考虑颗粒破碎的建筑垃圾再生粗粒料大型剪切试验  

Large-scale Shear Test on Coarse-grained Material Recycled from Construction Waste Considering Grain Breakage

作　　者：白柯楠 高德彬[1] 马学通 严耿升[2] 杨映湖 BAI Kenan;GAO Debin;MA Xuetong;YAN Gengsheng;YANG Yinghu(College of Geological Engineering and Geomatics,Chang'an University,Xi'an 710054,China;POWERCHINA Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]长安大学地质工程与测绘学院,西安710054 [2]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《路基工程》2021年第1期46-50,共5页Subgrade Engineering

基　　金：中国铁路总公司科技研发项目(J14-09B);中国电建集团西北勘测设计研究院有限公司研发项目(XBY2017-KJ-15)。

摘　　要：基于大型直接剪切试验,对不同剪切速率下建筑垃圾再生粗粒料的强度和变形特性进行了室内试验研究,探讨了剪切速率对建筑垃圾再生粗粒料强度和变形特性的影响。结果表明:剪切速率越大,剪应力-剪切位移曲线波动越明显,当剪切速率为1 mm/min时,所得抗剪强度指标为极大值,且抗剪强度随剪切速率的变化与破碎率具有相关性。In order to discuss the influence of shear rate on the strength and deformation of recycled coarsegrained material from construction waste,herein based on indoor large-scale direct shear tests,these characteristics were studied at different shear rates.The result shows that,the larger the shear rate,the more obvious fluctuation the shear stress-shear displacement curve has;when the shear rate is 1mm/min,the given shear strength index has maximum value,and there exists relation between the shear strength changing with the shear rate and changing with the breaking rate.

关 键 词：建筑垃圾粗粒料 大型剪切 剪切速率 抗剪强度 破碎率 

分 类 号：TU459.2[建筑科学—岩土工程]