摘要
分析归纳了钢纤维混凝土的基本特性,对素混凝土、钢筋混凝土以及钢纤维混凝土衬砌的变形特性进行了比较分析;通过模型试验,研究了钢纤维的阻裂作用,提出了考虑拉力软化关系的钢纤维混凝土衬砌结构的破坏模式和承载能力分析方法。其研究成果可供钢纤维混凝土衬砌设计参考和利用。
The comparison between the deformation property of plain concrete and steel reinforced concrete as well as steel fiber reinforced concrete tunnel lining was studied.Restricting crack open function of steel fiber after crack occurs was considered.The model tests of ring-shaped structure were conducted.The results prove that steel fiber concrete is more fit for the tunnel lining than the plain concrete.Modeling of collapse and analytical method of bearing capacity was put forward taking account of tension-softening relationship of SFRC.The results are helpful for the design of steel fiber reinforced concrete lining.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2007年第6期40-43,共4页
Journal of Railway Science and Engineering
基金
四川省交通重点科技项目(2004.21-9-1)
关键词
钢纤维混凝土
隧道衬砌
拉力软化
破坏模式
承载能力
steel fiber reinforced concrete
tunnel lining
tension softening
collapse behavior
bearing capacity
