Abstract The observation of an existing structure supporting a particular maximal load provides a direct constraint on the possible range of values its resistance capacity may take. The implied update of structural reliability allows monitoring and maintenance planning to be done from a risk optimal perspective. Existing proof load-based reliability updating techniques require multiple numerical computations which are often too cumbersome for routine use. By building on the assumptions of the first order reliability method, this study develops and validates a first order reliability updating approach which is computationally efficient. The resulting formulation is shown to be applicable to reliability problems tractably considered using the first order reliability method. This method is illustrated for two example structures: a reinforced concrete beam forming part of a highway bridge to which traffic loading data is applied, and a granular embankment forming a seawall on a shoreline mining operation for which the phreatic surface level is monitored.

中文翻译：

---

使用载荷测量有效地更新结构可靠性

摘要 对支持特定最大负载的现有结构的观察直接限制了其抵抗能力可能取值的可能范围。结构可靠性的隐含更新允许从风险优化的角度进行监控和维护计划。现有的基于证明载荷的可靠性更新技术需要多次数值计算，这对于日常使用来说通常过于繁琐。通过建立在一阶可靠性方法的假设基础上，本研究开发并验证了计算效率高的一阶可靠性更新方法。结果证明适用于使用一阶可靠性方法可处理的可靠性问题。此方法针对两个示例结构进行了说明：