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    趙  勇¹    李云貴²    黃鼎業(yè)¹
    （1 同濟(jì)大學(xué)預(yù)應(yīng)力研究所  上海 200092； 2 中國建筑科學(xué)研究院  北京 100013）

[提要]  在規(guī)范GB50010-2002基本規(guī)定的基礎(chǔ)上，展開板柱節(jié)點(diǎn)受沖切承載力計(jì)算方法的討論。提出的計(jì)算公式是對(duì)規(guī)范公式的補(bǔ)充，特別是對(duì)于非主軸坐標(biāo)下不平衡彎矩在臨界截面上產(chǎn)生的最大剪應(yīng)力的計(jì)算方法，可應(yīng)用到任意多邊形的臨界截面中。該法力學(xué)概念明確、適用范圍廣，其計(jì)算結(jié)果與試驗(yàn)值吻合較好。
[關(guān)鍵詞]  沖切承載力  臨界截面  名義剪應(yīng)力法  混凝土板  板柱節(jié)點(diǎn)  不平衡彎矩

A calculating method for punching shear strength of slab-column connection transferring shear and unbalanced bending moment, which satisfies the requirement of the GB50010-2002 code, is presented in detail. Especially, the formulae to calculate the nominal maximum shear stress of rectangle or non-rectangle critical sections with non-principle axes are the supplements of code. The method is clear in mechanical concept and has wide application range. The calculated results agree well with the tested results.
Keywords:  punching shear strength; critical section; nominal shear stress method; concrete slab; slab-column connection; unbalanced bending moment