Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Repair of Settled Pile Bent Bridge Foundations with Spun Micro Piles
This article demonstrates an approach for reinforcing bridge’s foundations, which had been settled from scouring, with the use of spun micro piles to substitute the existing piles. The bridge was built 27 years ago crossing Ranae Canal in Phipun District, Nakhon Si Thammarat Province in the southern region of Thailand. The bridge has eight pile-bent foundations. The Department of Rural Roads investigated the bridge in 2020 and found that two foundations in the middle of the channel settled down by 7 and 10 cm from the initial elevation, causing a shift in the bridge’s horizontal alignment. This deflection significantly reduced the capacity of the bridge and would cause danger if it was still opened for traffic. The department examined a few solutions to the problem considering limitations on the construction space, necessity of traffic during the repairing process, cost, and safety during construction, and then decided to reinforce the foundations with spun micro piles. The process began with driving the micro piles around the old foundations and constructing temporary structures to transfer the weight of the bridge to the new piles. The superstructure of the bridge was then lifted using hydraulic jacks against the load-transferring structures to obtain the desired level. The old concrete columns were replaced by the new composite ones. Finally, new reinforced concrete foundations were cast on the micro piles to support the bridge. The result suggested that the spun micro piles were able to support the weight of the bridge and complied with the design criteria and engineering standards.
Repair of Settled Pile Bent Bridge Foundations with Spun Micro Piles
This article demonstrates an approach for reinforcing bridge’s foundations, which had been settled from scouring, with the use of spun micro piles to substitute the existing piles. The bridge was built 27 years ago crossing Ranae Canal in Phipun District, Nakhon Si Thammarat Province in the southern region of Thailand. The bridge has eight pile-bent foundations. The Department of Rural Roads investigated the bridge in 2020 and found that two foundations in the middle of the channel settled down by 7 and 10 cm from the initial elevation, causing a shift in the bridge’s horizontal alignment. This deflection significantly reduced the capacity of the bridge and would cause danger if it was still opened for traffic. The department examined a few solutions to the problem considering limitations on the construction space, necessity of traffic during the repairing process, cost, and safety during construction, and then decided to reinforce the foundations with spun micro piles. The process began with driving the micro piles around the old foundations and constructing temporary structures to transfer the weight of the bridge to the new piles. The superstructure of the bridge was then lifted using hydraulic jacks against the load-transferring structures to obtain the desired level. The old concrete columns were replaced by the new composite ones. Finally, new reinforced concrete foundations were cast on the micro piles to support the bridge. The result suggested that the spun micro piles were able to support the weight of the bridge and complied with the design criteria and engineering standards.
Repair of Settled Pile Bent Bridge Foundations with Spun Micro Piles
Sustain. Civil Infrastruct.
Akhnoukh, Amin (Herausgeber:in) / Kaloush, Kamil (Herausgeber:in) / Elabyad, Magid (Herausgeber:in) / Halleman, Brendan (Herausgeber:in) / Erian, Nihal (Herausgeber:in) / Enmon II, Samuel (Herausgeber:in) / Henry, Cherylyn (Herausgeber:in) / Wachiraprakarnpong, Apichai (Autor:in) / Kraikuan, Juti (Autor:in) / Yu, Wichai (Autor:in)
International Road Federation World Meeting & Exhibition ; 2021 ; Dubai, United Arab Emirates
21.04.2022
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Reinforcement of Scoured Pile Group Bridge Foundations with Spun Micro Piles
| Springer Verlag | 2022
| Engineering Index Backfile | 1931
| TIBKAT | 2012
Piles and pile foundations -- I
| Engineering Index Backfile | 1946
Piles, pile structures and foundations
| Engineering Index Backfile | 1954