废玻璃粉钢筋混凝土梁受剪性能试验研究  

Experimental study on shear behavior of waste-glass-powder reinforced concrete beams

作　　者：熊伟[1] 甘元初[1] 柯国军[1] 胡阳[1] 

机构地区：[1]南华大学土木工程学院,湖南衡阳421001

出　　处：《混凝土》2017年第4期65-68,77,共5页Concrete

基　　金：国家自然科学基金项目(51378247)

摘　　要：通过集中荷载作用下的6根钢筋混凝土梁的受剪试验,研究废玻璃粉掺量和混凝土强度对钢筋混凝土梁的受力与变形性能的影响。试验结果表明:废玻璃粉钢筋混凝土梁的受剪破坏形态相似于普通钢筋混凝土梁;废玻璃粉钢筋混凝土梁的开裂荷载比普通钢筋混凝土梁要低;在废玻璃粉掺量相同的情况下,试件的承载力随着混凝土强度的增大而逐渐增大,跨中挠度逐渐减小;在相同混凝土强度设计等级的情况下,试件的承载力随着废玻璃粉掺量的增加而逐渐下降,跨中挠度逐渐增大。废玻璃粉钢筋混凝土梁的受剪承载力具有与普通钢筋混凝土梁相接近的计算安全性,其计算公式可以采用普通钢筋混凝土梁的受剪承载力公式。Through the shear test of six reinforced concrete beams underconcentrated load, it studies the influenceon the stress state and deformation of the reinforced concrete beam exerted by the mixed waste-glass-powder quantityand concrete strength.Experimental results show that the shear failure mode of the waste-glass-powder reinforced concrete beams is similar to that of ordinary reinforced concrete beams.The cracking load of waste-glass-powder reinforced concrete beams is lower than the ordinary reinforced concrete beams.Under the condition mixing the same quantity of waste-glass-powder, samples＇ shear bearing capacity increases with the increase of concrete strength, while the mid-span deflection decreases gradually.But at the same concrete strength design level, the shear bearing capacity of specimen decreases with the increase of the mixed waste-glass-powder amount,and the mid-span deflection increases accordingly.The shear bearing capacity of the waste-glass-powder reinforced concrete beams possesses the similar calculation security with these ordinary reinforced concrete beam sand.It can be calculated by the formula used to calculate the shear bearing capacity of ordinary reinforced concrete beams.

关 键 词：废玻璃粉 钢筋混凝土梁 受剪性能 

分 类 号：TU528.01[建筑科学—建筑技术科学]