Experimental Research on Pull-Out Performance of Grouted Anchor Rods with Bushings Inside Brick Masonry

JING Denghu; ZHU Qiyi; SHI Yun; WANG Fangyong

doi:10.3724/j.gyjzG23080905

Volume 54 Issue 4

Apr. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(4): 228-237

JING Denghu, ZHU Qiyi, SHI Yun, WANG Fangyong. Experimental Research on Pull-Out Performance of Grouted Anchor Rods with Bushings Inside Brick Masonry[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(4): 228-237. doi: 10.3724/j.gyjzG23080905

Citation:

JING Denghu, ZHU Qiyi, SHI Yun, WANG Fangyong. Experimental Research on Pull-Out Performance of Grouted Anchor Rods with Bushings Inside Brick Masonry[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(4): 228-237. doi: 10.3724/j.gyjzG23080905

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Experimental Research on Pull-Out Performance of Grouted Anchor Rods with Bushings Inside Brick Masonry

doi: 10.3724/j.gyjzG23080905

1. School of Civil Engineering, Southeast University, Nanjing 211189, China;
2. China Academy of Building Research, Beijing 100013, China;
3. Jiangsu Zhujiu Conservation Technology Co., Ltd., Nanjing 210019, China

Received Date: 2023-08-09
Available Online: 2024-05-29

Abstract

Abstract

The technique of grouted anchor rods with bushings is a new strengthening and repair technique that can be used for repairing mass brick masonry ancient buildings without damaging their appearance. In order to study the pull-out performance of grouted anchor rods inside historic masonry, pull-out tests on 21 anchor rods with the fullness of mortar joints, anchoring depth, drilling diameter and anchorage direction as research parameters were designed and completed, and the failure modes of anchor rods, pull-out force-slip curves, the distribution of anchor bar strains as well as interface bonding stresses and peak pull-out forces were analyzed. The test results showed that the pull-out force-slip curves of grouted anchor rods with bushings exhibited distinct four-stage characteristics; the anchor bars within the anchor rods showed resistance to yielding; the failure modes of anchor rods were directly affected by the fullness of mortar joints and the drilling diameter; the peak pull-out forces of anchor rods had a non-linear growth relation with the anchorage depth; the peak pull-out forces of anchor rods with high fullness of mortar joints and large drilling diameter were high; and compared with horizontal anchor rods, the peak pull-out forces of vertical anchor rods were significantly higher.
- grouted anchor rod with bushing,
- brick masonry,
- fullness of mortar joint,
- anchoring depth,
- drilling diameter,
- pull-out performance

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References(27)

References

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