Détail de la notice
Titre du Document
Cyclic pile load testing: Loading system and instrumentation
Auteur(s)
LU T. D. ; MILLER V. G. ; FISCHER J. A.
Résumé
The scope, concepts, methodology, and details of a load application system and instrumentation for the successful operation of a series of cyclic pile load tests are described. The purposes of the pile tests on an instrumented H-pile were to evaluate the dynamic behavior of piles under cyclic loading conditions for seismic analyses and design of a structure supported on piles. The scope of the pile load tests included a static vertical, cyclic vertical, and cyclic lateral loading, with a sustained constant vertical load. A major requirement of the cycle testing was to apply a controlled varying load intensity to the pile in a specific wave shape at a specific frequency. To fulfill this requirement, an automated closed loop loading system, which consisted of an electronic-electromechanical control system interfaced with hydraulic loading components, was developed. An instrumentation program was implemented to measure the static and cyclic response of the test pile to include (a) bending moments and axial compression of the pile during driving; (b) loads, moments, angular rotation, and deflections of the pile during testing; and (c) the configuration of pile after driving and after each increment of load application.
Editeur
American Society for Testing and Materials
Identifiant
ISSN : 0066-0558 CODEN : ASTTA8
Source
ASTM special technical publication A. 1979, n° 670, pp. 435-450 [16 pages]
Langue
Anglais
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