您好,欢迎来鲁班袋建筑工程资料库!
您当前的位置:首页 > 工程书籍 > 混凝土系列
钢纤维混凝土三轴压缩下的强度和韧度特性
  • 资料大小:350KB
  • 资料类型:.PDF
  • 资料等级:
  • 发布时间:2021-09-13
资料介绍

钢纤维混凝土三轴压缩下的强度和韧度特性
王志亮 , 诸斌
(1.同济大学地下建筑与工程系,上海200092;2.同济大学岩土与地下工程
教育部重点实验室,上海2OOO92)
摘要:当围压分别为10,2O,40,80 MPa时,对纤维体积分数 为0 ,0.75 ,1.50 ,3.00 的钢
纤维混凝土进行了3×10 ,5×10 S 两种应变率的常规三轴压缩试验,测出了全过程应力一应
变曲线,并据此分析了纤维体积分数、围压和应变率对试验曲线的峰值应力、峰值应变及材料韧度
等力学指标的影响规律.结果表明:当I*1压相同而 不同时,随着 的提高,材料的峰值应力和峰
值应变均明显提高,其韧度也有所提高;当围压不同而 相同时,随着围压的增加,材料的强度和
韧度都有所提高.而且,在较低围压下往素混凝土里添加钢纤维更能够发挥其增强和增韧效果;随
着加载应变率的增加,材料的峰值应力、峰值应变也有一定的增大趋势.
关键词:钢纤维混凝土;体积分数;三轴压缩;强度;韧度
中图分类号:TU528.572 文献标志码:A doi:10.3969/j.issn.1007—9629.2012.03.002
Strength and Toughness Characteristic of Steel Fiber Reinforced
Concrete in Triaxial Compression
W AN G Zhi—liang . ZH U Bin
(1_Department of Geotechnical Engineering,Tongii University,Shanghai 200092,China;2.Key Laboratory of
Geotechnical and Underground Engineering of Ministry of Education,TonNi University,Shanghai 200092,China)
Abstract:Conventional triaxial compression tests for steel fiber reinforced concrete with fiber volum e frac—
tions of 0 ,0.75 ,1.50 and 3.00 under four confining pressures(10,2O,40,8O M Pa)were con—
ducted,during which two different strain rates(3× 10一 ,5× 10一 S )were selected.Based on the ob—
tained stress-strain curves,the effects of fiber volume fraction,confining pressure and strain rate on the
curve peak stress,peak strain and material toughness were investigated. The test result shows that:
(1)Under the same confining pressure,peak stress,peak strain and compression toughness increase with
the increase of volume fraction f. (2)Under the same f,with the increase of confining pressure,both
compression strength and toughness show an appreciable increase.Again,under lower confining pressure
the addition of steel fiber is beneficial to improve concrete strength and toughness.(3)W ith the increase of
strain rate,peak stress and peak strain of the curves all remain to have an increase tendency.
Key words: steel fiber reinforced concrete(SFRC); volume fraction; triaxial compression; strength

温馨提示

因本站资料资源较多,启用了多个文件服务器,如果浏览器下载较慢,请调用迅雷下载,特别是超过了5M以上的文件!请一定调用迅雷,有时候速度就会飞起哦,如果您的浏览器自动加载了PDF预览,文件太大又卡死,请按下载说明里的把PDF插件关闭了就可以直接下载,不会再预览了!

友情链接: ArchiName筑名导航 孙悟空

网站首页 | 关于我们 | 服务条款 | 广告服务 | 联系我们 | 网站地图 | 免责声明 | WAP
Powered by lubandai.com © 2009-2016 Inc. 桂ICP备16008802号
资源报错、业务联系及其它事务请发邮件与我们联系:admin@lubandai.com