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Pressure-type carbon fiber prestressing force anchor cable land-sliding control structure

A prestressed anchor cable, carbon fiber technology, applied in the direction of foundation structure engineering, sheet pile wall, excavation, etc., can solve the problems of high installation strength, poor durability, low specific strength, etc., and achieve easy transportation, reduced transportation, and light weight. Effect

Inactive Publication Date: 2010-01-13
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0011] The invention aims to solve the shortcomings of traditional prestressed steel strands such as easy corrosion, poor durability, low specific strength, high strength in on-site transportation, production, and installation, and proposes to use carbon fiber materials instead of traditional steel strands to form a new type of carbon fiber prestressed steel strand. Stressed anchor cable landslide prevention and control structure, the new structure can effectively avoid the defects of ordinary steel strand prestressed anchor cables, making the landslide prestressed anchorage engineering structure safer, more reliable and durable

Method used

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  • Pressure-type carbon fiber prestressing force anchor cable land-sliding control structure
  • Pressure-type carbon fiber prestressing force anchor cable land-sliding control structure

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Embodiment

[0023] Example: For a specific landslide prevention and control project, through investigation and design work, it is determined that the pressure-type carbon fiber prestressed anchor cable structure is used for prevention and control. According to the design document, first use measuring equipment to measure and locate the prestressed anchor cable hole position; Drill holes according to the diameter and depth of a single anchor cable. At the same time, the pressure-type carbon fiber anchor cable is processed and made indoors. Since the carbon fiber anchor cable is unbonded, it is necessary to wrap the PVC casing outside the carbon fiber bundle. Set bearing steel plate at the end; clear holes and install pre-stressed anchor cable; inject M30 cement mortar; cast-in-place pre-stressed anchor cable anchor pier; when the strength of concrete and mortar reaches 70% of the design strength, perform pre-stress tensioning and lock ; Finally, seal the anchor head of the prestressed anchor...

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Abstract

The invention relates to a pressure-type carbon fiber prestressing force anchor cable land-sliding control structure, comprising an anchor cable which is composed of carbon fiber bundles with more than 3500Mpa of tensile strength, and a polrvinyl chloride sleeve is wrapped at the outer side of the carbon fiber bundles, cement mortar is poured at the outer side of the polrvinyl chloride sleeve, an anchor cable bore is arranged at the outer side of the cement mortar, and a bearing steel plate is arranged at the end part of the carbon fiber bundles. The structure has the characteristics of light weight, high tensile strength, corrosion resistance and long service life.

Description

Technical field [0001] The invention relates to a prestressed anchor cable structure applied to landslide prevention in geotechnical engineering, in particular to a new type of prestressed anchorage structure for landslide prevention and control using carbon fiber anchor cables. Background technique [0002] Prestressed anchor cable is a new type of landslide prevention and control structure. It was first applied in mines, and then gradually applied in various projects such as reservoir dam reinforcement, underground cavern reinforcement, slope reinforcement, landslide prevention, etc., becoming an important landslide prevention Measures. Because this kind of project is a permanent project, the steel anchor cable in traditional construction not only has large unit volume mass, inconvenient transportation, difficult to unwind, slow installation speed, but also has shortcomings such as easy rust. Although now it uses cement paste stone layer protection, plating Metal protection su...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D5/74
Inventor 何思明罗渝
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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