Creep behavior of glass fiber reinforced polymer tube filled with reinforced hollow concrete columns on axial compression
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TU378.3

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    Abstract:

    In order to study the characteristics of creep performance of glass fiber reinforced concrete hollow columns under axial compression, the mechanical properties were analyzed according to the mechanical characteristics of the hollow column under axial compression in this paper.The creep formula of the GFRP tube reinforced concrete hollow column was established under axial compression.A creep analysis program under the axial compression load was developed to calculate the creep strain-time relationship curve. And the correctness of creep program was verified by existing tests. On this basis, the influence of the main design parameters, such as applied load, thickness of GFRP tube wall, strength grade of concrete and hollow ratio on axial compression creep performance was calculated and analyzed.The results show that the creep of hollow columns increases rapidly in 28 days (the early stage of load action), and the growth rate becomes slower after 28 days.The creep tends to be stable after about 6 months. The hollow ratio and concrete strength have little effect on the axial compressive creep of GFRP concrete hollow columns,followed by the thickness of GFRP tube wall. The applied load has a greater effect on the creep.

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张霓,郑晨阳,羡丽娜,王连广.玻璃纤维管钢筋混凝土空心柱的轴压徐变性能[J].土木与环境工程学报(中英文),2021,43(6):88~94

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History
  • Received:May 26,2020
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  • Online: August 19,2021
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