A Proposed Live Load Model for Bridge Design in Venezuela
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Détails bibliographiques
| Auteur(s): |
Luis B. Fargier G.
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Publié dans: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 474-475 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2010 | ||||
| DOI: | 10.2749/222137810796025384 | ||||
| Abstrait: |
Information collected from Weight In Motion (WIM) studies conducted in Venezuela indicate the presence of very heavy trucks that produce shears and bending moments significantly larger than those specified by the AASHTO-LRFD and AASHTO-Standard specifications for Bridge design, which are commonly used in Venezuela. In this investigation the WIM recorded data is plotted on the normal-probability paper to facilitate statistical interpretations. The cumulative distribution functions of moments and shears serve to extrapolate results and anticipate design forces up to 75 years for a typical 3 meters-wide design lane. Extrapolations indicate the need to amplify the design shear Vu, LRFD and moment Mu, LRFD at ultimate as calculated as per the LRFD Specification to match the predicted demands. Such amplification can be achieved by multiplying Vu, LRFD by 4/3 and Mu, LRFD by the factor (1.30+60/L2) where L is the span length in meters. |
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