Course program
1 DESIGN CONCEPT AND APPROACH TO NUMERICAL ANALYSIS OF STEEL STRUCTURES
- Structural types that lend themselves to the use of steel and specific design problems.
- Design concept of the structural scheme in relation to the variation of the building height.
- Design philosophies of steel structures (simplicity, symmetry, load paths, continuity).
- Multi-level analysis and modeling.
- Specific vulnerabilities.
2. GLOBAL PLASTIC BEHAVIOR OF STEEL STRUCTURES
- Semi-rigid nodes, modeling in elastic field.
- Plasticity at material, section and structure level.
- Instability in linear and non-linear elastic field.
- Semi-rigid nodes, modeling in elastic-plastic field.
3. GLOBAL STRUCTURAL MODELING OF STEEL STRUCTURES
- Numerical modeling in elasto-plastic field of steel structures.
- Push-over analysis.
- Limit analysis.
4. MODELING AND DESIGN OF STRUCTURAL STEEL CONNECTIONS FOR DUCTILE AND/OR DISSIPATIVE BEHAVIOR
- Morphology and verification of complex steel connections
- Hierarchy of strengths Connection-structural element
- Ductility design of steel connections
- Dissipation and damping induced by connections
- Detail modeling of connections
5. SPECIFIC DESIGN PROBLEMS
- Design in Seismic zone for steel.
- Structural Strength of Steel Buildings.
- Behavior and Design of steel structures under the action of Wind.
- Optimization.
6. SETTING AND REVISIONS OF THE PROJECT ELABORATION
- Conceptual Design
- Pre-dimensioning
- Vibration analysis of floor
- Calculation of acting loads and their combinations (including earthquake and wind)
- Performance-Based of structural members
- Design optimization
- Technical drawings
Prerequisites
- Contents of CStructural Mechanics Courses: a. equilibrium of rigid bodies (IMPORTANT); b. calculation of stress characteristics in elastic deformable beams (INDISPENSABLE);
- Contents of Structural Design Courses (recommended texts below n. 3): a. basic concepts on the morphology of steel structures (INDISPENSABLE); b. Bilinear elasto-plastic constitutive law and plastic analysis of steel beam sections (INDISPENSABLE); c. Eulerian instability (INDISPENSABLE);
- Contents of Structural Dynamics and Seismic Design Courses (recommended texts below n.4): a. site seismicity (RECOMMENDED); b. pronciples of capacity design (RECOMMENDED); c. modal analysis, SDOF dynamics, and response spectrum (INDISPENSABLE)
Books
1. N. Scibilia. Progetto di strutture in acciaio, Dario Flaccovio Editore, 2010.
2. M. Bruneau, Chia-Ming Uang, A. Whittaker, Ductile Design of Steel Structures, 1998
3. CNR-DT 207 R1/2018. Istruzioni per la valutazione delle azioni e degli effetti del vento sulle costruzioni. https://www.cnr.it/it/node/9550
Teaching mode
Blended modality (in-person and distance learning), using whiteboard and, to a lesser extent, slides.
Frequency
In -presence, both for lectures and project advancement meetings
Exam mode
The examination consists of an oral test on the theoretical aspects at the base of the analysis and design of steel structures and in the presentation and discussion of the structural project and calculation report of a medium-high building that the Student agrees with the Teacher and develops from the elements provided during the lessons and the exercises. Numerical evaluations may be developed (at the student's option) using ANSYS, SAP2000, STRAUS7, ABAQUS computational codes
Bibliography
4. F. Bontempi, S. Arangio, L. Sgambi, Tecnica delle Costruzioni. Basi della progettazione – Elementi intelaiati in acciaio, Carocci Editore, 2008
5. M. Wakabaiashi. Progettazione di Strutture antisismiche, McGraw-Hill, 1989.
6. Bontempi F., Aguinagalde A., Petrini F. Progettazione Strutturale Antincendio - Come sviluppare analisi strutturali e verifiche di sicurezza in caso di incendio. Dario Flaccovio Editore, 2021
Lesson mode
In -presence learning, using whiteboard and, to a lesser extent, slides. Dedicated Classroom page, with teching material available to students