Seismic Passive Control of Cable-Stayed Bridges

Elastic-plastic Seismic Behavior of Long Span Cable-stayed Bridges

This paper investigates the elastic-plastic seismic behavior of long span cable-stayed steel bridges through the plane finite-element model. Both geometric and material nonlinearities are involved in the analysis. The geometric nonlinearities come from the stay cable sag effect, axial force-bending moment interaction, and large displacements. Material nonlinearity arises when the stiffening ste...

Phase I Benchmark Control Problem for Seismic Response of Cable-Stayed Bridges

This paper presents the problem definition for the first generation of benchmark structural control problems for cable-stayed bridges. The benchmark problem is based on a cable-stayed bridge that is currently under construction in Cape Girardeau, Missouri, USA. Construction of the bridge is expected to be completed in 2003. The goal of this study is to provide a testbed for the development of s...

Motion Based Design of Cable-Stayed Bridges

Recent increases in limit spans of cable-stayed bridges have highlighted the need for new concepts in analysis and design. The increased flexibility requires more theoretical studies on non-linear behavior and on dynamic analysis. Design also is more oriented to a performance-based approach: motion control is more important than strength analysis. My main objective is to define what are the par...

Active Tendon Control of Cable-stayed Bridges: Theory and Implementation

This paper presents a strategy for active damping of cablestayed bridges, using active tendons. The first part of the paper summarizes the theoretical background: the control law is briefly presented together with the main results of an approximate linear theory, which allows to predict the closed-loop poles with a root locus technique. The second part of the paper reports on experimental resul...

Construction and Design of Cable-Stayed Bridges