再生粗骨料混凝土梁受扭的力学性能试验研究

Experimental study on mechanical properties of recycled coarse aggregate concrete beams under torsion

随着城市的发展与建设,如何处理建筑垃圾一直困扰着人们,而发展、应用再生混凝土是解决这一问题的主要途径之一。试验以再生粗骨料混凝土梁作为研究对象,制作了四组分别在粗骨料取代率、混凝土抗压强度、配筋方式上变化的再生粗骨料混凝土梁,对其进行了扭转破坏试验,同时分析了再生粗骨料混凝土梁的扭转破坏的过程与形态,并研究了梁的裂缝发展规律和破坏特征,得到了不同粗骨料取代率和配筋方式对再生混凝土梁抗扭承载力的影响规律,为再生粗骨料混凝土梁在工程实际应用中提供了试验参考。

With the development and construction of cities,how to deal with construction waste has been puzzling people,and the development and application of recycled concrete is one of the main ways to solve this problem.The recycled coarse aggregate concrete beam was used as the research object,and four groups of recycled coarse aggregate concrete beams that vary in the replacement rate of coarse aggregate,the compressive strength of concrete,and the way of reinforcement are made,and the torsional failure tests are carried out on them.At the same time,the process and form of torsional failure of recycled coarse aggregate concrete beams are analyzed,and the crack development law and failure characteristics of the beams are studied,The influence of different coarse aggregate replacement rate and reinforcement method on the torsional bearing capacity of recycled coarse aggregate concrete beams is obtained,which provides a test reference for the practical application of recycled coarse aggregate concrete beams in engineering.