Analysis and seismic sizing

Recommended Prerequisites

Mechanics II, Theory of Structures.

Teaching Methods

Presentation of concepts and of some practical exercises illustrating the application of those concepts using audio-visual support. Autonomous problem solving in which the students work out exercises problems of theoretical and practical application with the guidance of the teacher. It is also foreseen the observation of laboratory tests of bars in tension and in bending.

Learning Outcomes

The main purpose of the course is the theoretical development and application to practical situations of elastic vibrations and of analysis and seismic design of structures, with particular emphasis on steel and composite structures.
This course aims to provide students with the following skills:
- Understanding of the theoretical models of analysis and application of numerical methods in solving problems of structural dynamics
- Knowledge of practical application to the study of vibrations in buildings and bridges
- Specific knowledge about the European regulations, namely Eurocode 8.
- Ability to design structural solutions that can perform well in earthquake situations.
- Ability to use methods and software for automatic calculation.
- Ability to written and oral exposure.

Work Placement(s)

No

Syllabus

Part A - Structural Dynamics
1.    Introduction
2.    Single degree of freedom linear oscillator
3.    Continuous Dynamical Systems 4
4.    Discrete dynamical systems (several degrees of freedom)
Part B - Action Project Seismic and anti-seismic structures
5.     Seismology and characterization of the seismic action
Introduction to seismology and seismic analysis of structures, seismic risk;
Characterization of ground motion. Accelerograms. Models for quantification of the action.
Response Spectra.
6.     Effects of earthquakes on structures
Direct and indirect effects.
Lessons from past earthquakes.
7.    Linear seismic analysis of structures
Analysis using response spectrum and modal superposition.
Maximum value of elastic response. Concept of behavior coefficient.
Examples of application of the Eurocode
8.    Anti-seismic building structures
Structural design and seismic behavior. Analysis and design methodologies.
Detailed analysis of the methodology of EC8 for buildings.
Examples of application of EC8-1 and National Annex.

Assessment Methods

Continuous evaluation
Continuous evaluation: 100.0%

Bibliography

- Rebelo, C. (2009) Dinâmica de Estruturas - Apontamentos

- Chopra, A.K. (2001) Dynamics of structures: Theory and applications to Earthquake Engineering. Prentice Hall, New Jersey 2nd edition.

- Clough R.W. and Penzien J. (1975) Dynamics of Structures. McGraw-Hill Inc.,New York.

- Sen T.K. (2009) Fundamentals of Seismic Loading on Structures, John Wiley & Sons Ltd, Chichester.

- Bathe, K.L. and Wilson, E.L. (1976) Numerical Methods in Finite Element Analysis. Prentice Hall, New Jersey.

- Smith, J.W. (1988) Vibration of Structures : Aplications in Civil Engineering design, Chapman and Hall.

- Craig, Roy R. (1981) Structural dynamics: An introduction to computer methods. John Wiley & Sons Ltd.

- CEB (1991) Vibration problems in Structures,

- EUROCÓDIGO 8 - Estruturas em regiões sísmicas