Modified clamping piece type anchorage device

Abstract

The invention discloses a modified clamping piece type anchorage device which comprises an anchor ring assembly, a clamping piece assembly, a jacket and an isolation sleeve tube, wherein an anchor eye is formed in the anchor ring assembly, an expansion portion is arranged in the anchor eye, the jacket is arranged in the anchor eye, when the clamping piece assembly is inserted into the anchor eye, the jacket is clamped in the anchor eye through the anchor ring assembly and the clamping piece assembly, the isolation sleeve tube is arranged at the end portion of the anchor ring assembly, an electric heating device is arranged on the jacket, and the jacket is made from fusible materials. The modified clamping piece type anchorage device can bear the drawing force of 28 tons in the process of support of a foundation pit and a slope and can fully meet existing support requirements. In addition, when the modified clamping piece type anchorage device is needed to be recycled, the electric heating device can be powered on through a line and heat, the jacket can be softened or melted, friction resistance between core materials and the clamping piece assembly can be reduced, and therefore the purpose of convenient recovery of the core materials is achieved. The modified clamping piece type anchorage device is simple in scheme, practical, simple in recovery method of the core materials and convenient to operate.

Description

technical field [0001] The invention relates to an improved clip-type anchorage which can realize large-tonnage drawing and facilitate the recovery of core materials, which is applied in foundation pit and side slope support of geotechnical engineering. Background technique [0002] With the advancement of urbanization, the construction of underground facilities such as underground parking lots, underground pedestrian passages, underground commercial streets, and underground railways requires foundation pit and slope support. [0003] In the prior art, cast-in-situ piles, anchor rods and soil nails are widely used in geotechnical engineering. The core material of the main force-bearing components is steel, such as steel bars, steel pipes, steel strands, and steel wire ropes. The pits and slopes have achieved very good results, but the steel materials usually used are one-time use, and the core materials are left in the soil layer after use, which not only wastes materials, b...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, cast-in-situ piles, anchor rods and soil nails are widely used in geotechnical engineering, and the core material raw materials of the main force-bearing components are all steel materials, such as steel bars, steel pipes, steel strands, and steel wire ropes, which are used to reinforce foundations. The pits and slopes have achieved very good results, but the steel materials used are usually used for one-time use, and the core materials are left in the soil layer after use, which not only wastes materials, but also forms obstacles to the construction of adjacent buildings

For example, the length of the commonly used anchor rods basically reaches 20-30 meters, and the soil nails reach 8-15 meters. It is difficult to recycle them according to the existing technology.

In quite a few engineering examples, special construction measures have to be taken in the subsequent construction of adjacent buildings due to the impact of anchor rods and soil nails, which greatly increases the difficulty and cost of dealing with underground obstacles during development.

Images