The influence of metro operation vibration on single-layer cable net glass curtain wall structure based on frequency method

Zhirong  Shen; Yuze  Yan; Yi  Tao; Zhiwei  Wang

doi:10.59400/sv2252

The influence of metro operation vibration on single-layer cable net glass curtain wall structure based on frequency method

Zhirong Shen College of Civil Engineering, Tongji University, Shanghai 200092, China
Yuze Yan College of Civil Engineering, Tongji University, Shanghai 200092, China
Yi Tao Shanghai Tongji Project Management & Consulting Co., Ltd., Shanghai 200092, China
Zhiwei Wang College of Civil Engineering, Tongji University, Shanghai 200092, China

Article ID: 2252

Keywords: metro operation; single-layer cable net glass curtain wall; frequency method; frequency domain analysis; finite element analysis

Abstract

Using the single-layer cable net glass curtain wall of Siemens Shanghai Center Building A as a case study, the influence of vibrations from two metro lines on the structure was investigated through combination of field measurements with vibration signal analysis, and numerical simulations using finite element analysis. Time-domain data from cable vibrations were converted to frequency-domain data using fast Fourier transform for spectral analysis. The frequencies of the cables under different constraints were calculated based on the linear theory for vibrations of a string. A comprehensive numerical model of the single-layer cable net curtain wall was established for modal analysis. Comparative analysis shows that cables with horizontal floor constraints are highly vibration-sensitive, with metro operations causing high-order modal vibrations and fundamental frequency vibrations in sections between adjacent constraints, leading to glass deformation and damage. Neither metro operation induces the fundamental frequency vibration of the entire structure. Comparative frequency analysis favors theoretical frequency calculations with horizontal constraints for multi-constraint cable frequency analysis.

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Published

2025-01-17

How to Cite

Shen, Z., Yan, Y., Tao, Y., & Wang, Z. (2025). The influence of metro operation vibration on single-layer cable net glass curtain wall structure based on frequency method. Sound & Vibration, 59(1), 2252. https://doi.org/10.59400/sv2252

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