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(CIE619 - EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS II |
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LECTURES:
HOME WORKS:
GRADES
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SOFTWARE: |
COURSE 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 OBJECTIVESThe specific objectives of the various elements of the course are outlines below: 1. INTRODUCTION TO EARTHQUAKE ENGINEERING 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.
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.
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. 4. ELEMENTS OF SEISMIC ANALYSIS METHODS At the end of this chapter, structural engineers will be able to: · 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.
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. 6. ELEMENTS OF ENERGY CONCEPTS IN EARTHQUAKE ENGINEERING At the end of this chapter, will be able to:
7. ELEMENTS OF PASSIVE SUPPLEMENTAL DAMPING AND SEISMIC ISOLATION 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. 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 class website 6) Alternatively other programs will be made available; a. RAUMOKO (Carr, Canterbury University, New Zealand) b. NONLIN (FEMA) SEMESTER PROJECT
DESCRIPTIONThe 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 based on the FEMA-154 procedure published by the Federal Emergency Management Agency. This procedure does not require the use of structural drawings.
Each team will need to identify the building of their choice, perform the visual screening following the FEMA 154 procedure and complement it, if needed, with other analysis procedures of their choices. Single-story buildings cannot be selected. Architectural and structural drawings for UB buildings can be obtained by contacting Ronald C. Van Splunder at 645 6339 (x 338) or rvc3@buffalo.edu or rvansplu@facilities.buffalo.edu..
Each team will hand in only one project report at the last lecture summarizing their work and providing a final opinion on the potential seismic vulnerability of their building. The report must also provide preliminary retrofit procedures, if needed.
During the last lecture, each team will make an oral presentation to the class on the main findings of their project. This session will be open to the public.
The project will be evaluated on the following:
IMPORTANT DATES FOR THE PROJECT· February 5, 2009: Selection of the building: each team must hand-in a one page memo containing a brief summary of the building that they have selected including: building name, building location, No. of stories, Structural type, a photo of the building. · March 5, 2009: Progress Report: each team must a hand-in a one-page progress report on their project. · April 21, 2009: Project report: each team must hand-in their final project report.
PROJECT REPORT FORMAT*
The Project report must be limited to 10 pages (extra pages will not be read) and must include the following items:
1. Title page a) Title: RAPID VISUAL SCREENING OF THE (name of building) BUILDINGS FOR POTENTIAL SEISMIC HAZARDS – CIE 619 SPRING 2009 b) Team name (find one!) c) Group symbol/logo (make one up!) d) Names of team members e) Signatures team members (very important) f) Date
2. Summary (one page)
3. Description of Building
Building location, address, No. of stories, Year built (approx), Total floor area (approx), Type of occupancy, Structural type, Soil type, etc.
4. FEMA-154 Visual Screening Procedure a) Description of Procedure b) Results Obtained
5. Complementary Analysis Procedures (if any) a) Description of Procedures Used b) Results Obtained
6. Final Seismic Risk Evaluation
7. Proposed Retrofit Procedure (if any).
*Items 1 to 4 are minimum grade requirements for the project report CLASS SCHEDULE: (a) Lectures: Tu, Th, 11:00-12:20am, 260 Capen Hall, North Campus (b) Project report and oral presentation during the last week of classes (c) One 3-hour final exam (to be scheduled by University)
IMPORTANT DATES :· February 5, 2009: Selection of the building: each team must hand-in a one page memo containing a brief summary of the building that they have selected including: building name, building location, No. of stories, Structural type, a photo of the building. · March 5, 2009: Progress Report: each team must hand-in a one-page progress report on their project. · April 21, 2009: Project report: each team must hand-in their final project report.
GRADING POLICY:
Exams Materials: All exams are open materials (any), however, no material can be shared under any circumstances
GRADES ASSIGNMENT The final grade will be assigned according to the University policies (i.e. A, A-, B+, B, B-, C+, C, F, using a uniform distribution in steps of five points (A=95 and above, F=64 and below).
You MUST have a passing average in the individual examination, in order to pass this class. Failure to have a passing average of 50 will automatically result in an F grade. “Incomplete grades” will not be assigned, except for serious and well-documented reasons.
PREREQUISITES: CIE519-Structural Dynamics and Earthquake Engineering I
ACADEMIC INTEGRITY: Student conduct is governed by the rules of the University and students are expected to know and abide by the University policies on academic honesty and integrity. These policies state: “students are responsible for the honest completion and representation of their work, for the appropriate citation of sources, and the respect of other’s academic endeavors. By placing their name on academic work, students certify the originality of all work not otherwise identified by appropriate acknowledgements.” Violation of these policies is subject to penalties that include receiving a failing grade in the course, suspension and dismissal
INSTRUCTOR: Andrei M Reinhorn, PE, PhD Rm: 135 Ketter Hall Email: reinhorn@buffalo.edu Office Hrs: Tu, Th: 9:30-10:30; 1:00-2:00pm. Other times may be possible by appointment TEACHING ASSISTANT:TBA * MORE INFORMATION will be presented in class during the first week. Make sure you get it!!! HAVE A GOOD SEMESTER |
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