A influência da ligação pilar-bloco nos mecanismos de ruptura de blocos de fundação sobre duas estacas

Detalhes bibliográficos
Ano de defesa: 2015
Autor(a) principal: Mesquita, Adelson Cândido lattes
Orientador(a): Delalibera, Rodrigo Gustavo lattes
Banca de defesa: Delalibera, Rodrigo Gustavo, Silva, Wellington Andrade da, Oliveira, Marcos Honorato de
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Goiás
Programa de Pós-Graduação: Programa de Pós-graduação em Engenharia Civil (EEC)
Departamento: Escola de Engenharia Civil - EEC (RG)
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/5317
Resumo: The proposed dissertation aimed to experimental studies and computational modeling of the behavior of two pile caps, with sockets embedded, subjected to the center load. Models varying the type of conformation of the column and walls of the cup were adopted. This variable was chosen because it was found that for glasses partially embedded blocks with the choice of smooth or rough wall changes significantly the distribution of the flows of compressive stress and tensile thus modifying the strut and tie model using in the design. Thus, through the investigation of this variable, we analyzed the influence of the conformation of the walls connecting the structural behavior of the pile cap. Features such as diameters of piles, pillar dimensions, geometry of the blocks and reinforcement ratio were not considered variables, so that there were no differences in the formation of fields and stress paths. The experimental part of this dissertation was based on the characterization of the materials that make up the parts (concrete and steel), and the construction and testing three two pile caps, one reference (monolith), with rough and connection with smooth connection. Through trials, it was found that the obtained pile cap with rough connection performance equal to 66% of the monolithic pile cap, while pile cap binding obtained with smooth performance of only 36%. In the numerical step, numerical simulations were performed using the ANSYS ® (SYStem Analyser - ANSYS, INC, version 14.0) program, based on the Finite Element Method (FEM). Considered behavior no-linearity of concrete and steel, and the influence of reinforcement in structural behavior of the pile caps. Will also checked the variation of the experimental and theoretical results with the lattice model used in design, beyond the strut and tie model.The proposed dissertation aimed to experimental studies and computational modeling of the behavior of two pile caps, with sockets embedded, subjected to the center load. Models varying the type of conformation of the column and walls of the cup were adopted. This variable was chosen because it was found that for glasses partially embedded blocks with the choice of smooth or rough wall changes significantly the distribution of the flows of compressive stress and tensile thus modifying the strut and tie model using in the design. Thus, through the investigation of this variable, we analyzed the influence of the conformation of the walls connecting the structural behavior of the pile cap. Features such as diameters of piles, pillar dimensions, geometry of the blocks and reinforcement ratio were not considered variables, so that there were no differences in the formation of fields and stress paths. The experimental part of this dissertation was based on the characterization of the materials that make up the parts (concrete and steel), and the construction and testing three two pile caps, one reference (monolith), with rough and connection with smooth connection. Through trials, it was found that the obtained pile cap with rough connection performance equal to 66% of the monolithic pile cap, while pile cap binding obtained with smooth performance of only 36%. In the numerical step, numerical simulations were performed using the ANSYS ® (SYStem Analyser - ANSYS, INC, version 14.0) program, based on the Finite Element Method (FEM). Considered behavior no-linearity of concrete and steel, and the influence of reinforcement in structural behavior of the pile caps. Will also checked the variation of the experimental and theoretical results with the lattice model used in design, beyond the strut and tie model.