Support for centrifuge testing was provided by the National Science Foundation (Grant CMS-9702744) and the Pacific Earthquake Engineering Research Center (Grant SA2394JB) (Dickenson, P.I.). Support for the recent analysis of the test results was provided by the National Science Foundation (Grant CMMI-1761712) and the Deep Foundations Institute (Grant 171126) (Khosravifar, P.I.).
Journal of Geotechnical and Geoenvironmental Engineering
Lateral loads, Piling (Civil engineering), Soil liquefaction, Bridges -- Earthquake effects, Earthquake resistant design
Five dynamic, large-scale centrifuge tests on pile-supported wharves were used to investigate the time- and depth-dependent nature of kinematic and inertial demands on the deep foundations during earthquake loading. The wharf structures in the physical experiments were subjected to a suite of recorded ground motions and imposed superstructure inertial demands on the piles. Partial to full liquefaction in loose sand resulted in slope deformations of varying magnitudes that imposed kinematic demands on the piles. It was found that the wharf inertia and soil displacements were always in phase during the critical cycle when bending moments were at their maximum values. The test results were analyzed to provide the relative contributions of peak inertial loads and peak soil displacements during critical cycles, and the data revealed the depth dependency of these factors. The results of this study are used in a companion paper to provide recommendations for the design of pile-supported wharves subjected to foundation deformations.
© Copyright the author(s)
Souri, Milad; Khosravifar, Arash; Dickenson, Stephen E.; Schlechter, Scott; and McCullough, Nason, "Pile-Supported Wharves Subjected to Inertial Loads and Lateral Ground Deformations. I: Experimental Results from Centrifuge Tests" (2022). Civil and Environmental Engineering Faculty Publications and Presentations. 668.