板柱节点拟静力试验及板栓钉群外受冲切承载力计算方法
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张扬1，代伟明2，钱稼茹1，陶学康2（1 清华大学土木工程安全与耐久教育部重点试验室， 北京 100084；2 中国建筑科学研究院， 北京 100013）［摘要］针对板柱结构中采用栓钉抗剪问题，进行了两个钢筋混凝土板柱节点发生栓钉群外破坏的拟静力试验。提出了板栓钉群外圆角冲切破坏轮廓线；并根据现有的试验结果，采用《混凝土结构设计规范》(GB50010—2010)的非预应力混凝土板受冲切承载力计算公式的形式，引入冲跨系数，提出了非预应力混凝土板栓钉群外受冲切承载力计算公式。利用该公式计算得到受冲切承载力与发生冲切破坏板柱节点的试验结果吻合较好。［关键词］板柱节点； 非预应力混凝土板； 栓钉群外切冲破坏； 受冲切承载力中图分类号：TU317, TU398+.1文献标识码：A文章编号：1002848X(2013)12003904Quasistatic test of slabcolumn connections and calculating method ofpunching shear strength outside stud groupZhang Yang1, Dai Weiming2, Qian Jiaru1, Tao Xuekang2(1 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University,Beijing 100084, China; 2 China Academy of Building Research, Beijing 100013, China)Abstract:The quasistatic test of two slabcolumn connections, which punching shear failure of slab occurred outside the stud group, were introduced. An outline of punching shearcritical section outside the stud group was proposed. Based on the test results and related references, a formula, which took into consideration of punchingshear span factor and had the same form with the punching shear strength formula of concrete slab specified in Code for design of concrete structures（GB 50010—2010）, was recommended to calculate punching shear strength outside the stud group of slab. The punching shear strength obtained by using the formula is well consistent with that obtained by the test.Keywords:slabcolumn connection; nonprestress concrete slab; punching shear failure outside stud group; punching shear strength作者简介：张扬，博士，Email: ibrahim310041@gmail.com。参考文献［1］程懋堃. 关于板柱结构适用高度［J］. 建筑结构学报, 2003, 24(1): 16.［2］ACI 31805 Building code requirements for structural concrete and commentary［S］. 2005.［3］ACI 4212R07 Seismic design of punching shear reinforcement in flat plates［S］. 2007.［4］BS 81101 Structural use of concretepart I: Code of practice for design and construction［S］.1997.［5］GB 50010—2010 混凝土结构设计规范［S］. 北京: 中国建筑工业出版社, 2011.［6］JGJ 92—2004无粘结预应力混凝土结构技术规程［S］. 北京: 中国建筑工业出版社, 2005.［7］代伟明, 刘子华. 板柱节点拟静力试验的层间位移角与剪重比关系［J］. 工程抗震与加固改造, 2009, 31(2):6066.［8］舒兆发. 配置受冲切栓钉的混凝土板柱连接的试验研究［J］. 建筑结构学报, 1999, 20(1):5058.［9］GBJ 10—89 混凝土结构设计规范［S］. 北京: 中国建筑工业出版社,1989.［10］HALFEN Limited Company. HDB punching shear reinforcement［M］. 2002.［11］MOKHTAR A S, GHALI A, DILGER W H. Stud shear reinforcement for flat concrete plates ［J］. ACI Journal, Proceedings, 1976, 73(3): 676683.［12］SEIBLE F, GHALI A, DILGER W H. Preassembled shear reinforcing units for flat plates［J］. ACI Journal, Proceedings, 1980, 77(1): 2835.［13］ANDR H P. Zum tragverhalten von flachdecken mit dü belleislen, bewehrung im auflagerbereich［J］. Beston und Stahlbetonbau, 1981, 76: 5357.
