Hi Woongchan,

Yes, it is possible!

However, you need to convert the acceleration records into displacement records using SAP or any other seismic software. Then you define load pattern for each loading record and assign a unital displacement load on that node using the defined load pattern. Finally, define time history load case for using load pattern not acceleration. You may check Appendix B in my thesis on how to conduct multi-support excitation time history analysis using SAP2000.

Best,

Bashar

https://spectrum.library.concordia.ca/id/eprint/984801/

Define Specific Nodes:

First, make sure you have defined the specific nodes where you want to apply the ground acceleration time history data. You can do this during model creation or by editing the existing model.

Create the Ground Acceleration Function:

You should have the ground acceleration time history data in a format compatible with SAP2000. This could be data provided by real measurements or simulations. Then, in SAP2000, create a ground acceleration function using this data. You can do this by going to "Define" > "Function" > "Time History" in the main menu.

Assign the Ground Acceleration Function:

Once you have created the ground acceleration function, you need to assign it to the specific nodes where you want to apply it. To do this, select the respective nodes in the model view and assign the ground acceleration function in the properties window.

Define Support Restraints:

Since you mentioned having fixed support conditions around the exterior walls of the structure, make sure you have correctly defined these support restraints in SAP2000. This is important to accurately simulate the behavior of the structure under the influence of ground acceleration.

Analyze the Model:

After assigning the ground acceleration functions and defining the support restraints, proceed to analyze the model in SAP2000. During the analysis, the software will take into account the ground acceleration time history data at the specific nodes you have designated.