The bridge design project was done in seven-persons teams. I was a leader of the Hunch Team. The topic was to design tree-span, prestressed concrete bridge, rigidly connected with the pillars. The main span was 100 m and the side spans 60 m each. The box cross section was assumed with variating height from 6 m to 2.8 m. Balanced cantilever, segment lifting erection method was chosen.
I divided the work into few parts: initial dimensioning, description of erection method, load gathering, transversal design, FEM design, results analysis and preparing drawings. Because of the scale of the project I decided to do most of the work in Midas Civil software. The computer results ware the core of our documentation. The part of modelling the bridge I did personally, which also forced me to learn new program from the basis
The biggest challenge was to arrange active longitudinal reinforcement to assure compression in all building stages and exploitation stage and in the same to limit stresses in the concrete to medium value 15 MPa. This was possible only because of Midas and it's abillity to quickly calculate moment and stresses after cables rearrangement.
The final project was almost 200 pages long, congaing all the calculations and drawing. It wasn't though full documentation which allows to build such a structure. The main aim of this project was to improve our work-in-team skills and develop new software skills. At the end I presented out work to the rest of the group.
- EN 1992-2 Eurocode 2: Part 2: Reinforced and prestressed concrete bridges
- EN 1992 Eurocode 2: Design of concrete structures
- EN 1991 Part 2: Traffic loads on bridges
- EN 1991 Part 1-5: General actions - Thermal actions
- Midas Civil
- Autodesk Robot Structural Analysis Professional
- Autodesk Autocad