Civil and Environmental Engineering

Professor Romstad performs teaching and research in structural analysis and structural design, with a particular focus on the seismic behavior of bridge and building structures. Current research projects include modeling the mass, stiffness, and damping characteristics of bridge abutments with the goal of improving numerical models predicting bridge response during earthquakes and incorporating duration of earthquake motion into design methodologies to properly characterize induced structural damage during extreme seismic events.

Recent published research has emphasized developing reduced order numerical models which have the capability to accurately estimate nonlinear seismic response of large and complex structures on small computers.

Dr. Romstad has been the recipient of the Academic Senate Distinguished Teaching Award, the College of Engineering Alumni Teaching Award, the Magnar Ronning Teaching Award for the College of Engineering and the Outstanding Adviser Award for the College of Engineering.

S. Vukazich, K. Mish, and K.M. Romstad (1996). "Nonlinear Dynamic Response of Frames Using Lanczos Model Analysis." Journal of Structural Engineering, ASCE, pp. 1418-1426.

Y.H. Chai, K.M. Romstad, and S. Bird (1995). "Energy Based Linear Damage Model for High-Intensity Seismic Loading." Journal of Structural Engineering, ASCE, Vol. 121, No. 5, pp. 857-864.

D. McCallen and K.M. Romstad (1994). "Dynamic Analysis of Skewed Short-Span, Box-Girder Overpass." Earthquake Spectra, Vol. 10, No. 4, pp. 729-755.

D. McCallen and K.M. Romstad (1994). "Nonlinear Model for Building-Soil Systems." Journal of Engineering Mechanics, ASCE, Vol. 120, No. 5, pp. 1129-1152.

B. Maroney, B.L. Kutter, K.M. Romstad, Y.H. Chai, and E. Vanderbilt (1994). "Interpretation of Large Scale Bridge Abutment Test Results." Proceedings, Third Annual Seismic Workshop, Caltrans.

M.J. Chajes, K.M. Romstad, and D. McCallen (1992). " Analysis of Multi-Bay Frames Using a Continuum Model." Journal of Structural Engineering, ASCE, Vol. 119, No. 2, pp. 522-546.

Influence of Creep and Shrink-age on Behavior of Lightweight Concrete Bridges.

Development of Damage Calibrated Earthquake Response Spectra.

Abutment Mass, Damping, and stiffness Models Incorporated in Bridge Seismic Response.