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Method for applying pre-stress to fiber sheet by using multiple parallel rods

A fiber sheet, prestressing technology, applied in the processing of building materials, building maintenance, bridge maintenance, etc., can solve the problems of unsatisfactory size and anchoring effect, improve the utilization efficiency and scope of application, overcome the vulnerability The effect of force peeling and saving of expensive materials

Inactive Publication Date: 2011-10-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention is technically innovative to a certain extent, but it is not ideal in terms of volume size and anchoring effect.

Method used

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  • Method for applying pre-stress to fiber sheet by using multiple parallel rods
  • Method for applying pre-stress to fiber sheet by using multiple parallel rods
  • Method for applying pre-stress to fiber sheet by using multiple parallel rods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Figure 4 , Figure 5 1 Example of Prestressing a Parallel Rod Anchor Using Flexible Sheet Material: Using Figure 5 (a) The anchorage part shown in (a) can be completed Figure 4 The shown fiber sheet is self-locked around the pole and continues to be around, and then installed on the structural member, Figure 5 In (a), the joint-shaped rod with holes and the rod passing through the component are used; the joint-shaped hole-shaped rod and the rod passing through the component are still used. Figure 5 (b) The anchorage part shown in (3 of which has been connected as a whole through the side plate) is preliminarily installed on the structural member; then apply pressure with the aid of jacks and other equipment, or slowly tighten the end of the joint-shaped rod with holes Nuts, the anchored sheet is pushed into the part of the outer section of the rod between the rods through the embedding strip, and the sheet will gradually obtain prestress; the embedding strip tha...

Embodiment 2

[0038] Image 6 An example of the combination of flexible sheet material parallel rod anchors and independent rods: Prepare 1 independent rod and flexible sheet material parallel rod anchors (the number of rods in the anchorage in this figure is 2 root, the parallel piece that connects two parallel rods together is a strip sheet) and a rod-shaped insert; a group of movable joint-shaped rods with holes are pre-pierced on the independent rods, and the joint-shaped rods with holes Scattered arrangement, the clear distance between adjacent joint-like rods with holes is not less than the width of the sheet; the sheet is wound around an independent rod and an adjacent rod in the anchorage to form a knotted After encircling, continue to surround the common periphery of the encircling envelop and another rod in the anchorage; pass the joint-shaped perforated rod through the pre-prepared through hole on the structural member and then tighten the nut for anchoring. At this time, the sur...

Embodiment 3

[0040] Parallel bar anchors using flexible sheet material (e.g. Image 6 The anchorage composed of 2, 3, and 4 in the anchorage), in which the number of rods in the anchorage is 2, and the sheet material wraps around the 2 rods in the anchorage to form a ring with a knot, and then the winding can be stopped ( figure 2 ), or continue to circle around (e.g. image 3 ), after installing and anchoring the sheets that have been self-locked around the rods and wound as above together with the anchors on the structural members, the embedding strips (or blocks) can be inserted between the two rods and anchored. Although a piece of sheet material passes between the two rods, it does not prevent the stretching of the sheet material to generate prestress by embedding.

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PUM

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Abstract

The invention discloses a method for applying pre-stress to a fiber sheet by using multiple parallel rods. The method is characterized by comprising the following steps of: winding the sheet on two rod pieces to form an annular bag with winding knots; when more than two rod pieces are provided, winding the common periphery of the annular bag and the remaining rod pieces; performing self-locking on the rod pieces and arranging and anchoring a wound sheet on a structural member together with multiple parallel rod pieces; projecting or pressing the anchored sheet between the rod pieces on partial peripheral section of the rod pieces through a wedge pressure bar and applying pre-stress to the sheet; and anchoring the wedge pressure bar to keep the pre-stress. The method for applying pre-stress to the fiber sheet by using multiple parallel rods is easy to implement and has reliable effect.

Description

technical field [0001] The invention relates to tensioning and anchoring of flexible sheet materials, in particular to a method for applying prestress to fiber sheets by using parallel multi-rods. technical background [0002] Due to various reasons, a large number of civil engineering structures such as houses and bridges need to be reinforced and repaired. Of course, the adoption of simple and efficient structural reinforcement technology has huge economic value and social benefits. Therefore, relevant exploration has long been valued by the international civil engineering community. [0003] As the third generation of modern structural materials after steel and concrete, sheet-like fiber-reinforced composite materials (referred to as fiber sheets) represented by high-performance carbon fiber cloth have the characteristics of light weight, high strength, corrosion resistance, and easy operation. When used for structural reinforcement, it basically does not increase the w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G21/12E04G23/02E01D22/00
Inventor 周朝阳周奥利周欣涛
Owner CENT SOUTH UNIV
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