Dapped ends of prestressed concrete thin-stemmed members: Part 2, design

摘要

This paper describes the design of dapped ends of prestressed concrete thin-stemmed members based on an experimental program conducted to identify the most effective reinforcement schemes and develop design guidelines for dapped ends. The testing was part of a research program that included 20 full-scale tests and extensive finite element modeling. The experimental program, under which promising reinforcement schemes and key parameters were tested, is described in a companion paper. This paper describes the development of design guidelines for dapped thin-stemmed members based on analytical studies and an experimental program. Several modified design practices for dapped double tees are recommended. Recommendations for control of cracking in the end region are also discussed.