EQE 686 – Deformation-based Seismic Assessment and Design


INSTRUCTOR : Prof. Dr. M. Nuray Aydınoğlu
COURSE OBJECTIVES : The objective of the course is to provide a background for the theoretical and practical aspects of deformation-based seismic assessment and design. 


Deterministic and probabilistic approaches in seismic assessment and design

  • Aleatory and epistemic uncertainties in seismic assessment and design
  • Performance-based assessment and design by fully probabilistic approach
  • Performance-based seismic assessment and design by deterministic approach under probabilistically estimated seismic ground motion

Analysis and design approaches contained in 2018 Turkish Building Seismic Code (TBSC)

  • Strength-Based Seismic Design (SBD) Approach versus Deformation-Based Seismic Assessment and Design (DBAD) Approach

Nonlinear Equations of Motion

  • Elements of nonlinear equations of motion

Material nonlinearity

  • Plastic Hinge model – Stress Resultant Plasticity Theory: Plastic Flow Rule and Normality Condition
  • Elastoplastic Stiffness Matrix and Plastic Reduction Matrix

Geometric nonlinearity

  • Second-order Effects versus Large Displacement Effects
  • Rigorous Second-Order Stiffness Matrix
  • Approximate Second-Order Stiffness Matrix: Consistent Geometric Stiffness Matrix
  • Simplified Geometric Stiffness Matrix: P-Δ effects

Structural Modeling Requirements for Practical Nonlinear Analysis

  • Lumped plasticity versus distributed plasticity approaches
  • Plastic Hinge Model
  • Fiber Model

Nonlinear Analysis Procedures

  • Response-history analysis (RHA) of SDOF systems in time domain – Piecewise Linear Exact Method
  • Response-history analysis (RHA) of MDOF systems in time domain – Direct integration methods
  • Pushover analysis – Single-mode and multi-mode pushover analysis methods
  • Incremental Response-Spectrum Analysis (IRSA) Method for multi-mode adaptive pushover analysis

Assessment of Deformations and Internal Forces

  • Deformation acceptance criteria for ductile demand quantities
  • Strength acceptance criteria for brittle demand quantities
PREREQUISITES : EQE 530 or a similar course on Structural Dynamics
DURATION & HOURS PER WEEK : 12 weeks, 3 hours per week


  • 2 or 3 homeworks spread over the semester
  • Final exam on homeworks.


To be given in the course

(Course notes will be provided.)