Project 2 - MODELLING, ANALYSIS & DESIGN OF COMPOSITE STUCTURES IN COMFLOR & ETABS
a. Modelling
To start the project, you need to prepare a structural model that will be used for the project. You need to create two distinct structural framing plans that will show the location of primary and secondary beams as discussed in Lecture 11. Afterward, you need to create a member definition for the steel sections by importing through the library. Then, you need to select a deck slab profile and section using the Comflor Manual. You need to model the composite metal deck section in ETABS and composite columns in ETABS. Finally, you need to create steel beam, steel column, bracing, and core wall properties to be used further in the project.
b. Loadings & Load Combinations
You need to use Comflor software to get wet concrete and construction loads for the design of deck slab. Then, use load patterns and combinations created in project 1 using ETABS. Definition of pre-composite dead loads is also necessary. You also need to define footfall loadings for the vibration checks.
c. Structural Analysis
Comflor software should be used to analyze the composite deck slab. Obtain the shear force and 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 the natural frequency for the floor system and mitigate the floor vibration by keeping the fundamental frequency above 3Hz.
d. Design of Structural Members
Design calculations for shear studs and composite deck should be made. Interpretation of the design results for the composite beam from ETABS should also be done. Pre-camber criteria and requirements should be fulfilled.
Key Deliverables:
The Comflor file should have the complete modeling of the slab with appropriate loadings. A Comflor report for the composite slab design (as a PDF file) should be submitted. The ETABS model with the complete model of the composite structure should also be submitted. Finally, a comprehensive project report from the ETABS software (as a PDF file) should be provided.