Axial behavior of concrete-filled carbon fiber-reinforced polymer composite columns

作者：Kim Heecheul; Lee Kyoung Hun; Lee Young Hak^*; Lee Junbok

来源：Structural Design of Tall and Special Buildings, 2012, 21(3): 178-193.

DOI：10.1002/tal.585

Concrete-filled carbon fibre-reinforced polymer (CFRP) composite columns without longitudinal and transverse reinforcing steels were tested to perform both experimental and analytical investigations of the axial behaviour of circular columns confined with CFRP composite tubes. The tubes were manufactured by wrapping the CFRP sheets with 90 degrees + 90 degrees, 90 degrees +/- 75 degrees, 90 degrees +/- 60 degrees, 90 degrees +/- 45 degrees, 90 degrees +/- 30 degrees wrapping angles with respect to longitudinal axis of the tube. Monotonic axial loads were applied to the gauge-instrumented concrete-filled CFRP tubes. The effects of fibre-wrapping angle, thickness of tube, as well as transverse dilation on stressstrain relationships of the confined columns, were identified and discussed. Proposed models to predict both the strength and the ductility of columns confined with CFRP composite tubes show good agreement with the test results.

• 出版日期2012-3