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(1 蘭州理工大學(xué)土木工程學(xué)院  730050； 2 蘇州科技學(xué)院土木系  215011)
【提要】  在對(duì)30層鋼框架進(jìn)行預(yù)設(shè)計(jì)的基礎(chǔ)上，選定梁柱栓焊連接試件進(jìn)行有限元分析。經(jīng)過對(duì)該連接試件及其節(jié)點(diǎn)域的滯回性能和應(yīng)力分布進(jìn)行有限元分析后得出，節(jié)點(diǎn)域具有非常穩(wěn)定的非線性變形能力和耗能能力，對(duì)連接的塑性轉(zhuǎn)動(dòng)能力貢獻(xiàn)較大。建議設(shè)計(jì)中允許節(jié)點(diǎn)域發(fā)生非線性變形，以降低對(duì)連接的塑性轉(zhuǎn)動(dòng)能力要求。節(jié)點(diǎn)域的剪應(yīng)力在節(jié)點(diǎn)域中心最高，向四角逐漸降低，節(jié)點(diǎn)域剪切屈服后，幾乎所有的柱軸力都轉(zhuǎn)移到柱翼緣上。建議設(shè)計(jì)時(shí)選用翼緣寬大的柱截面，以保證柱翼緣能夠承受因節(jié)點(diǎn)域剪切屈服而由柱腹板轉(zhuǎn)移的壓力。
【關(guān)鍵詞】  鋼框架  梁柱節(jié)點(diǎn)  節(jié)點(diǎn)域  有限元模型
Influence of Panel Zone on Performance of Rigid Beamcolumn Connections in Steel Frames/Wang Wanzhen1，Gu Qiang2，Wang Xiuli1(1 Lanzhou University of Science & Technology，Lanzhou 730050，China;2 University of Science & Technology of uzhou,Suzhou 215011,China)
Abstract:Based on the calculation results of a 30layer steel frame structure,a beamcolumn connection is chosen to be anayzed by FEM.The hysteresis performance and stress distribution of connection and panel zone calculated by FEM show that,panel zone has very steady nonlinear deformation capacity which improves the capacity of plastic rotation of connection significantly.The inelastic deformation in panel zone can be allowed in order to reduce the request for plastic rotation of the connection.The shear stress in panel zone is the highest in center and reduces towards corners.Almost all axis force in the column transfers to its flanges after shear yielding of panel zone.It is suggested that wide flange section should be selected in design to ensure flanges can endure the pressure transferred from column web.
Keywords:steel frame;beamcolumn connections;panel zone;finite element model