engleski

Simplification of calculation of wind action on piers with rounded corners cross section

The piers make up between 20% and 50% of the total cost of the viaduct depending on pier heights and foundation conditions. Therefore, the design of bridge piers is crucial for the design of prestressed concrete viaducts. By rounding the corners of rectangular cross section of pier, the total wind force on pier can be drastically reduced in comparison to total wind force on pier with sharp corners with small reducing in load bearing properties of the pier. Calculation of total wind force on bridge piers according to EN 1991-4 is quite complicated and time consuming. Even more complicated is calculation in case of rectangular cross section with rounded corners in comparison to rectangular cross section with sharp corners. Therefore, the main goal of this paper is to investigate the influence of taking into account geometrical properties (i.e. area and moment of inertia) of simplified cross sections (with sharp corners) instead of real geometrical properties of cross sections with rounded corners in calculation of the total wind force on piers.

wind action, rounded corners, bridge pier

Znanstveni projekti: No. 13.05.1.1.01, No. uniri- tehnic-18-127