Location
Arlington, Virginia
Date
14 Aug 2008, 7:00 pm - 8:30 pm
Abstract
The man-made island of Kansai International Airport is located 5 km offshore in Osaka bay and the water depth at the point is about 20 m. Thickness of the sediments beneath the island is several hundred meters, including 20 m of very soft Holocene clay layer. Huge amount of soil had been reclaimed layer over layer and the total thickness is up to 34 to 45 m. Therefore, large amount of settlement is inevitable and the average settlement forecast in the 2nd phase island over the 60 years period from the start of reclamation work is 18 m. In this paper, design and construction of 2nd phase underpass structure is discussed. The overview of construction of the airport island and settlement prediction is described first, then the idea of constructing the under water level structure while it was still above water level is introduced. The design concept of following the large displacement and method of displacement prediction is described next and verification with survey and evaluation is concluded at last.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
6th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2008 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Fujimoto, Masaru; Tabata, Takechiho; Emura, Tsuyoshi; and Nakamichi, Masato, "Construction of Mass Concrete Structure Utilizing Ground Settlement from Underpass Construction in the 2nd Phase Kansai International Airport Project" (2008). International Conference on Case Histories in Geotechnical Engineering. 3.
https://scholarsmine.mst.edu/icchge/6icchge/session09/3
Construction of Mass Concrete Structure Utilizing Ground Settlement from Underpass Construction in the 2nd Phase Kansai International Airport Project
Arlington, Virginia
The man-made island of Kansai International Airport is located 5 km offshore in Osaka bay and the water depth at the point is about 20 m. Thickness of the sediments beneath the island is several hundred meters, including 20 m of very soft Holocene clay layer. Huge amount of soil had been reclaimed layer over layer and the total thickness is up to 34 to 45 m. Therefore, large amount of settlement is inevitable and the average settlement forecast in the 2nd phase island over the 60 years period from the start of reclamation work is 18 m. In this paper, design and construction of 2nd phase underpass structure is discussed. The overview of construction of the airport island and settlement prediction is described first, then the idea of constructing the under water level structure while it was still above water level is introduced. The design concept of following the large displacement and method of displacement prediction is described next and verification with survey and evaluation is concluded at last.
