摘要
利用不同尾矿砂取代率的混凝土梁斜截面受剪性能进行试验研究,结果表明:尾矿砂绿色混凝土梁与普通混凝土梁的受力破坏形态相似,在相同荷载下,尾矿砂绿色混凝土梁的箍筋应变大于普通混凝土梁,跨中挠度随着剪跨比的增大而增大;从开裂荷载来看,40%替代率的尾矿砂绿色混凝土梁抗裂性能最好,极限承载能力最高。并根据试验结果建立了较为合理的尾矿砂绿色混凝土梁斜截面受剪承载力计算公式。
This text conducts studies on the oblique section shear of concrete beam by using different tailings replacement ratio.The results show that it is similar to the normal concrete beam on the failure pattern of the stress.Under the same load,the stirrup strain of green tailings concrete beam is greater than that of the ordinary concrete beam and the mid-span deflection is increased with the increase of shear span ratio.The crack resistance of 40% replacement on green tailings concrete beam is best and the ultimate bearing capacity is highest from the point of cracking load.The reasonable tail calculation formula of inclined section bearing capacity is established for green tailings concrete beam according to the test results.
出处
《工业安全与环保》
北大核心
2015年第6期43-47,58,共6页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(90815005)
关键词
尾矿砂
绿色混凝土
受剪性能
斜截面承载力
试验研究
tailings green concrete shear performance inclined section bearing capacity experimental study
