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  • Deep Beam - Direct Modeling(2)

Product Information

Deep Beam - Direct Modeling(2)

Deep Beam Design – Direct Modeling(2)

http://astruttie.aroad.co.kr/help/Tutorial1/AStrutTie-Tutorial-DeepBeam.html

Truss

  • Select [Truss]
  • Click [Create Truss From Boundary]
  • Offset : 0.100 → [OK]

Load Assign

  • View Option- Boundary Load : True
  • Select two of the top of the absence by dragging
  • Click [Boundary Load to Truss Load]

Set Restraint

  • Select the leftmost joint of the lower part
  • [Assign Restraints]
  • Set hinge
  • Select the rightmost joint of the lower part
  • [Assign Restraints]
  • Set roller

Create Inner Element

  • [Add Combined Shape] – The function is activated only in Professional Version.
  • Select 2 Apply to left and right
  • Center-top, bottom member combination
  • Delete – Unnecessary element
  • Truss Modeling is complete.

Define Tie Types

  • Truss members are all created and proceed to tie and strut member settings.
  • Click [Define Reinforcement Ties]
  • Click [Add]
  • Rebar Name = Upper
  • Main Rebar Type = Top Main Rebar
  • Centroid of Rebar (mm) = 100.0
  • 1st Cycle Rebar Diameter = #8, No. of 1st Cycle Number = 8
  • Click [Add]
  • Rebar Name = Lower
  • Rebar Type = Main Rebar
  • Main Rebar Type = Bottom Main Rebar
  • Centroid of Rebar (mm) = 100.0
  • 1st Cycle Rebar Diameter = #8
  • No. of 1st Cycle Number = 8
  • Click [Add]
  • Rebar Name = Shear
  • Rebar Type = Shear Rebar
  • Shear Type = Vertical Shear
  • Diameter = #10
  • Number of Legs = 2
  • Rebar C.T.C (mm) =300

Assign Tie Types

  • Select upper element
  • Click [Assign Tie Type]
  • Choose [Upper] → O.K
  • Select bottom element
  • Click [Assign Tie Types]
  • Choose [Lower] → O.K
  • Select center element
  • Click [Assign Tie Types]
  • Choose [Shear] → O.K

Bearing Plate

  • Select load acting node
  • Click [Assign Bearing Plates]
  • Vertical plates
  • B = 400mm, L = 350mm, T = 50mm, Effective Width = 400mm
  • [OK]

Max. Width and Outer Element

  • Click [View Options]
  • Max. Strut/Tie Width – On
  • Click [Calculate Max. Width ]
  • The available widths of all elements in a strut-tie model, calculated automatically by the program,
    are displayed by executing the function DESIGN-Element Information or ASSIGN-Outer Element.
    The available widths can be modified.
  • Technical Reference
  • The protrusion at the top is the max width considering the bearing plate.
  • If you want to change the max width of a member, you can change it by two methods.
  • The first is assign of Outer Element, the second is edit of Element Information.
  • Reducing the maximum width with this function will result in a more secure design, but overshooting can be over-designed.
  • Technical Reference – example
  • Select Element 5
  • Click [Outer Element]
  • I : 247.3
  • Click [OK ]
  • Double Click [No. of Element]
  • Element 7, I-Width : 0.353
  • Element 8, I-Width : 0.353
  • Element 9, I-Width : 0.247
  • Click [Close ]

Assign Strut Types

  • Select all element
  • Click [Assign Strut Types]
  • Choose [Prismatic Strut] → O.K
  • Technical Reference
  • In this example, all struts are set to Prismatic, but you can apply them differently at the designer’s discretion.
  • An indeterminate truss will show different results depending on the selected strut type.

Truss Analysis and Design Review

  • 1. Truss Analysis
  • Click [Renumbering]
  • Click [Run Analysis]
  • 2. Design Review
  • Click [Design Review]
  • Need to increase the amount of lower rebar.
  • Click [Define Reinforcement Ties]
  • Lower 1st Cycle Diameter : #9 →[OK]
  • Click [Design review]
  • Main Rebar Tie is OK.

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