Probability based assessment of acceptable precast girders deflections for proof load testing

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2004

Autores

António Abel Henriques (Autor) FEUP

Ata de Conferência Internacional

Título: Bridge, Maintenance, Safety, Management and Cost

Páginas: 131-132

IABMAS’04 – Bridge, Maintenance, Safety, Management and Cost

Kyoto, Japan, October 19 - 22, 2004

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia civil > Engenharia do betão

Outras Informações

Abstract (EN): This paper present probability based methodology for the assessment of acceptability limits of the bridge deformation due to testing loads. The technique developed use the Monte Carlo simulations coupled with FEM. The method allowed considering the real variability of material properties, girders geometry etc. in the prediction of structure deformation cased by loads applied to the structure during proof tests. This permit defining the PDF of expected girders deflections. The acceptability limits are characterized as percentile value of the expected deflection. The application of this methodology to the precast concrete bridge is also presented. The comparison of registered results with outcomes of numerical simulations shows the efficiency of the method. The sensitivity analysis, demonstrate the great importance of the vari-ability of concrete elasticity modulus for the bridge deflections. The changeability of the girder geometry and position of prestressing strands are found also quite significant in contrast to the remaining variables which show negligible influence.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 2