竹芯竹筋混凝土板抗弯性能试验研究

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。

The flexural bearing capacity of reinforced concrete one-way slab bamboo bamboo core

As the global resources increasingly scarce, environment is becoming more and more bad, for building materials, environmental protection put forward higher request.And bamboo belongs to renewable resources, economy and environmental protection, apply bamboo instead of steel to concrete floor, not only reduced the steel complex processing working procedure, and increase the rate of the hollow plate, so as to achieve the purpose of reducing weight.For the study of bamboo sticks bamboo mechanical performance of reinforced concrete plate, the 3 piece of reinforcement ratio of different bamboo stiffened plate under uniformly distributed load bending test performance and related material mechanical performance test.Through the experimental phenomena and data contrast analysis, shows that bamboo tensile damage no yield point, belongs to brittle materials;Plate damage, its midspan deflection can reach above, good ductility;Bamboo reinforcement plate bending process, a two stage characteristics, namely the elastic stage before cracking and crack fracture work until after failure;Combined with test deflection, strain, crack, bearing capacity calculation, proposes the bamboo sticks bamboo reinforcement construction measures and Suggestions about the design of concrete slab.