Author
Seylabi, E. E., Kurtuluş, Aslı, Stokoe II, K. H., Taciroglu, E.
Publication Date
2017-09
Publication Place
-
Springer International Publishing
Subject
Axisymmetric wave propagation, Soil–pile interaction, Pile impedance function, Radiation damping, Material damping, Shear wave velocity, Perfectly matched layers
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1570-761X
Record ID
6dad60da-71e9-4478-ad9c-187dae4e17c1
Library Location
Civil Engineering
Date
2017-09
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
Data recorded during a field test involving an instrumented drilled shaft under vertical excitations are examined in order to (1) extract the soil–pile system’s dynamic impedance, and (2) to evaluate the small-strain shear stiffness and material damping properties of the surrounding soil. Numerical simulations of steady-state vibration tests with an axisymmetric finite element model are used for back-calculating the in-situ small-strain dynamic soil properties (i.e., shear stiffness and material damping ratio). Also, a numerically computed impedance function is compared with known analytical solutions and that obtained through direct processing of the field test data. These analyses revealed that the discrete numerical model can successfully reproduce the measured responses of the shaft-soil system, and yield its frequency-dependent impedance function as well as equivalent small-strain dynamic soil properties. The validated numerical model presented here offers a detailed view of the vertical dynamic responses of drilled shafts within the small-strain range, and can be used for design and analysis of future field tests.
DOI
10.1007/s10518-017-0099-5
Cilt
15
