Project 1_Comparative study of different storey buildings for Seismic forces
Table 1
| Building | Description | No of Storeys | Column Dimensions | Beam Dimensions | Time Period | Storey Displacement | Story Displacement |
| Seconds | EQX | EQY | |||||
|
A |
2 Storey Building | 2 | 400x400 | 300x400 | 0.5 | 3.79 | 3.97 |
| B | 5 Storey Building | 5 | 400x400 | 300x400 | 1.036 | 9.48 | 9.75 |
| C | 5 Storey Building column Oriented along the X direction | 5 | 550x300 | 300x400 | 1.145 | 8.73 | 10.75 |
| D | 5 Storey Building column Oriented along the Y direction | 5 | 300x550 | 300x400 | 1.12 | 10.50 | 9.01 |
| E | 10 Storey building with varying column sizes along the building height | 10 |
upper 5 stoery: 400x400 bottom 5 storeys: 600x600 |
300x400 | 1.731 | 17.77 | 18.38 |
| F | 10 Storey building | 10 | 600x600 | 300x400 | 1.735 | 16.51 | 17.15 |
| G | A 25-storey building with varying column sizes along the building height | 25 |
upper 5 stoery: 400x400 Middle 10 storeys: 600x600 Bottom 10 Storeys: 800x800 |
300x400 | 4.17 | 44.30 | 48.88 |
| H | 25 storey building | 25 | 800x800 | 300x400 | 4.416 | 45.84 | 50.77 |
| J | 25-storey building with imposed mass 10% larger than H | 25 | 800x800 | 300x400 | 4.425 | 46.03 | 50.99 |
| K | 25-storey building with imposed mass 20% larger than H | 25 | 800x800 | 300x400 | 4.435 | 46.23 | 51.20 |
Created 10 Models according to the description shown in the table.
Model A
Model B
Model C
Orientation of Column in x Direction.
Model D
Orientation of Column in Y Direction.
Model E
Column Size reduced after 5th Storey
Model F
Model G
3 Different sizes of Column as seen in the Model above and Described in the Table.
Model H
From bottom to top Storey Column sizes are the same.
Model J
Imposed Load increased by 10% more than the load applied in Model H.
Model K
Imposed Load increased by 20% more than the load applied in Model H.
Result
| Building | Description | Time Period | Storey Displacement | Story Displacement |
| Seconds | EQX | EQY | ||
|
A |
2 Storey Building | 0.5 | 3.79 | 3.97 |
| B | 5 Storey Building | 1.036 | 9.48 | 9.75 |
| C | 5 Storey Building column Oriented along the X direction | 1.145 | 8.73 | 10.75 |
| D | 5 Storey Building column Oriented along the Y direction | 1.12 | 10.50 | 9.01 |
| E | 10 Storey building with varying column sizes along the building height | 1.731 | 17.77 | 18.38 |
| F | 10 Storey building | 1.735 | 16.51 | 17.15 |
| G | 25-storey building with varying column sizes along the building height | 4.17 | 44.30 | 48.88 |
| H | 25 storey building | 4.416 | 45.84 | 50.77 |
| J | 25-storey building with imposed mass 10% larger than H | 4.425 | 46.03 | 50.99 |
| K | 25-storey building with imposed mass 20% larger than H | 4.435 | 46.23 | 51.20 |
- Conclusion:
- As the height of a building increases Time period increases.
- The change in the orientation of the Column affects the Stiffness of the building in particular discretion so the Time period of the building and displacement changes in X and Y direction as seen in result of models B, C & D.
- With Varying Column Sizes Time Period od the building reduces, but displacement increases because of the reduction in the Stiffness of the building. As seen in the result table Compare Model G & H, and Model E & F.
- With an Increase in Imposed Load time Period and Displacement increases.