Data:

- Isolation Time Period T= 2 sec
- Bridge is horizontally curved 3 spans box girder 88 m length
- 8 isolators - 2 under each pier and 2 at each abutment

And will the results be nearby if I use area, spline or solid model?

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0 votes

Creating a building seismic profile requires in most of the times a SDoF model. For a bridge, it's necessary to have 6 DoF comprise of:

- 3 x translations
- 3 x rotations in 3D

If you don't have that many directions, the longitudinal axis should be used therefore the calculation you've posted above should match your needs

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