Experimental study on axial compression bearing capacity of concrete short column strengthened with different fiber reinforced composites

doi:10.19936/j.cnki.2096-8000.20210828.010

Abstract

Abstract: Axial compression tests were conducted with 70 concrete short columns, including 5 concrete columns with square cross sections, 5 concrete columns with circular cross sections, 30 confining square concrete columns with fiber reinforced composite material and 30 confining circle concrete columns with fiber reinforced composite material. The effectiveness of strengthening between different shaped reinforcing columns with different FRP were analyzed and compared. Design values of compression bearing capacity were calculated according to Chinese "Code for design of strengthening concrete structure" (GB 50367—2013) and American "Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures" (ACI 440.2R-17). By comparing the test results and calculated results, the safety reserve of bearing capacity design value of FRP strengthened column in Chinese and American codes was analyzed. Suggestions for further revision on code for design of FRP strengthening concrete are put forward.

Key words: fiber reinforced composites, concrete column, FRP strengthening, axial compression bearing capacity, experimental study

CLC Number:

TB332

GUO Xiao-yun, CHEN Jie, TANG Yong-ming. Experimental study on axial compression bearing capacity of concrete short column strengthened with different fiber reinforced composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(8): 66-72.

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