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超高强度混凝土(UHPC)具有高强度、高抗折等优良性能,为揭示钢筋对UHPC梁受力性能的影响,采用有限元软件ANSYS对不同强度的无筋混凝土梁和有筋混凝土梁进行对比分析,其结果表明,在弹性范围内,钢筋对UHPC梁在受弯作用下能够有效减少梁的挠度和应变、提高梁的承载能力,但随着混凝土弹性模量增高,钢筋在混凝土梁中的作用效率将会降低。
In order to reveal the effect of steel bar on the mechanical behaviors of UHPC beams, the finite element analysis software ANSYS is used to analyze the strength of non-reinforced concrete beam and reinforced concrete beam. UHPC is characterized by high strength and high bending resistance. The results show that under the elastic range, the steel bar can effectively reduce the deflection and strain of the beam and improve the bearing capacity of the beam under bending, but with the increase of the elastic modulus of concrete, the efficiency of the steel bar in the concrete beam Will be reduced.