Etabs model - Pier forces

[luungoclinh]

Hi,
I have a reinforced concrete shear wall building. I am trying to model it in Etabs (attached file). The lateral load is supposed to resist by only the shear walls, thus I pin the columns at base.Now, I just apply a vertical load to the building, then I look at the pier forces (by looking at table-wall forces-pier forces). I expect that I only see the axial load from pier elements, but you can see that there are also the shear force, moment and Torion.
Could someone explain me why? Is there anything wrong with my model.
Thanks
Lisu

 

[johnbridge231]

First make sure that you set that the mass will be lumped at the story levels.

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html

 

[luungoclinh]

thanks for your response, I have found my problem. It is very elementary. I should look at story shear instead of pier forces because there are 2 cores in my building. Thanks again.

 

[johnbridge231]

You are most welcome !

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html