CAJ | 학술논문

结合已有预应力混凝土结构氯离子侵蚀模型，提出应力水平和环境因素（包括温度和湿度等）对在海洋大气区自由氯离子扩散的影响作用。利用连云港港区环境资料和码头预应力混凝土横梁氯离子浓度检测结果，得出服役39年后的预应力混凝土结构内的氯离子浓度分布状况及扩散参数。该地区氯离子浓度分布出现两个波峰，对应氯离子浓度峰值mmax1>mmax2。在第二个波峰后，自由氯离子浓度分布曲线平滑下降，同时验证了该改进模型适用于现场实际工程。
결합이유예응력혼응토결구록리자침식모형，제출응력수평화배경인소（포괄온도화습도등）대재해양대기구자유록리자확산적영향작용。이용련운항항구배경자료화마두예응력혼응토횡량록리자농도검측결과，득출복역39년후적예응력혼응토결구내적록리자농도분포상황급확산삼수。해지구록리자농도분포출현량개파봉，대응록리자농도봉치mmax1>mmax2。재제이개파봉후，자유록리자농도분포곡선평활하강，동시험증료해개진모형괄용우현장실제공정。
With the existing chloride ion erosion model for prestressed concrete structures has been used.It's discovered that chloride ion diffusion are effect by environmental factors(including temperature and humidity and so on.)and the stress level in the marine atmosphere zone.Our investigation of the external environment in the Lian-yun-gang Port and the chloride ion concentration monitoring has showed that the pre-concrete structures which is service for 39 years has two extremes of its chloride ion distribution curve.There are two peaks in these chloride ion concentration distribution curve,as can be seen the corresponding chloride ion concentration values are mmax1>mmax2.Af-ter the second peak,the free chloride ion concentration distribution curve smoothing down,and the diffusion parameters verify the model can be used in the marine environment.