Abstract

The assessment of existing road bridges as parts of infrastructure networks is required in consideration of their deterioration and age. Advanced monitoring and management tools are mainly used for landmark bridges while the decision making process for small to medium bridges, which constitute the majority of the bridge network, mainly relies on condition assessment based on experience and conservative analysis related to design codes. In the analysis of the load-carrying capacity of theses bridges, loads imposed by the passing traffic are predominant due to their variable nature and level of uncertainties. The research presented in this paper outlines the value of additional traffic data, collected with both traffic counters and Weigh-in-Motion (WIM) method in the scope of assessment procedures for these bridges. Adequate processing of collected traffic data is crucial for subsequent extrapolation of maximum load effects on a particular bridge over a certain period in time. By taking into account all related costs, the purpose of this paper is to prove the benefits of employing traffic load monitoring data in structural assessment and subsequent decision-making process in service life management of bridges.

摘要

考虑到它们的老化和老化，需要对作为基础设施网络一部分的现有路桥进行评估。先进的监视和管理工具主要用于地标桥，而构成桥梁网络大部分的中小型桥梁的决策过程则主要依赖于基于经验的条件评估和与设计规范相关的保守分析。在对这些桥梁的承载能力进行分析时，由于其可变的性质和不确定性水平，过往交通施加的载荷占主导地位。本文提出的研究概述了在这些桥梁的评估程序范围内，使用交通计数器和动态称重（WIM）方法收集的附加交通数据的价值。对于随后在特定时间段内对特定桥梁的最大负载影响进行外推，对收集到的交通数据进行充分处理至关重要。通过考虑所有相关成本，本文的目的是证明在桥梁使用寿命评估中，在结构评估和后续决策过程中使用交通负荷监控数据的好处。