摘要
根据钢纤维混凝土的塑性理论,确定了钢筋、混凝土以及钢纤维混凝土的屈服条件,建立了具有两个位移参变量的钢纤维增强钢筋混凝土梁斜截面破坏机构,应用塑性分析的上限定理,由能量法推导出斜截面剪切破坏荷载的函数表达式,对其进行优化求解得到极限荷载.通过调整钢纤维混凝土层厚,使计算公式同时适用于普通钢筋混凝土梁、钢筋钢纤维增强部分混凝土梁和钢筋钢纤维增强全截面混凝土梁的斜截面剪切破坏的极限荷载计算.实例计算表明:计算结果与试验结果吻合良好,证明了计算理论及方法是正确的.
Based on plastic theory,the yield formulas of reinforced bar,concrete and steel fiber reinforced concrete were confirmed.Then the diagonal sectional failure mode with two displacements of steel fiber reinforced concrete beams with reinforcement was established.With the plastic ultimate analysis and the method of energy,We deduce the function expression of the load that lead to the failure in shear of oblique section,then we optimize it to get the limit loads.Through adjusting the thickness of steel fiber re...
出处
《郑州大学学报（工学版）》
CAS
北大核心
2009年第3期9-12,共4页
Journal of Zhengzhou University（Engineering Science）
关键词
钢纤维混凝土
剪切强度
塑性分析
破坏机构
steel fiber reinforced concrete
shear strength
plastic analysis
failure mechanism
