Behavior of Foundations in Sedimentary Soil: Computer Simulations with High-Strain Dynamic Load Test

  • Neile Cristina Andraos Universidade Federal do Paraná – UFPR
  • Gabriella Bevervanço Camargo Universidade Federal do Paraná – UFPR
  • Alessander C. Morales Kormann Universidade Federal do Paraná – UFPR
Keywords: High-strain Dynamic Load Test, Cast-in-place Piles, Impact and Hammer-cushion System.

Abstract

High-strain dynamic load test is a tool for deep foundations quality control by means of instruments which register force and velocity of the strain waves caused by hammer impact. The test verifies load capacity and the foundation’s structural integrity. Application system of strokes has to be determined so that tests in cast-in-place piles could be applied. Current investigation evaluates the influence of impact and hammer-cushion systems by test simulations undertaken in cast-in-place piles. Data bank with ninety piles was used to determine the three model piles: short, medium and long. Assay simulations were undertaken by wave equation method with GRLWEAPTM program, featuring several parameters for impact and hammer-cushion systems. Results show consistency in the expected behavior according to the unidimension wave propagation theories, with an increasingly compression tension according to hammer weight and fall height and a decrease in traction tension according to increase in hammer weight and fall height.

Author Biographies

Neile Cristina Andraos, Universidade Federal do Paraná – UFPR
Docente do curso de Engenharia Civil no Departamento de Construção Civil da Universidade Federal do Paraná – UFPR. E-mail: neileandraos@gmail.com
Gabriella Bevervanço Camargo, Universidade Federal do Paraná – UFPR
Discente do curso de Engenharia Civil no Departamento de Construção Civil da Universidade Federal do Paraná – UFPR. E-mail: ga_bevervanco@hotmail.com
Alessander C. Morales Kormann, Universidade Federal do Paraná – UFPR
Docente do curso de Engenharia Civil no Departamento de Construção Civil da Universidade Federal do Paraná – UFPR. E-mail: alessander@ufpr.br
Published
2010-06-15
Issue
Vol 12 No 1 (2010)
Section
Artigos de Iniciação Científica
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