Introducing a benchmark control problem for a cable-stayed bridge subjected to seismic excitation

This paper defines the first-generation benchmark structural control problem for cable-stayed bridges. The problem is based on the cable-stayed bridge that will span the Mississippi River and is currently under construction in Cape Girardeau, Missouri, USA. The goal of this study is to provide a test bed for the development of strategies for the control of cable stayed-bridges. A three-dimensional finite element evaluation model has been developed to represent the complex behavior of the full-scale benchmark bridge. Evaluation criteria are presented for the design problem, consistent with the goals of seismic response control of a cablestayed bridge. Control constraints are also provided. Each participant in this benchmark study is given the task of defining, evaluating and reporting on his or her proposed control strategy. Strategies may be passive, active, semi-active, or a combination thereof. The problem has been made available for downloading through the Internet in the form of a set of MATLAB(R) programs. A sample control design is included to guide participants through the benchmark problem.