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通过典型海洋潮差区的现场试验,分析了弯曲荷载对受压区和受拉区混凝土氯离子浓度及对流区深度的影响,研究弯曲荷载水平与不同受力区域混凝土氯离子扩散系数的关系。结果表明:弯曲荷载对混凝土氯离子扩散性能有较大影响,但对氯离子侵蚀的对流区深度影响不大;弯曲荷载水平与混凝土氯离子扩散系数之间的关系可以用二次多项式表述。
Through the field test in typical tidal range, the influence of bending load on chloride concentration and convection zone depth of concrete in compression zone and tension zone was analyzed, and the relationship between bending load level and chloride diffusion coefficient of concrete in different stress regions was studied. The results show that the flexural load has a great influence on the chloride ion diffusion of concrete, but it has little effect on the depth of convection of chloride ion erosion. The relationship between the flexural load and the chloride ion diffusion coefficient of concrete can be described by quadratic polynomial.