The influence of connecting pile cap-column in the mechanisms of break in the two pile caps

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Abstract

Abstract The paper analyzes the two pile caps with partially embedded socket and subject a center load. Three models were experimentally tested, varying the type of conformation of the column and walls of the socket, with a smooth, the other rough, and a monolithic two pile cap, used for reference. The roughening of the column-socket interface was examined with the aim of verifying the difference of the distribution of compressive and tensile stresses in the strut an tie model used for design. The experimental test to show that the two pile caps with conformation rough of the column and walls of the socket, support more load in comparison with two pile caps with smooth of the column and walls of the socket. Both however underperformed the monolithic two pile cap, with values of 66% and 36% respectively.Resumo O trabalho analisa o comportamento de blocos sobre duas estacas com cálice parcialmente embutido, submetidos à ação de força centrada. Foram ensaiados experimentalmente três modelos, variando-se o tipo de conformação das paredes dos pilares e do cálice, sendo uma lisa, outra rugosa e um bloco monolítico, utilizado para referência. A rugosidade na interface pilar-cálice foi analisada, com o intuito de verificar a diferença das distribuições dos fluxos de tensões de compressão e tração no modelo de biela e tirante empregado no dimensionamento e, consequentemente, o comportamento estrutural. As análises experimentais constataram que o modelo com conformação rugosa das paredes do cálice e do pilar apresentou capacidade resistente superior ao modelo com conformação lisa. Ambos, porém tiveram desempenho inferior ao bloco monolítico, com valores de 66% e 36% respectivamente.

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APA

MESQUITA, A. C., ROCHA, A. S., DELALIBERA, R. G., & SILVA, W. A. D. (2016). The influence of connecting pile cap-column in the mechanisms of break in the two pile caps. Revista IBRACON de Estruturas e Materiais, 9(6), 856–882. https://doi.org/10.1590/s1983-41952016000600004

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