A Construction Method for Improving the Pullout Performance of Threaded Reinforcement Anchor

A technology of threaded steel bars and construction methods, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of labor and time, waste of resources, etc., and achieve the effects of preventing displacement, speeding up construction progress, and reducing construction costs.

Active Publication Date: 2022-05-10
中铁十七局集团第五工程有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a construction method for improving the pull-out performance of threaded steel anchors in order to solve the problem that the length of the anchorage section exceeds the actual requirement when the existing construction method of threaded steel anchors is used, resulting in waste of resources, labor and time.

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  • A Construction Method for Improving the Pullout Performance of Threaded Reinforcement Anchor
  • A Construction Method for Improving the Pullout Performance of Threaded Reinforcement Anchor

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Embodiment Construction

[0024] A construction method for improving the pullout resistance of a threaded steel bar anchor, the method comprising the following steps:

[0025] S1: A number of vertical rib-column grooves are vertically opened on the surrounding rock wall, and the rock mass in each vertical rib-column groove is eliminated;

[0026] S2: Drill several bolt holes on the bottom wall of each vertical rib column slot, and clean up each bolt hole;

[0027] S3: Install several anti-pull resistance blocks on the anchoring section of each threaded steel anchor; the installation process is realized by the following steps: a. Screw the sleeve on the anchoring section of the threaded steel anchor; the sleeve The barrel includes a straight barrel located at the head and a conical barrel integrated end-to-end with the straight barrel, and the diameter of the head end of the conical barrel is smaller than the diameter of the rear end; b. Install the sleeve on the sleeve with the opening facing down and ...

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Abstract

Specifically, the invention is a construction method for improving the pullout resistance of threaded steel anchors, which solves the problem that the length of the anchoring section exceeds the actual requirement when the existing construction method for threaded steel anchors is applied, resulting in waste of resources, labor and time. A construction method for improving the pullout resistance of threaded steel bar bolts, the method comprising the following steps: S1: vertically opening several vertical rib column grooves on the surrounding rock wall; Drill several anchor holes; S3: install several pullout resistance blocks on the anchoring section of each threaded steel anchor; S4: put the threaded steel anchor into the anchor hole, and pour cement mortar into the anchor hole ; S5: Bind the steel bars of the vertical rib column and the panel, set up the formwork, and pour the concrete; S6: Seal the end of the threaded steel bar anchor on the outside of the panel. The invention reduces the construction cost and speeds up the construction progress, is applicable to the high slope stability protection project of stonework excavation, and can also be popularized and applied in similar projects.

Description

technical field [0001] The invention relates to a construction method for the stability protection engineering of stone excavation high side slopes, in particular to a construction method for improving the pull-out resistance of threaded steel bar anchors. Background technique [0002] With the expansion of construction scale and the advancement of civil engineering technology, foundation pits are deepening and steep slopes are increasing. Walls are one of them. At present, since the anchorage pull-out resistance of threaded steel bars is significantly higher than that of ordinary round steel bars, and the deformation of threaded steel bars is smaller than that of steel wire ropes after being pulled and is more economical, hot-rolled threaded steel bars are generally used directly as anchor rods in bolt retaining wall projects. s material. The threaded steel bolt is divided into two parts: the anchoring section and the tension transmission section. The anchoring section is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D17/20
CPCE02D5/74E02D17/20
Inventor 杨思琪孙义佳邹华徐彦军董琪
Owner 中铁十七局集团第五工程有限公司
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