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Numerical and experimental analysis of two pile caps submitted to the action of a load centered and eccentric

Grant number: 05/00182-5
Support Opportunities:Regular Research Grants
Start date: July 01, 2005
End date: June 30, 2006
Field of knowledge:Engineering - Civil Engineering - Structural Engineering
Principal Investigator:José Samuel Giongo
Grantee:José Samuel Giongo
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The research has as objective to analyze and to argue the behavior of two pile caps submitted to the action of a load centered and eccentric. A nonlinear three-dimensional numerical analysis of two pile caps was developed. The numerical analysis included the cracking and the influence of the reinforced in the structural behavior of the pile caps. By the numerical analysis, it was possible to perceive the behavior and the geometric form of the strut, with this understand the model strut-and-tie applied to the two pile caps. The geometry observed in the numerical models analyzed at first differs from the usually suggested by some authors. This project proposes to realize an experimental test of pile caps to observe the geometry of the strut. The instrumentation will be located in the faces of the pile caps with spaced strain-gages in order to occupy good part of the width and, consequently, indicate its geometries. The experimental analysis of two pile caps submitted to the load eccentric would allow observing the behavior of the strut and tie that differ from the one observed when the load is centered. Also the efficiency of the hooks of the reinforced bar will be analyzed, therefore, in the experimental analysis of pile caps already developed, and considering numerical analysis already made, it was verified that the hooks can be omitted without damage of the structural security of the pile caps. For treating of procedure defined in the project, and taking advantage of the experimental analysis to be realized, it was understood that this requirement can be analyzed and that the results will bring benefits to the project. (AU)

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