CAJ | 학술논문

为了进行腐蚀吊索承载力评估，需要研究腐蚀吊索钢丝力学性能退化及性能参数分布模型．利用39根袁州大桥拆除得到的腐蚀旧钢丝进行静力拉伸试验，得到钢丝的名义弹性模型、名义极限强度、名义屈服强度和延伸率等力学性能参数，分析了力学性能参数与失重率、最大蚀坑深度之间的关系散点图；采用数理统计软件分析了名义弹性模型、名义极限强度、名义屈服强度和延伸率等力学性能的概率分布模型，结果表明，在0．05的显著性水平下，腐蚀吊索钢丝的力学性能参数不拒绝正态分布和对数正态分布．
위료진행부식조색승재력평고，수요연구부식조색강사역학성능퇴화급성능삼수분포모형．이용39근원주대교탁제득도적부식구강사진행정력랍신시험，득도강사적명의탄성모형、명의겁한강도、명의굴복강도화연신솔등역학성능삼수，분석료역학성능삼수여실중솔、최대식갱심도지간적관계산점도；채용수리통계연건분석료명의탄성모형、명의겁한강도、명의굴복강도화연신솔등역학성능적개솔분포모형，결과표명，재0．05적현저성수평하，부식조색강사적역학성능삼수불거절정태분포화대수정태분포．
In order to carry out capacity evaluation of corroded cable ,the mechanical properties degra‐dation of corroded wire and the distributed parameter model must to be studied .The 39 corroded steel wires of Yuanzhou bridge were used to study the nominal elastic model of corroded steel wire ,and the nominal ultimate strength and nominal yield strength and elongation and other mechanical properties parameters were studied .The relationship between the maximum depth of corrosion pit mechanics performance parameters and weight loss rate were analyzed ,and the probability distribution models of mechanical properties were analyzed using the mathematical statistics analysis software .The results show that ,under 0 .05 of the significance levels ,the mechanical properties parameters of corroded wire does not reject the normal distribution and lognormal distribution .