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一、配筋率的变化与构件的破坏特征配筋率指纵向受力钢筋截面面积与构件有效截面面积的百分比,通常以符号ρ表示。在工程设计和施工中应该了解,当构件上的结构抗力小于作用效应而使构件发生破坏时,构件的破坏特征取决于配筋率、混凝土的强度等级、截面形式等诸多因素,但是以配筋率对构件破坏特征的影响最为明显,实际上随着配筋率的政变,构件的破坏特征将发生本质的变化。
First, the change in the ratio of reinforcement and the destruction characteristics of the component Reinforcement ratio refers to the percentage of the cross-sectional area of the longitudinally stressed steel bar and the effective cross-sectional area of the component, usually denoted by the symbol ρ. In engineering design and construction, it should be understood that when the structural resistance on the component is less than the effect and the component is destroyed, the damage characteristics of the component depend on many factors such as the ratio of reinforcement, the strength grade of the concrete, and the cross-sectional form, but with reinforcement The influence of rate on the damage characteristics of the components is most obvious. In fact, as the coup rate of reinforcement ratio changes, the destruction characteristics of components will undergo an essential change.