Experimental and numerical investigation of vibrations in over-track scale model buildings

Zhi, Guoliang; Xu, Xin; Guo, Tong; Chen, Zhenyu; Zhang, Minte

doi:10.1016/j.jobe.2023.107538

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…Amplification of floorboard vibration has also been mentioned in the literatures [35,36]. In addition, in a recently published literature [37], the first natural frequency of a concrete floorboard was calculated by modeling and numerical methods at around 30 Hz, and the subsequent vibration response indicated a maximum vibration level at the natural frequency. A generally accepted view is that the floorboard resonates under the excitation of the vibration source and that the maximum vibration level occurs at the response frequency of the floorboard.…”

Section: Conversion Resultsmentioning

confidence: 89%

Evaluation of indicators of railway-induced annoying vibration based on building measurements developed by TOD: a discussion

Zhang,

Liu

et al. 2024

Phys. Scr.

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The main negative impact of the residential buildings located on the cover structure of a Transit Oriented Development (TOD) metro depot is that residents would suffer from the train-induced annoying vibrations. Arguments accordingly arose on the possibility of evaluating indicators controversy for this application that acceleration data was more captured in the past while velocity would be more related to structure born noise. Therefore, this paper provided a relative comparison based on a measurement campaign that both velocity and acceleration sensors were installed together at the same time. The collected vibration accelerations and velocities are analyzed and discussed using the methods of transmission loss, coherence, and time and frequency domain analysis. The results indicated that even there was no differ-ence for identifying the resonance frequency of structure, but the transit mobility and human annoyance evaluation were obviously different by using velocity or accelera-tion. Attempts to establish a relationship between the two indicators using the calcu-lus method failed because they showed the largest error at the peak frequency at the same vibration level, which would have affected the evaluation results and the judgment on the choice of mitigation measures.

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Section: Conversion Resultsmentioning

confidence: 89%

Evaluation of indicators of railway-induced annoying vibration based on building measurements developed by TOD: a discussion

Zhang,

Liu

et al. 2024

Phys. Scr.

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“…The increasing demand for structural inspections, focusing on safety [13], durability [14,15], and comfort [16,17], makes the intelligent inspection of UAVs an inevitable trend in health monitoring processes [18]. The development of UAV technology has provided formidable technical support for this demand, including improved stability [19], enhanced wind resistance [20], increased load capacity [21], extended endurance [22], strengthened obstacle avoidance capability [23], etc.…”

Section: Introductionmentioning

confidence: 99%

A Novel Debonding Damage Identification Approach of Hidden Frame-Supported Glass Curtain Walls Based on UAV-LDV System

Zheng,

Guo,

Zhi

et al. 2024

Applied Sciences

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This study introduces a novel Unmanned Aerial Vehicle-mounted (UAV-mounted) Laser Doppler Vibrometer (LDV) system for detecting debonding damage in Hidden Frame-Supported Glass Curtain Walls (HFSGCW). The established system enables UAVs to transport the LDV to high altitudes for operation. The vibration signals acquired by the UAV-LDV system are decomposed into different energy bands by wavelet packet analysis, and then the occurrence and location of the damage are identified by the Sum of Squared Differences (SSD) of the wavelet packet bands’ energy. This paper investigates the potential factors affecting the performance of the Unmanned Aerial Vehicle-Laser Doppler Vibrometer (UAV-LDV) system, including the arrangement of measuring points, measuring distance, noise level, and wind speed through the first-order natural frequency, the normalized frequency response functions, and the SSD indicator. Experimental and simulation results confirm the effectiveness of the UAV-LDV system, highlighting its advantages over traditional methods by offering remote, non-contact, and efficient debonding detection. This method not only indicates the presence of the damage, as traditional indicators do, but also pinpoints the exact location of it, ensuring safety and cost-effectiveness in high-rise inspections. The proposed method and indicator offer advantages in terms of convenience, visualization, and efficiency. The study discusses the impact of measurement point arrangement, measuring distance, noise levels, and wind speed on the system’s performance. The findings demonstrate that while the UAV-LDV system introduces new capabilities in rapid and reliable structural damage assessment, operational challenges such as wind and noise levels significantly influence its accuracy.

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Investigation of Structure-Borne Noise Propagation Characteristics in a Novel Double-Story High-Speed Railway Station

Zhi,

Chen,

Guo

et al. 2023

J. Vib. Eng. Technol.

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Experimental and numerical investigation of vibrations in over-track scale model buildings

Cited by 4 publications

References 28 publications

Evaluation of indicators of railway-induced annoying vibration based on building measurements developed by TOD: a discussion

Evaluation of indicators of railway-induced annoying vibration based on building measurements developed by TOD: a discussion

A Novel Debonding Damage Identification Approach of Hidden Frame-Supported Glass Curtain Walls Based on UAV-LDV System

Investigation of Structure-Borne Noise Propagation Characteristics in a Novel Double-Story High-Speed Railway Station

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