Code: | EC0053 | Acronym: | EMMI |
Keywords | |
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Classification | Keyword |
OFICIAL | Structures |
Active? | Yes |
Responsible unit: | Structural Division |
Course/CS Responsible: | Master in Civil Engineering |
Acronym | No. of Students | Study Plan | Curricular Years | Credits UCN | Credits ECTS | Contact hours | Total Time |
---|---|---|---|---|---|---|---|
MIEC | 39 | Syllabus since 2006/2007 | 5 | - | 5 | 60 | 133 |
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.
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.
DEMONSTRATION OF THE SYLLABUS COHERENCE WITH THE CURRICULAR UNIT'S OBJECTIVES:
The curricular unit aims to apply previously acquired knowledge and existing codes to the design of steel and composite structures. This curricular makes the transition between theoretical learning and professional activity within the design of these structures.
Practical course that employs knowledge from Strength of Materials to practical applications in the context of Steel Construction and Composite Steel-concrete structures.
DEMONSTRATION OF THE COHERENCE BETWEEN THE TEACHING METHODOLOGIES AND THE LEARNING OUTCOMES:
Teaching methodologies involve the study of main themes related to the design of steel and composite structures, analysis, discussion and critical interpretation of results, emphasizing the potential of written communication, problem formulation and design verification.
Designation | Weight (%) |
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Exame | 75,00 |
Teste | 25,00 |
Total: | 100,00 |
Designation | Time (hours) |
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Elaboração de projeto | 30,00 |
Estudo autónomo | 20,00 |
Frequência das aulas | 50,00 |
Total: | 100,00 |
Achieving final classification requires compliance with attendance at the course unit, according to the MIEC assessment rules. It is considered that students meet the attendance requirements if, having been regularly enrolled, the number of absences of 25% for each of the classes’ types is not exceeded.
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The final grade is based on a distributed evaluation and a final exam. The final approval of the student requires a minimum classification of 8,0/ 20,0 in the final exam. The distributed evaluation has an optional character, consisting of two practical assignements to be done individually or else in groups of 2 to 3 students. All evaluation components are expressed on a scale of 0 to 20.
The final grade is calculated by the following formula:
CF = max {CT ; EF}
where,
CT = PA / 5 x (2xT1+3xT2) + PF x EF
T1 - grade of assignment 1
T2 - grade of assignment 2
EF - grade of the final exam.
The weights associated with the indicated grades are as follows:
PA = 25%
PF = 75%
NOTE 1: The assignments associated with the distributed component are optional. If the student does not perform any of these assignements, the respective weights are added to PF.
NOTE 2: All students that are registered in the course are classified according to this method.
NOTE 3: The classification of the assignements of previous years cannot be tranferred to the present academic year.
Considering the optional character of the distributed evaluation, students with special registration will be subjected to the same evaluation rules as normal students.
The improvement of classification should be made through a final exam. The final classification is not cumulative with the distributed classification.
Estimated working time out of classes: 4 hours