J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (6): 804-812.doi: 10.1007/s12204-020-2241-9

• Material, Structure, Mechanics • Previous Articles     Next Articles

Bond Mechanical Properties of Glass Fiber Reinforced Polymer Anti-Floating Anchor in Concrete Baseplate

BAI Xiaoyu1,2 (白晓宇), ZHENG Chen1 (郑晨), ZHANG Mingyi1,2∗ (张明义),LIU Xueying1 (刘雪颖), KUANG Zheng1 (匡政)   

  1. (1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China;2. Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Qingdao 266033, Shandong, China)
  • Received:2019-08-16 Online:2021-11-28 Published:2021-12-01

Abstract: Combined with fiber Bragg grating (FBG) sensing technology, four glass fiber reinforced polymer(GFRP) anti-floating anchors and four steel anti-floating anchors were tested for on-site destructive failure toinvestigate the anchoring performance and the bonding characteristics between GFRP anti-floating anchor andconcrete floor. The test results show that bending GFRP anchor will be broken at the common boundary betweenvertical anchorage section and bending section during the pullout process, and the spring-back load provided bythe rupture contributes to a decrease of bearing capacity and an inflection point on the load-slip curve. The loaddisplacementcurve of the straight anchor GFRP anti-floating anchor is smoother and has better predictabilitythan the same type of steel anchor. Additionally, different forms of GFRP anti-floating bolt have different bondslipconstitutive relations. By introducing the sliding-slip correction factor of bending bolt, constitutive modelsdescribing the rising-section of sliding-slip relation of bending and straight-anchored GFRP anti-floating bolt areestablished respectively. The model can fit the test results rightly.

Key words: glass fiber reinforced polymer (GFRP), anti-floating anchor bolt, axial force, bearing capacity, loadslip,constitutive relationship

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