Aderência aço-concreto: análise numérica dos ensaios pull-out e APULOT

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Investigação do potencial dos ensaios APULOT e pull-out para estimativa da resistência a compressão do concreto

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Determinação de parâmetros reológicos de concretos através do ensaio de abatimento de tronco de cone modificado: estudo de caso

Pós-graduação em Engenharia Mecânica - FEIS

Avaliação do comportamento de pilares de concreto de alta resistência: simulação numérica utilizando o código de cálculo CASTEM-2000

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Escoamentos em meios porosos: uma análise teórica e experimental dos efeitos dos esforços capilares provocados por percolação de água em elementos de alvenaria

Pós-graduação em Engenharia Mecânica - FEG

O papel da professora no desenvolvimento humano da criança pré-escolar sob o enfoque da teoria histórico-cultural

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estilo e metalinguagem na literatura de Monteiro Lobato

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização do jardim japonês de Ribeirão Preto - SP e germinação de sementes de pinheiros característicos do estilo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desenvolvimento e avaliação de uma miniestação ecoeficiente de tratamento de esgoto e reuso de águas, com sistemas registrador queimador, para baixa vazões de biogás e cogeração de energia

Pós-graduação em Engenharia Mecânica - FEG

Aderência aço-concreto: simulação numéricadosensaios de arranchamento pull-out e APULOT usando o programa ATENA

The bond between steel and concrete is essential for the existence of reinforced concrete structures, as both materials act together to absorb structural strain. The bond phenomenon is considered to be complex regarding many factors that affect it. Several types of bond tests have been proposed over years. One is the modified proposed of pull-out test, which was elaborated by Lorrain and Barbosa [1] called APULOT test (Appropriete pull-out-test). Based on experimental results obtained by Vale Silva[2] either by conventional pull-out tests, or by modified pull-out test, APULOT, seeks to know the numeric behavior of bond steel-concrete through a numerical simulation using a calculation code ATENA which is based on the Finite Element Method (FEM). The numerical simulation provided better evaluate the stress distribution and cracking that occurs during the test, thereby becoming a valuable tool to support the experimental project that aims to validation, validation partially or not recommend the modified bond test steel-concrete - APULOT test - as quality control test of structural concrete. The numerical results showed good representation compared to experimental results.

Poço de infiltração para controle de enchentes na fonte: avaliação das condições de operação e manutenção

This study investigated the following aspects regarding a soakaway, i.e. an infiltration well: i) entrance filter device; ii) permeability of the geotextile; and iii) emptying time. The 3.6 m³ infiltration well drains a roof area of 241.8 m². The entrance device is made up of layers of sand, gravel and geotextile set on a metal structure. The concrete rings that form the lateral walls were covered with geotextile, and bricks were laid between the soil and concrete rings. The infiltration well remained in operation during the entire testing period, and specific events were simulated to measure the emptying time. Permeability and fine particle tests were carried out after eight months of operation. Samples of geotextile taken from the bottom, the walls and the entrance device presented average permeability reductions of approximately 50.7%, 7.7% and 21.2%, respectively. The sand in the entrance device retained around 34.8% of fine particles and the gravel retained 0.13% in the same period. The infiltration rate was approximately 34.7 mm/h. The R2 coefficient for measured and calculated times was 0.97.

Análise teórica e experimental do comportamento de vigas de alvenaria estrutural armada sujeitas à flexão simples

Pós-graduação em Engenharia Civil - FEIS

A local-global scheme for tracking crack path in three-dimensional solids

This paper aims to contribute to the three-dimensional generalization of numerical prediction of crack propagation through the formulation of finite elements with embedded discontinuities. The analysis of crack propagation in two-dimensional problems yields lines of discontinuity that can be tracked in a relatively simple way through the sequential construction of straight line segments oriented according to the direction of failure within each finite element in the solid. In three-dimensional analysis, the construction of the discontinuity path is more complex because it requires the creation of plane surfaces within each element, which must be continuous between the elements. In the method proposed by Chaves (2003) the crack is determined by solving a problem analogous to the heat conduction problem, established from local failure orientations, based on the stress state of the mechanical problem. To minimize the computational effort, in this paper a new strategy is proposed whereby the analysis for tracking the discontinuity path is restricted to the domain formed by some elements near the crack surface that develops along the loading process. The proposed methodology is validated by performing three-dimensional analyses of basic problems of experimental fractures and comparing their results with those reported in the literature.

A percepção de crianças e adolescentes sobre cenas de violência urbana

The article presents part of an evolutionary study regarding the ideas of children and adolescents on urban violence. The study included 40 subjects aged between 6 and 15; consisting of 10 subjects aged 6, 10 aged 9, 10 aged 12, and 10 aged 15. All subjects were enrolled in two public schools, one located in the interior of São Paulo’s State and the other in greater São Paulo. The subjects underwent three methodological procedures: a clinical interview, the drawing of a picture, and the analysis of a movie. In this paper we present data taken from the movie presentation, a silent cartoon which contained scenes of violence. The results indicate that subjects have difficulty in understanding the phenomenon of violence and its complexity. Subjects associated violence only with the most visible and concrete situations or conflicts, and they cannot identify the different types of violence contained in the drawings. The analysis and the theoretical references are based on the Piagetian perspective on the construction of social knowledge. Pedagogical implications based on evolutionary studies and the comprehension of the processes performed to the understanding of the social reality will be presented in this article, as well.

Psicogênese da Noção de Violência: um estudo evolutivo a partir da perspectiva piagetiana

The paper presents part of an evolutionary study regarding the ideas of children and adolescents on urban violence. The study included 40 subjects aged between 6 and 15; consisting of 10 subjects aged 6; 10 aged 9; 10 aged 12; and 10 aged 15. All subjects were enrolled in two public schools, one located in the interior of São Paulo’s State and the other in greater São Paulo. The subjects underwent three methodological procedures: a clinical interview, the drawing of a picture, and the analysis of a movie. In this paper, we present the data obtained from the application of the clinical interview, specifically those concerning the main theme: “definition of violence.” The results indicate that most subjects have difficulties in understanding and defining the phenomenon of violence and its complexity. They tend to associate it only to the most visible and concrete situations or conflicts, focusing on a basic level of understanding of the social reality. The analysis and the theoretical references are based on the Piagetian perspective about the construction of social knowledge. Pedagogical implications based on the evolutionary psychogenic studies as well as the understanding of the processes covered for the understanding of social reality are also presented in the article.