Grouting type expansion anchor rod and anchoring method

The invention provides a grouting type expansion anchor rod and an anchoring method, and belongs to the field of slope supporting and foundation pit supporting, the grouting type expansion anchor rod comprises a hollow grouting rod body, an external expansion device, a pressure applying rod, an annu...

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Bibliographic Details
Main Authors WANG YONGZENG, CAO YANG, GU CHUANBAO, WU ENZE, DAI JUNJIE, WANG RUN, FENG DIANZHI
Format Patent
LanguageChinese
English
Published 10.01.2023
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The invention provides a grouting type expansion anchor rod and an anchoring method, and belongs to the field of slope supporting and foundation pit supporting, the grouting type expansion anchor rod comprises a hollow grouting rod body, an external expansion device, a pressure applying rod, an annular sliding block and an extension structure, one end of the hollow grouting rod body is coaxially connected with a slurry blocking plug, and a plurality of slurry discharging holes are formed in the side portion of the hollow grouting rod body; the multiple external expansion devices are installed on the outer side of the hollow grouting rod body and cover the slurry discharging holes correspondingly. The external expansion device comprises steel arches, rotating hinges and inhaul cables, the rotating hinges are connected with the free ends of the adjacent steel arches, one ends of the inhaul cables are welded to the outer side of the hollow grouting rod body, and the other ends of the inhaul cables are connected
Bibliography:Application Number: CN202211330702