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随着在役桥梁的逐步老化,对其进行准确的可靠性评估以预测其寿命,从而进行有效的加固改造已显得日益重要。根据桥梁结构实际使用和管理中可能获得的信息不同,采用回归分析、灰色理论、神经网络预测等桥梁剩余寿命预测模型,对西南地区在役桥梁的剩余使用寿命进行预测,并给出了实例计算结果。此项研究成果可为桥梁工程的维修与加固以及重建计划和决策提供更科学的依据。
With the gradual aging of in-service bridges, it is increasingly important to carry out accurate reliability assessment to predict their life expectancy so as to effectively reinforce them. According to the information available in actual use and management of bridge structure, the remaining life of bridge in service in Southwest China is predicted by regression analysis, gray theory, neural network prediction and other prediction models of residual life of bridge, and examples are given result. The results of this research can provide a more scientific basis for the repair and reinforcement of bridge engineering and the reconstruction planning and decision-making.