assoc. prof. dr. yavuz yardim
TRANSCRIPT
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Assoc. Prof. Dr. Yavuz YARDIM
Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Then click OK three times to close windows
Now we define the Layout
Next step will defining deck section
�Go to bridge
�Deck section
�Add new deck section
�Choose steel and concrete deck section ( Steel girder)
Now we have default section
we need to change girder section which is FSEC1
Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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We need to change girder section which is
FSEC1
Go to frame section ( previous slight )
Import new section
Select wide section
From the file we select “ AISC3.pro”
Select w36x230
Click ok
Select girder as w36x230
Change number of girder to the 4
Change total width to 36 ft.
Click ok ( check next slight)
Here section is up to us W 36x230 is given that
is why we select that
If it is not given we can select a range of
available section and program will find
optimum itself .
Assoc. Prof. Dr. Yavuz YARDIM
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Assoc. Prof. Dr. Yavuz YARDIM
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Now we define diaphragms
�Go to bridge
�Diaphragms
�Add new diaphragm
�Select chord and brace
It is steel girder that is why we have to
select this for bracing this give us more
sound bridge
Include top chord press “+ “
Import new Properties
Select wide section
From the file we select “ AISC3.pro”
Select w8x10
Click ok
Select girder as w8x10 for all ( check the figure
in this slight)
Click ok two times
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Now we define Bearings
�Go to bridge
�Bearings
�Add new Bearings
�Select bearing as shown in fig
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Now we define foundation
�Go to bridge
�Foundation spring
�Add new Foundation spring
�Set the windows as in fig.
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Now we define Abutments
Before we define abutment we have to
define frame section for abutment
�Go to define
�Section –> frame section
�Add new property
�Select concrete � rectangular
section
� depth 4 width 2 ft
�Change the name as abutment 4x2
�Then click ok and ok
�Go to bridge
�abutment
�Add new Abutment
�Set name as Abutment
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Abutments
�Set windows as in figure
�Click ok two times and reach main
window
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Now we define bent
Before we define bent we have to define
frame section for bent
�Go to define
�Section –> frame section
�Add new property
�Select concrete � circular section
� Diameter 2 ft
�Change the name as Column 2
�Then click ok
�Add new property
�Select concrete � circular section
� Depth 4 width 2
�Change the name as BentCap4x2
�Then click ok and ok
�Go to bridge
�bent
�Add new Bents
�Set windows as in fig Assoc. Prof. Dr. Yavuz YARDIM
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Press modify/show column data
�Set windows as in figure
�Click ok and ok and ok
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Now we define Bridge Object
This option will combine all predefined
bridge member in to a bridge structure
�Go to Bridge
�Bridge object
�Add new bridge Object
�Select span �
�start abutment 1000ft
�Press modify
�Click span end abutment
� end span 1100
�Press modify
�Type 1050 to station and press add
to add intimidate span (span1 )
�Be sure windows is set like in fig
�DON’T Click ok
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Bridge Object
�Select Abutment �
�Press modify and show
�Press modify see fig
�Select BDIA1 from diaphragm ( this is
the diaphragm we define before in
slight 11)
� we have to define elevation of
abutment from top of the deck from
substructure location elevation ( global
Z) is -4.2417
�From bearing Assignment
�Elevation at layout line (Global Z) is
3.7417 ( 5 in. less than elevation (
global Z) ) see fig 2
�select end Abutment
�Select BDIA1 for diaphragm
�we have to define elevation of
abutment from top of the deck from
substructure location elevation ( global
Z) is -4.2417
�From bearing Assignment
�Elevation at layout line (Global Z) is
3.7417 ( 5 in. less than elevation (
global Z) )
�Click ok
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Bridge Object
�Select Bent �
�Press modify and show
�Select BDIA1 from
diaphragm ( this is the
diaphragm we define before in
slight 11)
� we have to define bent
location top of the deck from
bent location elevation ( global
Z) is -4.2417
�From bearing Assignment
�Elevation at layout line
(Global Z) is 3.7417 ( 5 in. less
than elevation ( global Z) ) see
fig
�Click ok
�Then ok and ok to go main
page
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�Click ok and ok to go main page fig
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Now we Link bridge model
�Go to Bridge
�Update linked bridge model
�Maximmum segment length for deck spans is 5
�Press update as Area Object model
�And click ok
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�Click set displace option
�Click extrude view and click ok
�Close one of the windows
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Check model with dead load
Go to Bridge �
Update Link bridge model
Update as spine model using frame objects
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�Click set displace option
�Click extrude view and click ok
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�Now bridge represented by line element
�Then run the analysis by click this
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�Select the Modal and click do not run case
�And press run now
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�Check bending moment diagram
�Press frames /cables
�Select moment 3-3
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�Unlock the model by press this lock
Go to Bridge �
Update Link bridge model
Update as area object model
And run the analysis to see bending moment diagram for individual girder
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�Click on diagram and select the shell
Check the F11 as shown in figure �
Then u will have stresses under dead load as seen in next slight
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�Now we will define live load
�Unlock the model by press lock
Go to Bridge �
Lane and add new bridge lane and add new lane defined from layout line
�Starting station is 1000 ft
�Center line offset is 8 ft
�And lane width is 12 ft
�And click add
�Click ok
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�Click add copy of the lane
�Then enter -16 for center line offset
�Click ok and be sure that u have define lane 2 as shown in figure down
�if not u can enter values for the lane by manual one by one to obtain lane 2
�You can modify every
values by changing the
value then click on modify
�Be sure u have visible
color for lane , you can
change the color by this
button
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�Go to display
�Then show lane
�Show lane width
�And be sure that u get figure below
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�Now we define vehicles
�Go to bridge and vehicles
� select add vehicles
�And select HSn-44
�Then click convert to general vehicle
�Then click ok
�Click on modify /show button to see what is HSn 44
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�HSn 44 shows two point load ( look the load plan ) and
�Different loading ( look the load elevation )
�You can play with values in table below to modify the loading
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�We change the two point loads to line load
�Go to axis width type and select the fixed line width
�Then click on modify and do this for all three load
�Be sure u have figure below
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�Now we add two more vehicles by click on add
vehicle select HSn-44L then click on convert to
general vehicle button and ok
�Then add one more vehicle and add AML by add
vehicle and select AML and click on convert to
general vehicle
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�Now define vehicle class
�Go to bridge and vehicle class
�Add new vehicle class and add three pre defined vehicle
�By this operation we place all the vehicles on the bridge as in fig
� press ok and ok
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�Now load cases
�Go to define and load case
�Click on add new load case
�And type load case name as Move 1
�Change load case type as moving load
�Then click on add to apply load on the lane
�In other word we order the vehicles in the way we want on the bridge lane
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�Now load combination
�Go to define and load combination
�Click on add new load combination
�Click on add button to add dead load
�And select Move 1 and click on add button to add moving load
�Press ok and ok
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�Now run the analysis
�Wait until analysis complete
�Close the small window when u see analysis completed successfully u will see
page below
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�Now u can get any results you want from display button
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�Now unlock the model to see the load pattern for moving load
�Go to define and load pattern
�Type load pattern name as moving load and type as bridge live
�Click on add bridge load pattern on right side of the window
�Then click on modify the bridge live load as shown in fig below
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�Add the vehicles one by one and obtain the final figure of the box as in fig
below then click ok
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�Now we define an other load pattern name is move
�Click add and then modify to define vehicle order
� arrange the vehicle as in figure below
�Then press ok and ok
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�Now we define the load cases
�Go to define and load cases
�And select moving load and press on modify/select load cases
� be sure it is multi step static
�Then click ok
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�Now go to move load and select the time history from the load case type
�Select the direct integration for time history type
�And set the windows as shown below
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�Click on the modify/show button next to damping
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�Set the windows as in the figure below to define mass and stiffness proportion
damping
�Then press ok to close this window then press ok to close previous one then
press ok last time to reach general window
�Then run the analysis
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�Click on force diagram
�Then press on step as shown in figure
�Then click ok
�By this way u can see the contour step by step by clicking this button
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�Now u can create video file by go to file
�Click on create video and click on create multi step video
�Then set the windows as in the figure
�Then click ok
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�Go to display
�Click Show bridge forces/stresses
�U can get all the moment and shear diagrams from this page
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�Now u can get all the results of structure analysis of the bridge
Assoc. Prof. Dr. Yavuz YARDIM