Assoc. Prof. Dr. Yavuz YARDIM. Assoc. Prof. Dr. Yavuz YARDIM

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7 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

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9 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.

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11 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

12 Now we define Bearings Go to bridge Bearings Add new Bearings Select bearing as shown in fig

13 Now we define foundation Go to bridge Foundation spring Add new Foundation spring Set the windows as in fig.

14 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

15 Abutments Set windows as in figure Click ok two times and reach main window

16 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

17 Press modify/show column data Set windows as in figure Click ok and ok and ok

18 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 TClick ok

19 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 From bearing Assignment Elevation at layout line (Global Z) is ( 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 From bearing Assignment Elevation at layout line (Global Z) is ( 5 in. less than elevation ( global Z) ) Click ok

20 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 From bearing Assignment Elevation at layout line (Global Z) is ( 5 in. less than elevation ( global Z) ) see fig Click ok Then ok and ok to go main page

21 Click ok and ok to go main page fig

22 Now we Link bridge model Go to Bridge Update linked bridge model Maximmumsegment length for deck spans is 5 Press update as Area Object model And click ok

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24 Click set displace option Click extrude view and click ok Close one of the windows

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26 Check model with dead load Go to Bridge Update Link bridge model Update as spine model using frame objects

27 Click set displace option Click extrude view and click ok

28 Now bridge represented by line element Then run the analysis by click this

29 Select the Modal and click do not run case And press run now

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31 Check bending moment diagram Press frames /cables Select moment 3-3

32 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

33 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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35 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

36 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

37 Go to display Then show lane Show lane width And be sure that u get figure below

38 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 HSn44

39 HSn44 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

40 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

41 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

42 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

43 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

44 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

45 Now run the analysis Wait until analysis complete Close the small window when u see analysis completed successfully u will see page below

46 Now u can get any results you want from display button

47 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

48 Add the vehicles one by one and obtain the final figure of the box as in fig below then click ok

49 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

50 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

51 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

52 Click on the modify/show button next to damping

53 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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55 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

56 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

57 Go to display Click Show bridge forces/stresses U can get all the moment and shear diagrams from this page

58 Now u can get all the results of structure analysis of the bridge