CONCRETE AND STEEL STRUCTURES
The course aims to provide students with the necessary tools for the design and verification of reinforced concrete elements (RC elements) illustrating the properties of building materials, the resolution methods for static schemes, and evaluating actions and resistance according to the semi-probabilistic method of Limit States
The lessons are also aimed to give students the ability to independently carry out the numerical applications on the various topics discussed in the course.
Knowledge and understanding:
- knowledge about modelling of materials for RC elements (steel and concrete)
- ability in solving main isostatic and ipertastic schemes of beams and frames
- knowledge about design methods of RC elements under ultimate and serviceability states
Applying knowledge and understanding:
- ability into comparing behavior of structural elements made of different materials
- ability into use simple softwares, i.e. excel, for developing verifications of RC sections
- ability into individuating and comparing different solving procedures of the same problem
- ability to identify possible and potential connections between the various aspects of a subject and/or of a problem
- knowledge of the role of civil engineers in the society and of professional ethics
- Work together in a working group, defining objectives, activities, tools
- Present and articulate in writing and orally an elaborate group.
- Reflect on the knowledge and skills of their education
- Identifying possibilities for further development of knowledge, skills and competencies.
The knowledge and skills acquired in the course of Solid Mechanics are necessary:
In particular the minimum required knowledge are inherent to:
Geometry of the masses, Stresses and deformations in continuous field; Euler-Bernoulli beam theory; Resolution of isostatic structures and of statically indeterminate beams with force method; Analytical determination of the internal stress on the most common types of isostatic and continuous beams; Formulas of Navier and Jourawski; Strength criteria.
Methologies for solving structures (10 hours, 2 theory + 8 exercises)
The beam theory, resolutions of isostatic beams with calculation of reaction forces and stresses, solving statically indeterminate beams with force method.
Resolution of statically indeterminate structures with displacement method (12 hours, 3 theory + 9 exercises)
Resolution of beams and statically indeterminate frames with displacement method
Structural safety principles (8 hours, theory)
The Limit States approach limit, Ultimate Limit States (ULS) and Serviceability Limit States (SLS) for reinforced concrete elements, assessment of mechanical properties of materials (concrete and steel), evaluation of actions according to Italian Code (NTC 2008), wind actions, snow actions.
Design and verifications of RC elements (34 hours, 24 theory + 10 exercises)
Properties of reinforced concrete (tensile and compression strength of concrete, constitutive laws of concrete and steel, bond behavior) (4 hours)
Verification and design at ULS of RC sections under flexural moment with and without axial load (10 hours)
Verifications of RC elements at SLS (check of normal stresses, verification of cracking and deformability (8 hours)
Verification and design of steel reinforcements at ULS of RC elements under shear (8 hours)
Verification and design of steel reinforcements at ULS of RC elements under torsion (4 hours)
Design of a brick-concrete floor (8 hours, 2 theory + 6 exercises)
Floor typologies, principles of design of a brick-concrete floor, analysis of loading conditions, design of steel reinforcements, flexural and shear verifications, plan of steel reinforcements
Resolution of statically indeterminate structures with displacement method. Structural safety principles. Design and verifications of RC elements (bending with and w/out axial force, shear). Design of a brick-concrete floor.
Frontal lessons. Numerical exercises. Homeworks in groups (Design of a brick-concrete floor; resistance domain of a RC section under axial load and bending moment) aimed to verify level of knowledge and abilities.
- Lessons given by the teacher for the registered students on the website
- Normative tecniche: NTC 2008 e Circolare 617, Eurocodice 2
- Cosenza E., Manfredi G., Pecce M., Strutture in cemento armato. Basi della progettazione, Hoepli, Edizione 2015.
A final written test with numerical exercises is provided. In case of positive result of the written test, the student can access to the oral exam.
The following two exercises are assigned by the teacher during the year:
1) design of a RC brick-concrete floor;
2) strength domain of a RC section under axial force and bending moment.
The oral exam will be focused on the discussion of the written test, the exercises, the theoretical and calculation subjects explained during the course. The student has to demonstrate the knowledge of the instruments and resolution procedures used for solving the exercises and to justify the adopted solutions. The student has also to demonstrate the knowledge of theoretical and practical subjects explained during the course.