ANALYSIS OF LONGITUDINAL CRACKING MECHANISM OF GFRP PRE-TIGHTENED TEETH CONNECTION UNDER TENSILE LOAD

GAO Jiangang; ZHAO Qilin; LI Fei; KE Minyong

doi:10.13204/j.gyjzG201908190001

Volume 50 Issue 8

Oct. 2020

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GAO Jiangang, ZHAO Qilin, LI Fei, KE Minyong. ANALYSIS OF LONGITUDINAL CRACKING MECHANISM OF GFRP PRE-TIGHTENED TEETH CONNECTION UNDER TENSILE LOAD[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 182-188. doi: 10.13204/j.gyjzG201908190001

Citation:

GAO Jiangang, ZHAO Qilin, LI Fei, KE Minyong. ANALYSIS OF LONGITUDINAL CRACKING MECHANISM OF GFRP PRE-TIGHTENED TEETH CONNECTION UNDER TENSILE LOAD[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(8): 182-188. doi: 10.13204/j.gyjzG201908190001

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ANALYSIS OF LONGITUDINAL CRACKING MECHANISM OF GFRP PRE-TIGHTENED TEETH CONNECTION UNDER TENSILE LOAD

doi: 10.13204/j.gyjzG201908190001

1. Uint 32184 of PLA, Beijing 100072, China;
2. College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China;
3. College of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
4. Nanjing Hydraulic Research Institute, Nanjing 210029, China

Received Date: 2019-08-19

Abstract

Abstract

It was found that longitudinal cracking phenomenon could be observed in tensile fatigue test of GFRP pre-tightened teeth connection (PTTC), which seriously affected the static and fatigue properties of the joint. The mechanism of longitudinal cracking was explained from two aspects by theoretical and numerical analysis. The results showed that: the internal interference fit of aluminum sleeve and the tensile load acting on the end of GFRP tube leaded to excessive hoop tensile stress in GFRP tube. Meanwhile, under tensile load, the helix angle caused torsional shear stress in GFRP tube. For the unidirectional fiber reinforced GFRP pultrusion tube, its tensile property was poor, so the hoop tensile stress should be strictly controlled or avoided in engineering.
- GFRP tube,
- pre-tightened teeth connection (PTTC),
- tensile,
- longitudinal cracking

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References(12)

References

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