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COMPARATIVE ANALYSIS OF PUNCHING SHEAR CAPACITY FOR REINFORCED CONCRETE SLAB
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摘要: 主要对比中国规范(GB 500102010)、欧洲规范(EN 1992-1-1：2004)和美国规范(ACI 318-08)中关于钢筋混凝土板受冲切承载力的规定，并通过算例和试验数据对比分析了混凝土强度、荷载面积形状与尺寸、纵筋配筋率、抗冲切钢筋布置对各国规范冲切承载力的影响。根据国内外423个钢筋混凝土板对称冲切试验结果，对各国规范冲切承载力计算值与试验值进行对比，由于欧洲规范考虑纵筋配筋率对承载力的影响，计算结果较为合理且数值最高，中国则最低。Abstract: A comparison of the provisions for punching shear capacity calculations of reinforced concrete slab wasstudied based on China code(GB 50010 － 2010)，ACI 318 － 08 and EN 1992 － 1 － 1:2004． The effects of concretestrength，shape and dimensions of loading，longitudinal reinforcement ratio，reinforcement lagout on the punchingshear capacity were studied． According to experimental results of 423 specimens，calculated values and experimentalvalues of the punching shear capacity were compared and analyzed for different codes． The results indicate thatbecause of the consideration of longitudinal reinforcement ratios effect on punching failure capacity in Europe code，the calculated values of Europe code are more reasonable，and are the highest ones，and those by China code are thelowest ones．
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Key words:
- reinforced concrete slab /
- punching shear capacity /
- comparative analysis /
- code
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[2] ACI 31808,Building Code Requirements for Structural Concreteand Commentary[S]. GB 500102010 混凝土结构设计规范[S]. [3] EN 199212: 2004 Eurocode 2: Design of ConcreteStructures Part 1-1: General Rules and Rules for Buildings[S]. [4] 贡金鑫,魏巍巍,胡家顺.中美欧混凝土结构设计[M].北京:中国建筑工业出版社,2007: 76-79. [5] 刘文珽.钢筋混凝土异形柱－ 板柱结构设计理论研究[D].大连:大连理工大学,2003,11. [6] 韩菊红.钢筋混凝土四边简支整浇双向板抗剪性能试验研究[J].郑州工业大学学报,1995,16(1):29-37. [7] 林旭健.钢纤维高强混凝土板抗冲切受力性能研究[D].杭州:浙江大学,1999. [8] 陶学康,White R N.钢筋混凝土圆板冲切破坏的有限元法分析[J].土木工程学报,1986,19(2):1-14. [9] Leandro M.Trautwein,Punching Strength of Flat Slabs withUnbraced Shear Reinforcement [J].ACI Structural Journal,2011,108(2):197-205. [10] 李定国,舒兆发,余志斌.无抗冲切钢筋的钢筋混凝土板柱连接冲切强度的试验研究[J].湖南大学学报,1986,13 (3 ):23-35. -
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