The Luiz Bandeira Bridge is located along the Portuguese national road EN333-3, breaching the valley of the Vouga River, just northeast of the small village Sejães, in the district of Oliveira de Frades. It is considered to be the oldest concrete bridge in use in Portugal, and one of the oldest in Europe. Since this bridge is at risk of disappearing due to a construction of a dam, the Department of Civil Engineering of the University of Minho decided to launch a comprehensive study of Luiz Bandeira Bridge, in an attempt to preserve the memory of the past cataloguing the heritage for future reference. These studies include historical, geometrical and damage surveys, the physical and chemical characterization of existing structural materials, the assessment of the reinforcement detailing, dynamic characterization by determining the main frequencies and vibration modes and safety level. This work presents a comprehensive overview of the most important results of these studies.
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机译：路易斯·班德拉（Luiz Bandeira）桥位于葡萄牙国道EN333-3上，与奥利维拉德弗雷德斯（Oliveira de Frades）地区小村庄Sejães东北的沃加河（Vouga River）河谷相望。它被认为是葡萄牙使用的最古老的混凝土桥梁，也是欧洲最古老的桥梁之一。由于这座桥因修建水坝而有可能消失的风险，因此，Minho大学的土木工程系决定对Luiz Bandeira桥进行全面研究，以保留对遗产编目的记忆备查。这些研究包括历史，几何和损伤调查，现有结构材料的物理和化学表征，钢筋细部评估，通过确定主要频率和振动模式以及安全等级进行动态表征。这项工作对这些研究的最重要结果进行了全面概述。
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