刘宏波, 曹万林, 乔崎云, 董宏英. 单排配筋聚苯模块复合墙体黏结性能试验研究[J]. 北京工业大学学报, 2019, 45(12): 1200-1211. DOI: 10.11936/bjutxb2018050015
    引用本文: 刘宏波, 曹万林, 乔崎云, 董宏英. 单排配筋聚苯模块复合墙体黏结性能试验研究[J]. 北京工业大学学报, 2019, 45(12): 1200-1211. DOI: 10.11936/bjutxb2018050015
    LIU Hongbo, CAO Wanlin, QIAO Qiyun, DONG Hongying. Experimental Study on Bond Performance of Composite Wall With Single Row of Steel Bars and Polystyrene Module[J]. Journal of Beijing University of Technology, 2019, 45(12): 1200-1211. DOI: 10.11936/bjutxb2018050015
    Citation: LIU Hongbo, CAO Wanlin, QIAO Qiyun, DONG Hongying. Experimental Study on Bond Performance of Composite Wall With Single Row of Steel Bars and Polystyrene Module[J]. Journal of Beijing University of Technology, 2019, 45(12): 1200-1211. DOI: 10.11936/bjutxb2018050015

    单排配筋聚苯模块复合墙体黏结性能试验研究

    Experimental Study on Bond Performance of Composite Wall With Single Row of Steel Bars and Polystyrene Module

    • 摘要: 为解决外墙外保温及饰面层易剥离坠落的问题,提出了单排配筋聚苯模块复合墙体.通过低周反复剪切试验和垂直拉拔试验对复合墙体的黏结性能进行研究.低周反复剪切试验中,滞回曲线无下降段;增设连接桥后,正向承载力增加13.75%,正向初始刚度增加21.01%;增设连接桥和L形钢筋后,正向承载力增加28.27%,正向初始刚度增加44.49%;增设钢筋比仅增设连接桥试件耗能能力增加.垂直拉拔试验中,增设连接桥后,竖向拉拔力增加4.78%;增设连接桥和L形钢筋后,竖向拉拔力增加13.95%.结果表明:试件均从可发性聚苯乙烯(expandable polystyrene,EPS)模块表面发生剥离而最终破坏.燕尾槽与混凝土的机械咬合对黏结性能影响最大.连接桥与钢筋设置加强了防护层与模块整体性,对破坏特征影响较大.连接桥起支撑模板、固定模块、连接防护层等作用;钢筋有提高承载力、增强整体性等作用.

       

      Abstract: To solve the problem that the insulation and decoration layers are easy to peel and fall from the external wall, the composite wall with single row of steel bars and polystyrene module was proposed. To study the bond performance, the shear test under the low cyclic loading and the vertical drawing test were carried out. In the shear test under the low cyclic loading, there was no descending section for hysteretic loops. The positive bearing capacity increased by 13.75% and the initial stiffness increased by 21.01%. The positive bearing capacity increased by 28.27% and the initial stiffness increased by 44.49%, respectively, by adding the cross structures and the L-shaped steel bars. The energy dissipation capacity was better by adding steel bars than only by installing cross structures. In the vertical drawing test, the pulling force increased by 4.78% by installing cross structures, and the pulling force increased by 13.95% by installing cross structures and the steel bars. Results show that specimens are all stripped from the surface of EPS module and destroyed finally. The mechanical bite force between the swallow tail trough and concrete has the greatest influence on the bond performance. The cross structures and steel bars strengthen the integrity of the outer protective layer and module, and have great influence on the damage characteristics. Cross structures can support formwork, fix module and outer protective layer. Steel bars improve the bearing capacity and strengthen the integrity.

       

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