Shear wall ppt
- 1. SHEAR WALL Introduction & Design provision
- 3. What is SHEAR WALL? ■ Structural member used to resist lateral forces ■ Provide strength and stiffness to control lateral displacements ■ Minimum thickness - 150mm, Maximum thickness - 400mm in high rise buildings Vertical plate-like RC walls Start at foundation level and are continuous throughout the building height Why SHEAR WALL is provided?
- 5. Classification SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH INFILLED FRAMES COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS
- 6. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS stronger and more ductile wall is provided monolithically between two column
- 7. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS Two structural walls are joined together by relatively short spandrel beams
- 8. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS - Provide greater lateral rigidity - Can build up to 20-25 floors - Composed of braced panel (to counter the effect of lateral loads)
- 9. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS Reinforced concrete (RC) frames with hollow clay tile (HCT) infill walls carbon fiber–reinforced polymer (CFRP) fabrics
- 10. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS
- 11. SIMPLE RECTANGULAR TYPE COUPLED WALLS RIGID FRAME SHEAR WALLS FRAMED WALL WITH HCT INFILL COLUMN SUPPORT SHEAR WALLS CORE TYPE SHEAR WALLS - lateral & gravity loads are supported by core - Eliminates column & bracing elements - Core wall is provided around staircases or lift wells
- 13. LOCATION OF SHEAR WALL IN A BUILDING ■ Located symmetrically to avoid ill effect of twisting ■ Can be located at exterior or interior ■ More effective when located along exterior perimeter of building
- 14. Design Provision: ■ Step- 1: Review of the layout ■ Step-2: Determination of various loads ■ Step- 3: Estimation of earthquake design force ■ Step-4: Analysis of the structural systems ■ Step- 5: Design for flexural strength ■ Step- 6: Design for shear strength ■ Step- 7: Detailing of reinforcement
- 15. BEHAVIOUR UNDER SEISMIC LOADING: ■ Depending on the height to width (H/D) ratio , a shear wall may be behave as a slender wall a squat wall or a combination of two. ■ Squat wall show significant amount of shear deformation as compared to bending deformation. ■ In slender wall primary mode of deformation is bending. Shear deformation are small and can be neglected.
- 17. Advantages 1. Energy dissipation capability & high stiffness. 2. Provide strength & stiffness in direction of orientation 3. Reduces lateral sway 4. Easy construction & implementation 5. It is more resistant to Earthquake. 6. Efficient in terms of construction cost Conclusion Effective building element in resisting lateral forces Larger stiffness Damages can be minimized