荷载与环境因素耦合作用下结构耐久性研究进展

Recent Advances in Research on Concrete Durability under Simultaneous Action of Load and Other Factors

为了说明荷载对结构耐久性的影响作用,本文分别介绍了荷载与碳化、化学物质侵蚀、水渗透性、冻融循环耦合作用的研究成果。结果发现,与无荷载作用相比,荷载作用下的混凝土结构耐久性能均有不同程度的降低,得出了荷载是耐久性研究中重要影响因素的结论,同时指出需要对不同荷载类型作用下的混凝土碳化深度、硫酸盐侵蚀、水渗透性能、冻融循环性能进行更进一步的研究。

To illuminate the load effect for the structure durability,the durability research of concrete structures under load and material influence factors is introduced,which included carbonation,sulfate attack,chloride penetration and freeze-thawing.The investigation shows that the concrete structures durability are significantly lower under the sustained load than unload.The conclusion is get that the sustained load is the important factor in the concrete research.At the same time,the research of carbonation depth,sulfate attack,chloride penetration and freeze-thawing under different load style is put forwand.