粘钢混凝土梁的弯曲损伤分析

Bending Damage Analysis of Steel-bonded Concrete Beams

本文采用混凝土损伤模型。导出了粘钢混凝土梁的弯矩曲率关系以及中性轴位置的变化规律,为粘钢设计提供了理论依据;还将梁粘钢前后的弯曲损伤进行了对比分析,结果与实验基本接近,表明粘钢后梁的抗弯能力有显著提高。

The relation between the moment and curvature of steel-bonded concrete beams is derived from using a damage model for concrete and the position changing regularity of the neutral axis is made out, Thus, a theoretical basis for the design of steel-bonded reinforcement is provided. The bending damage of the beams before and after steel-bonded reinforcement is compared with that of the plain concrete beams. The results illustrate that the bending resistance ability of the beams after steel-bonded reinforcement in-creases markedly, which is in agreement' with experiments.