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Fiber-reinforced resin anchoring rod

A fiber reinforced resin and reinforced resin technology, applied in the installation of bolts, sheet pile walls, mining equipment, etc., can solve the problems of stripping of reinforcing bars and rods, insufficient anchoring force, insufficient tensile strength, etc., and achieve convenient operation. Simple, effective in improving shear strength and reducing labor costs

Inactive Publication Date: 2007-03-28
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the current glass fiber reinforced resin anchors have defects such as insufficient tensile strength and insufficient anchoring force.
As mentioned in Chinese Patent No. 01231810.8, "Left-handed Threaded Fiberglass Anchor", a threaded reinforcing rib is set on the rod body to solve the problem that the anchoring force between the FRP bolt and the surrounding rock and soil is small (slightly smaller than the steel bar). , but in the pull-out test and actual engineering application, since the threaded reinforcement and the rod body are not a whole, it is easy to cause the reinforcement rib and the rod body to peel off, and the effect of improving the anchoring force of the FRP bolt cannot be achieved.

Method used

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  • Fiber-reinforced resin anchoring rod

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Embodiment Construction

[0012] The rod body of the anchor rod of the present invention is made of basalt fiber-reinforced resin, which is made through a certain process, and the bolt rod body 1 has a left-handed or right-handed thread structure, as shown in Figure 2, the thread is extruded in a one-time production process It is formed and is an integral part of the anchor rod body 1 . In the production process, after the rod body is preformed, the pressure wheel is used to rotate radially at the exit, thereby pressing to form a left-handed or right-handed thread structure.

[0013] In addition, before the production of basalt fiber reinforced resin, Kevlar 49 (poly-p-phenylene terephthalamide, produced by DuPont Company of the United States) with a mass ratio of 1% to 10% and a length of 2 to 6mm can be added to the raw material resin. ) short fibers, fully stirred evenly, and then produced by pultrusion according to the original production process. Due to the high tensile strength of Kevlar 49 (abo...

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Abstract

The invention discloses a fiber enhancing resin anchor pile that is made up from basalt fiber enhancing resin. Before making basalt fiber enhancing resin, polyparabenzene lumichrome acid radical poly para-phenylene diamine short fiber of 1-10wt% and 2-6mm length would be added into the raw material resin. The invention could improve tensile strength and compressive strength, and the temperature resistance and corrosion stability much better than that of glass reinforced plastics anchor pile.

Description

【Technical field】 [0001] The invention relates to building protection materials, in particular to fiber-reinforced resin anchor rods. 【Background technique】 [0002] Anchor bolts are generally used for engineering anchoring and support in various rocky areas. However, due to the shortcomings of steel anchor bolts such as non-corrosion resistance, high quality, complicated installation and difficult cutting, and easy generation of electric sparks during cutting, there have been gradually A tendency to be eliminated in some cases. [0003] In order to overcome the above shortcomings, glass fiber reinforced resin anchors, namely FRP anchors, have been developed at home and abroad. However, the current glass fiber reinforced resin anchor rods all have defects such as insufficient tensile strength and insufficient anchoring force. As mentioned in Chinese Patent No. 01231810.8, "Left-handed Threaded Fiberglass Anchor", a threaded reinforcing rib is set on the rod body to solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E21D20/00
Inventor 霍超汤惠工何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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