Design Developments for Extradosed Prestressed Bridges
Steven L. Stroh
Appears on pages(s):
aesthetics, bridges, construction, extradosed, fatigue, post-tensioning, proportioning parameters, stay cables
This paper provides a description and design developments of the extradosed prestressed bridge concept. The development of the extradosed prestressed bridge concept is discussed, drawing upon the differences with a cable-stayed bridge type. Proportioning parameters used for initial concept development or verification are provided. This includes recommendations on span ranges, structure depth, tower height and multi-span applicability. Stay cable design considerations are discussed. These proportioning parameters are applied to a prototype design, the Pearl Harbor Memorial Bridge. Aesthetic opportunities for this new bridge type are discussed.