钢纤维砼I、Ⅱ复合型V形切口断裂准则的试验研究*
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邓宗才 李秉章 徐佐霞
(山东建材学院建工系 济南 250022)[提要] 用四点剪切梁试件测得了钢纤维砼I、Ⅱ复合型V形切口问题的临界断裂曲线,建立了断裂准则的经验公式,讨论了最大拉应变准则在V形切口问题中的应用。
[关键词] 钢纤维砼 V形切口 断裂准则The critical fracture curve of mixed mode I andⅡfor V-notch in steel fiber reinforced concrete is obtained by using four-point shear specimens, the application of the maximum tensile strain criterion to steel fiber reinforced concrete is studied.
Keywords: steel fiber; reinforced concrete; V-notch; fracture criterion