自復(fù)位方鋼管混凝土框架—薄鋼板剪力墻結(jié)構(gòu)的水平邊緣構(gòu)件受力分析

王先鐵+周緒紅+劉立達+林麟琿

摘要：基于薄鋼板剪力墻在目標位移下充分屈服并形成拉力帶，對繞梁腹板銷軸轉(zhuǎn)動的自復(fù)位方鋼管混凝土框架-薄鋼板剪力墻結(jié)構(gòu)的水平邊緣構(gòu)件（中梁和頂梁）進行受力分析。分別對水平邊緣構(gòu)件在鋼絞線預(yù)應(yīng)力和薄鋼板剪力墻拉力帶作用下的受力進行分析，推導(dǎo)了鋼絞線在目標位移下的拉伸預(yù)應(yīng)力計算公式；基于薄鋼板剪力墻極限破壞形態(tài)，研究了薄鋼板剪力墻拉力帶產(chǎn)生的水平邊緣構(gòu)件端部的軸力和剪力；提出了水平邊緣構(gòu)件的彎矩、剪力及軸力計算公式，明確了水平邊緣構(gòu)件的內(nèi)力分布。結(jié)果表明：水平邊緣構(gòu)件內(nèi)力公式計算值與有限元分析值吻合較好，可為水平邊緣構(gòu)件的設(shè)計提供參考。

關(guān)鍵詞：自復(fù)位方鋼管混凝土框架；薄鋼板剪力墻；水平邊緣構(gòu)件；受力分析；內(nèi)力

中圖分類號：TU391 文獻標志碼：A

文章編號：1673-2049（2017）02-0001-09

Abstract： Based on the full yield of thin steel plate shear wall and the formation of tensile strip， force analysis was conducted for the horizontal boundary elements （middle beam and top beam） of self-centering concrete filled square steel tubular frame with thin steel plate shear walls， which rolled about the pin of the web. The forces of the horizontal boundary elements were studied under the pre-stressing of the strands and the tensile strip of the thin steel plate shear walls， respectively. The calculation formula of the tensile stress was derived under the target drift. Based on the ultimate failure mode of thin steel plate shear wall， the axial forces and shear forces of the horizontal boundary element in the ends were studied. The calculation formula of the bending moment， shear force and axial force of the horizontal boundary elements were proposed. The distribution of the internal force of the horizontal boundary element was defined. The results show that the calculation results of the formula agree well with the finite element results.

Key words： self-centering concrete filled square steel tubular frame； thin steel plate shear wall； horizontal boundary element； force analysis； internal force