EXPERIMENTAL RESEARCH ON BENDING FATIGUE BEHAVIOR OF COMPOSITE SLAB WITH PRECAST PRESTRESSED RIBBED PANELS
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摘要: 板肋形式是影响预制预应力带肋底板混凝土叠合板弯曲疲劳性能的重要因素之一。为研究板肋形式对叠合板弯曲疲劳性能的影响规律,对一块T形肋底板叠合板试件与四块矩形肋底板叠合板试件的弯曲疲劳进行对比试验,研究不同板肋形式和疲劳荷载幅值对叠合板疲劳损伤程度的影响规律,得到了其破坏形态、裂缝分布规律、荷载-挠度曲线、荷载-应变关系曲线。结果表明:相同板肋形式随着疲劳荷载幅值增大,会导致明显的疲劳弯曲刚度退化,并且疲劳损伤也会显著增加,但叠合面疲劳损伤较小,表明叠合面的存在不会影响叠合板的受力性能,而不同板肋形式的矩形肋底板叠合板与T形肋底板基本表现出相同的弯曲疲劳性能。Abstract: Slab-rib form is one of the important factors that affects the bending fatigue behavior of precast prestressed concrete composite slab.In order to study the effect of slab-rib form on bending fatigue behavior of composite slab, a comparative test of bending fatigue of one T-shaped ribbed plate composite plate specimen and four rectangular ribbed plate composite plate specimens was carried out. The parameters include slab-rib form and fatigue load amplitude. The failure mode, crack distribution, load-deflection curve, load-strain relation curve were obtained. The influence of slab-rib form and fatigue load amplitude on fatigue damage degree of composite slab was analyzed. The results showed that the fatigue bending stiffness of the plate decreased obviously and the fatigue damage increased obviously with the increase of fatigue load amplitude. However, the fatigue damage of superimposed surface was relatively small, which indicated that the existence of superimposed surface would not affect the mechanical propcrties of composite slab. The bending fatigue behaviors of rectangular ribbed composite slab was the same as that of T-shaped ribbed plate.
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周绪红,吴方伯,张敬书,等.新型单向预应力双向配筋混凝土叠合楼盖在震后重建中的应用[C]//2008年汶川地震建筑震害分析与重建研讨会论文集.北京:2008:448-454. 周绪红,吴方伯,刘占科,等.新型装配整体式房屋结构体系[C]//2008年汶川地震建筑震害分析与重建研讨会论文集.北京:2008:455-462. 姜忻良,岳建伟.陶粒叠合层叠合板的承载能力研究[J].四川大学学报(工程科学版),2006,38(6):6-12. 沈春祥.预应力混凝土双向叠合板试验研究[D].天津:天津大学,2005:5-20. 刘汉朝,蒋青青.倒"T"形叠合简支板的试验研究[J].中南大学学报(自然科学版),2004,35(1):147-150. 安海玉,贾莉,丁永君.预应力混凝土双向叠合板力学性能试验研究及应用[J].建筑结构,2012,42(12):90-93. 曾垂军,吴方伯,刘锡军,等. 新型叠合结构体系的设计与施工[J].建筑科学,2006,22(4):67-71. 吴方伯,黄海林,陈伟,等.预制预应力带肋底板-混凝土叠合板双向受力效应理论研究[J].工业建筑,2010,40(11):55-58. 黄海林,李金华,曾垂军,等. 预制带肋底板混凝土双向叠合板等效各向同性板的弹性计算方法[J].应用力学学报,2018,35(3):624-630,694. 黄海林,李金华,曾垂军,等.均布荷载作用下四边简支预制带肋底板混凝土双向叠合板的简化弹性计算方法[J].湖南科技大学学报(自然科学版),2016,31(4):46-51. 黄海林,李金华,曾垂军,等.均布荷载作用下一边固支三边简支预制矩形肋底板混凝土双向叠合板的简化弹性计算方法[J].建筑科学与工程学报,2017,34(1):58-67. 吴方伯,黄海林,陈伟,等.预制带肋底板混凝土双向叠合板实用弹性计算方法[J].建筑结构,2012,42(4):99-103. HUANG H L, LI J H, ZENG C J, et al. Simplified Elastic Design Method Using Equivalent Span Ratio for Two-Way Concrete Composite Slabs with Precast Ribbed Panels[J]. Structural Concrete, 2019,20(1):213-224. 吴方伯,黄海林,陈伟,等.预制带肋底板混凝土双向叠合板极限承载力[J].土木建筑与环境工程,2011,33(5):34-40. 赵顺波.钢筋混凝土板正截面疲劳性能试验研究[J].应用基础与工程科学学报,1999,7(3):289-297. 黄海林.预制带肋底板混凝土叠合楼板受力性能及设计方法[D].长沙:湖南大学,2013. 黄海林,吴方伯,祝明桥,等.预制T形肋底板混凝土叠合板弯曲疲劳性能试验研究[J].建筑结构学报,2016,37(5):233-241.
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