Anchorage cable anchoring construction method

An anchor cable and construction method technology, applied in the field of anchor cable anchoring construction method, can solve the problems of reduced safety, inconvenient installation, complicated process, etc.

Inactive Publication Date: 2008-11-19
孙玥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing geometrically dispersed anchor cable structure is inconvenient to install, the process is complicated, and the cost is wasted. The more important defect is that the different lengths of the steel strands at all levels lead to poor working conditions of the anchor cables and reduce the safety.

Method used

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  • Anchorage cable anchoring construction method
  • Anchorage cable anchoring construction method
  • Anchorage cable anchoring construction method

Examples

Experimental program
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Embodiment Construction

[0015] The bottom end of the unbonded steel strand 3 is equipped with a shear cylinder 2 made of steel, and the front end of the shear cylinder 2 is equipped with a bearing plate 1; when the anchor cable is drilled, the anchor cable structure is used in hard rock. Cylindrical drilling is used, bottom enlarged head drilling is used when used in soft rock or soil, and self-drilling drill bit and pressure shear barrel are combined when used in the stratum that is easy to collapse.

[0016] Figure 1: Before the construction of the anchor cable, drill 4 first, install a steel shearing cylinder 2 at the bottom end of the unbonded steel strand 3, and then install the bearing plate 1 at the front end of the steel shearing cylinder 2 to complete the installation The anchor cable of the shear cylinder is placed in the bore 4.

[0017] Figure 2: Before the construction of the anchor cable, drill 4 first. After drilling 4 is completed, the bottom of the hole is reamed to form an enlarged head...

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Abstract

The invention relates to a process for fixing anchor line. The process is characterized in that the bottom end of an unbonded steel stranded wire is provided with a steel shearing barrel, the front end of which is provided with a bearing plate; when the anchor line is drilled, the anchor line structure adopts a cylindrical drill bit for hard rocks, a bottom enlarged end drill bit for soft rocks or soils and the combination of a self-boring drill bit and the shearing barrel for the stratum with easy hole collapse. The process has the advantages of simple and convenient mounting process and effective cost control, and improves the degree of safety of the operation condition of the anchor line.

Description

Technical field [0001] The invention relates to an anchor cable anchoring method. Background technique [0002] At present, pressure-dispersed anchor cables are used for large-tonnage anchor cables. The existing pressure dispersive anchor cable uses multiple anchor heads to disperse the pressure (geometric dispersion), and the anchor solid uses cement mortar. Multiple anchor heads are placed at different positions in the borehole (the existing specification stipulates that the anchor head spacing is 2-3m). The purpose of using multiple anchor heads is to disperse the sidewall shear stress of the anchor solid and the axial compressive stress of the anchor solid. [0003] The existing geometrically dispersed anchor cable structure is inconvenient to install, the process is complicated, and the cost is wasteful. The more important defect is that the different lengths of the steel strands at all levels lead to poor working conditions of the anchor cables and lower safety. Summary of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/14E02D5/74E21D20/00
Inventor 孙玥
Owner 孙玥
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