Effect of Embedded Length of Steel Channel Sections on Precast Reinforced Concrete Beams

Authors

  • Jaksada Thumrongvut School of Civil Engineering, Institute of Engineering, Suranaree University of Technology
  • Sittichai Seangatith School of Civil Engineering, Institute of Engineering, Suranaree University of Technology

Keywords:

Precast reinforced concrete beam, steel channel section

Abstract

This paper presents the effect of embedded length of steel channel sections on precast reinforced concrete beams under transverse point loads. The objectives of this research work were to study the effect of embedded length of steel channel sections on the behavior, shear strength, and mode of failure of the beams. The beams had the cross section of 0.175 X 0.35 m and the span length of 4 m. The steel channel sections had the dimensions of 100 X 50 mm and were embedded at the supports with the embedded length of 50, 110, and 140 cm. From the tests, it was found that the beams had a bilinear behavior, in which the beams had the strength at the end of the first linear part up to 80 to 85% of the loads at the deflection of L/100. After that, the deflection of the beams was increased rapidly until the failure of the beams. The mode of failure of all the test specimens was in the form of diagonal shear failure. At the deflection of L/240, the precast reinforced concrete beams with steel channel section had the load capacity higher than that of the control beams by 10.2 to 37.6% and had the factor of safety in the range of 1.31 to 1.59. In addition, it was found that the shear strength of the beams was increased when the embedded length of steel channel section was increased.

 

References

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Published

2026-08-27

How to Cite

Thumrongvut, J., & Seangatith, S. (2026). Effect of Embedded Length of Steel Channel Sections on Precast Reinforced Concrete Beams. Suranaree Journal of Science and Technology, 13(1), 11–19. retrieved from https://ph04.tci-thaijo.org/index.php/SUJST/article/view/15946

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