Detachable anchor rod for foundation pit supporting

Abstract

The invention discloses a detachable anchor rod for foundation pit supporting. The detachable anchor rod for foundation pit supporting comprises an anchor rod hole, an anchor rod body is arranged in the anchor rod hole, a bearing body is arranged at the bottom end of the anchor rod body, an anchor head is arranged at the other end of the anchor rod body, the anchor head and the anchor rod hole are mutually embedded, insertion holes are formed in the side faces of the bearing body, and a pull rod is arranged in the insertion holes. The insertion hole is formed in the side face of the bearing body, and the pull rod penetrates through one insertion hole and extends out of the inserting hole in the other side, so that the pull rod forms a U-shaped structure at the bottom of the bearing body and extends to the anchor head outside an anchor hole to be fixed; when the anchor rod body loses the action significance, anchoring of the anchor head to the pull rod is released, and pulling force is applied to one end; and due to the fact that the pull rod and a grouting body are not bonded and the pull rod has certain flexibility, the pull rod can be pulled out through the arc-shaped bearing body, dismantling of a pull rod material of the anchor rod body is achieved, and hidden dangers are eliminated for follow-up engineering construction.

Description

technical field [0001] The invention relates to the technical field of anchor rods, and more specifically relates to a detachable anchor rod for foundation pit support. Background technique [0002] With the continuous development of urban construction in our country, a large number of high-rise buildings continue to emerge, and the number of deep foundation pit projects continues to increase. Most of the foundation pit supports are pile-anchor support structures. After the construction of the main structure is completed, these temporary support structures will not Play a role again, but these supporting structures are permanently buried in the ground and cannot be taken out, which leads to construction difficulties of underground structures such as adjacent follow-up buildings or municipal works, and causes waste of materials. Prestressed anchor cable support is an important support method for building foundation pits, and its application is very common. However, because th...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a detachable anchor rod for foundation pit support, which solves the following problems in the existing anchor rod body in the prior art: 1. It is difficult to remove, if you want to remove the anchor rod body as a whole Pulling out, the applied pulling force must be greater than the frictional resistance produced by the soil on the anchor body, and the pull-out force may be twice or several times the design pulling force of the anchor body, which increases the difficulty of pulling out; 2. It has a greater impact on surrounding buildings , the tension applied during the overall pulling out of the bolt body is transmitted to the soil to cause new deformations in the foundation pit, and even a new sliding surface, resulting in the hidden danger of landslide accidents in the foundation pit

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