A method and device for increasing the pull-out force of a bolt

Abstract

The invention relates to a method and a device for increasing a drawing force of an anchor rod. The method is characterized in that an anchoring body is poured on the anchor rod, several sectioning grooves are chiseled on the anchoring body, the upper surfaces and two sides of the anchoring body and the sectioning grooves are covered by geogrids, the geogrids are fixed by pouring concrete on branch templates on the sectioning grooves, and the periphery of the anchoring body in the geogrids is filled with broken stones. The device is formed by combining the anchor rod, the anchoring body, the geogrids and the broken stones. According to the method and the device for increasing the drawing force of the anchor rod, disclosed by the invention, a sufficient drawing force is provided for the anchoring body by using the friction between the geogrids and the broken stones, the problem that the driving force which is able to be provided for a retaining wall by the anchor rod in a silt subgrade is insufficient can be helpfully solved, in addition, the anchor rod is processed by using the method, the height of the retaining wall can be appropriately increased, and the land is saved.

Description

technical field [0001] The invention relates to a method and a device for increasing the pulling force of an anchor rod, which belong to the field of civil engineering. Background technique [0002] With the development of my country's economy, the country's investment in infrastructure is increasing, and the projects under construction and planned projects of highways and high-speed railways are increasing, resulting in a continuous decrease in cultivated land and higher land prices. The more difficult it is, it becomes a difficult problem in the construction of highways and railways. Replacing slopes with walls is an effective method to save land acquisition area and earth filling volume. It is against this background that the anchor-stayed retaining wall was born. [0003] The anchor-stayed retaining wall evolved on the basis of the traditional retaining wall. In view of the fact that the traditional retaining wall is easy to overturn and fail under the action of active ea...

AI Technical Summary

Problems solved by technology

However, for some silt subgrades, due to the insufficient shear strength of the silt, the friction between the anchor rod and the soil cannot resist the extrusion of the active earth pressure on the retaining wall. When the soil moves to the retaining wall When , the anchor rod will slide relative to the soil, and due to the large amount of deformation, it will eventually lead to the destruction of the retaining wall

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