sap2000 esempio edificio 3d
DESCRIPTION
realizzazione passo passo di un edificio multipiano in sap2000TRANSCRIPT
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SAP 2000 ( VER 9.03 )
3D MODEL EXAMPLE
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SAP 2000 ( VER 9.03 )
15
15
B(
25x70)
B(
25x70)
B(
25x70)
B (25x70)
B (25x70)
B (25x70)
B (25x70)
15
15
15 15
15
1515
B(
25x70)
B
(25x70)
B(
25x70)
B(
25x70)
B(
25x70)
B(
25x70)
B(
25x70)
B(
25x70)
B(
25x70)
B (25x70)
B (25x70) B (25x70)
B (25x70)
B (25x70) B (25x70)
B (25x70) B (25x70)
L.L = 250 KG /m2
FL = 150 KG / m2
No of floor = Ground + 7 floor
Foundation level = ( -2.00 )
Ground floor height = 3 m
Repeated floor height = 3m
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SAP 2000 ( VER 9.03 )
1- File menu --- new model --- Grid
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SAP 2000 ( VER 9.03 )
2- Draw frame element
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3- Draw shell element
4- Define frame section of beam as 25 x 70 cm
5- Assign frame section of beam as 25 x 70 cm
6- Define shell section of slab as 15 cm
7- Assign shell section of slab as 15 cm
8- Assign joint restrain as hinge
9- Mesh of shell by 0.5 X 0.5
10- Divide frame section
11- Delete void of shell
12- Assign hinge at shear wall edge
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13- Edit grid in Z direction ( at Z level = 0 is Ground )
14- Grid for Z ( -5 , 0 , 3 , 6 , 9 , 12 , 15 , 18 , 21 )
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15- To insert all floor
Select floor at Z = 0
From edit menu ----- replicate
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SAP 2000 ( VER 9.03 )
16- Define column section 60 x 60 cm
17- Draw frame element of column by show two window ( XZ & XY )and to select frame section 50 x 50
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SAP 2000 ( VER 9.03 )
18- Define shell section 30 cm
19- Draw shell element of shear wall by show two window ( XZ & XY )and to select shell section 30
20- To show shear wall only ---- select menu --- area section ---- 30
21- View menu ---- show selection only
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22- Mesh shear wall as floor by 0.5 x 0.523- First mesh it by grid to mesh at each floor
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24- Second mesh wall by 0.5 x 0.5
25- Select all model ----- assign menu --- joint ---- restrain --- free
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26- At Z level -5 show XY plan ( joint no invisible )
27- Select all joint for this level ---- joint restrain as hinge ( restrain at
foundation level only )
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28- From view menu ---- set display option ---- select extrude view
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29- Divide frames at each floor by select all model ---- divide frame
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SAP 2000 ( VER 9.03 )
30- Define load cases
Define menu ---- load cases
EQX is earthquake in X direction
EQY is earthquake in Y direction
Auto lateral type :
There is three method to insert lateral load
1- static method2- dynamic method
3- response spectrum method
31- Assign vertical load
Dead load
Select all model ---- assign area load ---- dead --- 0.15 t/m2
Live load
Select all model ---- assign area load ---- live ---- 0.25 t/m2
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32- Assign earthquake load
a-First method ( static user define )1- from define menu ---- load cases ( change auto lateral load as
user load )
2- define diaphragm ---- select floor No 1 ---- assign ---- joint ---- constrain
select diaphragm ----- add new constrain
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select diaphragm ----- add new constrain
select floor 2 ---- assign joint constrain --- diaphragm ---- addnew diaphragm ---- diaphragm 2 and so on for other floors 3 ,
4 , 5 , 6 , 7 , 8
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SAP 2000 ( VER 9.03 )
Calculate static earthquake load usingFor example
P = ZICKS ( W )
Then get load at each floor
To insert earthquake load ( for example in X dir )
From define menu ----- load cases
Select EQX ----- select modify lateral load
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SAP 2000 ( VER 9.03 )
The table which show at each Z level the diaphragm of it
To insert load of EQX insert the value of force in FX
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SAP 2000 ( VER 9.03 )
select apply center of mass
additional Ecc ratio 0.05
33- Assign wall section cutTo make the shear wall as section to get the moment on this wall asone unit we do the next steps
a- define new group as wallfrom define menu ---- group
Select add new Group
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press OK
b-Assign wall to group select shear wall base joint + above shell
From assign menu ---- assign to group ---- select wall group
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c- Define section cut From define menu ----- section cut
Select add section cut
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RUN
After run sap first we want to know the drift of the building and comparethis value with the allowable code value
Assume allowable code value = height / 500 = 26/ 500 = 5.2 cm
from display menu ---- show deformed shapediagram
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to show drift in X dir ( U1 ) show XY plan atroof ( Z = 21 )
from Sap U1 max = 0.0287 m = 2.87 cm < allowable thenOK the building drift under this earthquake is safe
if the drift not safe you must change the resisting system ofbuilding ( increase shear wall inertia or to add new shear
wall in other position of building to resist the earthquake
To show straining action of wall due to earthquake and other
loads
a- From display menu ---- show table
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Press OK
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X
Y
The table show that :M1 ( moment about X axis ) = zero ( no force in Y dir )
M2 ( moment about Y axis ) = 1890 t.m
M3 ( torsion about Z axis ) = 279 t.mF3 ( due to vertical load dead and live ) = 523 ton
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b- second method ( static user UBC Code )1- define diaphragm for each floor as previous method2- define menu ---- load cases
select UBC 97 code and ---- modify load
select EQY ---- modify lateral load
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direction of load is Y dir
Time period --- select user define option ---- calculate Tusing UBC eqation and insert this value
For elevation sap insert max Z and min Z if this value notcorrect you can type the correction valua but sap almost
insert the correct
Overstrength factor R ( you insert this value from codedepend on the building system )
For seismic coeffa- Soil profile type --- depend on type of soil from
code
b- Seismic Zone factor ---- from code by the reigon getthe factor of zone
Importance factor ---- depend on building using from code
After insert the value of table press OK
3- define mass sourceyou must define the mass source to insert the M value
F = M * a
If L.L more than 500 kg /m2Mass source = D.L + 0.5 L.L
If L.L less than 500 kg /m2Mass source = D.L ( only )
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** from define menu ----- mass source
You can Run the model and get result as previous Example