To Analysis and Design of Steel Structures using TSD
AIM: Summarize your study for the bending moment, shear force and deflection diagrams for the elemen 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->If any plane or cliff give
• or else click next
• on the Fundamental period->select structure as RC steel composite .
Click on Next
• In seismic force resisting system-select the type as Moment frame structure->steel building with 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 Ist 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
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 pade base foundation
• Select the pad base foundation-> Click on the column under which you want the foundation to be placed.
• Select the column ->Right clickand 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
• Similaryly 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 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