预应力碳纤维板性能试验研究

Experimental Study on Mechanical Properties of Carbon Fiber Reinforced Plastics Plate Strengthened by Prestressing

对预应力碳纤维板的静态力学性能、疲劳性能、应力松弛及温度适应性进行了研究。结果表明,选用的80 mm×3 mm(宽×厚)规格的碳纤维板具有高的静态力学性能、优异的疲劳性能、低的应力松弛率、极小的热膨胀系数和良好的温度适应性,完全满足桥梁预应力加固应用的技术要求。

The static mechanical properties,fatigue properties,stress relaxation and temperature adaptability of CFRP( carbon fiber reinforced plastics) plates reinforced by prestressing were studied. The results showed that the selected 80 mm×3 mm CFRP plates had good static mechanical properties,excellent fatigue properties,low stress relaxation rate and thermal expansion coefficient and strong temperature adaptability,which could fully meet the technical requirements for pre-stressing reinforcement in bridge engineering.