Inter-Story Drift Ratio Detection of High-Rise Buildings Based on Ambient Noise Recordings

The inter-story drift ratio (IDR) is a crucial parameter in structural health monitoring to judge the safety, stability, and serviceability of buildings. Real-time, continuous, widely applicable detection on IDRs essential. However, current methods present some challenges conducting such detection, including adverse effects from weather, requirement for large amounts space, fragile instruments. This study proposes an alternative method overcome these defects measure evaluate conditions using ambient noise recordings. Ambient random continuous wave signal with various sources modified by its propagating medium. Taking Zhonghe Building campus Tongji University, Shanghai, China, as example, 24 three-component seismometers were deployed capture record continuously 20 November 2021 9 December 2021. Using analysis polarization parameters during building’s most dangerous time ordinary time, deflection curve, IDRs, harmful calculated. computed maximum was 0.06 m, IDR 1.140×10−3, −2.573×10−4. These results compared relevant specifications it found that structure good condition. high applicability continuity real underscores need further research achieve localized real-time system.