Dimensionamento de blocos sobre estacas utilizando o conceito de radier estaqueado
Nenhuma Miniatura disponível
Data
2011-08-22
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
The structural sizing pile caps on piles has traditionally been run in simplified manner, disregarding the three-dimensional effect of structural piece. Use the concept of piled cap in
calculating enriches scalability providing an understanding of internal efforts on the basis of a distribution of more realistic reactions in the block. The goal of this work was to check the
differences in structural sizing pile caps using traditional methods and two numerical methods, one based on finite elements and other hybrid that combines finite elements with
elements of the boundary. The main comparison between methods was the internal moment generated in the block after the application of vertical load, for being one of the main
parameters of scaling of the armature. In Brazil the scaling manual methods most used are based on the theory of rods or theory of beams. The method of connecting rods, and rods
considers inside the block, at the bottom, tensile stress that are combated by frame, and method of the beams is calculated as an internal moment found by reaction of piles and the lever arms to the section you want, and then the block is sized like a beam. The numerical methods presented using the concept of piled raft in scale of blocks. In numerical methods have been used DIANA and GARP programs, which provide internal moments throughout the block of three-dimensional shape and thus were made a comparison with the manual method by the theory of beams. Were simulated blocks with 2, 4, 9, 25, 64 and 81 piles with loads applied in different ways for an assessment of the effect of the size of blocks, of the comparisons performed can be observed that in the manual method and numerical methods total found moments are very close, but with a differentiated distribution along the sections of the blocks, which becomes more apparent as it increases the amount of piles per block. For
the manual methods in the center of the block the internal moments are inferior to scaled as piled raft, necessitating an additional frame in this region.
Descrição
Citação
CAMPOS, Denise Vaz de. Design of pile caps using concept raft staked. 2011. 116 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Goiás, Goiânia, 2011.