STAAD.Pro Help

M. To apply a dynamic wind load per SP 20.13330.2016

To apply a SP 20.13330.2016 wind definition as a dynamic load to your structure, use the following procedure.

A modal analysis and at least one static load cases are required in order to use a dynamic wind load case.


ロシアの動的風荷重成分では、ノードの動的風荷重成分を計算するためにモーダル質量と固有ベクトルが必要となるため、動的風荷重定義の前にモーダル分析を実行する必要があります。そのため、荷重ケースより前に定義された参照質量を使用してモーダル分析用の荷重ケースも別途含める必要があります。詳細については、「G.17.3.2 Mass Modeling」を参照してください。また、他の荷重ケースでは質量荷重を使用する必要がない場合(つまり他の荷重には参照荷重ケースが不要な場合)は、WIND LOADコマンドの前に動的荷重ケース内で質量荷重を定義することもできます。

  1. Either:

    On the Loading ribbon tab, select the Load Items tool in the Loading Specifications group

    ヒント: This will add the load item to the currently selected load group selected in the program status bar.


    In the Load & Definition dialog, select a primary load case in the Load Cases Details list and then click Add.

    The Add New Load Items dialog opens.
  2. Select the Wind Load > Wind Load - Dyanmic tab.
    注記: If you have not previously added a SP 20.13330.2016 wind load definition to the model, this tab is inactive. Refer to M. To add a SNiP wind load definition for details.
  3. In the Select Type drop-down list, select the wind load definition for this load case. Only SP 20.13330.2016 wind definitions are present in this list.
  4. Type the Width of building along wind dir. and Width of building across wind dir. values. These are the width parallel and perpendicular to the wind direction, respectively.
  5. Type the load Factor value.
  6. (オプション) Check the Allow All Mode Shapes to include all mode shapes from the modal analysis. Otherwise, only the first mode shape will be used.
  7. Select the Static Wind Case from the drop-down list of primary load cases that precede this load case in the model.
  8. Select the direction in which the wind is applied from the graphical plan view.
  9. Click Add.