土木工程与管理学报2017，Vol.34Issue(2)：9-13,5.
钢纤维轻骨料混凝土梁抗剪性能试验
Experiments on Shear Resistance of Steel Fiber Reinforced Lightweight Aggregate Concrete Beams
摘要
Abstract
By building structures loading devices, diagonal shear strength of 28 SFRLC ( Steel fiber reinforced lightweight aggregate concrete) beams were tested, the strength grade of concrete of SFRLC ranges from LC30 to LC50, the volume fraction of steel fibers of SFRLC ranges from 0 to1.5%, the stirrup ratio of steel fibers of SFRLC beams range from 0. 16 to 0. 475%. The effects of fiber volume fraction, shear span ratio, stirrup ratio and concrete strength on the cracking load and ultimate shear strength of beams were studied. The experiment results show that steel fiber can obviously improve the ultimate shear strength and shear toughness of the beams, and ultimate shear strength gradually improve with the increase of stirrup ratio and concrete strength, ultimate shear strength is weakened with the shear span ratio increases. Based on the experimental results, by data regression analysis method, the formulas of calculating the ultimate shear resistances of the SFRLC beams were put forward. The additional 8 SFRLC beams were used to validate the accuracy of the ultimate shear resistance formula. The results show that the experimental results match well with the calculated results from the formula.关键词
钢纤维/轻骨料/混凝土梁/斜截面抗剪承载力Key words
steel fiber/lightweight aggregate/concrete beams/diagonal shear strength分类
建筑与水利引用本文复制引用
焦楚杰,许必赋,高俊岳,王龙..钢纤维轻骨料混凝土梁抗剪性能试验[J].土木工程与管理学报,2017,34(2):9-13,5.基金项目
国家自然科学基金(51278135 （）
51478128) （）
建设部科研开发项目(10-K3-27 （）
10-K4-18) （）
