Experimental Investigation for the Bonding and Anchoring Property of the Full-thread GFRP Anti-floating Anchor in Concrete Floor
BAI Xiaoyu1, KUANG Zheng1, ZHANG Mingyi1, WANG Yonghong1, LIU Junwei1, YAN Nan2
1 College of Civil Engineering, Qingdao University of Technology, Qingdao 266033 2 College of Environmental Science and Engineering, Qingdao University, Qingdao 266071
Abstract: In order to promote the use of the GFRP anchor in hydraulic structure such as hydropower station, pump house, sluice, and so on, we conducted an in-site full-scale pullout test for 12 full-thread GFRP anti-floating anchors and 10 thread steel anti-floating anchors and researched the anchorage properties of the GFRP anti-floating anchor in concrete floor. The test results show that the failure load value of the straight GFRP anchor, similar to that of the steel anchor, proves the feasibility of the GFRP anchor applying in the anti-floating project. Bending disposal, ho-wever, is not beneficial to improving the bearing capacity of the GFRP anchor. The longer the diameter and anchorage length of the GFRP anchor are, the higher the bearing capacity will be. Additionally, because the elasticity modulus is similar to both GFRP anchor and concrete, their coo-perative working effect is better than that of the steel anchor, which contributes to a linear rule for the load-slip curve of the GFRP anchor and be different with the two-broken-line load-slip curve of the steel anchor. The displacement of the GFRP anchor can be restricted effectively by the method of increasing the anchor diameter and anchorage length. We also deduced the basic anchorage length of the GFRP anchor, and the fai-lure mode accordance with the calculation result is same with the test phenomenon.
白晓宇, 匡政, 张明义, 王永洪, 刘俊伟, 闫楠. 全螺纹GFRP抗浮锚杆与混凝土底板黏结锚固性能的试验研究[J]. 材料导报, 2019, 33(18): 3035-3042.
BAI Xiaoyu, KUANG Zheng, ZHANG Mingyi, WANG Yonghong, LIU Junwei, YAN Nan. Experimental Investigation for the Bonding and Anchoring Property of the Full-thread GFRP Anti-floating Anchor in Concrete Floor. Materials Reports, 2019, 33(18): 3035-3042.
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2019, Vol. 33 
