Deep Beams
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Optimized design of RC deep beams based on performance metrics applied to strut and tie model and in-plane stress conditions
Abstract Deep beams do not behave according to classical beam theory. The nonlinearity of strain distribution within these elements requires application of strut and tie models (STM) or other alternatives to evaluate the complex stress field. Although the design of these elements is a common task for structural engineers, limited research is found on assessi
Lat. Am. j. solids struct.. Publicado em: 22/08/2019
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2. Evaluation of bulk-fill systems: microtensile bond strength and non-destructive imaging of marginal adaptation
Abstract The objective of this study was to investigate microtensile bond strength (MTBS) and interfacial adaptation (IA) of bulk-fill restorative systems bonded to dentin in Class-I-preparations. Box-shaped preparations (4-mm-long, 3-mm-wide, 2-mm-high) made in extracted molars, and Teflon matrix with the same dimensions positioned over the occlusal surface
Braz. oral res.. Publicado em: 06/08/2018
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3. Analysis and Design of Reinforced Concrete Deep Beams by a Manual Approach of Stringer-Panel Method
Abstract D-regions are defined by its non-linear strain distribution over a cross section. Deep beams are an example of D-regions, as most of its load is usually directly delivered to supports by arch mechanism. The present paper focus on the Stringer-Panel Method (SPM), an alternative procedure to some well-known methods for designing this type of structure
Lat. Am. j. solids struct.. Publicado em: 2016-06
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4. Shear Strengthening of RC Deep Beams with Sprayed Fiber-reinforced Polymer Composites (SFRP): Part 2 Finite Element Analysis
AbstractThis paper presents the finite element analysis conducted on SFRP strengthened reinforced concrete (RC) deep beams. The analysis variables included SFRP material (glass and carbon), SFRP thickness (3 mm and 5 mm), SFRP configuration and strength of concrete. The externally applied SFRP technique is significantly effective to enhance the ultimate load
Lat. Am. j. solids struct.. Publicado em: 2015-07
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5. Effects of CFRP retrofit on impact response of shear-deficient scaled reinforced concrete beams
An experimental procedure is carried out to investigate response features of semi-deep reinforced concrete (RC) beams with dominant static shear failure subjected to low-velocity impact dynamic load both in intact and retrofitted cases. Built specimens have scaled geometry and material properties preserving physical similarity with full-scale members and are
Lat. Am. j. solids struct.. Publicado em: 2015-01
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6. Strut and tie modeling for RC short beams with corroded stirrups
Corrosion of steel reinforcement is one of the major problems that shorten the service life of reinforced concrete (RC) structures. Steel stirrups, due to their location as an outer reinforcement, are more susceptible to corrosion problems and damage. However, there is limited research work in the literature on the effects of stirrup corrosion on the shear s
Lat. Am. j. solids struct.. Publicado em: 2014
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7. Dose rate influence on deep dose deposition using a 6 MV x-ray beam from a linear accelerator
Linear accelerators used in radiation therapy treatments usually provide the capability of irradiating with different dose rates. The medical physicist may choose arbitrary the dose rate to use, although the relative biological effectiveness (RBE) varies with this physical parameter. In this work the measurements of absorbed dose of the x-ray beams from a Va
Brazilian Journal of Physics. Publicado em: 2009-06
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8. Interação solo-estrutura em edifícios com fundação profunda: método numérico e resultados observados no campo / Soil-structure interaction in buildings with deep foundation: numerical method and results observed in field
Design of concrete structures for multi-story buildings with deep foundation is considered in this work, taking in account the soil-structure interaction. This interaction is analysed with a numerical method where the superstructure (slabs, beams, and columns), and the foundation structural elements (blocks and piles) are considered a unique structure, model
Publicado em: 2009
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9. FINITE ELEMENTS WITH SPLINE FUNCTIONS APPLIED TO STRUCTURAL DYNAMICS AND INSTABILITY / ELEMENTOS FINITOS COM FUNÇÕES SPLINE PARA INSTABILIDADE E DINÂMICA DE ESTRUTURAS
The present work presents a subparametric finite element model with spline displacement functions, implemented for static, dynamic and instability analysis of folded plates, thin-walled beams, box girders, and elongated structures such as bridges and structural shapes. A drilling degree of freedom (rotation about an axis perpendicular to the plane of the ele
Publicado em: 2008
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10. Lugar é laço: o saber profundo nas comunidades goianas de Cibele e Caiçara
Deep knowing is the conceptual matrix of this reflection, based on the agreement of that the process to learn and to teach is not restricted to the school, neither is exclusive fruit of the scientific rationality. For communities to know deep the citizens of the towns of Cibele and Caiçara are called, small agroupments of people near to the city of Itapuran
Publicado em: 2006
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11. Efeito da associação composito-materiais resilientes sobre a resistencia da união dentina/composito em modelos experimentais bi e tridimensionais
T he aim of this in vitro study was to assess the effect of different { resin composites and elastic layers on resin/dentin bond strength on " the buccal wall of Class I cavities. Ninety-six caries-free third molars were ground flat to expose the dentin surface under running water. Class I cavities (C-factor = 4.5, 4 mm mesial-distal, 3 mm buccal-lingual and
Publicado em: 2003
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12. Some aspects of the effect soil structure interaction for multistory buildings on deep foundations / Alguns aspectos dos efeitos da interação solo-estrutura em edifícios de múltiplos andares com fundação profunda
The main aim of this work is to use a numerical model for soil structure interaction and the importance of their consideration in a global structural analysis. For the structure the model considers the contribution of transverse bending stiffness of slabs, the exccentricy of beams in relation to the pile, and the hypothesis of rigid diaphragms in the plan
Publicado em: 2000