Concrete Piles
Mostrando 13-24 de 25 artigos, teses e dissertações.
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13. Análise do comportamento de estacas strauss submetidas a carregamento horizontal no solo da região de Londrina - PR
In Londrina city, Strauss piles are frequently used as retaining structure for building basement excavation, being submitted to horizontal load. However, the projects of such retaining structures are usually conducted using design methods that do not take the concrete cracking of pile transversal section and the properties of lateritic tropical soil into acc
Publicado em: 2008
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14. Behavior of different piles, conducted in diabasic soil, submited to uplift efforts / Estudo do comportamento a tração axial de diferentes tipos de estacas em solo de diabasio da região de Campinas/SP
This research presents the behavior of different kinds of piles conducted in unsaturated diabasic porous soil submitted to uplift forces. For this research there were built the follow piles: three instrumented root piles with 12m length and 410mm of nominal diameter, one root pile with nominal diameter of 310mm and 23m length, two metallic piles type W250x32
Publicado em: 2008
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15. Retroanálise probabilista aplicada à análise dinâmica da cravação de estacas. / Probabilistic back-analysis applied to dynamic loading test for pile driving.
An dynamic loading test can be performed in concrete piles, bored piles, drilled shafts, auger cast-in-place (continuous flight auger) piles. Such essay bases on the Theory of the Propagation of Wave in piles with the aim of evaluate the capacity of static load mobilized from the dynamic event. The analysis of the test is made by a PC program (p.e. CAPWAP or
Publicado em: 2008
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16. Análise experimental de bloco de fundação sobre duas estacas, sob carga centrada, para estruturas pré-fabricadas
This work analyses and discusses the pile caps behavior for concrete precast structures on two piles submitted to the action of centered force. As column-foundation connection, rough interface foundation socket was used. The strut-and-tie model is used to shape the effort transmission from the column to the pile-caps, confirmed by the experimental analyses.
Publicado em: 2008
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17. Numerical analysis of cap supported on ten piles: calculus of pilesreaction / Análise numérica de blocos sobre dez estacas: cálculo das reações de apoio
Piles caps are structural elements used to transfer actions of the superstructure to a group of piles. They are found in infrastructures of bridges and buildings. The knowledge of its real structural behavior presents fundamental importance, once piles caps are structural elements that guarantee the safety of all the structure. There is no consensus yet betw
Publicado em: 2007
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18. Efeito de adições ativas na mitigação das reações álcali-sílica e álcali-silicato. / Effect of mineral admixtures in controlling the alkali-silica reaction and alkali-silicate reaction.
The alkali-aggregate reaction is a pathologic manifestation that can induce the premature distress and loss in serviceability of concrete structures affected. It is directly associated to the selection of materials (cement, coarse and fine aggregates, water and additives), as the interaction between these materials and environmental condition will grant the
Publicado em: 2007
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19. Modelo de atrito estático em interfaces de contato entre concreto e areia / A model for the static friction between concrete-sand interface contact
Esta tese apresenta os princípios e a formulação de um modelo não-linear de atrito estático em interface de concreto areia. A hipótese básica para desenvolvimento das equações consiste na ocorrência do atrito de deslizamento (atrito verdadeiro), do atrito de rolamento (rearranjo das partículas) e da dilatância (variação de volume durante o cisa
Publicado em: 2006
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20. Analise de paredes de contenção atraves de metodo unidimensional evolutivo : Marcelo Tacitano / Earth-retaining structures analysis with the evolutionary one-dimensional method
The retaining structures, usually of wood, steel or concrete, can be constituted by sheet pile wall, piles with lagging, ?in cast? pile walls and diaphragm walls among others and need to be designed, so that they reach the requirements about functionality, execution, safety and economy an appropriate way. It is possible divide the design methods in three gre
Publicado em: 2006
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21. Interpretação de deformação e recalque na fase de montagem de estrutura de concreto com fundação em estaca cravada / Strain and settlement interpretation in the assembly of a concrete structure supported by driven piles
Although encouraged by several authors and by the Brazilian Foundation Code, reports of actual column loads measurement in natural scale are not frequent in our technical literature, especially in the case of buildings supported by deep foundations. Results of load and settlement measurements at 20 contiguous columns of a structure built in pre-cast reinforc
Publicado em: 2005
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22. Avaliação da resistência lateral em estacas escavadas com trado submetidas à tração / Evaluation of the lateral strength in augered piles submitted traction
Com a finalidade de determinar e avaliar a resistência lateral em estacas escavadas com trado sem o uso de lama bentonítica solicitadas à tração, foi executado neste trabalho uma série de ensaios de campo (PMT, DMT, SPT e SPT-T) e laboratório (granulometria conjunta, limites de consistência, massa específica dos sólidos e ensaios triaxiais), atrav�
Publicado em: 2005
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23. Analysis of reinforced concrete pile-caps behaviour subjected to center top surfaces loading / Análise do comportamento de blocos de concreto armado sobre estacas submetidos à ação de força centrada
This work describes the behavior of rigid reinforced concrete pile-caps with one, two, three, four and five piles subjected to patches of loading on the center top surfaces of the column. Programs based on finite elements method were used to obtain numerical results and results obtained by means of analytic models were used. A comparative analysis was develo
Publicado em: 2004
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24. Análise do desempenho de estacas hélice contínua e ômega: aspectos executivos. / Analysis of the performance of CFA and omega piles: executives aspects.
This research work presents an analysis of the performance of CFA and omega piles, with emphasis on the influence of execution processes. A review of previous work is presented, showing the construction evolution of these piles, its execution process and relevant aspects concerning the correct execution of these piles, as well as material properties effect
Publicado em: 2002