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Eng. Paulo Franco Rocha - Prova de Carga
Transcript of Eng. Paulo Franco Rocha - Prova de Carga
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“ Ensaio e Verificação de Estruturas ”
Artigo do Eng. Paulo Franco Rocha - 1944
Prof.. Eduardo C. S.
Thomaz
Notas de aula
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Resumo por E. Thomaz : Distribuição transversal de carga no tabuleiro de pontes
Medições feitas por Prof. Telemaco van Langendonck ( EPUSP ) e Engo Paulo Franco Rocha ( IPT)
No
Estrutura Tipo de ponte Vãos
e [ Entre eixo das vigas ]
Medição por IPT ( até 1944 ) Telemaco van Langendonck e
Paulo Franco Rocha
Método de Courbon Tabuleiro rígido
transversalmente
1 Ponte Victor Konder 2 arcos paralelos 55 m
[ 1 x 4,4m ] V1=70% a 60% V2=30% a 40% V1=100% V2=0 %
2 Ponte Cidade Jardim 3 vigas Gerber
paralelas 20m + 48m + 20m
[ 2 x 5m ] V1=51% V2=33% V=16% V1=83% V2=33% V3= -17%
3 Ponte de Rebouças
3 vigas contínuas 20m + 48m + 20m
[ 2 x 5m ] V1=48% V2=34% V=18% V1=83% V2=33% V3= -17%
4 Ponte do Rio Atibaia 2 vigas contínuas 19,15m + 19,15m
[ 1 x 3,8m ] V1=80% a 70% V2=20% a 30% V1=100% V2=0 %
5 Ponte das Bandeiras 3 abóbadas 12,45m + 60m + 12,45m
[ 2 x 4m ] V1=46% V2=33% V=21% V1=83% V2=33% V3= =17%
Observações : 3 Vigas
1 - A viga central sempre dá 33% que é o valor do Courbon e dos outros métodos também
2- A viga do bordo carregada pega muito menos carga que o calculado , mesmo supondo o tabuleiro muito rígido ( Courbon)
3- A viga do bordo não carregado não dá levantamento, mesmo supondo o tabuleiro muito rígido ( Courbon)
Observações : 2 Vigas 1- A viga do bordo carregada pega menos carga que o calculado .
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Resumo por E. Thomaz : Método de Courbon - Tabuleiro rígido transversalmente - muito usado na época
Exemplo : Tabuleiro com 5 vigas longitudinais
Exemplo : Tabuleiro com 3 vigas longitudinais
No caso de 3 vigas : 222
iy a ; Na viga do bordo carregado : 833.050,0333,0
22
1
3
1V
a
a
a
Viga central : 333.03
1V ; No outro bordo : 167.050,0333,0
22
1
3
1V
a
a
a
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Resumo por E. Thomaz : Distribuição transversal de carga no tabuleiro de pontes
Medição por Prof. Telemaco van Langendonck ( EPUSP ) e Engo Paulo Franco Rocha ( IPT)
No
Estrutura Tipo de ponte Vãos
e [ Entre eixo das vigas ]
Medição por IPT ( até 1944 ) Telemaco van Langendonck e
Paulo Franco Rocha
Método de Courbon Tabuleiro rígido
transversalmente
1 Ponte Victor Konder 2 arcos paralelos 55 m
[ 1 x 4,4m ] V1=70% a 60% V2=30% a 40% V1=100% V2=0 %
2 Ponte Cidade Jardim 3 vigas Gerber
paralelas 20m + 48m + 20m
[ 2 x 5m ] V1=51% V2=33% V=16% V1=83% V2=33% V3= -17%
3 Ponte de Rebouças
3 vigas contínuas 20m + 48m + 20m
[ 2 x 5m ] V1=48% V2=34% V=18% V1=83% V2=33% V3= -17%
4 Ponte do Rio Atibaia 2 vigas contínuas 19,15m + 19,15m
[ 1 x 3,8m ] V1=80% a 70% V2=20% a 30% V1=100% V2=0 %
5 Ponte das Bandeiras 3 abóbadas 12,45m + 60m + 12,45m
[ 2 x 4m ] V1=46% V2=33% V=21% V1=83% V2=33% V3= =17%
Observações : 3 Vigas
1 - A viga central sempre dá 33% que é o valor do Courbon e dos outros métodos também
2- A viga do bordo carregada pega menos carga que o calculado , mesmo supondo o tabuleiro muito rígido ( Courbon)
3- A viga do bordo não carregado não dá levantamento, mesmo supondo o tabuleiro muito rígido ( Courbon)
Observações : 2 Vigas 1- A viga do bordo carregada pega menos carga que o calculado .
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