Ambient Test #1

A six story reinforced concrete building was instrumented with 8 tri-axial accelerometers to record ambient vibrations. As part of the seismic retrofit process, the building was cleared while it underwent ambient vibration testing. All non-structural components were removed (partition walls, ceilings, plumbing, etc.). The ambient vibration data gives baseline levels for the building's dynamic properties. These values will be compared to the dynamic properties post retrofit in order to determine the changes that occur from jacketing the columns, adding structural walls, and constructing a mat foundation.

一栋六层钢筋混凝土建筑安装了8个三轴加速度计（tri-axial accelerometers），用于记录环境振动。作为抗震加固过程的一部分，该建筑在进行环境振动测试期间被清空，所有非结构构件（隔墙、天花板、管道系统等）均已移除。环境振动数据为建筑的动力特性提供了基准水平，这些数值将与加固后的动力特性进行比较，以确定柱包裹、增设结构墙及建造筏板基础所带来的变化。