To Analysis and Design of Steel Structures using TSD
QUESTION 1
Summarize your study for the bending moment, shear force, and deflection diagrams for the elements of the model
ANSWER 1
AIM
To summarize the bending moment, shear force, and deflection diagrams for the elements of the model
PROCEDURE
- Initially open the Tekla file you saved previously
- After opening the file - set 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 ant plane or cliff give or else chick next
- On the fundamental period- select structure as RC steel composite
- Click on Next
- In the seismic force-resisting system - select the typical Moment frame system - steel building with OMRF
- In Dir 2 select the bracing 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 on 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 analyze tab - Go to setting
- Under the modification factor tab - select steel
- Check for the tall factor to be 1
- You can modify the factor if needed
- Now to analyze the structure- click on 1st order analysis
- After selecting the combination and cases, you want to analyze
- Click on OK
- After the analysis is done - go to result view from bottom right corner
- On the result panel - Go to result - Moment major - Select the axis
- It 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 individually
- For now open frame A section
- The frame A above - the beam 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 critical failure of beam in moment major
- So we try changing the beam section to MB400
- After trial and error we rectify the error by giving the section of MB500 to the beams
- Similarly we check the other members and change the section or areas accordingly
Similarly do it for all other members and check for the errors
RESULT
The bending moment, shear force and deflection diagrams for the elements of the model has been summarized
QUESTION 2
Based on the analysis design the members and outline the thought process in selecting the member sizes along with the foundation design
ANSWER 2
AIM
To analyze and 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 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 click and check member - this foundation is failing under bending capacity
- So we try to increase the area of steel provided
- Provideing 25mm dia bars wit 300mm spacing and increasing the depths
- The dimensions of foundation is 2500mm both in X and 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 al other columns
- Check the foundation for the errors
- All foundations are check and no errors
RESULT
The analysis design the members and outline the thought process in selecting the member sizes along with the foundation design is done