• Performance-based seismic engineering
• Development of inelastic material and member models for nonlinear structural analysis
• Application of low-cycle fatigue concepts in seismic analysis and design
• Macro-model-based computational tools for nonlinear transient analysis of structures
• Seismic behavior of concrete and steel structures
• Simulation of structural collapse
• Soil-structure interaction problems
• Seismic retrofit and rehabilitation
• Instrumentation and experimental methods in support of model-based simulation

Selected Previous Research Grants

Simulation and Performance Models for Cyclic Degradation Effects in RC Bridge Columns

 funded by the Pacific Earthquake Research Center

I-880 Testbed project

funded by Pacific Earthquake Engineering Research (PEER) center

Development of Enhanced Pushover Procedure for Performance-Based Seismic Evaluation of Buildings

funded by the National Science Foundation

Seismic Behavior and Design of Hybrid Wall Systems

funded by the National Science Foundation under the US-Japan Cooperative Research program

• Ductility of Fully-Restrained Welded Bolted Connections
  • funded by SAC Phase II Project
• Cumulative Seismic Damage of Reinforced Concrete Bridge Piers 
  • funded by National Institute of Standards and Technology, US Department of Commerce
• Effects of Superstructure Flexibility on Dynamic Response of Concrete Bridges  
  • funded by Florida Department of Transportation
• Performance-Based Indicators for Seismic Evaluation of Structures
  • funded by National Center for Earthquake Engineering Research
• IDARC Modeling Developments :Phase I -IV (1992-96)
  • funded by National Center for Earthquake Engineering Research

Software Development

• IDASS: Inelastic Dynamic Analysis of Structural Systems