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Model vibration tests on piled raft and pile group foundations in dry sand

Vu, A.-T. and Matsumoto, T. and Kenda, K. (2020) Model vibration tests on piled raft and pile group foundations in dry sand. Geotechnical Engineering, 51 (2). pp. 95-102. ISSN 465828

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Abstract

In this research, the authors carried out vibration load tests on piled raft and pile group models to investigate dynamic behaviours of the foundations. Foundation models consisting of 6 piles, with or without batter piles, were used in the experiments. They were pile rafts (6PR and 6BPR) if the raft was in contact with ground surface, while they were pile groups (6PG and 6BPG) if the raft was not in contact with ground surface. To create dynamic load acting on the foundation, a vibro-hammer, placed on the raft, was used. The vibro-hammer can provide vibration load (active shaking) mainly in the vertical direction (called vertical loading) or in the vertical and horizontal directions simultaneously (called combination loading) by rotating two discs of eccentric mass synchronously in opposite directions or the same direction, respectively. Active shaking tests were conducted on 4 types of pile foundation models (6PR, 6BPR, 6PG and 6BPG) in a consistent dry sand ground. The experimental results indicate that the piled rafts are more effective foundation type to decrease settlement and inclination under dynamic loading than the pile groups. © 2020 Southeast Asian Geotechnical Society. All rights reserved.

Item Type: Article
Divisions: Institutes > Institute of Techniques for Special Engineering
Uncontrolled Keywords: Dynamic loads; Foundations; Geotechnical engineering; Hammers; Load testing; Sand; Dynamic behaviours; Dynamic loadings; Foundation models; Foundation types; Pile group foundations; Vertical direction; Vertical loadings; Vibration loads; Piles; dynamic response; loading test; pile group; sand; testing method; vibration
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9009

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