Modelling and Integration of Spatial Time-Dependent Variability in Structural Reliability Analysis

本项目涉及日益重要的实际问题的一些理论方面，即对日益恶化的基础设施的剩余安全和可使用寿命进行现实评估。它使用随机结构力学中的前沿技术来模拟钢筋混凝土结构中由于点蚀而产生的空间变异性。然后将其扩展到与时间相关的域，以反映恶化过程。这些都是根据项目中产生的实验数据进行校准的。同时，开发了一种新的技术，将这些空间模型结合到时变结构可靠性分析程序中。研究结果将加强基础设施决策的工程风险评估。

This project deals with some theoretical aspects of the increasingly important practical problem of realistic assessment of the remaining safe and serviceable life of deteriorating infrastructure. It uses cutting-edge techniques in stochastic structural mechanics to model spatial variability due to pitting corrosion in reinforced concrete structures. This is then extended to the time dependent domain to reflect deterioration processes. These are calibrated to experimental data generated in the project. In parallel, a novel technique is developed to incorporate these spatial models in procedures for time dependent structural reliability analysis. The outcomes will enhance engineering risk assessment for infrastructure decision-making.