【摘要】 对3榀1∶2比例模型,再生骨料取代率分别为100%、50%和0%的密肋复合墙体的力学性能进行对比试验.研究了再生混凝土密肋复合墙体的破坏机制、承载力、延性、刚度退化等性能.研究发现:墙体属于剪切破坏;最大水平承载力,50%取代率的墙体和普通混凝土墙体相比没有下降,而100%取代率墙体承载力下降18%;延性系数,随着取代率的增加而提高.试验表明:50%取代率密肋复合墙体具有良好的力学性能,应用于实际工程完全可行;而100%取代率墙体需慎用.更多还原

【Abstract】 This paper studies the three recycled concrete multi-ribbed composite walls(composed of 100%,50%,0% recycled aggregate)by experiment.The mechanical behaviors of recycled concrete multi-ribbed composite wall,such as the failure patterns,hysteretic loop,ductility,deterioration of stiffness,etc.,are researched.The test results indicate:the failure pattern of multi-ribbed wall using recycled concrete is shearing failure;the maximum horizontal bearing capacity of recycled concrete multi-ribbed wall,composed of 50% recycled aggregate,is no less than natural concrete wall.However,the bearing capacity of the wall,composed of 100% recycled aggregate,is brought down by 18%;and the ductility factors increase as the replacement rate of recycled aggregate increase.The study concludes that the recycled concrete multi-ribbed wall,with the displacement rate of 50%,has better mechanical properties and is quite feasible for practical civil engineering.The recycled concrete multi-ribbed wall,which the displacement rate is 100%,should be used carefully.更多还原