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钢板外包钢筋混凝土组合剪力墙侧向刚度大、延性好,是一种有效的抗侧力构件。薄钢板墙两侧或单侧的钢筋混凝土板通过焊接栓钉和粘结作用与钢板共同工作。混凝土板旨在防止钢板受剪屈服前发生整体屈曲或局部屈曲,外包混凝土板厚度的确定是组合钢板剪力墙设计的关键。采用有限元法对组合墙板进行了弹性屈曲分析;采用薄板理论建立了组合剪力墙屈曲强度简化计算公式;讨论了板边界条件、混凝土板高厚比、钢板高厚比、混凝土弹性模量及板高宽比对有限元计算与简化公式计算结果间差异的影响;基于简化公式和有限元计算结果提出了组合钢板剪力墙弹性屈曲强度计算公式,可用于确定外包混凝土板厚度需求。
The steel plate outsourcing reinforced concrete composite shear wall has large lateral stiffness and good ductility, and is an effective anti-lateral force component. The reinforced concrete slabs on both sides or on one side of the sheet steel wall work together with the steel sheet by means of welding studs and bonding. The concrete slab is designed to prevent the overall buckling or local buckling of the steel plate before shear yield. The determination of the thickness of the outer slab is the key to the design of the composite steel plate shear wall. The finite element method was used to analyze the elastic buckling of the composite wallboard. The simplified calculation formula of the buckling strength of the composite shear wall was established by using the thin plate theory. The board boundary conditions, the ratio of the height to the thickness of the concrete slab, the ratio of the height to the thickness of the steel plate, and the elastic modulus of the concrete were discussed. The influence of the ratio of height to width on the difference between the calculation results of the finite element calculation and the simplified formula is given. Based on the simplified formula and the finite element calculation results, the formula for calculating the elastic buckling strength of the combined steel plate shear wall is proposed, which can be used to determine the thickness requirements of the outer slab.