Journal
SOILS AND FOUNDATIONS
Volume 52, Issue 3, Pages 562-573Publisher
JAPANESE GEOTECHNICAL SOC
DOI: 10.1016/j.sandf.2012.05.013
Keywords
Caisson foundation; Gravel; In situ test; Lateral loads; Numerical simulation; Winker-beam model (IGC: E4/E12/H1)
Funding
- National Science Council of Taiwan [NSC 100-2221-E-492-017]
- Directorate General of Highways
- Ministry of Transportation and Communication of Taiwan
- National Center for Research on Earthquake Engineering of Taiwan
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This paper presents the results of an in situ lateral load test on a caisson-type foundation of the old Niu-Dou Bridge in Ban County, Taiwan. The caisson was 12 m long and had circular cross-sections whose diameters were 5 m in the upper portion and 4 m in the lower portion. The test site was located on soil with a high gravel content. A site investigation, including laboratory and field tests, was carried out. A six-component Winkler-beam model was applied to simulate the caisson response in the lateral load test. To determine the nonlinear properties of the Winkler springs, a method based on large-scale geotechnical field testing was proposed. With this method, the soil springs could be properly set and the Winkler-beam model could reasonably capture the lateral behavior of the caisson foundation. (C) 2012 The Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved.
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