海工混凝土使用寿命预测研究

Research on Service Life Prediction of Marine Concrete

在前人关于混凝土中氯离子迁移的影响因素的研究成果基础上,以Fick第二定律为基本模型,引入了混凝土中氯离子扩散系数的时间修正因素、吸附修正因素、温度修正因素、应力和裂缝状态修正因素等,结合可靠度理论,建立了海工混凝土寿命预测模型及其计算软件SLPMC,并将其应用于实际工程混凝土的设计计算和寿命预测.

Based on the research results that the chloride ingression in concrete is influenced by many factors, the model for service life prediction of marine concrete is proposed, with the Fick's second law taken as the basic model, and introducing correction factors of exposure time, chloride binding, environment temperature, stress and crack conditions, and combining reliability analysis method. Based on the model the calculation software SLPMC is established. And the service life of some marine concrete constructions in designing is predicted using the SLPMC on the results of this research.