Towards SHM of Medium-Rise Buildings in Non-Seismic Areas
10th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII 10) 2021
Līga Gaile, Jānis Šliseris, Lāsma Ratnika

In countries with low seismic hazard vibration-based monitoring methods usually are not expected. Especially it holds for the structures that cannot be excited by the wind. A potential application of these methods could be to monitor vibration characteristics of mass house buildings to detect illegal removal of walls or widening of existing openings during flat renovation works or to monitor an effect on the structural integrity of building to such structural changes. Mainly it is vital for buildings close or even beyond their intended design life. This research studies appropriate ambient vibration sources other than seismic that could be useful for structural health monitoring purposes of medium-rise buildings. It includes the experimental study of normal-traffic induced ground vibration spectral characteristics, vibration amplitude dissipation for different soil conditions in real applications. The vibration response levels of medium-rise buildings are studied to define reference requirements for Micro Electromechanical Systems (MEMS) accelerometer sensor parameters. Use of the MEMS sensors in structural health monitoring is a possibility to reduce the overall cost of the vibration sensing system. It is found that currently ambient vibration testing of medium-rise buildings can be done only by conventional seismometers due to the very low vibration amplitudes, but the development of MEMS technologies for this application is just in the beginning phase. In this work, experimental data from several other studies were compiled to extract typical fundamental frequency ranges for buildings of up to 16 floors. It was found that the typical range of fundamental frequencies for buildings less than 16 stories is approximately 0.7Hz -12.5Hz.

Atslēgas vārdi
Structural health monitoring (SHM); Vibration-based methods (VBM); Medium-rise buildings; Normal-traffic spectra; MEMS; Modal data

Gaile, L., Šliseris, J., Ratnika, L. Towards SHM of Medium-Rise Buildings in Non-Seismic Areas. No: 10th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII 10), Portugāle, Porto, 30. jūn.-2. jūl.., 2021. Porto: University of Porto, 2021, 1.-8.lpp.

Publikācijas valoda
English (en)
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