| Application | PLAXIS 3D |
| Version | PLAXIS 3D CONNECT Edition V21.01 PLAXIS 3D 2024.1 PLAXIS 3D 2024.2 |
| Date created | 04 Oct 2018 |
| Date modified | 21 August 2024 |
This example demonstrates the natural frequency of a long five-story building when subjected to free vibration and earthquake loading.
The building consists of 5 floors and a basement. It is 10 m wide and 17 m high including the basement. The total height from the ground level is 5 x 3 m = 15 m and the basement is 2 m deep. A value of 5 kN/m2 is taken as the weight of the floors and the walls. The building is constructed on a clay layer of 15 m depth underlayed by a deep sand layer. In the model, 25 m of the sand layer will be considered.
This exercise requires a PLAXIS 3D Ultimate license for transient groundwater flow calculations.
The attached *.log file contains all the commands to generate the model. With a Bentley Geotechnical SELECT Entitlement [GSE] licence, you can use the commands runner to open the *.log file and to execute all commands in one go, see also this instruction.
Downloads
PLAXIS 3D 2024.2 - Tutorial 09 - Instructions [PDF]
PLAXIS 3D 2024.2 - Tutorial 09 - Earthquake analysis of a building [ULT].log [command log file]
225a - 20s.zip