Bow imperfection

 

There is special subgroup General method on group Internal forces, where is possible to define type of calculation bow imperfection for concrete member via properties Bow imperfection e0,y and Bow imperfection e0,y. There are following possibilities:

• No bow imperfection - bow imperfection is not taken into account
• EN 1992-1-1, art,5.2.9 - bow imperfection (eccentricity caused by imperfection ) is calculated according to code
• Manual input of bow imperfection - the eccentricity caused by imperfection is directly inputted by the user in property e0,y or e0,z

The value form concrete setting are taken into account for calculation bow imperfection of concrete member, if

• in definition of bow imperfection for nonlinear combination Bow imperfection = According to buckling data
• in buckling data Bow imperfection e0,y or Bow imperfection e0,z the option From setup is selected

If bow imperfection are taken into account in definition of nonlinear combination and simplified method is selected for calculation second order effect, then calculation imperfection by simplified method should be OFF (geometrical imperfection ULS or SLS), because the geometrical imperfection will be taken into account twice