Assessment of transmission length of prestressing strands according to fib Model Code 2010

作者：Dang Canh N^*; Hale W Micah; Marti Vargas J R

来源：Engineering Structures, 2017, 147: 425-433.

DOI：10.1016/j.engstruct.2017.06.019

• Pretensioned concrete
• Transmission length
• Transfer length
• Strand draw-in
• 18-mm strand
• High-strength concrete

The use of 18-mm prestressing strands is advantageous in the construction of long-span bridges. Transmission length is a significant parameter in the design of pretensioned concrete members. This study provides a unique set of experimental data to validate the applicability of using the fib Model Code 2010 to predict the transmission length and strand draw-in of 18-mm strands. Twelve pretensioned concrete beams were cast with high-strength concrete. Transmission lengths were measured at prestress transfer and at 28-day of age. The experimental results indicated the lower and upper bounds of transmission length specified by the code adequately predict the measured values.

• 出版日期2017-9-15