Papers by Leandro Trautwein
Anais do Congresso de Iniciação Científica da Unicamp, 2015
Anais do Congresso de Iniciação Científica da Unicamp, 2015
Anais do Congresso de Iniciação Científica da Unicamp, 2015
Anais do Congresso de Iniciação Científica da Unicamp, 2015
Aci Structural Journal, 2011
ACI is a technical and educational society dedicated to improving the design, construction, maint... more ACI is a technical and educational society dedicated to improving the design, construction, maintenance and repair of concrete structures.
Proceedings of the Eighth International Conference on Computational Structures Technology, 2006
The main goal of the present work is to present a comparison between two different strategies for... more The main goal of the present work is to present a comparison between two different strategies for the computational simulation of reinforced concrete structures, both using smeared crack models to represent the behavior of the materials. As a first approach, a multidirectional smeared crack model available in DIANA has been adopted along with different softening rules for the cracked materials (brittle, linear, nonlinear of Moelands-Reinhardt and Hordijk). Additionally, the Disturbed Stress Field Model -DSFM has also been adopted to model cracked concrete as an orthotropic material with smeared rotating cracks. The finite element codes DIANA and VecTor2 have been used to evaluate the performance of the different smeared crack models to predict the behavior of reinforced concrete beams subjected primarily to flexure.
REEC - Revista Eletrônica de Engenharia Civil, 2014
The last four decades were important for the Brazilian highway system. Financial investments were... more The last four decades were important for the Brazilian highway system. Financial investments were made so it could expand and many structural solutions for bridges and viaducts were developed. In parallel, there was a significant raise of pathologies in these structures, due to lack of maintenance procedures. Thus, this paper main purpose is to create a short-term monitoring plan in order to check the structural behavior of a curved highway concrete bridge in current use. A bridge was chosen as a case study. A hierarchy of six numerical models is shown, so it can validate the bridge's structural behaviour. The acquired data from the monitoring was compared with the finest models so a calibration could be made.
ACI Structural …, 2011
ACI is a technical and educational society dedicated to improving the design, construction, maint... more ACI is a technical and educational society dedicated to improving the design, construction, maintenance and repair of concrete structures.
Applied Mechanics and Materials, 2013
Concrete is one of the oldest building materials and applying known to humankind. From 1800s, wit... more Concrete is one of the oldest building materials and applying known to humankind. From 1800s, with the advent of Portland cement concrete has taken a prominent place among the construction materials due to large values of strength, durability and versatility it offered compared to other products, allowing the molding of the various architectural forms. Until the early 80s, the modern concrete remained only as a mixture of cement, aggregates and water, however, in recent decades, due to the development of new techniques and products, the concrete has been undergoing constant changes . This article discusses the application of technology of lightweight aggregates for concrete production, for use in building elements such as structural panels or fence. Developed an experimental program for the analysis of concrete, with the primary objective to characterize the properties of the parts in the hardened state. The results showed that the lightweight aggregate concrete with Brazilian expanded clay are extremely suitable for the production of prefabricated elements slender, mainly due to the reduction in density and excellent performance in mechanical properties, especially modulus of elasticity, despite the low toughness of lightweight aggregate.
Applied Mechanics and Materials, 2013
ABSTRACT The aim of this work is to present a tool developed in a multimedia environment of a cil... more ABSTRACT The aim of this work is to present a tool developed in a multimedia environment of a cilitate the understanding of the state of plane stress at an infinite simal element, which is directed to lectures in Mechanics of Materials courses. This multimedia resource was developed in Java 3D API, liked an applet, as it is a simple language whose programs can run on all operating system platforms, using the virtual machineconcept. The multimedia resource determines the strains caused by forces acting in a solid body. Usingthis tool the learning process can be more efficiently, and the view of results at an differential element in the state of plane stress can be easier too.
Applied Mechanics and Materials, 2013
Concrete is one of the oldest building materials and applying known to humankind. From 1800s, wit... more Concrete is one of the oldest building materials and applying known to humankind. From 1800s, with the advent of Portland cement concrete has taken a prominent place among the construction materials due to large values of strength, durability and versatility it offered compared to other products, allowing the molding of the various architectural forms. Until the early 80s, the modern concrete remained only as a mixture of cement, aggregates and water, however, in recent decades, due to the development of new techniques and products, the concrete has been undergoing constant changes . This article discusses the application of technology of lightweight aggregates for concrete production, for use in building elements such as structural panels or fence. Developed an experimental program for the analysis of concrete, with the primary objective to characterize the properties of the parts in the hardened state. The results showed that the lightweight aggregate concrete with Brazilian expanded clay are extremely suitable for the production of prefabricated elements slender, mainly due to the reduction in density and excellent performance in mechanical properties, especially modulus of elasticity, despite the low toughness of lightweight aggregate.
REEC - Revista Eletrônica de Engenharia Civil, 2014
Applied Mechanics and Materials, 2014
Applied Mechanics and Materials, 2013
ABSTRACT The aim of this work is to present a tool developed in a multimedia environment of a cil... more ABSTRACT The aim of this work is to present a tool developed in a multimedia environment of a cilitate the understanding of the state of plane stress at an infinite simal element, which is directed to lectures in Mechanics of Materials courses. This multimedia resource was developed in Java 3D API, liked an applet, as it is a simple language whose programs can run on all operating system platforms, using the virtual machineconcept. The multimedia resource determines the strains caused by forces acting in a solid body. Usingthis tool the learning process can be more efficiently, and the view of results at an differential element in the state of plane stress can be easier too.
REEC - Revista Eletrônica de Engenharia Civil, 2013
ABSTRACT São apresentados resultados experimentais de ensaios em 03 (três) lajes planas de concre... more ABSTRACT São apresentados resultados experimentais de ensaios em 03 (três) lajes planas de concreto armado, de dimensões 3000 x 3000 x 200 mm, com armadura de cisalhamento tipo stud com chapa de aço soldada nas extremidades superiores e inferiores e com pinos soldados nas chapas inferiores. Esta armadura de cisalhamento era posicionada internamente em relação à armadura de flexão. As lajes foram submetidas a um carregamento simétrico, com o objetivo de investigar a eficiência dessa armadura na resistência à punção das lajes. A resistência à compressão do concreto variou de 36,8 a 43,4 MPa, e as lajes tinham uma área central carregada representando um pilar central quadrado de 200 mm de lado. A principal variável foi o diâmetro dos studs que compunham a armadura de cisalhamento. Resultados de carga última, tipo de ruptura, fissuração, flecha e deformações da armadura de cisalhamento são apresentados. Os resultados são comparados com uma laje similar sem armadura de cisalhamento, e com as estimativas de cargas de ruptura das normas ACI 318M (2011), Eurocode 2 (2004) e NBR 6118/2007. Os resultados mostraram que a armadura de cisalhamento utilizada de forma interna à armadura de flexão pode ser eficaz.
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Papers by Leandro Trautwein