GENERAL OBJECTIVESSPECIFIC OBJECTIVESSEMESTER PROJECTDESCRIPTIONIMPORTANT DATES FOR THE PROJECTPROJECT REPORT FORMAT*IMPORTANT DATES (as previously shown):WeekElement of Seismology and Seismicity2.1 to 2.14 ---Dynamic Analysis of Structures------3.1 to 3.4TEACHING ASSISTANT:UNIVERISTY AT BUFFALO SPRING 2009 CIE 619 – STRUCTURAL DYNAMICS & EARTHQAUKE ENGINEERING II ANDREI M REINHORN Page 1 of 6 GENERAL OBJECTIVES The CIE 619 course allows structural engineers to consolidate their knowledge on the effect of earthquake ground motions on civil engineering structures. The course will cover the analysis and the design of structures made of various materials that are located in active seismic zones. The course will also introduce the use of supplemental damping and seismic isolation systems to raise the seismic performance of buildings and bridges. The course will also call upon the critical sense of structural engineers in order to allow the seismic evaluation of existing structures. Finally, the course will allow structural engineers to acquire new basic knowledge in earthquake engineering that will allow them to communicate better with scientists and engineers of other disciplines in earthquake engineering (e.g. seismologist, geotechnical engineers, etc.). SPECIFIC OBJECTIVES The specific objectives of the various elements of the course are outlines below: 1. At the end of this chapter, structural engineers will have an appreciation of the history of the development of earthquake engineering worldwide and will also gain knowledge on the development of seismic provisions in US building codes. INTRODUCTION TO EARTHQUAKE ENGINEERING 2. At the end of this chapter, structural engineers will have acquired basic sufficient knowledge in seismology and seismicity in order to correctly interpret the “language” of seismologists. They also will be able to perform simple calculations on recorded ground motions. ELEMENTS OF SEISMOLOGY AND SEISMICITY 3. At the end of this chapter, structural engineers will understand the basis of the procedures used to determine the seismic hazard level at a given based on past seismicity of the region, the level of attenuation of seismic waves and the design return period. Thus, they will be able to appreciate the origin of seismic hazard maps contained in current US building codes. ELEMENTS OF SEISMIC HAZARD ANALYSIS 4. At the end of this chapter, structural engineers will be able to: ELEMENTS OF SEISMIC ANALYSIS METHODS • Perform modal analysis of linear multi-degree-of-freedom systems subjected to ground excitations and understand the architecture of computer platforms capable of performing such analyses on complex structural systems. • Perform rapid spectral analyses of multi-degree-of-freedom systems subjected to earthquake ground excitations. • Perform static nonlinear analyses of multi-degree-of-freedom systems. • Perform nonlinear time-history dynamic analyses of multi-degree-of-freedom systems subjected to ground excitations. • Perform Incremental Dynamic Analyses. 5. At the end of this chapter, structural engineers will be able to understand the basis for the seismic design requirements included in the seismic provisions of ASCE 7-05. Recent seismic design procedures such as performance-based seismic design and direct displacement-based seismic design will also be discussed. ELEMENTS OF SEISMIC DESIGN 6. At the end of this chapter, will be able to: ELEMENTS OF ENERGY CONCEPTS IN EARTHQUAKE ENGINEERING • Derive the energy balance formulation for Multi-Degrees-Of- Freedom (MDOF) systems subjected to earthquake ground motions. • Understand the energy flow within a structural system under earthquake ground motion. • Establish the relationship between the absolute and relative seismic input energy. • Appreciate the effects of supplemental damping and seismic isolation on energy quantities.UNIVERISTY AT BUFFALO SPRING 2009 CIE 619 – STRUCTURAL DYNAMICS & EARTHQAUKE ENGINEERING II ANDREI M REINHORN Page 2 of 6 7. At the end of this chapter, structural engineers will be introduced to with the various innovative systems that have demonstrated considerable potential through analytical studies, experimental testing and actual structural implementation. The discussion will focus on passive energy dissipation systems and base isolation. ELEMENTS OF PASSIVE SUPPLEMENTAL DAMPING AND SEISMIC ISOLATION SUGGESTED TEXTBOOKS / REFERENCES: 1) Filiatrault, André (2002), “Elements of Earthquake Engineering and Structural Dynamics”, Second Edition, Polytechnic International Press, 2002. 2) Chopra, Anil K. (2001), Dynamics of Structures: Theory and Applications to Earthquake Engineering, Third Edition, Prentice Hall. 3) Bruce A. Bolt, Earthquakes – 4th Edition, , W.H. Freeman and Company, New York. 4) Christopoulos, Constantin and Filiatrault, Andre (2006), “Principles of Passive Supplemental Damping and Seismic Isolation”, IUSS Press. NOTE: Materials are not substitute for lectures. Often, different approaches of same principles will be presented in class COMPUTER: 1) Homeworks will require solution of matrix algebra or other math manipulations. You may use, but not exclusively, MatlabTM available in the Civil Engineering Computer lab. Student version can be downloaded from MATHWORKS website 2) The structural analysis program STAAD (latest version) or SAP2000 (latest version) will be also used. The PC-versions of these programs are available on the Civil Engineering Network. 3) An inelastic analysis program will be used for seismic evaluation and design; IDARC2D available to download from: http://civil.eng.buffalo.edu/idarc2d50/ 4) A program fro evaluation of design spectra can be downloaded from http://civil.eng.buffalo.edu/nspectra/ 5) FEMA154 Report will be distributed through the website ? 6) Alternatively other programs will be made available; a. RAUMOKO (Carr, Canterbury University, New Zealand) b. NONLIN (FEMA)UNIVERISTY AT BUFFALO SPRING 2009 CIE 619 – STRUCTURAL DYNAMICS & EARTHQAUKE ENGINEERING II ANDREI M REINHORN Page 3 of 6 SEMESTER PROJECT DESCRIPTION The objective of the project is to perform the visual screening of an existing building for potential seismic hazard. Students are divided into teams of three or four during the first lecture. The visual screening will be