不同材质抗浮锚杆与基础底板的黏结强度试验研究

doi:10.11896/cldb.22050046

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Abstract Glass fiber reinforced polymer (GFRP) anchor has many advantages such as strong corrosion resistance, high tensile strength, poor conductivity and relatively low cost, so it has become a potential substitute for steel anchor in anti-floating engineering of underground structures. The ultimate pullout tests of GFRP and steel anti-floating anchors were carried out on the inverted foundation slab to clarify the bonding and anchoring characteristics between GFRP anti-floating anchor and foundation slab. The influence mechanism of anchor bar material, vertical ancho-rage length, bending radius, bending anchorage length and bond length on the bond strength between anti-floating anchor and foundation slab is revealed. The results show that: (1) GFRP anti-floating anchors and straight-anchored steel anti-floating anchors are prone to shear slip failure, and curved-anchored steel anchors are prone to anchor bar fracture failure. (2) Under the experimental conditions, the bond strength between the anti-floating anchor with a diameter of 28 mm and the base plate is between 1.23—7.79 MPa. (3) Bending anchorage length is the main factor affecting the bond strength between anti-floating anchor and foundation slab, and the effect on GFRP anti-floating anchor is the most significant. (4) Comparing the bond-slip curves of the two kinds of anti-floating anchors, there is an obvious inflection point in the bond-slip curve of the straight-anchored steel anchor, while the straight-anchored GFRP anchor is almost linearly rising.

Key words： GFRP anti-floating anchor foundation floor field test bond strength influencing factors

Published: 25 November 2023 Online: 2023-11-21

CLC number:

TU473

Fund:National Natural Science Foundation of China (51708316), the Key Project of Natural Science Foundation of Shandong Province (ZR2020KE009).

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	Articles by authors
	WANG Fengjiao
	BAI Xiaoyu
	ZHANG Yunguang
	JING Desheng
	ZHANG Mingyi
	WANG Haigang
	HOU Dongshuai

Cite this article:

WANG Fengjiao,BAI Xiaoyu,ZHANG Yunguang, et al. Experimental Study on Bond Strength of Foundation Slabs and Anti-floating Anchors with Different Materials[J]. Materials Reports, 2023, 37(22): 22050046-8.

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http://www.mater-rep.com/EN/10.11896/cldb.22050046 OR http://www.mater-rep.com/EN/Y2023/V37/I22/22050046

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