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Previous issue date: 2013-12-10 / An experimental study has been conducted to investigate the behavior of
continuous flight auger (cfa) bored piles and metalic driven H-section piles under
lateral loading in cohesionless soils. The piles were tested in two different areas at
the same site. Both areas consisted of a 3-m thick compacted superficial fill of pure
fine sand, underlain by layers of naturally occurring pure fine-thick sand. Fills are
differentiated by the relative densities which were compressed, 45% e 70%,
respectively. Each area received one identical pair of cfa piles and two identical pairs
of H-piles. A static lateral loading test was performed in each pair of piles. In this
work, the pile load test results are reported and interpreted. The horizontal coefficient
of subgrade reaction was determined from the results of the loading tests and
compared with values determined by correlations based on penetration resistance
index of SPT tests (NSPT). p-y formulations describing the static behavior of the piles
were applied to the problem under evaluation. Back Analyses were made through
theoretical and experimental p-y curves for obtaining input parameters for the
analytic models, among which the coefficient of horizontal reaction. The soil pile
system horizontal loading at rupture was determined by the theoretical methods and
the results were compared with the experimental results, checking its validity / Um estudo experimental foi realizado para investigar o comportamento de
estacas escavadas h?lice cont?nua e estacas cravadas met?licas submetidas a
carregamentos laterais em areia. As estacas foram ensaiadas em duas ?reas
diferentes no mesmo local. Ambas as ?reas eram compostas por um aterro
superficial de 3 m de espessura de areia fina, seguido de camadas naturais de areia
fina a grossa. Os aterros diferenciam-se pela densidade relativa com que foram
compactados, 45% e 70%, respectivamente. Cada ?rea recebeu um par id?ntico de
estacas h?lice cont?nua e dois pares id?nticos de estacas met?licas com perfil H .
Em cada par de estacas foi executada uma prova de carga est?tica. Neste trabalho,
os resultados das provas de carga s?o apresentados e interpretados. O coeficiente
de rea??o horizontal do solo foi determinado atrav?s dos resultados das provas de
carga e comparado com valores obtidos a partir de correla??es baseadas no ?ndice
de resist?ncia ? penetra??o do ensaio SPT (NSPT). Curvas p-y foram constru?das
para prever o comportamento de estacas submetidas a carregamentos horizontais.
Retro an?lises foram efetuadas atrav?s das curvas p-y te?ricas e experimentais
para obten??o de par?metros de entrada para os modelos anal?ticos, dentre os quais
o coeficiente de rea??o horizontal. A carga de ruptura do sistema solo estaca foi
determinada atrav?s de m?todos te?ricos e os resultados foram comparados com os
resultados experimentais, verificando sua validade
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/14852 |
| Date | 10 December 2013 |
| Creators | Ara?jo, Arthur Gomes Dantas de |
| Contributors | CPF:92610927487, http://lattes.cnpq.br/6737841388506901, Costa, Carina Maia Lins, CPF:82818819415, http://lattes.cnpq.br/6483888857335060, Sales, Maur?cio Martines, CPF:33123608115, http://lattes.cnpq.br/2033708685029423, Costa, Yuri Daniel Jatob? |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Civil, UFRN, BR, MEC?NICA DAS ESTRUTURAS, ESTRUTURAS DE CONCRETO E ALVENARIA E MATERIAIS E PROCESSOS CONSTRUTIVOS |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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