工字形钢筋混凝土剪力墙有效刚度研究
引用文献：
余磊 ，马佳星， 王银辉， 李兵. 工字形钢筋混凝土剪力墙有效刚度研究[J]. 建筑结构，2022，48（13）：112-119.
YU Lei ，MA Jiaxing， WANG Yinhui ，LI Bing. Study on effective stiffness of H-shaped reinforced concrete shear wall[J]. Building Structure，2022,48（13）：112-119.
摘要：工字形钢筋混凝土剪力墙因具有较高的承载力与刚度，被广泛运用于建筑结构抗震设计之中。有效刚度对于钢筋混凝土剪力墙的抗震性能有着重要影响。利用有限元软件DIANA对拟静力加载下工字形钢筋混凝土剪力墙进行研究，分析了翼缘宽度、轴压比、剪跨比、腹板纵筋强度、翼缘纵筋配筋率对有效刚度的影响。结果表明，工字形钢筋混凝土剪力墙的有效刚度折减系数随着翼缘宽度、腹板纵筋强度的增加而减小，随着轴压比、剪跨比的增大而增大，翼缘纵筋配筋率影响不大。提出了适用于工字形钢筋混凝土剪力墙有效刚度的计算公式，其计算结果贴合试验值，说明该公式准确度较高，可用于计算工字形钢筋混凝土剪力墙的有效刚度。
关键词：工字形钢筋混凝土剪力墙；有效刚度；DIANA；翼缘宽度；轴压比；剪跨比；腹板纵筋强度；翼缘纵筋配筋率
基金：浙江省自然科学基金/青年基金项目(LQ19E080008)。
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[4] 韩小雷，张垒，杨光，等.地震作用下中美规范RC结构层间位移角限值的对比研究[J].土木工程学报，2020,53(1):31-38.
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[8] PAULAY T,PRIESTLY M J N.Seismic design of reinforced concrete and masonry buildings[M].Hoboken:Wiley-Interscience,1992.
[9] FENWICK R,BULL D.What is the stiffness of reinforced concrete walls[J].SESOC Journal,2000,13(2):23-32.
[10] LI B,XIANG W Z.Effective stiffness of squat structural walls[J].Journal of Structural Engineering,2011,137(12):1470-1479.
[11] 黄远，胡晓芳，万雄伟，等.水平荷载作用下RC剪力墙有效刚度研究[J].湖南大学学报(自然科学版),2019,46(7):11-18.
[12] MA J X,LI B.Experimental and analytical studies on h-shaped reinforced concrete squat walls[J].ACI Structural Journal,2018,115(2),425-438.
[13] 柴舜，Diana10.1土木工程有限元分析[M].南京：南京大学出版社，2018.
[14] BARDA F,HANSON J M,CORLEY W G.Shear strength of low-rise walls with boundary elements[J].Special Publication,1977,53:149-202.
[15] SYNGE A J.Ductility of squat shear walls[M].Christchurch:University of Canterbury Library,1980.
[16] MO Y L,CHAN J.Behavior of reinforced-concrete-framed shear walls[J].Nuclear Engineering and Design,1996,166(1):55-68.
[17] PALERMO D,VECCHIO F J,SOLANKI H.Behavior of three-dimensional reinforced concrete shear walls[J].ACI Structural Journal,2002,99(1):81-89.
[18] FARVASHANY F E,FOSTER S J,RANGAN B V.Strength and deformation of high-strength concrete shear walls[J].ACI Structural Journal,2008,105(1):21-29.
[19] 蒋欢军，应勇，王斌，等.钢筋混凝土剪力墙构件地震损伤性能试验[J].建筑结构，2012,42(2):113-117.
[20] 傅剑平，姚佳琳，崔嘉仁，等.配置高强钢筋工字形截面剪力墙试件抗震抗剪性能试验与有限元分析[J].土木工程学报，2018,51(3):44-51,68.
[21] 韩小雷，林乐斌，季静，等.工字形钢筋混凝土剪力墙变形指标试验研究[J].土木工程学报，2018,51(9):26-36.
Study on effective stiffness of H-shaped reinforced concrete shear wall
Abstract: H-shaped reinforced concrete shear wall is widely used in seismic design of building structures, owning to the high bearing capacity and stiffness. The effective stiffness has an important effect on the seismic performance of reinforced concrete shear wall. The finite element software DIANA was used to study H-shaped reinforced concrete shear wall under quasi-static loading, and the effects of flange widths, axial load ratios, shear span ratios, stresses of vertical web reinforcement and vertical flange reinforcement ratios on effective stiffness were analyzed. The result show that the effective stiffness ratio of H-shaped structural walls decreases with the raise of flange width and stresses of vertical web reinforcement, and increases with the growth of axial load ratios and shear span ratios, and vertical flange reinforcement ratios has little effect. An equation was specifically developed for the effective stiffness of H-shaped structural walls, which showed a good agreement with experimental results, indicating that the formula has high accuracy and can be used to calculate the effective stiffness of H-shaped reinforced concrete shear walls.
Keywords: H-shaped reinforced concrete shear wall; effective stiffness; DIANA; flange width; axial load ratio; shear span ratio; stress of vertical web reinforcement; vertical flange reinforcement ratio
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