Behavior of Laterally Loaded Large-Section Barrettes
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 129, Issue 7
Abstract
A barrette is a large cross section rectangular pile. Due to dependence of the flexural stiffness of the rectangular section on its orientation and the nonlinear behavior of barrette materials, loading direction affects the lateral resistance of the barrette. Recently, full-scale lateral load tests were conducted on two barrettes in Hong Kong, one (DB1) with a cross section of 2.8 m by 0.86 m and a length of 51 m and the other (DB2) with a cross section of 2.7 m by 1.2 m and a length of approximately 30 m. This paper aims to investigate the response of laterally loaded large-section barrettes based on the load tests, to simulate the response of the two test barrettes, and to study the influence of loading direction on the lateral response of barrettes. Nonlinear curves for soils and nonlinear stress–strain relations for barrette concrete and reinforcement are used to simulate the lateral response of the test barrettes considering five loading directions. The simulations were able to capture the apparently different behaviors before and after cracking of the barrette section. Sudden increases of displacement and rotation under a small lateral load increment and reduced depths of load transfer in the ground are predicted when the barrette section cracked. Based on this study, the direction of the resultant horizontal displacement is different from the loading direction if the barrette is not loaded along the major or minor axis of the cross section.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 129 • Issue 7 • July 2003
Pages: 639 - 648
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Nov 26, 2001
Accepted: Sep 6, 2002
Published online: Jun 13, 2003
Published in print: Jul 2003
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