This article presents the use of the analytic signal procedure for processing the large volume of structural vibration data recorded in forced vibration tests. The analytic signal facilitates the computationally laborious task of extracting the steady-state amplitude for each response measure of interest from the recorded accelerations throughout the building at each operated frequency of the forced vibration source. The implementation of the signal processing procedure introduced here is illustrated in deriving the acceleration–frequency response curves from the forced vibration test of the first permanently instrumented building in Turkey. This reinforced concrete building, subsequently strengthened with cast-in-place reinforced concrete infill shear walls, is located in close proximity to the North Anatolian Fault. Later, system identification of the building yields the in situ structural system dynamic properties for the first translational and torsional vibration modes, which are compared with those identified from the ambient vibrations of the building recorded following its forced vibration test. The analytic signal procedure is a convenient tool for the rapid and correct derivation for mode shapes and associated frequencies and damping ratios from forced vibration testing of structural systems.

本文介绍了使用分析信号程序来处理在强制振动测试中记录的大量结构振动数据。该分析信号使计算上很费力的任务很容易，即从所记录的整个建筑物在强制振动源的每个操作频率下的加速度中，为每个感兴趣的响应度量提取稳态振幅。从土耳其第一座永久性测量建筑物的强制振动测试得出的加速度-频率响应曲线，说明了此处介绍的信号处理程序的实现。这座钢筋混凝土建筑紧邻北安纳托利亚断层，随后用现浇钢筋混凝土填充剪力墙进行了加固。后来，建筑物的系统识别产生了第一平移和扭转振动模式的原位结构系统动态特性，并将其与从建筑物的环境振动中识别出的那些特性进行了比较，这些环境振动是在进行强制振动测试后记录的。解析信号过程是从结构系统的强制振动测试中快速，正确导出模态形状以及相关频率和阻尼比的便捷工具。