An evaluation of 100+30 method to calculate seismic response of steel structure buildings

Determining the critical direction of seismic load on a structure which includes the most possible responses of different elements is one of the main concerns of structural engineers. This direction is not necessarily the main direction of the building. Different methods for this matter have been proposed by building codes. The 100+30 is one of these suggested methods. By modelling steel structure buildings using the ETABS software and performing linear spectrum analysis, and by changing the angles of lateral load application, in the present study the critical responses of different elements were calculated and compared with the results in the 100+30 method. The effect of changing the angle on the axial force of the columns is more significant than the forces of the bracings and beams, as shown by the results. It is also shown that in the 100+30 method, while for columns in irregular buildings the resulting values are lower than the required values, the resulting values for columns in regular buildings are higher than the required values. Finally, according to the shape of the plan and the type of the lateral force resisting system, a modifying method is presented.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 1-12
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01497394
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 2013 11:17AM