221-0302/01 – Prestressed Concrete (PRB)
| Gurantor department | Department of Structures | Credits | 5 |
| Subject guarantor | doc. Ing. Pavlína Matečková, Ph.D. | Subject version guarantor | doc. Ing. Pavlína Matečková, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2019/2020 | Year of cancellation | |
| Intended for the faculties | FAST | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
After completing this subject, students will be able to understand and apply the following skills and topic areas:
- design and assessment of prestressed concrete elements and structures;
- prestressed elements and structures of bridges, civil and industrial buildings.
Teaching methods
Lectures
Individual consultations
Tutorials
Project work
Summary
Students are supposed to achieve basic knowledge in design of prestressed load bearing structures. Students get to know effect of prestressing on structures and technology of pre-tensioned and post-tensioned prestressed concrete. Students are acquainted with design of pre-stressing using different methods and with changes of prestressing. Students get knowledge about assessment of prestressed structure according to ultimate and serviceability limit state.
Compulsory literature:
- EN 1992-1-1 Eurocode 2: Design of concrete structures - part 1-1: General rules and rules for buildings, CEN 2004.
- Navrátil, J.: Prestressed concrete structures. VŠB TU Ostrava, 2014.
Recommended literature:
- EN 1992-2 Eurocode 2: Design of concrete structures - part 2: Concrete bridges - design and detaining rules.
- Collins, M. P., and Mitchell, D. Prestressed Concrete Structures, Prentice Hall, Englewood Cliffs, New Jersey, USA, 1991.
- Lin, T. Y., and Burns, N. H. Design of Prestressed Concrete Structures, Third Edition, John Wiley & Sons, New York, 1982.
- Prab Bhat: Prestressed concrete design to Eurocodes, Spon Press 2011.
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
At least 70% attendance in the tutorial. Absence, up to a maximum of 30%, must be excused and accepted by the teacher (the teacher decides the reasonableness of the excuse).
Tasks assigned in tutorial must be hand in within the deadline set by the teacher.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
1. Principle of prestressed concrete. Effect of prestressing on structures, equivalent load method.
2. Statically determinate and indeterminate effect of prestressing. Pressure line, concordant cable, linear transformation of cable.
3. Design of prestressing using load balancing method. Design using limitation of normal stress. Design using concordant cable.
4. Basic terminology, prestressing reinforcement. Technology of post tensioned prestressed concrete. Prestressing systems and its components. Single cable and multi cable systems and manufacturing procedure.
5. Technology of pre tensioned concrete.
6. Short term changes of prestressing. Changes of prestressing due to shrinkage, slip in anchoring, elastic deformation, progressive prestressing. Short term changes due to relaxation of reinforcement.
7. Long term changes of prestressing. Changes of prestressing due to reinforcement relaxation and concrete creep and shrinkage.
8. Time dependent analysis. Limitation of normal stress. Cable detaining.
9. Bending moment load bearing capacity. State of decompression. Basic stress, basic prestressing force.
10. Analysis of ultimate and serviceability limit state using initial stress.
11. Shear force and torsion load bearing capacity. Shear before crack formation. Shear after crack formation. Strut and tie model. Interaction of internal forces.
12. Serviceability limit state. Limitation of stress. Limitation of cracks. Limitation of deflection.
13. Analysis of anchoring zone, zone under anchors, anchoring with cohesion.
14. Material characteristics, concrete, grouting mortar, reinforcing and prestressing reinforcement.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction