Analysis of pile caps designed to support columns of complex geometry

Authors

DOI:

https://doi.org/10.18830/issn.1679-0944.n26.2020.04

Keywords:

Strut and Tie Model; Pile Caps; Columns; Numerical Analysis

Abstract

The present work has the purpose of studying the behavior of piles caps to support columns of complex geometry. It is evaluated if the simplified designed of columns with complex geometry, using the Strut and Tie Method, can be adopted by replacing the complex geometry of the column to a square section, a routine that is frequently used and surrounded by doubts at offices of structural engineering. Numerical analyzes were performed for three columns formats (Rectangular, L and C) and two piles caps with five and nine piles. In the analysis of the different types of geometries, it was verified that the consideration of complex geometry generated a homogeneous distribution of stresses in the piles caps, resulting a lower tension fields and consequently lower rates of reinforcement when compared with the square section equivalent. Finally, for the piles caps with complex geometry columns, it was verified that the simplification of the complex geometry column by an equivalent square section can be considered in favor of security taking into account the higher quantity of reinforcement, validating the usual routine adopted in the structural offices.

Downloads

Download data is not yet available.

References

ADEBAR, P.; KUCHMA, D.; COLLINS, M. P. Strut-and-Tie Models for the Design of Pile Caps: An Experimental Study. ACI Structural Journal, v.87, n.1, p.81-92, 1990.

ACI COMMITTEE 318. Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-2019). Detroit, MI: ACI Comitee 318, 2019.

ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS. NBR 6118: Projeto de estruturas de concreto - Procedimento. Rio de Janeiro: ABNT, 2014.

AUTODESK. Autodesk Revit 2018 User´s Manual. Disponível em http://help.autodesk.com/view/RVT/2018/PTB/

BLEVOT, J.; FRÉMY, R. Semelles Sur Pieux. Annales de L’institut Tecnique Du Bâtiment et des Travaux Publics, Paris, v.20, n. 230, p. 224-273, 1967.

CHAN, T. K.; POH, C. K. Behaviour of Precast Reinforced Concrete Pile Caps. Construction and Building Materials, n.14, pp. 73-78, 2000.

COMPUTERS AND STRUCTURES INC (CSI). Analysis reference manual: For SAP2000, ETABS, SAFE and CSiBridge. Berkeley, California, USA. 2013.

DELALIBERA, R. G. Análise numérica e experimental de blocos de concreto armado sobre duas estacas submetidos à ação de força centrada e excêntrica. 2006, 332. Tese (Doutorado em Engenharia de Estruturas). Universidade de São Paulo, São Carlos, 2006.

IYER, P. K.; SAM, C. Three-Dimensional Analysis of Pile Caps. Computers and Structures, v.42, n.3, pp. 395-411, 1992.

MIGUEL, G. M. Análises experimental e numérica de blocos sobre três estacas. 2000, 242. Tese (Doutorado em Engenharia de Estruturas). Universidade de São Paulo, São Carlos, 2000.

SAM, C.; IYER, P. K. Nonlinear Finite Element Analysis of Reinforced Concrete Four-Pile Caps. Computers & Structures, v.57, n.4, pp.605-622, 1995.

SCHÄFER, K.; SCHLAICH, J. Design and Detailing of Structural Concrete Using Strut-and-Tie Models. The Structural Engineer, v. 69, n. 06, p.113-125, 1991

SOUZA, R. A. Concreto Estrutural: Análise e dimensionamento de elementos com descontinuidade. 2004, 379. Tese (Doutorado em Engenharia). Universidade de São Paulo, São Paulo, 2004.

SOUZA, R. A.; BITTENCOURT, T. N. Non-Linear Analysis of Four-Pile Caps. Revista IBRACON de Estruturas, v. 02, p. 310-319, 2006.

SOUZA, R. A; KUCHMA, D. A. ; PARK, J. ; BITTENCOURT, T. N. Non-Linear Finite Element Analysis of Four-Pile Caps Supporting Columns Subjected to Generic Loading. Computers and Concrete, an International Journal (Print), v. 4, p. 363-376, 2007

SOUZA, R. A.; KUCHMA, D.; PARK, J. W.; BITTENCOURT, T. Adaptable strut-and-tie model for design and verification of four-pile caps. ACI Structural Journal, v. 106, n. 2, p. 142”“150, 2009.

TQS INFORMÁTICA. CAD/FUNDAÇÕES - Manual Teórico (Versão 20.7.11). São Paulo, São Paulo, Brasil, 2017.

Published

2020-05-28

How to Cite

Alves de Souza, R., Bavaresco, D., Mouta Trautwein, L., & Palharini Junior, D. (2020). Analysis of pile caps designed to support columns of complex geometry. Paranoá, 13(26), 48–66. https://doi.org/10.18830/issn.1679-0944.n26.2020.04

Issue

Section

Dossiê de Tecnologia, Ambiente e Sustentabilidade

Similar Articles

<< < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 > >> 

You may also start an advanced similarity search for this article.