Foundations Safety
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Reliability and geotechnical safety applied to deep foundations in precast concrete piles - case study
Abstract The Brazilian standard pertinent to the design and execution of foundations, NBR 6122/2019, establishes that the safety inspection of foundations of a given project must be conducted based on compliance with specified safety factors. Safety factor verification is imperative to meet regulatory requirements; however, it is not enough to guarantee the
REM, Int. Eng. J.. Publicado em: 2021-01
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2. Analysis of the contribution of the block-soil contact in piled foundations
Abstract Geotechnical engineering has often been challenged by demands from technically and economically bold construction projects, such as that of tall buildings. The architectural requirements of these buildings have increased and concentrated the loads from structural systems without proportionally increasing plant area. New forms of using load capacity
Lat. Am. j. solids struct.. Publicado em: 22/07/2019
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3. Flexural motions under moving concentrated masses of elastically supported rectangular plates resting on variable winkler elastic foundation
The flexural motions of elastically supported rectangular plates carrying moving masses and resting on variable Winkler elastic foundations is investigated in this work In order to solve the fourth order partial differential equation governing the problem, a technique based on separation of variables is used to reduce the governing fourth order partial diffe
Lat. Am. j. solids struct.. Publicado em: 2014
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4. Dynamic behaviour under moving concentrated masses of simply supported rectangular plates resting on variable Winkler elastic foundation
The response of simply supported rectangular plates carrying moving masses and resting on variable Winkler elastic foundations is investigated in this work. The governing equation of the problem is a fourth order partial differential equation. In order to solve this problem, a technique based on separation of variables is used to reduce the governing fourth
Latin American Journal of Solids and Structures. Publicado em: 2011
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5. On the effects of uncertainty on optimum structural design / Estudo do efeito de incertezas na otimização estrutural
In this study the effects of uncertainty on optimum structural design are investigated, by comparing three distinct formulations of a structural optimization problem. Such effects can be quantified in terms of failure probabilities and risk, or expected costs of failure. Deterministic Design Optimization (DDO) allows one the find the shape or configuration o
Publicado em: 2010
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6. Modificação técnica e conceitual no sistema de segurança dos geradores e condutos forçados ns 1 e 2 da usina Henry Borden
This study aims to propose a technical and conceptual modification in the safety system of generators and forced ducts n 1 and 2 of Henry Borden hydroelectric power plant, in Cubatão - Sao Paulo, with the main objective of reducing the water hammer in the forced ducts. This work starts with a concise review on hydraulic turbines, with emphasis on the most c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/03/2008
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7. Avaliação numérica de reforço de grupo de estacas pela introdução de estacas adicionais
A review of the evolution of the use of piled raft, the differences of this foundation type with the conventional pile groups and as it these conception is important to evaluate the damage in a foundation. The main damages happened in the foundations are presented and some cases moderated in the literature on reinforcement of foundations, forecast of bearing
Publicado em: 2008
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8. APLICATIONS OF PROBABILITY AND STATISTICS IN GEOTECHNICAL ANALYSES / APLICAÇÕES DE PROBABILIDADE E ESTATÍSTICA EM ANÁLISES GEOTÉCNICAS
In geotechnical analyses, forecasts of safety factors or deformations are developed on the basis of deterministics methods, that admit as fixed and known the parameters of the soil or the rock. However, such forecasts are affected by uncertainties proceeding from the reproduction impossibility of the field conditions in laboratory, of the disturbance of the
Publicado em: 2008
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9. A democratização do poder nas empresas e a participação nos lucros ou resultados - PLR
This academic study has its foundations fixed in the reflection of more than three and a half centuries of slavery, the compulsory work system, the monopoly of managerial power in the hands of de holders of the production means, the reflexes in the business and in the relationships among employee and employer in the current days, seen by the eyes of the laws
Publicado em: 2008
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10. Bayesian inference in the assessment of precast piles foundations safety. / Inferência bayesiana na avaliação da segurança de fundações em estacas de deslocamento.
The theme of "foundations safety" deserves special attention in theory and practice, due to the need to find optimized solutions, which balance cost and safety, solutions that differ in their method of uncertainty treatment. An important way of coping with these uncertainties is the proof pile load tests. Recently, the importance of proof load tests in the r
Publicado em: 2007
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11. Verificação da eficácia dos sistemas de vedação e drenagem em fundações de barragens de concreto / Grouting and drainage curtains efficacy verification in concrete dam foundations
One of the biggest problems for hydraulic works safety is the uplift pressure. The execution of grouting, associated with drainage, is very important to control seepage through concrete dam foundations. Therefore, appropriate means to check the efficiency of those systems are essential for dam safety evaluation. Most of the uplift pressure criteria used nowa
Publicado em: 2006
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12. Comparação entre desempenhos de estacas metálicas tubadas de ponta aberta e fechada na Baixada Santista. / Comparison between the behavior of steel pipe piles with opened and closed ends at the Santos Coastal Plain.
This MSc thesis dealt with the plug phenomenon in open-ended-toes steel pipe piles. This phenomenon occurs when, in the driving process of an open-ended toe pile, the soil that gets into its base alters its behavior, making it similar to one of a close-ended toe under static load and, sometimes, even under dynamic load. Many bored piles, installed with the p
Publicado em: 2005