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Field Measurement and Research on Environmental Vibration due to Subway Systems: A Case Study in Eastern China
- Source :
- Sustainability, Volume 11, Issue 23
- Publication Year :
- 2019
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2019.
-
Abstract
- With the rapid development of subway systems, the negative environmental impacts of vibration induced by subways has gradually become a research hotspot. For the purpose of developing predictive models of vibration and designing effective vibration mitigation systems, continuous field dynamic measurements were conducted simultaneously in a subway tunnel, ground, and building in eastern China, the most prosperous region in China. The characteristics of vibration transmission and attenuation induced by subway were analyzed by statistical analysis of large amounts of measurement data. The results showed that most prominent and visible attenuation of vibration is from the track to the ballast bed in the tunnel, where the ground-borne vibration would quickly decrease exponentially with distance. The results also showed that the measured attenuation value of indoor vibration was approximate 0.76 dB on average between each floor. Moreover, the decay ratio of the vibration increased with the increase in the frequency range. Based on these findings, construction gauge of 20&ndash<br />25 m outside of the tunnel is recommended. In addition, reducing the vibration source excitation intensity is the most effective vibration isolation method, especially by track structural transformation.
- Subjects :
- Ballast
Vibration transmission
Renewable Energy, Sustainability and the Environment
business.industry
Attenuation
Geography, Planning and Development
Vibration source
Eastern china
0211 other engineering and technologies
020101 civil engineering
ground-borne vibration
02 engineering and technology
Structural engineering
Management, Monitoring, Policy and Law
subway
0201 civil engineering
Vibration
Vibration isolation
vibration attenuation
Environmental science
Statistical analysis
business
vibration transmission
vibration isolation design
021101 geological & geomatics engineering
Subjects
Details
- Language :
- English
- ISSN :
- 20711050
- Database :
- OpenAIRE
- Journal :
- Sustainability
- Accession number :
- edsair.doi.dedup.....603ff1bb8451b6b8015182a35d5ae994
- Full Text :
- https://doi.org/10.3390/su11236835