Influence of scour depth and flow velocity field on large-diameter pier group pile foundations
Sea-crossing bridges face critical challenges due to scour, which can destabilize foundations. This study investigates the scour characteristics of the large-diameter main pier of the Haiwen Bridge, with a pile diameter of 4.3 meters. Seabed changes were monitored over 630 days using field tests and...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2024-11-01
|
| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1492861/full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846151012918755328 |
|---|---|
| author | Junfeng Shi Changhai Han Huijuan Guo Kaiwen Yu Kang Han |
| author_facet | Junfeng Shi Changhai Han Huijuan Guo Kaiwen Yu Kang Han |
| author_sort | Junfeng Shi |
| collection | DOAJ |
| description | Sea-crossing bridges face critical challenges due to scour, which can destabilize foundations. This study investigates the scour characteristics of the large-diameter main pier of the Haiwen Bridge, with a pile diameter of 4.3 meters. Seabed changes were monitored over 630 days using field tests and numerical simulations. The study analyzed the relationship between flow velocity and scour depth, revealing that the maximum recorded scour depth was 3.65 meters at the upstream side. A linear regression model, developed from 75 sets of field data, produced a formula to estimate maximum local scour depth. Validation against field measurements showed a strong correlation, with the calculated values deviating by less than 10% from observed data. The findings indicate that upstream scour pits were 1.5 times wider and deeper than those downstream, while a shallow triangular scour zone, extending 1.2 times the pile diameter, formed downstream. Recommendations for scour protection include hydrological considerations, particularly on the upstream side and areas lacking sediment sources. |
| format | Article |
| id | doaj-art-0bba83d73a93414fb30fa33fd2652cc5 |
| institution | Kabale University |
| issn | 2296-7745 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj-art-0bba83d73a93414fb30fa33fd2652cc52024-11-28T04:20:23ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-11-011110.3389/fmars.2024.14928611492861Influence of scour depth and flow velocity field on large-diameter pier group pile foundationsJunfeng Shi0Changhai Han1Huijuan Guo2Kaiwen Yu3Kang Han4Nanjing Hydraulic Research Institute, Nanjing, ChinaNanjing Hydraulic Research Institute, Nanjing, ChinaCollege of Hydraulic and Hydroelectric Engineering, Hohai University, Nanjing, ChinaNanjing Hydraulic Research Institute, Nanjing, ChinaNanjing Hydraulic Research Institute, Nanjing, ChinaSea-crossing bridges face critical challenges due to scour, which can destabilize foundations. This study investigates the scour characteristics of the large-diameter main pier of the Haiwen Bridge, with a pile diameter of 4.3 meters. Seabed changes were monitored over 630 days using field tests and numerical simulations. The study analyzed the relationship between flow velocity and scour depth, revealing that the maximum recorded scour depth was 3.65 meters at the upstream side. A linear regression model, developed from 75 sets of field data, produced a formula to estimate maximum local scour depth. Validation against field measurements showed a strong correlation, with the calculated values deviating by less than 10% from observed data. The findings indicate that upstream scour pits were 1.5 times wider and deeper than those downstream, while a shallow triangular scour zone, extending 1.2 times the pile diameter, formed downstream. Recommendations for scour protection include hydrological considerations, particularly on the upstream side and areas lacking sediment sources.https://www.frontiersin.org/articles/10.3389/fmars.2024.1492861/fullscour depthflow velocitylarge-diameter piergroup pile foundationnumerical simulation |
| spellingShingle | Junfeng Shi Changhai Han Huijuan Guo Kaiwen Yu Kang Han Influence of scour depth and flow velocity field on large-diameter pier group pile foundations Frontiers in Marine Science scour depth flow velocity large-diameter pier group pile foundation numerical simulation |
| title | Influence of scour depth and flow velocity field on large-diameter pier group pile foundations |
| title_full | Influence of scour depth and flow velocity field on large-diameter pier group pile foundations |
| title_fullStr | Influence of scour depth and flow velocity field on large-diameter pier group pile foundations |
| title_full_unstemmed | Influence of scour depth and flow velocity field on large-diameter pier group pile foundations |
| title_short | Influence of scour depth and flow velocity field on large-diameter pier group pile foundations |
| title_sort | influence of scour depth and flow velocity field on large diameter pier group pile foundations |
| topic | scour depth flow velocity large-diameter pier group pile foundation numerical simulation |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1492861/full |
| work_keys_str_mv | AT junfengshi influenceofscourdepthandflowvelocityfieldonlargediameterpiergrouppilefoundations AT changhaihan influenceofscourdepthandflowvelocityfieldonlargediameterpiergrouppilefoundations AT huijuanguo influenceofscourdepthandflowvelocityfieldonlargediameterpiergrouppilefoundations AT kaiwenyu influenceofscourdepthandflowvelocityfieldonlargediameterpiergrouppilefoundations AT kanghan influenceofscourdepthandflowvelocityfieldonlargediameterpiergrouppilefoundations |