Assembly type expanded-base grouting anchoring structure device and assembly construction method

Abstract

The invention relates to an assembly type expanded-base grouting anchoring structure device. The assembly type expanded-base grouting anchoring structure device comprises one or more hollow tubes and foldable unfolded bag sleeves. According to the assembly type expanded-base grouting anchoring structure device disclosed by the invention, the assembly type expanded-base grouting anchoring structure device which can bear pulling and pressing bidirectional loads as well as the assembly technology and construction method of the assembly type expanded-base grouting anchoring structure device are provided, bottom diameter expansion is performed in small-diameter pile holes or small-diameter anchor holes through a hole expansion technology, anchor rod piles or anchor rods, with expanded-base structures are generated, the carrying capacity of the expanded-base anchor rod piles or the expanded-base anchor rods can be increased in multiples, and besides, the expanded-base anchor rod piles or the expanded-base anchor rods are also suitable for bearing bidirectional loads of pressure and pulling force. According to the assembly type expanded-base grouting anchoring structure device disclosed by the invention, stress rod bodies are made from high-performance fiber reinforcement compound materials or steel products, and a hollow tube application technology is adopted, so that the stress rod bodies concurrently have grouting and carrying functions, the construction periods are shortened, materials are saved, the building cost is reduced, and besides, the construction is convenient and fast.

Description

technical field [0001] The invention relates to the field of pile foundation technology and rock-soil anchoring technology of civil construction engineering, in particular to an assembled bottom expansion grouting anchoring structure device and an assembly construction method. Background technique [0002] In the field of modern geotechnical engineering, small-diameter anchor piles and anchor rods are widely used in various complex rock and soil strata because of their convenient, fast and low price, and are increasingly used in pile foundation engineering and geotechnical engineering. Anchoring engineering field. It has become an important technical means for the deep foundation of new projects, the reinforcement and reinforcement of the foundation of existing buildings, the anti-overturning of high-rise buildings, the anti-floating structure of buildings, and the buildings that bear alternating loads of tension and compression. Due to the small diameter of traditional anc...

AI Technical Summary

Problems solved by technology

Due to the small diameter of traditional anchor piles and anchor rods, usually Φ150-Φ250, their bearing capacity is greatly limited under complex geological conditions or under high seepage pressure

During engineering construction, cement-based grout is easily lost after hydraulic filling, and its seepage and diffusion path and range cannot be controlled, and the engineering quality of anchor piles and anchors is difficult to guarantee

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