内埋碳纤维砂浆调节混凝土梁承载能力的试验研究

EXPERIMENTAL STUDY ON ABILITY OF EMBEDDED CARBON FIBER REINFORCED MORTAR TO ADJUST LOAD CAPACITY OF CONCRETE BEAM

基于碳纤维水泥基材料的电热效应,通过内埋碳纤维砂浆块对普通混凝土梁进行变形调节,获得了相应的温度-变形规律。在此基础上实施了对混凝土梁预加反向变形,使混凝土梁内部产生预应力,从而提高了混凝土梁达到相同挠度时的承载能力。

Based on the electrothermal effect of carbon fiber reinforced cement based materials, the deflections of normal concrete beams were adjusted by the embedded carbon fiber reinforced mortar and the relation between temperature and deflection was also obtained. By using the relation, different reversal deflections were added to the concrete beam before load applied on it, which led to inner pre-stress in the concrete beam. Thus, the load capacity of concrete beam was improved when the same deflection was reached.