【摘要】 通过工程实际和研究,在已有资料的基础上,提出了砼内钢筋锈蚀的影响因素及钢筋截面积与强度的时变模型,并利用混凝土碳化深度预测模型和抗压强度时变模型,建立了服役钢筋砼桥梁承载能力衰减模型。研究的理论基本上解决了服役桥梁承载力评定和预测等问题,为旧桥的可靠性鉴定评级奠定了基础,同时也为旧桥的剩余寿命预测提供了依据。更多还原

【Abstract】 Based on existing data, influencing factors of reinforcement corrosion was recognized and a time-varying model of cross-section area and strength of steel bar in concrete was proposed. Also, an attenua?tion model of bearing capacity of reinforced concrete bridge was established using forecast model of concrete carbonization depth and time-varying model of compressive strength. The theory in this paper forms the basis for evaluating the bearing capacity, assessing the reliability, and forecasting remaining life of reinforced con?crete bridges in service.更多还原