組合板縱向抗剪承載能力的簡化計(jì)算方法
史曉宇
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（上海建筑設(shè)計(jì)研究院有限公司， 上海 200041）
［摘要］壓型鋼板與混凝土界面的縱向剪切-粘結(jié)破壞是控制組合板承載能力的破壞方式。在試驗(yàn)研究和有限元分析的基礎(chǔ)之上，基于歐洲規(guī)范的部分連接法，引入代表抗剪連接程度的折減系數(shù)η，提出了簡支壓型鋼板-混凝土組合樓板縱向抗剪承載能力的簡化計(jì)算方法；針對(duì)組合板中最為常用的抗剪栓釘?shù)亩瞬垮^固形式，通過試驗(yàn)研究和有限元參數(shù)分析，再與各國規(guī)范的比較和討論，考慮了栓釘尺寸和數(shù)量、混凝土強(qiáng)度和彈性模量、組合板荷載分布和尺寸等因素，提出了端部錨固組合板剪切-粘結(jié)破壞時(shí)承載能力的改進(jìn)計(jì)算方法。簡化計(jì)算方法可用于具有不同幾何形狀、壓紋類型和荷載分布情況的組合板。采用簡化計(jì)算方法得到的結(jié)果與不同研究者的試驗(yàn)結(jié)果對(duì)比后顯示出較好的一致性，可供工程設(shè)計(jì)參考。［關(guān)鍵詞］組合板; 剪切-粘結(jié); 接觸分析; 端部錨固栓釘; 計(jì)算方法中圖分類號(hào)：TU398+.9 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)07-0074-08
Simplified calculation method for longitudinal shear capacity of composite slabsShi Xiaoyu（Shanghai Institute of Architectural Design and Research Co., Ltd., Shanghai 200041, China）Abstract: The load carrying capacities of composite slabs with profiled steel sheeting are governed by the longitudinal shear-bond strength of the surface between the concrete and the steel deck. According to previous experimental study and finite element analysis, based on the partial connection (PSC) method in European codes, the reduction coefficient η was introduced to represent the degree of shear connection, and a simplified method was proposed to calculate the longitudinal shear capacity of simply-supported composite slabs with steel plates and concrete. For the most popular end anchorage form in shear studs in composite slabs, the results of experimental study and parametric studies by finite element method were compared and discussed with current design specifications of different countries, and then an improved calculation method was proposed for bearing capacity of the end anchor composite slab in shear bond failure, considering the dimensions and amounts of studs, strength and elastic modules of concrete, load distributions and dimensions of composite slabs in this method. The simplified method can be used for composite slabswith various geometric shapes, embossment conditions and load distributions. Comparisons of the experimental results from different researchers and the calculated results indicate that the simplified calculation method agrees well with the experimental result, which can provide reference for engineering design.Keywords: composite slab; shear-bond; contact analysis; end anchorage stud; calculation method
作者簡介：史曉宇，博士，高級(jí)工程師，Email：shixy@siadr.com.cn。
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