Code provisions for wind loads on short road bridges: Spanish IAP code, UNE-EN 1991-1-4 2007 AASHTO LRFD Bridge Design Specifications.

摘要

In September 2007 the Spanish version of eurocode, UNE-EN 1991-1-4 has been published; also in road bridges the Spanish IAP code is considered by designers as a feasible tool for the evaluation of wind actions on conventional road bridges. Additionally the AASHTO LRFD Bridge Design Specifications is a feasible comprehensive code. The aim of this work is to analyze the approaches followed for the aforementioned codes for the design of short road bridges in terms of wind loads values and "user-friendliness". Thus the general procedures are described in order to get a grasp of their stipulations. Finally, two examples of simple bridges have been considered to evaluate the wind loads to be considered in their design according to the two codes. It has been obtained that eurocode and AASHTO LRFD give higher wind loads than the IAP code. Moreover IAP and AASHTO LRFD are easier to use for practitioners as they are specific bridge norms.