الفهرس 
Chapter (1) IntroductionOnly 14 pages are availabe for public view
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Abstract
The safety of the buildings depends on both the efficiency of the established foundations and the ability of the soil, which should endure the resulting loads from building analyses. Egypt has witnessed in recent years a remarkable economic revival which has cast a shadow on the real estate investment in Egypt leaving a significant mutation in the building construction. As a result of this renaissance estate, the emergence of high-rise buildings where the shallow foundations fail to transfer the resulting loads safely to the soil. Therefore, the deep foundation are a must to carry the mega loads resulting from such structures. Piles are structural elements that made of steel, concrete or timber, they are used to transfer loads from super-structure to the competent soil layer through the toe of pile and the friction along the shaft piles. governorate), can be illustrated by using the results of pile load test. Numerical approaches are amongst the promising tools that can be adopted to assess the bearing capacity of C.F.A piles. The objective of this research is to study theoretically load-displacement behaviour of bored piles at different locations in Gharbia governorate, based on fully-scale pile load test results. The study aims to perform a total survey of the bearing capacity of bored piles in delta region of Egypt which contains cities such as Tanta, Zifta, Samannoud, Al-Mahalla Al-Kubra, Alsanta, Qu-tour, Kafr El-zayat and Bassyun, which carried out with the aid of numerous software such as (2D PLAXIS, version 8.2), which depend upon elastic perfectly-plastic finite element models, as well as (All Pile, version 7; SHAFT, version 8) which are relied on (t-z and q-w relations) analysis curves, by collecting the data of pile tests for (C.F.A piles) of different sites in delta zone. In this thesis, we will review all aspects of the loading pile test, both in terms of implementation according to the Egyptian code and the measurements and how to register them. Finally, the methods of analyzing the results have provided an opportunity to infer the results of the loading tests for the piles from different areas in Gharbia governorate. The present study aims at evaluating the theoretical equations found in the Egyptian code of practice , which are used to calculate the maximum ultimate bearing capacity of piles with diameters less than 60 cm using numerical analysis by the program PLAXIS. In addition, the research showed that there is a convergence between the bearing capacity of the piles calculated in terms of the infinite limits calculated from the results of the tests of the rigging of the piles in the delta region up to 88% of the bored piles. The results demonstrate that the ultimate pile capacity is mobilized at settlement equal to 2% of pile diameter, which is in agreement with the ECP values for small diameters. from this conclusion, we can link the results of the load tests to the piles and compare them with their estimates of the Egyptian code by providing the results of the nonlinear regression analysis based on the above.