引張応力を受ける繊維補強コンクリートの変形挙動に関する解析的研究
2004 年 69 巻 578 号 p. 7-11
詳細
2004 年 69 巻 578 号 p. 7-11
Concrete which is a bittle material becomes ductile by adding fiber. However, the relationship between the fracture behavior of fiber reinforced concrete and the property of fiber is not necessarily gasped. In this paper, the analytical study on fiber reinforced concrete under direct tension is carried out by visco-elasto-plastic suspension element method. The fiber is simulated by elasto-plastic element between nodal points. The effect of number, length, direction, yield stress and stiffness of fiber elements on the fracture behavior of concrete is investigated. As the result, the descending portion of stress-strain curve becomes ductile, and the analytical results can comparatively express the experimental ones. The mechanism of bridge effect by fiber can be explained from the analytical results of internal cracks and strains of specimen surface.
