不同围压条件下钢纤维混凝土受压试验研究

对不同钢纤维体积率的混凝土复合材料在不同围压条件下进行受压试验。针对钢纤雏混凝土在三向应力状态下的强度、变形行为的复杂性,基于试验数据和拟合公式,得出了不同围压和不同钢纤维体积率对钢纤维混凝土峰值强度和应变的影响系数,建立了其峰值应力比、峰值应变比与围压比的关系模型。分析计算结果显示,该模型可以有效的描述不同围压下钢纤维混凝土的力学性能．

Press Test of SFRC under Different Confined Pressures

The press tests of composite concrete materials with different volume ratio of steel fiber have been carried out under different confined pressures. In light of the complexity of strength, deformation of steel fiber reinforced concrete (SFRC) under triaxial stress, basing on experimental data and fitted formula, the influence coefficients of different confined pressures and volume ratios of steel fiber to peak strength and strain of SFRC is gained, The relational models of the peak stress and strain ratios of the composite concrete materials and confined pressure ratio is established. The analysis results show that the given models can effectively describe the mechanical property of SFRC under different confined pressures.