Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Experimental study on stress concentration factors in single and groups of end bearing and floating stone columns
Download
index.pdf
Date
2014
Author
Çekinmez, Zeynep
Metadata
Show full item record
Item Usage Stats
206
views
97
downloads
Cite This
In this study, small scale model tests were performed in order to observe effects of column length and undrained shear strength on settlement reduction ratios at different zones, as well as the stress concentration factor. In these tests different loading conditions, i.e. single stone column loading, unit cell loading and group loading, were studied. Stress carried by stone columns under various foundation pressures were directly measured by soil pressure transducers. Surface and subsurface settlements were measured by dial gauge and potentiometric rulers. Variation of stress concentration factor with time is assessed. Unit cell and group behavior with floating and end-bearing columns are compared. An empirical equation to obtain the group settlements from the unit cell settlements, as a function of normalized column length and normalized foundation pressure is proposed. For infinite pattern of column groups, emipirical relationships between total settlement reduction ratio and undrained shear strength and; stress concentration factor and undrained shear strength are proposed.
Subject Keywords
Shear (Mechanics).
,
Strains and stresses.
,
Columns, Stone.
,
Floating bodies.
,
Structural analysis (Engineering).
URI
http://etd.lib.metu.edu.tr/upload/12617342/index.pdf
https://hdl.handle.net/11511/23585
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Site Specific Relationship for Strain Dependent Shear Modulus and Damping Using In Situ V S and High Strain Cyclic Test Results
Zehtab, Kaveh Hassan; Yılmaz, Mustafa Tolga (2016-08-18)
This study suggests a practical method for estimating site-specific strain dependent shear modulus and damping. The method uses in-situ shear wave velocity measurements and commercial cyclic laboratory tests on higher strains (i.e., 0.5% to 1%) in which the effect of disturbance is less significant. Shear modulus calculated using in-situ shear wave velocity and at higher cyclic shear strain, is used for building a hyperbolic relationship for shear stress and strain. Modified Masing's rule and the experiment...
EXPERIMENTAL INVESTIGATION OF FATIGUE DAMAGE ACCUMULATION IN 1100-AL ALLOY
BILIR, OG (Elsevier BV, 1991-01-01)
The cumulative fatigue damage characteristics of 1100 Al alloy were studied to gain a better understanding of the effects of the loading sequence, the percentage of initial applied load cycles and the stress ratio.
Comparison Of Formulae For Shear Strength Of Unsaturated Soils
Zehtab, Kaveh Hassan; Toker, Nabi Kartal; Ahmadiadli, Mohammad (2012-06-30)
During last 60 years many research studies have been conducted on calculation of shear strength of unsaturated soils and effects of matric suction on it. Several formulae are developed for predicting shear strength of unsaturated soils, based on strength tests on unsaturated soils. A variety of experimental techniques and laboratory equipment are used for unsaturated shear strength characterization. This study discusses the accuracy of shear strength prediction for unsaturated soils with three different for...
Upgrading of slab-column connections using fiber reinforced polymers
Binici, Barış (Elsevier BV, 2005-01-01)
The results of an experimental program on upgrading of reinforced concrete slab-column connections subjected to monotonic shear and unbalanced moment transfer are presented in this study. Externally installed carbon fiber reinforced polymer (CFRP) stirrups acting as shear reinforcement around the slab-column connection area were used with two patterns of CFRP arrangements. It was found that the proposed method resulted in punching shear capacity increases up to 60% relative to the specimen without any stren...
EXPERIMENTAL INVESTIGATION AND PERFORMANCE ANALYSIS OF GASKETED-PLATE HEAT EXCHANGERS
Akturk, Fatih; Sezer Uzol, Nilay; Aradag, Selin; Kakac, Sadik (2015-01-01)
In this study, the thermal and hydrodynamic performance analyses of sa elected gasketed-plate heat exchanger with different number of plates are performed experimentally. A gasketed-plate heat exchanger (GPHE) test set-up is designed and constructed to perform experimental measurements for thermal and hydrodynamic performance analyses of plate heat exchangers. The experiments are performed for an industrial chevron-type plate heat exchanger under different flow conditions for a wide range of Reynolds number...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Z. Çekinmez, “Experimental study on stress concentration factors in single and groups of end bearing and floating stone columns,” Ph.D. - Doctoral Program, Middle East Technical University, 2014.
