Transfer length in full-scale pretensioned concrete beams with 1.4 m and 2.4 m section depths

Jun Mo Yang, Jin Kook Kim, Doo Yeol Yoo

Research output: Contribution to journalArticlepeer-review


This study aims to investigate the transfer length of full-scale prestressed concrete (PSC) beams with lengths of 30 m and 35 m and section depths of 1.4 m and 2.4 m for highway and railway bridge girders, respectively. To do this, newly developed high-strength (fpu of 2400 MPa) prestressing (PS) strands were used. The initial and effective prestressing forces applied were 94% of the yield strength and 70% of the ultimate tensile strength of the strands. The difference between the transfer lengths at the cut end and dead end was reduced by increasing the section depth. Greater strains were found at the cut end due to a lateral expansion of the strands by the Hoyer effect compared with those at the dead end, causing a greater stress concentration. The eight most widely used prediction models were adopted to predict the transfer lengths of high-strength PS strands in full-scale PSC beams, and it was found that all models significantly overestimated the transfer lengths. Accordingly, the conservative use of the ACI recommendation of 50db is suggested based on this study.

Original languageEnglish
Pages (from-to)433-444
Number of pages12
JournalEngineering Structures
Publication statusPublished - 2018 Sept 15

Bibliographical note

Funding Information:
This research was supported by the Keimyung University Research Grant of 2018.

Publisher Copyright:
© 2018 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering


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