标准摘要
[中文适用范围]: 本国际标准提供了评估桥梁和高架桥动态试验和调查结果的方法。 它补充了 ISO 14963 中给出的进行测试的程序,并考虑了 - 动态测试的目标, - 数据分析和系统识别技术, - 桥梁建模,以及 - 测量数据的评估。 注1:评估可能试图定义所检查的每种振动模式的所有动态特性,即频率、刚度、振型和阻尼,以及它们随运动幅度的非线性变化。 这些可以提供有关结构动态特性的信息,以便与设计中假设的动态特性进行比较,或者作为状态监测或系统识别的基础。 本国际标准中考虑的动态测试不能替代静态测试。 本国际标准为桥梁生命周期内进行的测量评估提供指导。 考虑的生命周期阶段包括:a) 施工期间和调试之前,b) 调试试验期间,c) 桥梁整个使用寿命期间的特定时期,以及 d) 桥梁退役之前。 本国际标准适用于公路、铁路和人行桥梁和高架桥(在施工和运营期间)以及其他工程,只要它们证明其应用是合理的。 本国际标准应用于特殊结构(斜拉桥或悬索桥)需要考虑工程的特殊特性进行特定测试。 注 2:在本国际标准中,“桥梁和高架桥”统称为“桥梁”。 仅当需要区分它们时才使用术语“高架桥”。 [外文原描述]: ISO 18649:2004 provides methodology for the evaluation of results from dynamic tests and investigations on bridges and viaducts. It complements the procedure for conducting the tests as given in ISO 14963 and considers -- the objectives of the dynamic tests, -- the techniques for data analysis and system identification, -- the modelling of the bridge, and -- evaluation of the measured data. The dynamic tests considered in ISO 18649:2004 do not replace static tests. ISO 18649:2004 gives guidance on the assessment of measurements carried out over the life cycle of the bridge. The stages of the life cycle that are considered are -- during construction and prior to commissioning, -- during commissioning trials, -- during specified periods throughout the life of the bridge, and -- immediately prior to decommissioning the bridge. ISO 18649:2004 is applicable to road, rail and pedestrian bridges and viaducts (both during construction and operation) and also to other works, provided that they justify its application. The application of this International Standard to special structures (cable-stayed or suspension bridges) requires specific tests that take into account the particular characteristics of the work.
英文名称Mechanical vibration — Evaluation of measurement results from dynamic tests and investigations on bridges