童根樹3
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(1 浙江大學(xué)建筑設(shè)計(jì)研究院,杭州 310027;2 杭州中宇建筑設(shè)計(jì)有限公司,杭州 310004;3 浙江大學(xué)土木系,杭州 310027)[摘要]采用連續(xù)的懸臂梁模型,對彎曲型支撐框架體系的彈性穩(wěn)定進(jìn)行研究,得出了體系有側(cè)移失穩(wěn)的臨界荷載公式。在此基礎(chǔ)上分析并提出了彎剪型支撐雙重抗側(cè)力體系的臨界荷載公式,并與有限元方法結(jié)果進(jìn)行對比,所得公式精度良好。提出的公式對工程實(shí)際應(yīng)用具有參考意義。[關(guān)鍵詞]框架;支撐;彈性穩(wěn)定;抗側(cè)剛度;二階效應(yīng);臨界荷載;有限元Elastic stability analysis of dual systemsCao Zhiyi1,Hu Jinxiu2,Tong Genshu3(1 Architectural Design & Research Institute,Zhejiang University,Hangzhou 310027,China;2 Hangzhou Centreland Design Consultant Co.,Ltd.,Hangzhou 310004,China;3 Civil Engineering College,Zhejiang University,Hangzhou 310027,China)Abstract:It investigates the elastic stability of the frame-shearwall structure in a vertical column, and the critical load of dual systems is proposed. Then the formula is extended to the dual system of flexural——shear typed bracing. Comparison with the results of FEM shows a good correlation between them. The proposed formula can be used for designing in practice.Keywords:frame;bracing;plastic stability;lateral stiffness;second-order effects;critical load;FEM作者簡介:曹志毅,碩士,Email:cao3079@126.com。參考文獻(xiàn)[1]季淵. 彎曲型支撐框架結(jié)構(gòu)的臨界荷載與臨界支撐剛度研究[J].浙江大學(xué)學(xué)報(bào)(工業(yè)版),2002,36(5).[2]B S史密斯,A 庫爾. 高層建筑結(jié)構(gòu)分析與設(shè)計(jì)[M]∥陳瑜,等譯.北京:地震出版社,1993.[3]胡進(jìn)秀,童根樹. 彎曲型支撐體系框架柱的彎矩放大系數(shù)及整體臨界荷載研究[J].建筑結(jié)構(gòu),2006,36(S1).[4]ROSENBLUETH E, HOLTZ I. Elastic analysis of shear wall in tall building[J]. ACJJ,1960,56(12):1209-1222.[5]KHAN F R, SBAROUNIS J A. Interaction of shear walls and frames[J].J.Struct Div ASCE,1964,90(3):285-335.[6]ROSMAN R. Stability and dynamics of shear-wall frame structures[J].Build.Sci.,1974,9:55-63.
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