Challenge 5

Ans.

Aim and Introduction:-

• The aim of this challenge is to Prepare and analyse a transverse model of Deck slab in staad pro. with the given dimensions and specifications.
• So first of all the model will be created in Staad pro. by providing the reffered dimensions which is need to be analyzed.

Staad Model:

• The first node is to be created with 0,0 & 0 as co-ordinate.
• 
• Node in the transverse direction of the deck has been created as given.
• 
• Respective beams has been created connecting to the nodes.
• 
• Pinned support for the respective node at the girder locations has been defined and assigned.
  • 
• Property of the section as given has been defined and assigned.
  • 
• 3D view of the structure.
  • 

Loads & Definations:

• In load case details DL has been created. Then Self weight has been defined with a factor of -1 & applied to the whole structure.
  • 
• Then edge loads for the parapet loads has been defined as SIDL.
  • Considering the vertical load as 24KN with a moment of 0.5m eccentricity i.e. 12kNm at the end node in each sides.
  • 
• Then plinth loads for the strcture at the track beneath has been defined as SIDL.
  • As this load will be dispersed at an angle of 45 degree so the load will be applied on the model as uniform load.
  • Considering the magnitude of the load as 7KN/m
  • 
• Live loads for the structure fot the train loadings has been defined.
  • The magnitude of the loading 80 KN/m (i.e. 160/2) has been applied to the model at the girder loacations as uniform load above the plinth.
  • This live load is defined as trains on both the tracks at a time. (Live Load A+B)
  • 
  • This live load is defined as train loads on a single tracks. (Live Load A)
  • 
  • This live load is defined as train loads on different single tracks. (Live Load B)
  • 
• Different load combinations for the analysis has been defined for ULS & SLS case.
  • 

Material:

• New material with properties same as concrete & type as M55 has been defined and created.
  • 
• Assigning the created material to the whole structure.
  • 
• Then model has been analyzed and results with 0 error.
  • 

Results:

• Max deflection of the struture with summary sheet.
  • 
• Reactions with summary sheet.
  • 
• Value of Mz with summary sheet.
  • 
• Value of Fy with summary Sheet.
  •