板柱節(jié)點(diǎn)擬靜力試驗(yàn)及板栓釘群外受沖切承載力計(jì)算方法
張揚(yáng)1，代偉明2，錢稼茹1，陶學(xué)康2
- 摘 要
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張揚(yáng)1，代偉明2，錢稼茹1，陶學(xué)康2（1 清華大學(xué)土木工程安全與耐久教育部重點(diǎn)試驗(yàn)室， 北京 100084；2 中國建筑科學(xué)研究院， 北京 100013）［摘要］針對(duì)板柱結(jié)構(gòu)中采用栓釘抗剪問題，進(jìn)行了兩個(gè)鋼筋混凝土板柱節(jié)點(diǎn)發(fā)生栓釘群外破壞的擬靜力試驗(yàn)。提出了板栓釘群外圓角沖切破壞輪廓線；并根據(jù)現(xiàn)有的試驗(yàn)結(jié)果，采用《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》(GB50010—2010)的非預(yù)應(yīng)力混凝土板受沖切承載力計(jì)算公式的形式，引入沖跨系數(shù)，提出了非預(yù)應(yīng)力混凝土板栓釘群外受沖切承載力計(jì)算公式。利用該公式計(jì)算得到受沖切承載力與發(fā)生沖切破壞板柱節(jié)點(diǎn)的試驗(yàn)結(jié)果吻合較好。［關(guān)鍵詞］板柱節(jié)點(diǎn)； 非預(yù)應(yīng)力混凝土板； 栓釘群外切沖破壞； 受沖切承載力中圖分類號(hào)：TU317, TU398+.1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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作者簡介：張揚(yáng)，博士，Email: ibrahim310041@gmail.com。參考文獻(xiàn)［1］程懋堃. 關(guān)于板柱結(jié)構(gòu)適用高度［J］. 建筑結(jié)構(gòu)學(xué)報(bào), 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 混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京: 中國建筑工業(yè)出版社, 2011.［6］JGJ 92—2004無粘結(jié)預(yù)應(yīng)力混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京: 中國建筑工業(yè)出版社, 2005.［7］代偉明, 劉子華. 板柱節(jié)點(diǎn)擬靜力試驗(yàn)的層間位移角與剪重比關(guān)系［J］. 工程抗震與加固改造, 2009, 31(2):6066.［8］舒兆發(fā). 配置受沖切栓釘?shù)幕炷涟逯B接的試驗(yàn)研究［J］. 建筑結(jié)構(gòu)學(xué)報(bào), 1999, 20(1):5058.［9］GBJ 10—89 混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京: 中國建筑工業(yè)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.
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