CAJ | 학술논문

收缩变形对混凝土桥梁耐久性和安全性具有不利影响。构建混凝土桥梁收缩特性影响因素指标体系，选取33组混凝土收缩试验数据作为样本数据，采用主成分分析法研究混凝土桥梁收缩特性影响因素的敏感性。研究结果表明：主成分分析方法可得出各项因素对混凝土桥梁收缩影响力度，适用于混凝土收缩影响因素敏感性分析；含养护湿度、养护结束龄期等养护工艺和环境湿度对混凝土桥梁收缩影响最大；混凝土材料组成成分的影响力次之。
수축변형대혼응토교량내구성화안전성구유불리영향。구건혼응토교량수축특성영향인소지표체계，선취33조혼응토수축시험수거작위양본수거，채용주성분분석법연구혼응토교량수축특성영향인소적민감성。연구결과표명：주성분분석방법가득출각항인소대혼응토교량수축영향력도，괄용우혼응토수축영향인소민감성분석；함양호습도、양호결속령기등양호공예화배경습도대혼응토교량수축영향최대；혼응토재료조성성분적영향력차지。
Shrinkage deformation of concrete bridges have an adverse effect on durability and safe-ty.The index system of concrete shrinkage is established.This paper analyze the sensitivity of factors in-fluencing concrete bridge shrinkage by Principal Component Analysis(PCA)in the base of 33 groups sam-ple data.The results show that PCA can calculate the impact of factors for concrete bridge shrinkage;Con-crete bridge shrinkage is mostly affected by environment humidity and curing technique including the hu-midity of curing and curing ended age;Material composition of concrete is the second fact of shrinkage.