Combinations

 

 

 

Enter the load combinations to combine the results of static, construction stage, moving load, response spectrum and time history analyses.

midas Civil supports the following 4 types of dialog box tabs for load combinations.

        • General

Combine unit load cases to evaluate serviceability or analysis results irrespective of design codes.

        • Steel Design

Enter the load combinations for designing steel framing members according to the steel design codes.

        • Concrete Design

Enter the load combinations for auto-design or capacity check for RC and PC members.

        • SRC Design

Enter the load combinations for designing SRC members according to the SRC design codes.

        • Composite Steel Girder Design

Enter the load combinations for designing steel composite members according to the AASHTO codes only.
For designing the steel composite members according to any other code, Steel Design combinations are used.

 

 

 

From the Main Menu select Results > Combination > Load Combination.

Shortcut key : [Ctrl]+[F9]

 

 

 

  The entry methods are similar for each dialog box. Refer to Usage of Table Tool and enter as follows:

To enter new or additional load combinations

Enter the load combination cases by the following 3 methods:

1. The user directly specifies the load combinations

2. Select built-in design standards to automatically generate load combinations

3. Enter or modify the load combinations in a Spread Sheet form table

4. Import a load combination (fn.lcb) file to generate load combinations

Click at the bottom of the load combinations dialog box. Select the following items in the displayed load combination auto-generation dialog box. If is clicked, the load combinations are automatically entered as per the design code based on the user-defined unit load cases.

To modify previously defined load combinations

Select the load combination to be modified in the load combination list and modify the entry.

To copy previously defined load combinations

Select the load combination to be copied in the load combination list and click .

To delete previously defined load combinations

Select the load combinations to be deleted in the load combination list and click the Delete key.

Note 1
Auto-generation of load combinations supports the following design codes:

1. Steel

2. RC

3. SRC

4. Steel Composite

 

Note 2

Static Load Case Name

Dynamic Load Case Name

Factor

 

Additional requirements for the application of each design standard are as follows:

AASHTO-LRFD12

AASHTO-Std2K

CAS-S6S1-2010

CAS-S6-14

IRC : 6-2000

Eurocode 0:2002

Calculations of Principal Stresses, Effective Stresses and Maximum Shear Stresses for each Load Combination Type

IRC : 6 LSD

 

Q1. I have a question regarding the load combination import from one model to another in midas Gen. I looked for the procedure in the online manual, but I am not sure of how to generate the .lcb file. What is the procedure of importing or pasting a load combination?