Course detail

Prestressed Concrete

FAST-BL011Acad. year: 2019/2020

Principle of prestressing. Basic concept of pretensioning and post-tensioning. Material properties, manufacturing, types. Pretensioning operations, technology. Post-tensioning operations, technology, prestressing systems.
Losses of prestressing of pretensioned and post-tensioned concrete, tendon profiles.
Equivalent load method, statically determinate and indeterminate structures, examples. Response of structures subjected to prestressing, simplifications, decompression state.
Resistance of prestressed members against cracks. Tensile stresses in the concrete after cracking. Control of crack width and deflection of prestressed members. Ultimate limit state of prestressed members, full stress-strain response, shear resistance.

Department

Institute of Concrete and Masonry Structures (BZK)

Learning outcomes of the course unit

A student gains these knowledge and skills:
• Understanding of the behaviour of prestressed concrete structures.
• Design of prestressed concrete structural members and structural systems, analysis and detailing.

Prerequisites

structural mechanics, theory of elasticity, plasticity, design concrete members and concrete structures

Co-requisites

Not applicable.

Recommended optional programme components

Not applicable.

Recommended or required reading

Not applicable.

Planned learning activities and teaching methods

Not applicable.

Assesment methods and criteria linked to learning outcomes

Not applicable.

Language of instruction

Czech

Work placements

Not applicable.

Course curriculum

1. Basic concept of prestressing. Behaviour of non-prestressed and prestressed concrete beams. Material properties of concrete.
2. Prestressing tendons and bars. Prestressing technology, basic terminology. Pretensioned concrete.
3. Post-tensioning operations, technology, prestressing systems.
4.-5. Losses of prestressing of pretensioned and post-tensioned concrete. Construction and serviceability stages.
6. Effects of prestressing. Equivalent load method. Concordant tendon, transformation of tendon.
7. Design of prestressing - load balanced method. Allowable stresses. Crack resistance.
8. Structural analysis of step-by-step built structures, non-homogeneity of structures. Creep analysis.
9. Ultimate limit state of prestressed members loaded by axial force and bending moment, decompression state, initial state of stress.
10. Prestressed members loaded in shear and torsion, stress analysis, proportioning.
11. Anchorage zone analysis, calculation model, check of resistance, proportioning.
12. Serviceability limit states (SLS). Crack resistance, tensile stresses in the concrete after cracking.
13. Control of crack width of prestressed members. Control of deflection.

Aims

Understanding of the behaviour of prestressed concrete structures.
Design of prestressed concrete structural members and structural systems, analysis and detailing.

Specification of controlled education, way of implementation and compensation for absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Classification of course in study plans

  • Programme B-P-C-SI (N) Bachelor's

    branch K , 4. year of study, winter semester, 5 credits, compulsory

  • Programme B-K-C-SI (N) Bachelor's

    branch K , 4. year of study, winter semester, 5 credits, compulsory

  • Programme B-P-E-SI (N) Bachelor's

    branch K , 4. year of study, winter semester, 5 credits, compulsory

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

seminars

26 hours, compulsory

Teacher / Lecturer

eLearning