Location

London

Event Website

http://www.csce2016.ca/

Description

A compiled database of 53 tests of FRP-reinforced concrete deep beams with shear span–depth ratios of less than two was used to evaluate the strut-and-tie models (STM) provided in ACI 318 (2014), CSA S806 (2012), CEB-fib (1999), and JSCE (2007). All provisions were found to be inadequate in calculating the capacity of FRP-reinforced deep beams due to inherent shortcomings in each provision. Hence, a new STM-based procedure for FRP-reinforced deep beams was proposed. The new model incorporates the effect of shear span–depth ratio (a/d), concrete compressive strength (fc’), and tensile strain in the adjoining tie (ε1). The contribution of the web reinforcement on the strut efficiency factor was found to be insignificant. The new model was capable of predicting the ultimate capacity of the compiled FRP-reinforced concrete deep beams with satisfactory conservatism.


Share

COinS
 
Jun 1st, 12:00 AM Jun 4th, 12:00 AM

STR-864: PROPOSED STRUT-AND-TIE MODEL FOR CONCRETE DEEP BEAMS REINFORCED WITH FRP BARS

London

A compiled database of 53 tests of FRP-reinforced concrete deep beams with shear span–depth ratios of less than two was used to evaluate the strut-and-tie models (STM) provided in ACI 318 (2014), CSA S806 (2012), CEB-fib (1999), and JSCE (2007). All provisions were found to be inadequate in calculating the capacity of FRP-reinforced deep beams due to inherent shortcomings in each provision. Hence, a new STM-based procedure for FRP-reinforced deep beams was proposed. The new model incorporates the effect of shear span–depth ratio (a/d), concrete compressive strength (fc’), and tensile strain in the adjoining tie (ε1). The contribution of the web reinforcement on the strut efficiency factor was found to be insignificant. The new model was capable of predicting the ultimate capacity of the compiled FRP-reinforced concrete deep beams with satisfactory conservatism.

http://ir.lib.uwo.ca/csce2016/London/Structural/40