The control of very flexible bridge structures has not been studied to the extent that buildings have. As a result, little expertise has been accumulated. Thus, there is a consensus within the community that a benchmark problem at this stage would be premature. In its place, it is proposed that an analytical feasibility study be performed on a well-studied and documented bridge model, in order to identify and resolve important issues and problems associated with attempting to control a flexible bridge structure. Perhaps most importantly, since active control of medium and long span bridges has little history associated with it, the study will remain as open-ended as possible.
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