摘要
根据12个小梁弯曲韧性的试验、12个切口梁韧性试验,研究了钢纤维对基体的初裂弯曲抗拉强度、残余弯拉强度、弯曲韧度指数的影响。分析了钢纤维对基体变形性能的影响及增韧效果。同时探求由残余弯拉强度和钢纤维的特征参数这两个方面求得钢纤维混凝土正常使用极限状态、承载能力极限状态下的抗拉强度值。结果表明:钢纤维混凝土是理想的地下结构建筑材料,能够适应所需要的强度和变形的要求。
Based upon the experiment results obtained from the The flexural toughness of 12 small beam, The The flexural toughness of 12 coped beam, the effects of the steel fiber content on the the tensile strength with imi-tial curvature under axial of concrete,bending strength of residual, Flexural toughness index, The deformation and toughness increment properties of the milling steel fiber are system0at- ically analyzed.and explore the tensile strength of the serviceability limit state and ultimate limit state which got from bending strength of residual and The characteristic parameters of steel fibers.The outcome shows that the SFRC is a kind of ideal building material for under- ground structures.the demands for strength and deformation can be met more easily.
出处
《混凝土》
CAS
CSCD
北大核心
2014年第3期71-74,共4页
Concrete
基金
中央高校基本科研业务费专题项目(SWJTU11ZT33)
关键词
钢纤维
喷射混凝土
弯曲韧性
残余强度
steel fiber
shotcrete
flexural toughness
residual strength
