Challenge

Conceptual design of a building with columns and shear walls

ANSWER

STRUCTURE(a)

For this structure considared as it is asymmetric in nature.
Here cannot to be considared as a horizontal irregularities and the shear wall shape like L.
There is some uncertainty concerning certain features of the seismic response of non-rectangular walls.
It occures lack of tensile capacity and force configuration.
These walls have high stiffness and strength in both derection,hence are subjected biaxial bending and bi-directional shears during earthquakes.

STRUCTURE(b)

For this structure fram can be considared as symmentric in placed the shear walls.
The walls of a wall system of this frame could be arranged in two horizontal directions with as much two way symmentric as possible.
The shear walls are arranged in similar and symmntric ,so it can be considared at storey to fairly uniform resistant in in seismic forces and determination demands,minimizing the uncerainly about the seismics forces and determination demands ,minimizing the uncertainty about the seismic response.

STRUCTURE(c)

For the structure can be considered as asymmetric in nature,because of the shear wall are provided are not arranged in a two orthogonal horizontal directions.
The center of mass and center of gravity of such structure will not lie far away from each other enabling transitional modes in the first two principles modes.
The foundation,shear wall and columns are arranged different arrangements,so here take up huge amount moments in case of during earthquakes.
This type of shear wall system will not carry the load equally in either directions.so this structure have lack of redundancy.
On left hand side the wall provide more eccentricity ,lateral stiffness is more.Therefore it occures then the damage or failure will be less.

ANSWER

In this structural frame,there is a two-way eccentricity of the center of mass in accordance with the center of stiffness,which is eccentricity of x-direction is lager than y-direction.
In this structure beams are provided at stronger than column,so it can consider as weak column strong beam design in nature.
Therefore this structure need some shear wall to resist the column failure,when the lateral forces acting about the structure.
Combination of shear wall and column tends to prevent the failure about the structure during the seismic forces occur.
As the frame plan ,we can see about the alignment of beam is uniformly continuous of B1 and B2 at X-direction, and B11 & B12,B9 &B10 at y-direction.
But another all beams are provided at discontinuous of structural frame ,so here cause to difficult of transmission of load ewvenly at entire structure due to action of lateral forces.
Beams with long span may have their top reinforcement at the supports governed by factored gravity load,rather than by the seismic design situations.
Therefore,this structure will alternate to better portal of better offset at symmetric in nature.
The column beams connections should be in proper cross section area ,then it achieve lateral stiffness, mass regularity,moment resisting factor.
As we consider beam-away mechanism in strong column/weak beam design frames is better, because of its achieve a uniformly spread ,global inelastic displacement demand at roof level,to all storeys.

For here,we changed the column of C5 & C8 to considered as a combined footing,because of their need to avoid the loss of center of stiffness dur to occur lateral forcesc about the structure.
And more we add one more column of C10 is covered that boundary of plan,should maintain the center of mass as well as the center of stiffness due to occur lateral forces about the structure.
And more we add one more column of C10 is covered that boundary of plan,should maintain the center of mass as well as the center of stiffness about the structure during lateral horizontal force action.

ANSWER

This plan totally unsuitable for heavy seismic zone areas.
In this plan,the interior columns are in unsymmetric .
The partition wall are provided through the base of beam,should support the lateral deformation due to the structure.
The interiors beams will supports the slab,then the lateral load resisting the failure due to earthquakes.
For this irregural columns in plan,there we provided the flat slabs,because its directly stay in a column centroidal axis.
For here,the beams at different locations is irregular in plan and are continuous and is disallowed to resist the seismic load in the region.
In this plan, the flat slab is more appropriate than a regular beam column junctions,because of as its provide support to the columns without any provision of the beam,which reduces the weight of the building and also helps in the ductility of the structure by indirectly.
For the solution of this structure ,we provide the shear wall from the foundation of structure through virtical components,it should minimize the loss of sudden failure occur due to lateral force acting on structure.

Ship work like this
in your own course.