聚丙烯纤维锂渣混凝土梁受剪承载力研究  

Study on shear bearing capacity of polypropylene fiber lithium slag concrete beam

作　　者：张路杨 张广泰[1] 曹银龙 张梅 陈勇 Zhang Lu-yang;Zhang Guangtai;Cao Yinlong;Zhang Mei;Chen Yong(School of Architecture and Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047

出　　处：《建筑科学》2020年第3期115-121,共7页Building Science

基　　金：国家自然科学基金(51568064).

摘　　要：通过9根聚丙烯纤维锂渣混凝土梁在单调荷载作用下受剪性能的试验研究,获得了该类新型混凝土梁受剪承载力实测值。在试验研究基础上,采用桁架-拱模型对其破坏特征进行分析,建立基于该模型的聚丙烯纤维锂渣混凝土梁受剪承载力理论计算方法,并通过国内外20组聚丙烯纤维锂渣混凝土梁受剪承载力试验数据对建议的桁架-拱计算模型进行验证。计算结果表明:基于桁架-拱模型的聚丙烯纤维锂渣混凝土梁受剪承载力的理论计算值与试验值之比的平均值为0.965,标准差为0.089,变异系数为0.092,二者吻合较好。The measured values of the shear capacity of the new concrete beams are obtained,through the experimental study on the shear capacity of nine polypropylene fiber reinforced lithium slag concrete beams under monotonic loading. Based on the experimental research,the truss-arch model is used to analyse the damage characteristics. The theoretical calculation method of shear capacity of polypropylene fiber lithium slag concrete beam based on the model is established. The proposed truss-arch calculation model is verified by 20 sets of experimental data of shear capacity of polypropylene fiber reinforced lithium slag concrete beams at home and abroad. The calculation results show that the average ratio of the theoretical calculation value of the shear capacity of the polypropylene fiber lithium slag concrete beam based on the truss-arch model is 0. 965,the standard deviation is 0. 089,and the coefficient of variation is 0. 092. The truss-arch model can be used to analyse the shear capacity of polypropylene fiber lithium slag concrete beams under monotonic loading.

关 键 词：桁架-拱模型 聚丙烯纤维 锂渣混凝土 新型混凝土梁 受剪承载力 

分 类 号：TU528.01[建筑科学—建筑技术科学]