竹芯竹筋混凝土板抗弯性能试验研究
发布时间：2018-11-12 10:55
【摘要】：随着全球资源日益紧缺,环境日益恶劣,人们对建筑材料、环境保护提出了更高的要求。而毛竹属于可再生资源、经济且环保,将毛竹代替钢筋运用于混凝土楼板,不仅减去了钢筋繁琐的加工工序,而且提高了板的空心率,从而达到减轻自重的目的。为研究竹芯竹筋混凝土板中的受力性能,对3块配筋率不同的竹筋板进行均布荷载下的抗弯试验性能及相关材料力学性能试验。通过试验现象及数据对比分析,可知:毛竹抗拉破坏无屈服点,属于脆性材料;板破坏时,其跨中挠度可以达到以上,延性很好;竹筋板受弯过程,呈两阶段特征,即开裂前弹性阶段和开裂后带裂l0/25缝工作直至破坏;并结合试验挠度、应变、裂缝、承载力计算结果,提出了竹芯竹筋混凝土板设计的相关构造措施及建议。
[Abstract]:With the increasing shortage of global resources and the worsening environment, people put forward higher requirements for building materials and environmental protection. The bamboo is a renewable resource, economical and environmentally friendly. Using bamboo instead of steel in concrete floor not only subtracts the complicated processing process of steel bar, but also improves the hollow rate of slab, thus reducing the weight of the slab. In order to study the mechanical properties of bamboo reinforced concrete slabs, three bamboo reinforced concrete plates with different reinforcement ratios were tested under uniform load and the mechanical properties of related materials were tested. According to the experimental phenomenon and data comparison, it can be seen that the tensile failure of Phyllostachys pubescens belongs to brittle material with no yield point, and the mid-span deflection can reach above, and the ductility is very good. The bending process of bamboo stiffened plates is characterized by two stages: elastic stage before cracking and 10 / 25 joints with cracks after cracking. Based on the experimental results of deflection, strain, crack and bearing capacity, the relevant structural measures and suggestions for the design of bamboo-reinforced concrete slabs are put forward.
【作者单位】： 湖南科技大学土木工程学院;
【基金】：湖南科技大学研究生创新基金(S140011)
【分类号】：TU377.92
本文编号：2326903
[Abstract]:With the increasing shortage of global resources and the worsening environment, people put forward higher requirements for building materials and environmental protection. The bamboo is a renewable resource, economical and environmentally friendly. Using bamboo instead of steel in concrete floor not only subtracts the complicated processing process of steel bar, but also improves the hollow rate of slab, thus reducing the weight of the slab. In order to study the mechanical properties of bamboo reinforced concrete slabs, three bamboo reinforced concrete plates with different reinforcement ratios were tested under uniform load and the mechanical properties of related materials were tested. According to the experimental phenomenon and data comparison, it can be seen that the tensile failure of Phyllostachys pubescens belongs to brittle material with no yield point, and the mid-span deflection can reach above, and the ductility is very good. The bending process of bamboo stiffened plates is characterized by two stages: elastic stage before cracking and 10 / 25 joints with cracks after cracking. Based on the experimental results of deflection, strain, crack and bearing capacity, the relevant structural measures and suggestions for the design of bamboo-reinforced concrete slabs are put forward.
【作者单位】： 湖南科技大学土木工程学院;
【基金】：湖南科技大学研究生创新基金(S140011)
【分类号】：TU377.92
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