Abstract
A prediction method in the frequency domain is proposed for predicting the vibrations of historical timber building induced by traffic loads. The modal parameters of a structure are identified using a double-confirmation analysis method based on the autospectrum. Then, the vibration responses of the building are calculated using a limited number of measurement records by inputting the calculated vibration information for the foundation of the updated building model. The proposed method is used to predict the vibrations of the Buddhist sutra depositary at Yangzhou Zhunti Temple. Comparing the results shows that the vibration responses of a structure under traffic loads can be effectively predicted in the relevant frequency bands.
Highlights
Wooden structures played a vital role in Chinese architectural history
The vibration prediction and evaluation of historical timber buildings subjected to ambient traffic loads are necessary so that vibration isolation measures can be applied to limit the damage to these buildings and to extend their service life
The dynamic characteristics of structures have been measured using field tests based on the ambient vibration exactions [1, 2, 5]; the identified modal parameters were used to update the finite element (FE) model of the target structure [8, 13,14,15, 21], which was in turn used to develop the prediction methods
Summary
Wooden structures played a vital role in Chinese architectural history. Wooden architecture is a treasure that combines structural form and architectural art, and ancient Chinese wooden architecture made excellent contributions to promoting the development of historic timber buildings. The dynamic characteristics of structures have been measured using field tests based on the ambient vibration exactions [1, 2, 5]; the identified modal parameters were used to update the finite element (FE) model of the target structure [8, 13,14,15, 21], which was in turn used to develop the prediction methods. Crispino and D’Apuzzo [17] measured road traffic-induced vibrations in a heritage building in Naples and compared the results to a prediction model. Rainieri et al [7] proposed a valuable tool for the indirect noninvasive structural assessment of historical structures using the combination of ambient vibration tests and model refinement.
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