STRUCTURES SEMINAR

 

 

Sponsored by:

Department of Architectural Engineering

Department of Civil & Environmental Engineering

Department of Mechanical Engineering

The Pennsylvania State University

 

 

May 11, 2000

 

 

“Advanced Methodologies for Bridge Design”

 

by

 

Dr. Santiago Hernandez

Professor of Structural Engineering

University of La Coruna, Spain

 

 

ABSTRACT

 

 

Bridges are an important tipology in structural engineering. To cross over topographical obstacles short, medium or long span bridges are designed to solve the problem posed to engineer. In this talk, two applications to bridge design for two different classes of problems will be presented. First, a computer software devoted to minimize prestressing forces in precast concrete beams, used in deck bridges of short or medium span length, will be described. Then, the subject of cable supported bridges with long span subjected to wind loads will be considered. It is very well known that the bad design of the Tacoma Narrows against this type of load led to the failure of that structure in year 1940. During the lecture, the current methodologies for dealing with aeroelastic response of long span bridges will be reviewed and a computer animation showing the deformation of a digital model of a long span bridge will be presented.