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利用自制的砼三轴试验系统,对钢纤维砼在两拉一压及三拉应力状态下的变形及强度特性进行了试验研究。试件尺寸为15cm×15cm×15cm和10cm×10cm×10cm两种。在试验基础上分析了钢纤维砼应力一应变关系曲线的特点,计算了极限强度值,讨论了在两拉一压及三拉应力状态下不同应力比时钢纤维砼的抗拉、抗压强度的变化规律。
The self-made concrete triaxial test system was used to study the deformation and strength characteristics of steel fiber reinforced plastic under the condition of two tension-compression and three tension. Specimens were 15cm × 15cm × 15cm and 10cm × 10cm × 10cm. Based on the experiment, the characteristics of the stress-strain curve of steel fiber reinforced concrete are analyzed and the ultimate strength values are calculated. The tensile strength and compressive strength of steel fiber reinforced concrete with different stress ratio under two tension and one tension and three tension are discussed The law of change.