- 摘 要
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（長安大學建筑工程學院， 西安 710061）
［摘要］粘結(jié)滑移性能對組合樓板受剪承載力影響較大，使用PVA-ECC材料代替?zhèn)鹘y(tǒng)混凝土，能夠有效改善混凝土的脆性，提高組合樓板受剪性能。采用力平衡方法得到縮口型壓型鋼板-ECC組合樓板剪切力-滑移曲線，合理地考慮ECC與壓型鋼板接觸作用，得到縮口型壓型鋼板-ECC組合樓板有限元模型，對縱向剪切承載力進行分析，有限元分析與試驗結(jié)果符合較好，驗證了有限元模型的準確性。在此基礎上，采用有限元方法對不同剪跨、樓板、壓型鋼板厚度及PVA-ECC強度等因素進行變參數(shù)分析，參考壓型鋼板混凝土組合樓板縱向剪切承載力計算方法，提出縮口型壓型鋼板-ECC組合樓板縱向剪切承載力計算公式。
［關(guān)鍵詞］壓型鋼板； 組合樓板； PVA-ECC； 縱向剪切承載力
中圖分類號：TU398-7文獻標識碼：A文章編號：1002-848X(2020)02-0096-05
Research on longitudinal shear capacity of ECC composite slabs with closed profiled steel plate
Bai Liang， Li Yilin， Zhang Cai， Wang Chen
（School of Civil Engineering, Chang′an University, Xi′an 710061, China）
Abstract:The bond slip behavior has a great influence on the shear bearing capacity of composite floor. Using PVA-ECC material instead of traditional concrete can effectively improve the brittleness of concrete and the shear performance of composite floor. By using the method of force balance, the shear force slip curve of the ECC composite slabs with closed profiled steel plate was obtained, and the contact effect between the ECC and the profiled steel plate was considered reasonably, to obtain the finite element model of the ECC composite slabs with closed profiled steel plate. The analysis of the longitudinal shear bearing capacity shows that the finite element analysis and the test results are in good agreement, and the accuracy of the finite element model is verified. On this basis, the finite element method was used to analyze the variable parameters of different shear span, floor slab, profiled steel plate thickness and PVA-ECC strength. Referring to the calculation method of longitudinal shear bearing capacity of concrete composite slabs with profiled steel plate, the calculation formula of longitudinal shear bearing capacity of the ECC composite slabs with closed profiled steel plate was proposed.
Keywords:profiled steel plate; composite floor; PVA-ECC; longitudinal shear capacity
*國家自然科學基金資助項目（51208058），中央高校基本科研業(yè)務費資助項目(300102288205)，陜西省自然科學基金資助項目（2018JM5040）。
作者簡介：白亮，博士，教授，Email: bailiang@chd.edu.cn。
