To Analysis and Design of Steel Structures using TSD
AIM: Summarize your study for the bending moment, shear force and deflection diagrams for the elements of the model
PROCEDURE:
- Initally open the Tekla file you saved prviously
- After opening the file->We ste the Seismic data in the structure
- To set->go to Load panel->Under seismic load go to Seismic wizard
- Select the code spectra->Next
- A new tab opens->Check the base information of the model
- Check seismic zone and site->Click Next
- Now set the structure irregularities
- or else click next
- on the Fundamental period->select structure as RC steel composite
- Click on Next
+- In seismic force rsisiting system->select the typeI as Moment frame systems->steel building with OMRF
- In Dir2 select the braced system ->building with SBF and concentric braces
- On the next tab->exclude the service load and select all others
- click next
- Select the seismic combination ->click next
- Click om finish
- Now go to load combination->click on generate
- Click next and select the load combination and finish.
- Now before starting the analysis we check the factors
- Go to Analyse tab->Go to settings
- under the modification factors tab->select steel
- check for tall the factors to be 1.0
- you can modify the factors if needed
- Now to analyse the strcutre->click on 1st order analysis
- After select the combination and cases you want to analyze
- click on Ok
- Aftfter the analysis is done ->go to result view from the bottom right corner
- On the result panel->Go to result->moment Major->Select the axis
- It'll show the results of the bending Moment Major
- These are the loads of Effective Seismic weight
- Shear major
- Axial force
- Now check for the frames members indvidually
- For now open frame A section
- The frame A above->The beams shown in red has failed so we try to check the member
- select the beam->right Click->Check member
- Click on check member->a list is shown here the crictal failure of beam in moment major
- So we try changing the beam section to MB400 (Previously MB300)
- After trial and errors we rectify the error by giving the section of MB500 to the beams
- similarly we check the other members and change the sections or areas accordingly
- Similary do it for all other members and check for the errors
2
AIM:Based on the analysis design the members and outline the thought process in selecting the member sizes along with the foundation design
PROCEDURE:
- Now for the design of the foundation under the columns
- Go to the foundation tab
- Open the base level ->Under the foundation panel click on pad base foundation
- Select the pad base foundation->Click on the column under which you want the foundation to be placed.
- Select the column ->Right click and check members ->This foundation is failing under bending capacity
- So we try to increase the area of steel provided
- Providing 25mm dia bars with 300mm spacing and increasing the depths
- The dimension of foundation is 2500mm both in X&Y direction and depth 850mm
- we again check the foundation and the errors are removed
- Similarly we provide foundation to all other columns
- Select the foundation ->copy and apply to all other columns.
- Check the foundation for the errors
- All foundation are check and there are no shown errors
RESULT:
- Successfully desgined the foundation and the beams
- removed the errors of the section which were failing under the critical loads