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引言在工程实际中,用于承重的钢纤维混凝土构件多为配筋钢纤维混凝土构件,即把普通钢筋与钢纤维共同作为混凝土的增强体以改善构件的延性、刚度、抗裂性、整体性及强度性能等。在这种情况下钢纤维混凝土所表现出的力学性能很有可能与无主筋时钢纤维混凝土自身所表现的力学性能之间差异很大。这就使得依据钢纤维混凝土单向拉伸实验所建立的材料本构关系用于配筋钢纤维混凝土构件的结构计算的合理性成为疑问。为了弄清有主筋和无主筋作用时钢纤维混
Introduction In engineering practice, steel fiber reinforced concrete components used for load-bearing are mostly reinforced steel fiber reinforced concrete components, that is, ordinary steel and steel fibers are used together as concrete reinforcement to improve the ductility, stiffness, crack resistance, and integrity of the components. And strength properties. In this case, the mechanical properties exhibited by steel fiber reinforced concrete are likely to differ greatly from the mechanical properties exhibited by steel fiber reinforced concrete itself when there is no main reinforcement. This makes the rationality of the structural calculation based on the material constitutive relationship established by the uniaxial tensile test of steel fiber reinforced concrete used for reinforcing steel fiber reinforced concrete components become questionable. In order to clarify the role of steel fibers mixed with main reinforcements and non-maintenance reinforcements