纤维混凝土结构技术规程讲述.pdfVIP

《纤维混凝土结构技术规程》（CECS38：2004）介绍 黄承逵 赵国藩 （大连理工大学大连116024） [提要]对《钢纤维混凝土结构设计与施工规程》（CECS38 ：92 ）作了全面修订，编制成 《纤 维混凝土结构技术规程》（CECS38 ：2004 ）。新规程增补了合成纤维混凝土的有关设计与施 工的内容；钢纤维品种中淘汰了低强圆直型纤维、碳钢熔抽型纤维，新增了高强钢丝切断型、 铣削型、剪切异型和低合金钢熔抽型纤维；混凝土的强度等级由CF20～CF40 扩大到CF80， 并考虑了钢纤维 中低强度和高强度混凝土增强作用的不同，分别给出了有关材料性能和各 项构件设计的影响系 ；在隧洞支护与衬砌和工业建筑地面设计中引入了考虑钢纤维混凝土 韧性的设计概念；增补了钢纤维增强屋面板、承台、牛腿、深梁、码头铺面、桥面、桥梁结 构、水工结构、层布式复合路面等领域有关的设计施工的内容。 [关键词] 钢纤维 合成纤维 混凝土 结构 设计 施工 技术规程 Brief Introduction of Technical Specification for Fiber Reinforced Concrete Structures （CECS38:2004）/ Huang Chengkui, Zhao Guofan (Dalian University of Technology ,Dalian 116024,China) Abstract : 《Technical specification for fiber reinforced concrete structures》(CECS38:2004) has been publicized and replaced the old specification (CECS38:92). In the new specifications, content of design and construction on synthetic fiber reinforced concrete is added, the round straight steel fiber of low strength and the melt extracted steel fiber with lower containing of carbon are eliminated, high strength fiber cut from steel wire, specially shaped fiber milled from steel ingot or sheared from steel sheet and melt extracted steel fiber with low alloy are recommended. The strength grade of fiber reinforced concrete is extended from 40 MPa to 80 MPa, To take into account the effects of steel fibers on different strength concrete, different effecting factors are given to estimate performances of the concrete with different strength grade and each computatio