Recoverable anchor rod and construction method thereof

Abstract

The invention discloses a recoverable anchor rod. The recoverable anchor rod comprises a cement soil pile body and an anchor cable. The anchor cable comprises branch anchor cables. Each branch anchorcable comprises a glass fiber anchor bar, screw-thread steel and a steel strand, wherein the glass fiber anchor bar, the screw-thread steel and the steel strand are sequentially connected, one end ofthe glass fiber anchor bar is connected to one end of the screw-thread steel through a sleeve, and the other end of the screw-thread steel is connected to one end of the steel strand through a wire rod connector. The sleeves are filled with a hot melting material, so that the glass fiber anchor bars and the screw-thread steel are pasted into the sleeves correspondingly. First electric heating pieces are buried into the hot melting materials and used for melting the hot melting material between the glass fiber anchor bars and the sleeves. Anchoring plates are connected to the anchor cable, theanchoring plates are provided with center holes and anchor cable holes around the center holes, and the anchoring plates sleeve the glass fiber anchor bars through the anchor cable holes. The anchoring plates are made of a non-metallic material. The invention further provides a construction method of the recoverable anchor rod. The number of metal parts left underground can be reduced, so that theinfluence on following construction is lowered.

Description

technical field [0001] The invention relates to a recoverable anchor rod and a construction method thereof. Background technique [0002] The supporting pile fulcrum of foundation pit support can be realized by internal support and anchor cable. The cost of internal support is high, which affects the construction of the main structure. The anchor cable has the advantages of low cost and fast construction, but the anchor cable needs to occupy a lot of underground space. The cable anchorage depth range exceeds the building red line, which brings the problem of violating the land use planning. [0003] In order to solve this problem, people have developed the recyclable anchor cable technology. After the anchor cable completes the task, the anchor cable can be recycled, which can not only avoid the problem that the anchor cable exceeds the building red line, but also reduce the construction cost. Currently, a variety of recoverable anchor cable technologies have been developed...

AI Technical Summary

Problems solved by technology

However, when recycling the anchor cables, there is a problem that some anchor pieces are left underground and cannot be recycled. These anchor pieces are generally made of metal materials and buried in the grouting body to preserve the stability of the anchor cable in the grouting body , these anchors are generally large anchor plates or rods, the length of the anchor plates is between 400-600mm, and the length of the rods is generally 2.0-2.5m

[0004] Due to the large volume of these metal anchors, if they are left underground, they will have a certain impact on subsequent construction

When the underground construction continues in this area, when the construction machinery hits these metal anchors, it will cause certain damage to the construction machinery, especially for cutting parts such as cutters or drill bits, which will cause irreparable damage, sometimes for To take out these metal anchors, manual excavation is required. First of all, these metal anchors are excluded, which seriously affects the construction efficiency of this area.

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