ÖNORM EN 1991-2|Traffic loads on bridges

EN 1991-2 defines models of traffic loads for the design of road bridges, footbridges and railway bridges. For the design of new bridges, this ÖNORM is intended to be used, for direct application, together with EUROCODEs EN 1990 to 1999.

The bases for combinations of traffic loads with non-traffic loads are given in EN 1990, A2.

For road bridges, Load Models 1 and 2, defined in section 4, and taken into account with adjustment factors a and ß equal to 1, are deemed to represent the most severe traffic met or expected in practice, other than that of special vehicles requiring permits to travel, on the main routes of European countries. The traffic on other routes in these countries and in some other countries may be substantially lighter, or better controlled. However it should be noted that a great number of existing bridges do not meet the requirements of this EN 1991-2 and the associated Structural EUROCODEs EN 1992 to EN 1999.

For railway bridges, Load Model 71 (together with Load Model SW/0 for continuous bridges), defined in section 6, represents the static effect of standard rail traffic operating over the standard-gauge or wide-gauge European mainline-network. Load Model SW/2 represents the static effect of heavy rail traffic.

Provision is made for varying the specified loading to cater for variations in the type, volume and maximum weight of rail traffic on different railways, as well as for different qualities of track. The national recommendations for those parameters can be found in the National Annex to EN 1991-2, ÖNORM B 1991-2.

In addition two other load models are given for railway bridges:

  • load model "unloaded train" for checking the lateral stability of single track bridges and
  • load model HSLM to represent the loading from passenger trains at speeds exceeding 200 km/h.

EN 1991-2 also gives guidance on aerodynamic actions on structures adjacent to railway tracks as a result of passing trains and on other actions from railway infrastructure.

Current document

ÖNORM EN 1991-2
EUROCODE 1: Actions on structures - Part 2: Traffic loads on bridges

Current status:

ÖNORM EN

Publication:

2004-08-01

Document superseded:

PRESTANDARD ÖNORM ENV 1991-3

Further Information & Order:

ÖNORM EN 1991-2

National Annex (German only)

ÖNORM B 1991-2
Eurocode 1 - Actions on structures - Part 1-2: General actions - Actions on structures exposed to fire - National specifications concerning ÖNORM EN 1991-1-

Current status:

ÖNORM

Publication:

2004-08-01

National Specifications:

Overview

Further Information & Order:

ÖNORM B 1991-2

Publication (German only)

Effects of actions on road, pedestrian and cycle track bridges according to Eurocode - Practical manual