受拉钢筋暴露的钢筋混凝土梁承载力研究

Ultimate Load of RC Beams with Exposed Tensile Reinforcement

在钢筋混凝土梁修复加固过程中，常常可能除去梁上部分破损的混凝土，使钢筋外露，在荷载作用下，造成梁的力学反应发生变化。本文提出了计算部分受拉筋暴露的钢筋混凝土简支梁承载力的方法，给出了在荷载作用下梁的应变变化情况，理论分析结果与实验结果吻合良好。

In the repairing and strengthening of RC (reinforced concrete)beams,it is highly possible to remove part of damaged concrete from the beam,which causes the exposure of reinforcement.Subjected to external load,the mechanical behaviour of the beam will change greatly.In this paper,a theoretical model for estimating the flexural ultimate load of reinforced concrete beams with part of tensile reinforcement is suggestted.Encouraging correlations have been found between the theoretical predictions and experimental data reported by others.