- 摘 要
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(1 西安建筑科技大學(xué)土木工程學(xué)院，710055； 2 中國建筑西北設(shè)計研究院，西安710003）
［提要］分析了鋼板墻從彈性屈曲到拉力帶全部屈服的受力全過程。在彈性屈曲階段，引入了彈性嵌固系數(shù)以考慮框架約束的影響。在彈塑性階段，考慮了拉力帶傾角、塑性變形系數(shù)和屈服后階段彈性模量折減等影響，用斜拉桿模型合理地模擬了拉力帶的受力過程，推導(dǎo)了斜拉桿初始屈服應(yīng)力、極限應(yīng)力、鋼板墻剪力和位移計算公式。分別計算了鋼板和純框架的單獨作用，然后再考慮其組合作用，得到了鋼板墻的彈塑性荷載位移曲線，通過算例驗證了公式的有效性。
［關(guān)鍵詞］鋼板剪力墻；屈曲后強度；拉力帶；斜拉桿模型Elastoplastic Analysis of Steel Plate Shear Walls/Cao Chunhua1， Hao Jiping1，Yang Li2, Wang Yingchun1，Li Feng1(1 Xi"an University of Architecture & Technology, Xi"an 710055,China; 2 China Northwest Building Design and Research Institute, Xi"an 710003,China)
Abstract:A full shear resisting process of steel plate shear wall, which is developed from elastic buckling to the yielding of tension field formed in the panel,is investigated. At the elastic buckling stress stage, an amplified coefficient is introduced to evaluate the anchor effect of the surrounding frame. At the elastoplastic stress stage, the action of tension field is simulated reasonably by the strip model including the effects of the angle of tension field, plastic deformation factor and postinitial yielding behavior modulus etc. The formulas of initial yielding stress and ultimate stress of strip, the shear and displacement at different stress stages for panels are conducted. The action of the panel and steel frame is considered separately, and their interaction is taken into account. The loaddisplacement curve for steel plate shear walls at different stages is obtained. The effectiveness of the method is demonstrated by comparing the predicted response with results from test.
Keywords:steel plate shear walls; post buckling strength; tensile field; dia
