81 |
Diretrizes para o dimensionamento e detalhamento de pilares de edifícios em concreto armado / Directions for design and detail of columns in reinforced concrete buildingsAufieri, Fábio Augusto 21 October 1997 (has links)
Este trabalho tem o objetivo de transmitir aos Engenheiros de Estruturas o conhecimento teórico necessário para o dimensionamento e detalhamento de pilares usuais de edifícios em concreto armado. A definição das posições dos pilares em uma estrutura, bem como uma estimativa da seção transversal dos mesmos são abordadas neste trabalho. O estudo da estabilidade global, realizado no Capítulo 3, nos permite avaliar se os deslocamentos ocorridos na estrutura em função das ações horizontais e verticais, geram esforços de segunda ordem consideráveis ou não. A instabilidade de pilares será comentada no Capítulo 5, bem como os Métodos desenvolvidos para avaliar se um determinado pilar é estável ou instável. O detalhamento de pilares segundo as prescrições do Texto Base para a revisão da NBR - 6118/78, bem como o desenvolvimento de exemplos de dimensionamento de pilares estão contidos neste trabalho nos Capítulos 7 e 8, respectivamente. / The objective of this work is to transrnit to the structural engineers the necessary theoretical knowledge for the design and detail of usual columns in reinforced concrete buildings. The definition of the columns positions in the structure, as well as an estimate of their cross section will be explained in this work. The global stability study, described in chapter 3, allows us to evaluate whether the deformations ocurred in the structure due to horizontal and vertical actions, cause considerable second order strength or not. The columns instability will be commented in chapter 5, as well as the methods developed to evaluate whether a specific column is stable or instable. The columns detail as prescribed in the Basic Text for the Revision of NBR - 6118/78, and also the development of examples for columns design are in chapter 7 and 8, respectively.
|
82 |
Diretrizes para o dimensionamento e detalhamento de pilares de edifícios em concreto armado / Directions for design and detail of columns in reinforced concrete buildingsFábio Augusto Aufieri 21 October 1997 (has links)
Este trabalho tem o objetivo de transmitir aos Engenheiros de Estruturas o conhecimento teórico necessário para o dimensionamento e detalhamento de pilares usuais de edifícios em concreto armado. A definição das posições dos pilares em uma estrutura, bem como uma estimativa da seção transversal dos mesmos são abordadas neste trabalho. O estudo da estabilidade global, realizado no Capítulo 3, nos permite avaliar se os deslocamentos ocorridos na estrutura em função das ações horizontais e verticais, geram esforços de segunda ordem consideráveis ou não. A instabilidade de pilares será comentada no Capítulo 5, bem como os Métodos desenvolvidos para avaliar se um determinado pilar é estável ou instável. O detalhamento de pilares segundo as prescrições do Texto Base para a revisão da NBR - 6118/78, bem como o desenvolvimento de exemplos de dimensionamento de pilares estão contidos neste trabalho nos Capítulos 7 e 8, respectivamente. / The objective of this work is to transrnit to the structural engineers the necessary theoretical knowledge for the design and detail of usual columns in reinforced concrete buildings. The definition of the columns positions in the structure, as well as an estimate of their cross section will be explained in this work. The global stability study, described in chapter 3, allows us to evaluate whether the deformations ocurred in the structure due to horizontal and vertical actions, cause considerable second order strength or not. The columns instability will be commented in chapter 5, as well as the methods developed to evaluate whether a specific column is stable or instable. The columns detail as prescribed in the Basic Text for the Revision of NBR - 6118/78, and also the development of examples for columns design are in chapter 7 and 8, respectively.
|
83 |
Effect of viscoelastic foundation on the stability of a tangentially loaded cantilever columnMorgan, Michael R January 2011 (has links)
Vita. / Digitized by Kansas Correctional Industries
|
84 |
Occurrence and quality of information concerning guidance of the pre-adolescent (9-11 years) in guidance columns distributed by newspaper syndicatesYates, Maria Diana January 2011 (has links)
Digitized by Kansas State University Libraries
|
85 |
Experimental investigation of sleeved columnsPrasad, Badri Krishnamurthy, 1959- January 1989 (has links)
Results of experimental tests are presented for twelve 'Sleeved Column' specimens. All the specimens had an outer sleeve and an inner core, both of rectangular cross section. Outer sleeve was 23 in. long and the inner core was 23.5 in., with axial load applied only to the core. There was a gap between the sleeve and the core for all specimens except for one which had zero gap. The parameters considered for the study were core thickness and gap. It was concluded from the study that the sleeved column system carries substantially more load than the conventional Euler's column. The stiffness of the core and the gap between the sleeve and the core affects the load carrying capacity of sleeved column system significantly. For the same core size, specimens with least gap carried more load when compared to other specimens with larger gaps.
|
86 |
Reinforced concrete column behavior under cyclic loading熊朝暉, Xiong, Zhaohui. January 2001 (has links)
published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
|
87 |
Seismic performance of rectangular GFRP-reinforced concrete columnsAli, Mahmoud 15 July 2015 (has links)
This study presents an assessment of the seismic performance of rectangular concrete columns internally reinforced with G (Glass) FRP. Eight full-scale columns prototypes, with a shear span of 1650-mm and 350-mm square cross-section, were constructed and tested under simulated seismic waves and constant axial loading. These columns simulate the lower portion of first storey columns between the footing and the contra-flexure point. Therefore, heavy steel-RC footing was post-tensioned to the laboratory strong floor in order to provide rational fixity to the column. The test parameters included reinforcement type, longitudinal reinforcement ratio, level of axial load, and stirrup spacing.
Test results showed that deformability of GFRP-RC columns prototypes successfully replaced ductility in steel-RC columns in dissipating the seismic energy in the presence of constant axial load. Furthermore, the failure of sections was prominent by flexure concrete crushing at high drifts. Accordingly, GFRP-RC columns are a doable application in earthquake-resistant structures. / October 2015
|
88 |
ANALYSIS OF REINFORCED CONCRETE COLUMNS SUBJECTED TO AXIAL LOAD AND BIAXIAL BENDING.Banjar, Adel Mohamad. January 1983 (has links)
No description available.
|
89 |
Scale up and modelling of HPLCScholtzova, Angela January 2000 (has links)
No description available.
|
90 |
Development of an optimal adaptive control technique for distillation and chemical processes based on analytical modelsNoor, Samsul Bahari Mohd January 1996 (has links)
No description available.
|
Page generated in 0.0404 seconds