Guided Online Course

If you are not currently logged into ASCE, you will be asked to login or create an ASCE account.

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