CAJ | 학술논문

为了研究CFRP-PCPs复合筋的延性,根据CFRP-PCPs复合筋混凝土梁中各组成材料的力学性能,推出了CFRP-PCPs复合筋混凝土梁曲率延性系数的计算方法。通过5根CFRP-PCPs复合筋混凝土梁在低周反复荷载作用下的抗弯试验得出曲率延性系数计算公式,曲率延性系数计算值和实测值比值的平均值为0.97,计算误差在5%以内,结果显示有良好的适用性。试件PB3的延性系数7.46大于试件PB4的5.97和试件PB6的延性系数7.34表明,张拉控制应力的提高和加大CFRP-PCPs复合筋的截面尺寸对CFRP-PCPs复合筋混凝土梁的延性性能有不利影响。
위료연구CFRP-PCPs복합근적연성,근거CFRP-PCPs복합근혼응토량중각조성재료적역학성능,추출료CFRP-PCPs복합근혼응토량곡솔연성계수적계산방법。통과5근CFRP-PCPs복합근혼응토량재저주반복하재작용하적항만시험득출곡솔연성계수계산공식,곡솔연성계수계산치화실측치비치적평균치위0.97,계산오차재5%이내,결과현시유량호적괄용성。시건PB3적연성계수7.46대우시건PB4적5.97화시건PB6적연성계수7.34표명,장랍공제응력적제고화가대CFRP-PCPs복합근적절면척촌대CFRP-PCPs복합근혼응토량적연성성능유불리영향。
In order to study the ductility of CFRP-PCPs composite tendons, according to the me-chanical properties of materials use in the concrete beams reinforced by CFRP-PCPs composite ten-dons, a method to calculate the curvature ductility of the concrete beams was derived. Five concrete beams reinforced by CFRP-PCPs composite tendons were subjected to cyclic loading in bending tests. The test results show that the increase of pre-stressed level and sectional dimension of the CFRP-PCPs composite tendons has an adverse effect on the ductility of the specimens, and the aver-age ratio of the calculated and experimental ductility is 0 . 97 , with a calculation error of less than 5%. Ductility coefficient of Specimen PB3 7. 46 is larger than that of Specimen PB4 , 5. 97 and that of PB6 7 . 34 .