通过纤维增强塑料筋混凝土四边简支双向板的冲切性能试验,得到试验双向板的荷载-挠度曲线以及挠度分布图。试验表明,在冲切破坏发生之前,试验双向板的变形主要是弯曲变形;冲切纤维增强塑料筋混凝土双向板荷载-挠度曲线的主要影响因素的分析成果,为纤维增强塑料筋加强混凝土结构在工程中的应用和对混凝土板冲切问题的深入研究可提供试验依据。
Abstract
By punching shear test on eight two-way fiber reinforced polymer (FRP) concrete slabs which were simply supported on four sides and subjected to off-center concentrated load, we obtained the load-deflection characteristics of the test slabs and the deflection distribution. Test results showed that the deformations of the test slabs before punching shear failure was caused by bending moments. Main factors influencing the punching load-deflection curves under off-center concentrated load were concrete strength, reinforcement ratio of FRP bars, location of concentrated load, etc. The test results are beneficial to the application of FRP bars in engineering and the indepth research on punching shear performace of concrete slabs.
关键词
双向板 /
变形 /
冲切
Key words
two-way slab /
deformation /
punching shear
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参考文献
[1] 林旭健,郑作樵. 钢纤维混凝土板冲切的变形与强度[J] .福州大学学报(自然科学版),1999, 27(1):70-73.(LIN Xu-jian, ZHENG Zuo-qiao. Deformation and Strength Behavior of Steel Fiber Reinforced Concrete Slabs Subjected to Punching Shear [J] . Journal of Fuzhou University (Natural Science Edition), 1999, 27(1):70-73.(in Chinese)
[2] 张亚坤.偏置荷载下FRP筋砼双向板冲切性能研究[D] . 郑州:郑州大学, 2010.(ZHANG Ya-kun. Research on Punching Shear Properties of Concrete Two-Way Slabs Reinforced with FRP Bars Subjected to Eccentric Load[D] . Zhengzhou: Zhengzhou University, 2010.(in Chinese)
[3] 张亚坤,朱海堂,侯黎黎. 集中荷载下FRP筋混凝土双向板的冲切受力性能[J] .工业建筑,2012, 42(12),30-34.(ZHANG Ya-kun, ZHU Hai-tang, HOU Li-li. Punching Behavior of Concrete Two-way Slabs Reinforced with FRP Bars under Concentrated Loading [J] . Industrial Construction, 2012, 42(12): 30-34.(in Chinese)
[4] 林旭健,郑作樵,钱在兹.钢纤维高强混凝土冲切板的试验研究[J] .建筑结构学报,2003,24(5):72-78.(LIN Xu-jian, ZHENG Zuo-qiao, QIAN Zai-zi. Research on Steel Fiber High-strength Concrete Slab Subjected to Punching Shear[J] . Journal of Building Structures, 2003, 24(5): 72-78.(in Chinese)
[5] 朱海堂,高丹盈,肖志龙.FRP 筋混凝土双向板冲切破坏特性及变形性能[J] .工业建筑,2011,41( 增1) : 159-162.(ZHU Hai-tang, GAO Dan-ying, XIAO Zhi-long. Punching Shear Failure and Deformation Behavior of Concrete Two-Way Slabs Reinforced with FRP Bars[J] . Industrial Construction,2011,41( Sup.1): 159-162.(in Chinese)
[6] 谢晓鹏.钢筋局部钢纤维高强混凝土板冲切性能研究[D] .郑州:郑州大学,2007.(XIE Xiao-peng. Research on Punching Shear Behavior of Steel Fiber Locally Reinforced Concrete Slabs with Reinforcement[D] . Zhengzhou: Zhengzhou University, 2007.(in Chinese)
[7] NANNI A. FRP Reinforced for Concrete Structures[J] . Cement and Concrete Composites, 1994, 16(1): 65-66.
[8] DAVILA M A. Using Fiber Reinforced Plastic(FRP) Reinforcing Bars in RC Beams and Slabs[C] ∥Proceedings of the First International Structural Engineering and Construction Conference: Creative Systems in Structural and Construction Engineering, Honolulu, Hawaii, January 24-27, 2001: 473-477.
[9] EL-RAGABY A, EL-SALAKAWY E F, BENMOKRANE B. Finite Element Modeling of Concrete Bridge Deck Slabs Reinforced with FRP Bars[C] //Proceedings of the 7th International Symposium on Fiber-Reinforced Polymer (FRP): Reinforcement for Concrete Structures, Kansas City, Missouri, USA, November 6-9, 2005: 915-934.
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