Differences between 3D model and dimension
Posted: 17 Jun 2010, 10:52
I have modeled an isolated bridge. I got result and compared them with the result got using another software. There was a big difference between the piles top displacements. I didn't understand since i used exactly the same parameters.
Then i have realized that, in Seismostruct, there is a difference in circular hollow section, rcchs, between dimension given in section properties tab and 3d visualization of the element having that section.
With a inner diameter 0.6 and an outer diameter of 1.7 of pile section, and dimension of the element which is between pile and deck(modeled with an elastic element) ugual to (section) 3.4*2.8 and (length) 7 m, the 3d view seemed to be ok but i got big differences in displacement results at the top of the piles.
If I set an inner diameter 1.2 and an outer diameter of 3.4. When i looked at the 3d the dimension of the pile (diameter) was bigger than the dimension of the element which is between pile and deck. In tha latter case the results are very close to those i got from the other software.
Is it possible that there is a bug or i am making some mistake? If there is a bug which of the two (section property dimension or model 3D view) is true.
Thanks
Antonio Di Lecce[:)] always
Then i have realized that, in Seismostruct, there is a difference in circular hollow section, rcchs, between dimension given in section properties tab and 3d visualization of the element having that section.
With a inner diameter 0.6 and an outer diameter of 1.7 of pile section, and dimension of the element which is between pile and deck(modeled with an elastic element) ugual to (section) 3.4*2.8 and (length) 7 m, the 3d view seemed to be ok but i got big differences in displacement results at the top of the piles.
If I set an inner diameter 1.2 and an outer diameter of 3.4. When i looked at the 3d the dimension of the pile (diameter) was bigger than the dimension of the element which is between pile and deck. In tha latter case the results are very close to those i got from the other software.
Is it possible that there is a bug or i am making some mistake? If there is a bug which of the two (section property dimension or model 3D view) is true.
Thanks
Antonio Di Lecce[:)] always