Project 2 - MODELLING, ANALYSIS & DESIGN OF COMPOSITE STUCTURES IN COMFLOR & ETABS
40hr project on modelling, analysis & design of a state-of-the-art tall composite building using ETABS software. The composite members to be designed using Comflor software
a. Modelling
- The structural model prepared for the project 1to be used for the project 2.
- Prepare two distinct structural framing plans (location of primary & secondary beams) as discussed in Lecture 11.
- Create member definition for the steel sections by importing through library.
- Select deck slab profile and section using the Comflor Manual.
- Modelling of the composite metal deck section in ETABS
- Modelling of the composite columns in ETABS
- Create steel beam, steel column, bracing & core wall properties to be used further in the project.
b. Loadings & Load combinations
- Comflor: Wet concrete and construction loads for the design of deck slab
- ETABS: Use load patterns and combinations created in project 1
- Definition of Pre-composite dead loads
- Define footfall loadings for the vibration checks.
c. Structural Analysis
- Comflor software to be used for the analysis of composite deck slab
- Obtain the shear force & bending moment diagrams for the floor beams and columns.
- Check the gravity load path in the structure if it follows the designer’s intent.
- Perform quick hand calculations to confirm the base reactions for the gravity load cases.
- Check natural frequency for the floor system and mitigate the floor vibration by keeping fundamental frequency > 3Hz.
d. Design of structural members
- Shear studs & Composite deck design calculations
- Interpretation of the design results for the composite beam from ETABS
- Pre-camber criteria and requirements
Key Deliverables:
- Comflor file with the complete modeling of the slab with appropriate loadings
- Comflor report for the composite slab design (as PDF file)
- Submit a ETABS model with the complete model of the composite structure.
- A comprehensive project report from the ETABS software
