التفاصيل البيبلوغرافية
| العنوان: |
Load Models Representative of Brazilian Actual Traffic in Girder-Type Short-Span Highway Bridges |
| المؤلفون: |
Carlos Eduardo Rossigali, Michèle Schubert Pfeil, Luis Volnei Sudati Sagrilo, Hugo Medeiros de Oliveira |
| المصدر: |
Applied Sciences; Volume 13; Issue 2; Pages: 1032 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2023 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
highway bridges, live load models, traffic simulation, vehicle-pavement-structure dynamic interaction, optimization |
| جغرافية الموضوع: |
agris |
| الوصف: |
The Brazilian code NBR 7188 for highway bridge design prescribes a live load model consisting of a 3-axle vehicle plus a uniform load, which are both affected by an impact factor when considering dynamic effects. It does not play out actual traffic static effects and may be, in some cases, non-conservative. This work presents two load model configurations developed by gathering a real traffic database, traffic simulations, modeling of the dynamic interaction between vehicles and structure, and statistical extrapolations. Proposed load models comprise dynamic effects and were calibrated for two-lane single carriageway bridges with span lengths up to 40 m under free-flowing traffic. The target values of the effects were compared to those generated by the new proposed load models, as well as by the Brazilian design load model. Adequacy of the proposed models is demonstrated; results show that the effects generated by the Brazilian design load model are underestimated in many cases, particularly for negative moments in cantilevers. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Civil Engineering; https://dx.doi.org/10.3390/app13021032 |
| DOI: |
10.3390/app13021032 |
| الاتاحة: |
https://doi.org/10.3390/app13021032 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.18029984 |
| قاعدة البيانات: |
BASE |