CAJ | 학술논문

保护层厚度、CO2浓度影响系数、环境湿度、混凝土立方体强度等因素都影响了结构的耐久性寿命。本文运用灰色关联理论分析了单因素对结构预测寿命的影响，并分析了各影响因素对结构碳化寿命的敏感性。结果表明：保护层厚度、混凝土立方体强度、环境湿度增大可以使结构的寿命增加；构件所处年平均温度、CO2浓度升高、工作应力增大时其寿命成近似线性下降趋势；在各因素中保护层厚度、混凝土立方体强度对结构寿命的影响最大，因此在一定程度上可以通过增加保护层厚度及混凝土的强度来提高结构寿命。
보호층후도、CO2농도영향계수、배경습도、혼응토립방체강도등인소도영향료결구적내구성수명。본문운용회색관련이론분석료단인소대결구예측수명적영향，병분석료각영향인소대결구탄화수명적민감성。결과표명：보호층후도、혼응토립방체강도、배경습도증대가이사결구적수명증가；구건소처년평균온도、CO2농도승고、공작응력증대시기수명성근사선성하강추세；재각인소중보호층후도、혼응토립방체강도대결구수명적영향최대，인차재일정정도상가이통과증가보호층후도급혼응토적강도래제고결구수명。
Structural durability life of reinforced concrete is affected by many factors, such as thickness of concrete cover, concentration effect coefficient of carbon dioxide, environment humidity, concrete cube strength and so on. In this paper, the effects of single factor and sensitivity of all factors are studied by using grey relation theory. The results show structural life is improved with the growth of show thickness of concrete cover, concrete cube strength and environment humidity; and reduced with the growth of concentration effect coefficient of carbon dioxide, average annual temperature, working stress. The influence of various factors are also different, the influence of thickness of concrete cover and concrete cube strength are greater than other factors , so structural life - time can improved through the increase of protection layer thickness and the strength of concrete.