【摘要】 为了改善碳纤维筋(CFRP)预应力混凝土梁的受力及延性性能,针对CFRP筋特殊的材料性能,在国内首次引入了“部分预应力部分粘结”的新概念。对CFRP筋与环氧树脂钢筋混合配筋的预应力混凝土梁进行了试验研究,结果说明梁的预应力度及预应力筋的无粘结部分长度会对CPFR筋预应力混凝土梁的受力及延性性能产生较大的影响。更多还原

【Abstract】 To improve the bending and ductility behavior of prestressed concrete beams that reinforced with carbon fiber reinforced plastics bars(CFRP), in the light of the special material property of CFRP bar, a new concept, “partially-prestressed and partially-bonded", was first introduced in China. Experimental studies on prestressed concrete beams with hybrid CFRP and epoxy resin coated steel reinforcements were carried out. The test results indicated that prestressing ratio and unbonded length had insignificant effect on bending and ductility behaviors of CFRP prestressed concrete beams.更多还原