Effect of temperature on the modal parameters of continuous rigid frame bridge

IF 8.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Developments in the Built Environment Pub Date : 2025-03-01 Epub Date: 2025-02-24 DOI:10.1016/j.dibe.2025.100631

Yang Yang , Md Sulayman Hossen , Giuseppe Lacidogna , Wenming Xu , Ibna Kawsar , Junbo Sun , Shameem Hossain

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Abstract

The temperature effect on modal parameters such as natural frequencies, mode shapes, and damping ratios is critical for precisely determining the health of a bridge. This is the first study investigating how temperature affects the modal properties of a large continuous rigid-frame bridge. The vibration experiment data was collected and analyzed 39 times within a year's maximum and minimum temperatures. The frequency has been analyzed using the Fast Fourier transform (FFT) algorithm. Mode shape and damping ratio were analyzed using MATLAB software using the covariance-driven stochastic subspace identification method (SSI-COV) and the logarithmic decrement method. Due to the unique shape of the bridge, numerical simulations were performed using Midas Civil software to validate the results. Moreover, the correlation coefficients of frequencies and damping ratios at different temperatures have been evaluated by this observation, which will assist in identifying the large continuous rigid frame bridge's health at various temperatures.

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温度对连续刚构桥模态参数的影响

温度对固有频率、模态振型和阻尼比等模态参数的影响对于精确确定桥梁的健康状况至关重要。这是首次研究温度如何影响大型连续刚构桥的模态特性。在一年的最高和最低温度范围内收集和分析了39次振动实验数据。利用快速傅里叶变换（FFT）算法对频率进行了分析。利用MATLAB软件，采用协方差驱动随机子空间识别法（SSI-COV）和对数递减法对振型振型和阻尼比进行分析。由于桥梁的独特形状，使用Midas Civil软件进行了数值模拟以验证结果。此外，通过这一观察，还评估了不同温度下频率和阻尼比的相关系数，这将有助于识别大型连续刚构桥在不同温度下的健康状况。

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.