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This course is a part of virtual ASCE Week. For full event details, go to www.ASCEWeek.org. Register for more than one ASCE Week course and save 20% with code ASCEWK20.
INSTRUCTOR: Praveen K. Malhotra, P.E., M.ASCE
Purpose and Background
The seismic performance of a structure depends on its: (i) weight, (ii) strength, (iii) deformability, and (iv) damping. Tall buildings weigh more (than short buildings) but they are also more deformable (than short buildings). Therefore, the height of a structure does not make it more vulnerable to ground shaking. An engineer may not have much control over the weight of a structure, but an engineer can control its strength, deformability and damping. Prescriptive seismic design relies only on strength to improve the seismic performance of a structure. Therefore, the prescriptive seismic design can be very costly or even impractical at times. Innovative seismic design incorporates deformability and damping to reduce the strength demand on a structure. Therefore, it results in a more economical design.
This class describes innovative solutions for the design of building structures, equipment, and nonbuilding structures. Real life examples are presented with emphasize on understanding. An intuitive approach is used to describe complex ideas. Questions and discussions are encouraged throughout the class.
Learning Outcomes
Upon completion of this course, you will be able to:
- Gain state-of-the-art knowledge in seismic resistance
- Quantify seismic performance of structures
- Explain the pros and cons of linear, nonlinear, static, dynamic methods of analysis
- Appreciate roles of damping and deformability in seismic design
- Explain sources of damping and deformability in structures
- Explain performance-based seismic design
- Utilize seismic design without the use of R factors
- Explain acceptable level of seismic risk
Benefits for Participants
- An intuitive understanding of complex ideas in seismic design
- An opportunity to ask questions on a variety of topics related to seismic resistance
- A condensed knowledge of ground motions and seismic resistance
Assessment of Learning Outcomes
Learning objectives are achieved through class participation, discussion, and short post-test.
Who Should Attend?
Structural engineers, geotechnical engineers, architects, regulators, building officials, owners, operators, geologists, seismologists, insurers, educators and students
Outline
Day 1 Thursday, September 23, 2021 | 11:00 a.m. – 3:30 p.m. ET
Session 1. Ground Motions from Past Earthquakes
- Acceleration, velocity and displacement histories
- Response spectrum of ground motion
- Acceleration-deformation response spectrum (ADRS)
Session 2. Ground Motions for Future Earthquakes
- Site-specific response spectra for static analyses
- Site-specific ground motion histories for dynamic analyses
Session 3. One-story Building Structures
- Moment frames
- Braced frames
- Plastic rotations, strain hardening, P-Delta effect
- Effect of torsional-irregularity
Session 4. Multi-story Building Structures
- Moment frames
- Braced frames
- Effect of soft-story (vertical irregularity)
Day 2 Friday, September 24, 2021 | 11:00 a.m. – 3:30 p.m. ET
Session 5. Sliding Response of Unanchored Equipment
- Nonlinear-static analysis
- Nonlinear-dynamic analysis
- Effect of friction on sliding response
Session 6. Rocking Response of Unanchored Equipment
- Nonlinear-static analysis
- Nonlinear-dynamic analysis
- Toppling response spectrum of ground motion
Session 7. Storage Racks
- Sliding of pallets in cross-aisle direction
- Collapse of racks in the down-aisle direction
- Cyclic tests of beam-column moment connections
- P-Delta effect
Session 8. Liquid-Storage Tanks
- Sloshing response of liquid
- Uplifting, sliding and plastic rotation at the base of tank
- Elephant-foot buckling
- Soil-structure interaction (SSI)
How to Earn your CEUs/PDHs
This online course is worth .8 CEUs/8 PDHs. To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 60 days of the course.