الفهرس 
THE SUBGRADE REACTION MODELOnly 14 pages are availabe for public view
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Abstract
Methods of analysis of laterally loaded piles may be divided
into two main groups the subgrade reaction method and the
elastic method In this thesis these two methods have been
adopte~ and compared to a case study to verify the validity of
each for practical use,and a parametric study has been conducted
to show the effect of all relevant parameters.
For the subgrade reaction model, a refined.element that
realizes soil-pile interaction along the entire length of the
pile has been presented using three methods for nonlinear
analysis, depending on the type of data available.
For the elastic model a more rational model has been
presented assuming the soil to be a three-dimensional , elastic
material with nonlinear , stess-dependant soil modulus and taking
into consideration the effect of soil tension and local yield.
A complete set of charts has also been developed to enable
the designer to solve any problem of laterally loaded piles with
different head, conditions and subjected to several cases of
loading in accordance with soil type.