吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (3): 946-955.doi: 10.13229/j.cnki.jdxbgxb20200095
Guang-tai ZHANG1(),Lu-yang ZHANG1,Guo-hua XING2,Yin-long CAO1,Bao YI1
摘要:
通过2片钢-聚丙烯混杂纤维混凝土(SPFRC)剪力墙和1片钢筋混凝土(RC)剪力墙的低周反复加载试验,研究了SPFRC剪力墙的受力机理,分析了纤维掺量和轴压比对剪力墙破坏形态、受剪承载力、延性和耗能能力的影响。试验结果表明:在轴压比相同的条件下,混杂纤维可有效抑制剪力墙裂缝的发展,提高剪力墙的受剪承载力、变形能力、耗能能力;掺入混杂纤维的试件,随着轴压比由0.1提高至0.2,其承载能力和延性有所提高,但耗能能力有所下降;同时综合考虑混杂纤维、水平和竖向分布钢筋、混凝土斜压杆以及暗柱对受剪承载力的贡献,依据桁架-斜压杆机构机理,建立了SPFRC剪力墙受剪承载力计算公式,并通过本文及国内相关文献数据对其进行了验证,受剪承载力实测值与计算值比值的平均值为1.01,标准差为0.17,两者吻合较好。
中图分类号:
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