Project 1_Comparative study of different storey buildings for Seismic forces
AIM -
Factors influencing the dynamic characteristics of a building
Factors influencing the Natural Period of a building
Factors influencing the Mode shape of oscillations.
ANS -
THE FOLLOWING BUILDING TASK IS GIVEN AND ANNALYSING ABOUT THREE POINTS.
1. Factors influencing the dynamic characteristics of a building
2. Factors influencing the Natural Period of a building
3. Factors influencing the Mode shape of oscillations.
I AM SHOWING THE CREATED TOTAL 10 MODEL WHICH I HAVE CREATED INTHE ETABS. ACCORDING TO GIVEN PROJECT 1 CRITERIA.
1. MODEL A -
in model 1 having 4 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 400x400 and beam 300x400.
PLAN VIEW -
3D VIEW -
Time Period After Modifying the Building (A):
Time Period - 0.5 second
it means structure is not having flexibility. because time period is .5 sec.
MODEL - B
PALN VIEW -
in model B having 5 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 400x400 and beam 300x400.
3D VIEW -
Time Period After Modifying the Building (A):
Time Period - 0.5 second
Structure is Normore flexible.
MODEL - C
IT BENCHMARK BUILDING WITH RECTANGULAER COLUMN ORIENTED ALONG Y-DIRECTION. in model B having 5 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 550X300 and beam 300x400.
PLAN VIEW -
3D VIEW -
Time Period After Modifying the Building (C):
time Period - 1.12 second
Time Period - 1.12 second
MODEL - D
PLAN VIEW -
IT BENCHMARK BUILDING WITH RECTANGULAER COLUMN ORIENTED ALONG Y-DIRECTION. in model B having 5 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 550X300 and beam 300x550.
3D VIEW -
Time Period After Modifying the Building (C):
Time Period - 1.12 second
MODEL - D
PLAN VIEW -
IT BENCHMARK BUILDING WITH RECTANGULAER COLUMN ORIENTED ALONG Y-DIRECTION. in model B having 5 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 550X300 and beam 300x550.
PLAN VIEW BOTTOM TO TOP 5 STOREY
PLAN VIEW TOP 5 STOREY TO 10 STOREY
3D VIEW OF MODEL - E
Time Period After Modifying the Building (E):
Time Period - 1.73 second
Natural time period is less time. it means structure is stiff.
MODEL - F
PLAN VIEW -
In this model 10 Storey building with varying. in model F- having 10 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 600x600 and beam having a size 300x 400.
3D VIEW -
Time Period After Modifying the Building (F):
Time Period - 1.735 second
Natural time period is less time. it means structure is stiff.
MODEL -G
PLAN VIEW -
In this model 25 Storey building with varying. in model G- having 25 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column upper 5 Storey 400x400 middle 10 Storey 600x600 and bottom 10 Storey 800x800 having a size. and beam having a size 300x400.
3d view
Time Period After Modifying the Building (G):
Time Period - 4.435 second
Natural time period is Heigh time. it means structure is more flexible.
MODEL -H
PLAN VIEW -
In this model 25 Storey building with varying. in model H- having 25 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 800X800 and beam having a size 300x400.
3D VIEW -
Time Period After Modifying the Building (H):
Time Period - 4.17 second
Natural time period is Heigh time. it means structure is more flexible.
MODEL - J
PLAN VIEW -
In this model 25 story building with varying. in model J- having 25 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 800X800 and beam having a size 300x400. having 10% imposed mass larger than the building H
3D VIEW -
Time Period After Modifying the Building (J):
Time Period - 4.354 second
Natural time period is Heigh time. it means structure is more flexible.
MODEL - K
PLAN VIEW -
In this model 25 Storey building with varying. in model J- having 25 Storey building. which have 4 byes in x - direction and 3 byes in y- direction. having a column 800X800 and beam having a size 300x400. having 20% imposed mass larger than the building H
3D VIEW -
Time Period After Modifying the Building (K):
Time Period - 4.426 second
Natural time period is Heigh time. it means structure is more flexible.
The Following annlysis is doing with copare with 10 building model which i have create Excel sheet.
1. Factors influencing the dynamic characteristics of a building.
2. Factors influencing the Natural Period of a building.
3. Factors influencing the Mode shape of oscillations.
