Steel and Composite Structures
Keywords |
Classification |
Keyword |
OFICIAL |
Structures |
Instance: 2010/2011 - 1S
Cycles of Study/Courses
Acronym |
No. of Students |
Study Plan |
Curricular Years |
Credits UCN |
Credits ECTS |
Contact hours |
Total Time |
MIEC |
51 |
Syllabus since 2006/2007 |
5 |
- |
5 |
60 |
133 |
Teaching language
Portuguese
Objectives
Based on the knowledge gained in the study of Strength of Materials complemented with concepts from the Theory of Instability and with specific regulations, a series of common problems in the area of Steel and Composite Steel-concrete structures are proposed. These applications will allow future engineers an easy integration into practical civil engineering activity.
Given the reduced number of classes allowed for this subject, no particular emphasis is given to the issues related with definition of loads and design factors (RSA and EC1) and it is assumed these matters have been presented in other subjects.
Program
1. Materials (EC3)
Mechanical properties of steel. Steel products (reference to steel profiles of european, british and american series).
2. Structural analysis
Global analysis of steel frames: P-Delta and P-delta effects. Elastic vs plastic analysis, simplified vs exact 2nd order analysis. Restrained and unrestrained frames.
3. Cross sections
Classification of cross sections according to EC3. Determination of effective class 4 sections.
4. Design of tension and bending elements
Design of structural elements in tension and bending. Shear resistance of cross sections. Interaction between bending moments and shear forces. Interaction between bending moment and axial forces.
5. Design of bars in compression
Study of study of structural elements subjected to compression forces. Critical Euler buckling load. Slenderness of compressed element.
Design of compressed elements according to REAE and EC3. Direct design of members formed by associations of angles: reference to the design of lattice structures. Buckling lengths of structural elements integrated in plane frames of regular geometry: application of EC3 criteria.
6. Lateral buckling of structural elements
Critical buckling moments: exact and approximate formulae. Lateral buckling coefficients. Equivalent moment coefficients. Effect of the level of application of loads.
Design and verification of stability of beam-columns subject to lateral bending/ torsional buckling according to EC3.
7. Local shear buckling
Critical stresses in the elastic branch of web plates simply supported in the boundary, submitted to uniform compression and shear forces. Critical Euler stress and buckling coefficients. Interaction formulae considering a combination of compression and shear. Elasto-plastic branch. Design of horizontal and vertical web stiffeners.
8. Design of structural elements subjected to axial compression and bending moments
Assessment of slenderness and interaction resistances. Verification of resistance and statbility according to EC3.
9. Steel-concrete composite structures
Introduction to the study of composite steel-concrete structures. Behaviour of composite steel-concrete beams. Design principles according to EC4. Classification of composite steel-concrete cross sections.
Design of composite steel-concrete beams according to EC4. Influence of constructive process. Effects of shrinkage and creep. Verification for service load combinations.
Design of shear connection using headed stud connectors.
Design of composite steel-concrete columns.
10. Joints
Basic principles in the design of bolted joints: design of the flexible and stiff joints.
Welded joints: design of welds for the flange-web connection of the steel beam.
Mandatory literature
Simões Rui; Manual de Dimensionamento de Estruturas Metálicas, CMM, 2005. ISBN: 972-98376-6-1
EN 1993-1-1:2005 (Eurocódigo 3)
EN 1993-1-8:2005 (Eurocódigo 3)
EN 1994-1-1:2004 (Eurocódigo 4)
Regulamento de Segurança e Acções (RSA)
ESDEP
Luís Calado; João Santos; Estruturas Mistas de Aço e Betão, IST Press, 2010. ISBN: 978-972-8469-84-9
Elsa Caetano; Estruturas Metálicas e Mistas, transparentes de apoio às aulas teóricas e práticas, 2008/09
Complementary Bibliography
Arguelles Álvarez, Ramón 070;
Estructuras de acero. ISBN: 84-930002-8-0 (vol. 1)
Teaching methods and learning activities
Practical course that employs knowledge from Strength of Materials to practical applications in the context of Steel Construction and Composite Steel-concrete structures.
keywords
Technological sciences > Engineering > Civil engineering > Structural engineering
Evaluation Type
Distributed evaluation with final exam
Assessment Components
Description |
Type |
Time (hours) |
Weight (%) |
End date |
Attendance (estimated) |
Participação presencial |
48,00 |
|
|
|
Trabalho escrito |
8,00 |
|
2010-11-29 |
|
Trabalho escrito |
8,00 |
|
2010-12-17 |
|
Exame |
2,50 |
|
2011-01-31 |
|
Total: |
- |
0,00 |
|
Calculation formula of final grade
The final classification is the result of a weighting of the Special Work and the Final Exam by 15% and 85%, respectively, in case the student delivers the proposed work within the specified deadline. The final approval requires a minimum classification of 8 /20 in the Final Exam.
Examinations or Special Assignments
Design example of small building structure. Optional
Special assessment (TE, DA, ...)
Final exam.
SPECIAL RULES FOR MOBILITY STUDENTS:
Proficiency in Portuguese and/or English;
Previous attendance of introductory graduate courses in the scientific field addressed in this module;
Evaluation by exam and/or coursework(s) defined in accordance with student profile.
Classification improvement
Final exam.
Observations
...........................................................
Estimated working time out of classes: 4 hours
SPECIAL RULES FOR MOBILITY STUDENTS:
Proficiency in Portuguese; Previous attendance of introductory graduate courses in the scientific field addressed in this module.