Behavior of Reinforced Concrete Beams with effect of Stiffened Plates

• This study presents experimental work including an investigation conducted on five simply supported reinforced concrete beams under pure torsion. First beam without strengthening as a control beam. The other four beams were strengthened externally by bolted thin steel plates. For this test the load was applied gradually. The torque was increased gradually up to failure of the beam.  The variables were the thickness and height of the steel plate that was externally connected to both sides  of the  rectangular  reinforced  concrete  beam.  The  test  results  for  the  beams  discussed  are  based  on  torque-twist behavior. The experimental results show that the attachment of thin steel plates by mechanical means to beams provides a considerable improvement in the torsional behavior of the reinforced concrete beams. Comparable to the reference beam, the maximum increase in the cracking and the ultimate torque of the composite beam was recorded for the reinforced concrete  beam  that  strengthen  by  steel  plate  of  150  mm  height,  2  mm  thickness  and  50  mm  spacing  between  shear connectors (B1). The results revealed that the cracking torque, ultimate torque, global stiffness of beam and beam ductility for all composite beams increase with the increase of the plate's thickness, plate's height.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Geoteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Geotechnical Engineering (hsv//eng)

Nyckelord

Torque

Reinforced Concrete

Steel Plate

Strengthening

Beams

Geoteknik

Soil Mechanics

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)