钢筋桥联混凝土结构的韧带正应力计算

钢筋混凝土构件受载荷后的破坏,是一个混凝土裂缝扩展、钢筋桥联基体和钢筋与基体脱粘以及钢筋伸长变形直到断裂的过程。为此,根据强化筋桥联基体裂纹的力学分析模型,变形体的叠加原理和协调性条件,在基体和强化筋材料为完全弹性、裂纹端部存在粘聚力的情况下,用有限元法对韧带上的正应力进行了计算分析和讨论。

Calculation of the Ligament Normal Stress in Reinforced Concrete Structure

The fracture process of reinforced concrete structure under loaded, include the following steps one after another: concrete matrix crack starting, the crack extending, steel tendon bridging the concrete crack, the length of tendon deviated from concrete elongating, the tendon and concrete rupturing ultimately. This paper on the basis of a mechanics model of crack bridged with reinforced tendon, by the principle of superposition and harmony of solid deformation, the normal-stress is calculated and discussed with the help of the infinitive method , under the condition of both the base material and reinforced tension material in the range of liner elastic and the condition of cohesive force.