Mechanical vibration and shock — Guidelines for dynamic tests and investigations on bridges and viaducts
机械振动与冲击——桥梁和高架桥动态试验和调查指南
发布日期:
2003-12-01
ISO 14963:2003为桥梁和高架桥的动态测试和调查提供了指南。它根据构造和使用对测试进行分类,指出单个结构部件和整个结构的调查和控制类型,列出激励和测量所需的设备,并参考信号处理、数据呈现和报告的合适方法对调查技术进行分类。
ISO 14963:2003提供了动态测试的一般标准。这些可以提供关于结构的动态行为的信息,该信息可以作为状态监测或系统识别的基础。ISO 14963:2003中详述的动态测试不能替代静态测试。
测试可以寻求定义所检查的每个振动模式的所有动态特性(即。e.频率、刚度、振型和阻尼)及其随运动振幅的非线性变化。
ISO 14963:2003适用于公路、铁路和人行天桥和高架桥(在施工和运营期间),也适用于其他工程(或工程类型),前提是其特殊结构证明其应用是合理的。
将ISO 14963:2003应用于特殊结构(斜拉桥或悬索桥)需要考虑工程特殊特征的特定测试。
ISO 14963:2003 provides guidelines for dynamic tests and investigations on bridges and viaducts. It classifies the testing as a function of construction and usage, indicates the types of investigation and control for individual structural parts and whole structures, lists the equipment required for excitation and measurement, and classifies the techniques of investigation with reference to suitable methods for signal processing, data presentation and reporting.
ISO 14963:2003 provides general criteria for dynamic tests. These can supply information on the dynamic behaviour of a structure that can serve as a basis for condition monitoring or system identification. The dynamic tests detailed in ISO 14963:2003 do not replace static tests.
The tests may seek to define all of the dynamic characteristics of each mode of vibration examined (i.e. frequency, stiffness, mode shape and damping) and their non-linear variation with amplitude of motion.
ISO 14963:2003 is applicable to road, rail and pedestrian bridges and viaducts (both during construction and operation) and also to other works (or types of works), provided that their particular structure justifies its application.
The application of ISO 14963:2003 to special structures (stayed or suspension bridges) requires specific tests which take into account the particular characteristics of the work.