Vibration-Based Damage Detection Techniques for Health Monitoring of Construction of a Multi-Storey Building

Abstract:

Conducting surveys of multi-storey buildings is a laborious task, because large volumes of visual and instrumental research should be carried out. Reduction of labor costs with an increase in the reliability of information about the state of damage and technical condition is an actual scientific and practical task. One of the ways to solve it is to use non-destructive vibration diagnostic methods. The purpose of carrying out diagnostics with the use of vibration based damage detection methods is to search for damages in structural elements that can cause the deviation of the dynamic parameters of a structure from calculated ones. Determination of the dynamic parameters of the structure, in particular natural frequencies and mode shapes of mechanical systems, is one of the most important tasks that allows obtaining integral information about the state of a structure. This article presents the results of calculations for the localization of slabs defects in a multi-storey building with a transverse crack, span L = 4.5 (m), height H = 0.2 (m), with prestressed reinforcement d = 0.05 (m). Vibration based Damage Index method was used to localize the defect. During the study, reliable localization values of the defect area of the slab were obtained, this indicates that the vibration method for determining the damage index with a sufficient degree of accuracy allowed predicting the site of damage to the structure.

• Periodical: Materials Science Forum (Volume 931)
• Pages: 178-183
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.931.178
• Online since: September 2018
• Authors: Yuriy Y. Shatilov*, Alexander A. Lyapin
• Keywords: Damage Detection, Defect, Finite-Element Method (FEM) Reinforcement, Mode Shape, Natural Frequency, Numerical Experiment, Slabs, Structural Engineering, Structural Health Monitoring, Structural Vibration, Vibration Based Damage Detection

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