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Experimental on the protective performance of column bridge pier anti-scouring device
- Source :
- E3S Web of Conferences, Vol 248, p 01015 (2021)
- Publication Year :
- 2021
- Publisher :
- EDP Sciences, 2021.
-
Abstract
- Because of the problem of local scour caused by the change of the flow structure caused by the water-resistance of the column bridge pier, the theoretical analysis, and indoor water tank test were used to study the effect of installing a new anti-scouring device in front of the bridge pier on the local scour reduction effect; the influence of the main design parameters such as the height of the protective device, the angle of the protective device and the distance from the protective device to the bridge pier on the local scour of the bridge pier was selected, and the optimal parameter design combination was selected. The test results show that: under the same water flow conditions, the maximum scour depth reduction rate of the measuring point under the protection of the protective device is 48.4% to 74.2% compared with the unprotected scour; the reduction rate of the bridge pier is relative to the relative height of the device and the device equivalent. The angle and the distance between the device and the bridge pier are related, and the shock reduction rate decreases with the increase of the flow intensity. In the test range, the ratio of the device height to the water depth is 2/3, the device angle is 60 °, and the distance from the bridge pier is 3. When the diameter of the pier is doubled, the effect of reducing the impact on the pier is the best.
- Subjects :
- Pier
lcsh:GE1-350
Water flow
business.industry
Flow (psychology)
0207 environmental engineering
02 engineering and technology
Structural engineering
Parameter design
01 natural sciences
010305 fluids & plasmas
Shock (mechanics)
Water depth
Column (typography)
0103 physical sciences
Environmental science
020701 environmental engineering
business
Intensity (heat transfer)
lcsh:Environmental sciences
Subjects
Details
- Language :
- English
- ISSN :
- 22671242
- Volume :
- 248
- Database :
- OpenAIRE
- Journal :
- E3S Web of Conferences
- Accession number :
- edsair.doi.dedup.....0b131e867ca32b7f394365e4c9bac554