In general, the LIFT core or the LIFT wall is designed to save both the purposes (1) the lift passage track (2) the Shear wall. Now, if yo want to design this lift core as shear-wall, then you may use the surface element. Although the Surface element is composed of internally generated plate elements but the advantage you will get is the detailed design output if it is modeled by Surface entity.
Program analyzes the internal plate elements while solving the stiffness matrix . The Surface entity is specially introduced in Staad only for the shear wall design . This entity internally extracts all the plate stresses thus developed and then convert them to the six different forces as specified and required by the design code for shear wall design .
Mz in the shear wall force output represents in-plane bending force.
Fxy in the shear wall force output represent in-plane shear force.
Fy in the shear wall force output represent in-plane compression force.
My in the shear wall force output represent out-of-plane vertical bending force.
Mx in the shear wall force output represents out-of-plane horizontal bending force.
Qy in the shear wall force output represents out-of-plane shear force.
However, you may also model such structure by plate elements but one need to manually deduce the required forces from the different plate stresses . So, it is suggested, that if you want to do the comprehensive Shear wall analysis and design per ACI -318 code, then you may use the Surface elements.
For more detail on the shear-wall modelling and design , refer to the chapter no. 2.2 13.5.
communities.bentley.com/.../88577
communities.bentley.com/.../27930
Program analyzes the internal plate elements while solving the stiffness matrix . The Surface entity is specially introduced in Staad only for the shear wall design . This entity internally extracts all the plate stresses thus developed and then convert them to the six different forces as specified and required by the design code for shear wall design .
Mz in the shear wall force output represents in-plane bending force.
Fxy in the shear wall force output represent in-plane shear force.
Fy in the shear wall force output represent in-plane compression force.
My in the shear wall force output represent out-of-plane vertical bending force.
Mx in the shear wall force output represents out-of-plane horizontal bending force.
Qy in the shear wall force output represents out-of-plane shear force.
However, you may also model such structure by plate elements but one need to manually deduce the required forces from the different plate stresses . So, it is suggested, that if you want to do the comprehensive Shear wall analysis and design per ACI -318 code, then you may use the Surface elements.
For more detail on the shear-wall modelling and design , refer to the chapter no. 2.2 13.5.
communities.bentley.com/.../88577
communities.bentley.com/.../27930