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Schedule
Week 1: Introduction and Basic Structural Dynamics
Learning outcomes:
- List and summarize the four seismic analysis methods in ASCE 7.
- Identify the important characteristics of structures related to dynamic analysis.
- Describe the basic process for solving structural dynamics problems.
Topics:
- Seismic analysis methods in ASCE 7
- Single degree of freedom structural dynamics
- Multi degree of freedom structural dynamics
Week 2: Structural Dynamics and ASCE 7 Analysis Methods
Learning outcomes:
- Differentiate between a response history plot from an individual dynamic analysis of a structure and a response spectrum used for determining structural response.
- Employ a response spectrum to determine a maximum response given the system characteristics.
- Identify and explain the inherent assumptions and the manner to consider inelastic response in the four seismic analysis methods.
Topics:
- Response history versus response spectrum
- Seismic analysis methods, their limitations and process
- Additional topics in structural dynamics
Week 3: Modeling Considerations Part 1
Learning outcomes:
- Construct a computational model including the required structural elements for a seismic load analysis.
- Implement the modeling procedures for rigid and semirigid diaphragm behavior in a 3-D structural analysis model.
- Discuss the issues related to including or excluding nonstructural components in the mathematical model.
- Calculate and apply the correct seismic mass to a structural analysis model.
Topics:
- Modeling structural elements for seismic load analysis
- Modeling diaphragms in 3-D seismic analysis models
- Including seismic mass in analysis models
Week 4: Modeling Considerations Part 2
Learning outcomes:
- Correctly apply lateral forces to structures with rigid and semirigid diaphragms.
- Assess the importance of P-Delta effects by including such effects directly in the analysis.
- Qualitatively assess a structure to determine when vertical accelerations would be required for seismic design.
- Correctly implement inherent damping in a computational model for linear response history analysis.
Topics:
- Including seismic forces and P-Delta effects in a seismic model
- Inherent damping in structures
- Vertical effects
- Overview of seismic isolation and supplemental damping
Week 5: Seismic Loading
Learning outcomes:
- Describe the impact of site conditions and site distance on seismic response of structures.
- Specify the criteria for selecting ground motion recordings for use in a response history analysis.
- Modify ground motion recordings using either amplitude scaling or spectrum matching based on the design response spectrum or a site-specific response spectrum.
Topics:
- Seismic loading of structures
- Response spectrum
- Ground motion record selection and modification
Week 6: Overview of ASCE 7-16 Analysis Requirements
Learning outcomes:
- Correctly select the appropriate analysis procedure.
- Implement the load combinations with seismic effects including the effects of orthogonal combination into an analysis model.
- Evaluate a structure to determine whether the redundancy factor, ρ , is 1.0 or 1.3.
Topics:
- Load combinations with seismic effects
- Selection of analysis procedure
- Effective seismic weight and structural modeling
Week 7: Unified Linear Dynamic Analysis Part 1
Learning outcomes:
- List the procedural steps for modal response spectrum and linear response history analysis.
- Identify and describe the similarities between MRS and LRH analysis, and how these can be used to formulate a “unified” approach.
- Select the correct number of modes based on the effective modal mass in a dynamic analysis to capture the response.
Topics:
- Unified linear dynamic analysis
- Modal response spectrum and linear response history analysis overview
- Similarities and differences between MRS and LRH
Week 8: Unified Linear Dynamic Analysis Part 2
Learning outcomes:
- Identify and describe the similarities between MRS and LRH analysis, and how these can be used to formulate a “unified” approach.
- Select and modify ground motions for use in the linear response history analysis method.
- Scale and combine results from orthogonal directions in the MRS and LRH.
Topics:
- Addressing differences between MRS and LRH
- Ground motion selection and modification
- Inherent damping
- Scaling and combining orthogonal direction results
Week 9: Development of Detailed Mathematical Model
Learning outcomes:
- Calculate the base shear and story forces using the equivalent lateral force method.
- Build and analyze a computational model in accordance with the equivalent lateral force method to determine force and drift demands under seismic loads.
- List and define the conformance checks required of all the analysis methods.
Topics:
- Detailed example structure description
- Implementation of the equivalent lateral force method for case study
- Conformance checks required for all analysis methods
Week 10: Modal Response Spectrum
Learning outcomes:
- Select the number of modes required by ASCE 7 to adequately capture total response using modal response spectrum analysis.
- Build an analysis model consistent with ASCE 7 requirement for modal response spectrum analysis.
- Calculate the seismic demands for a structure using the modal response spectrum analysis method.
Topics:
- Design spectrum and modal properties
- Determining modal responses
- Combining modal responses
- Scaling total response to ELF base shear
Week 11: Linear Response History
Learning outcomes:
- Select and modify ground motions for linear response history analysis using appropriate tools based on the design response spectrum.
- Build a structural analysis model consistent with the requirements for linear response history analysis.
- Calculate the seismic force and deformation demands on a structure using the linear response history analysis method.
Topics:
- Selection and modification of ground motion records
- Analysis and modeling details for linear response history
- Results of LRH analysis
Week 12: Analysis Results Comparison and Floor Response Spectra
Learning outcomes:
- Identify the differences in results computed using the equivalent lateral force, modal response spectrum, and linear response history analysis methods.
- Describe the process for determining floor response spectra that can be used for design of nonstructural components and systems.
- Calculate seismic forces on nonstructural elements using floor spectra.
Topics:
- Comparison of analysis method results
- Developing floor response spectra
- Calculating seismic forces for nonstructural components using floor spectra
This course outline is subject to change