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INSTRUCTORS:
Mohammad Aliaari, Ph.D., S.E., P.E.
Edwin Najarian, S.E., P.E.
Sponsored by ASCE's Structural Engineering Institute and ASCE Continuing Education.
Webinar Summary
Advanced nonlinear analysis of structures, as allowed by building codes such as IBC and ASCE 7, can reduce the amount of seismic retrofit required compared to traditional linear analysis methods. Nonlinear analysis is computationally intense compared to linear analysis, but it provides a more realistic presentation of building response in an earthquake. Fiber wrap is a high tensile capacity material that is becoming more popular nowadays and can be used in seismic retrofit projects to replace or to be used along with conventional structural material including concrete, steel and masonry. This webinar presents an introduction to performance based design using nonlinear analysis of structures and an overview of fiber wrap material. The practical application of these new analytical and material tools are presented through a successfully completed seismic retrofit hospital project in State of California, with brief discussion of governing regulations and standards.
Primary Discussion Topics
- Basis of performance based design
- Types of structural analysis
- In depth discussion on nonlinear analysis (pushover)
- Using fiber wrap material for seismic retrofit
- Presentation of an actual case example discussing regulations for seismic retrofit of hospital building in State of California
- Presentation of this case example discussing nonlinear analysis and fiber wrap material performed
Learning Outcomes
- Become familiar with performance based design basis and related standards
- Learn types of linear and nonlinear analysis and their pros and cons
- Gain in-depth information about nonlinear pushover analysis
- Learn about fiber wrap material and their advantages for seismic retrofit
- See advantages of using nonlinear analysis versus linear analysis in reducing amount, cost and duration of seismic retrofit
- Walk through application of nonlinear analysis and fiber wrap material via a successfully completed seismic retrofit project
- Find out about regulations of seismic retrofit of a hospital building in state of California
Webinar Benefits
- Be familiar with performance based design basis and related standards
- Learn about different types of linear and nonlinear analysis and their pros and cons
- Gain information about nonlinear pushover analysis and process
- Be familiar with fiber wrap material and their advantages for seismic retrofit compared to concrete, reinforcing bars, and steel
- Observe the great advantages of using nonlinear analysis versus linear analysis in reducing retrofit
- Discuss regulations for seismic retrofit of hospital buildings in California
Intended Audience
- Structural Engineers
- Public Agency Engineers
- Owners or Owner Representatives (for retrofit projects)
Webinar Outline
- An introduction to performance based design
- Overview of different analyses methods
- More details on nonlinear pushover analysis of buildings
- Overview of fiber wrap material
- Project case study:
- State regulations for seismic retrofit
- Building description and design criteria
- 3D nonlinear model
- Material and component definition
- Target displacement
- Limit states
- Analysis results and pushover curves
- Efficient retrofit required for construction