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Fiber reinforced plastic (FRP) pultruded profile for bridge, forming equipment and preparation method

A technology of pultrusion profiles and forming equipment, which is applied in bridge construction, bridges, bridge parts, etc., can solve problems such as prone to accidents and insufficient shear strength, so as to improve mechanical properties and weather resistance, improve surface effects, The effect of reducing spacing

Active Publication Date: 2013-04-10
北玻院(滕州)复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary FRP pultruded bridge decks are prone to sudden accidents due to their insufficient shear strength

Method used

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  • Fiber reinforced plastic (FRP) pultruded profile for bridge, forming equipment and preparation method
  • Fiber reinforced plastic (FRP) pultruded profile for bridge, forming equipment and preparation method

Examples

Experimental program
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preparation example Construction

[0047] The third technical solution of the present invention is to provide a preparation method for forming the FRP pultrusion profile for the bridge of the present invention using the FRP pultrusion molding machine for the above-mentioned bridge, including the following steps:

[0048] 1) Prepare the glue solution and place it in the above-mentioned glue solution impregnation device;

[0049] 2) Select the fiber pultrusion yarn and fiber fabric, and install them on the above-mentioned creel and the above-mentioned felt guide respectively;

[0050] After passing through the fiber pultruded yarn of the creel and the fiber fabric drawn out through the felt guide, the fiber material and the fiber fabric are jointly immersed in the dipping tank under the action of the above-mentioned traction device;

[0051] 3) After step 2), the fiber pultruded yarn and fiber fabric after impregnation pass through the preforming mold to remove excess resin and air bubbles, and then enter the cav...

example 1

[0063] The FRP pultruded profile for the bridge of the present invention is a cuboid, the length is determined according to the design of the bridge, the width is 220mm, and the height is 130mm. 10mm, the width of the top plate 1 and the bottom plate 4 is 220mm, the height of the side wall web 2 is 110mm, and the thickness is 10mm, the height of the middle web 3 is 90mm, and the thickness is 15mm, in the 2 side wall webs 2 to 2 middle webs The thickness of the top plate 1 and the bottom plate 4 on the outer side of 3 are both 10mm; the thickness of the top plate 1 and the bottom plate 4 between the two middle webs 3 are both 20mm; the top plate 1 and the bottom plate 4 are symmetrical along the horizontal center line of the profile, and the profile is three Cavity structure, the width of the middle cavity along the profile is 60mm, the height along the profile is 90mm, the cavity size on both sides is the same, the width along the profile is 55mm, the height along the profile i...

example 2

[0065] The FRP pultruded profile for bridges of the present invention is a cuboid, the length is determined according to the design of the bridge, the width is 235mm, and the height is 145mm. 14mm, the width of the top plate 1 and the bottom plate 4 is 235mm, the height of the side wall web 2 is 123mm, and the thickness is 11mm, the height of the middle web 3 is 103mm, and the thickness is 16mm, in the 2 side wall webs 2 to 2 middle webs The thickness of the top plate 1 and the bottom plate 4 on the outer side of 3 are both 11 mm; the thickness of the top plate 1 and the bottom plate 4 between the two middle webs 3 are both 21 mm; the top plate 1 and the bottom plate 4 are symmetrical along the horizontal center line of the profile, and the profile is three Cavity structure, the width of the middle cavity along the profile is 67mm, the height along the profile is 103mm, the cavity size on both sides is the same, the width along the profile is 57mm, and the height along the prof...

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Abstract

The invention relates to a fiber reinforced plastic (FRP) pultruded profile for a bridge, forming equipment and a preparation method. The FRP pultruded profile for the bridge has the characteristics that the pultruded profile has the width of 220 mm to 250 mm and the height of 130 mm to 160 mm; and the section is shaped like a three-cavity rectangular frame. The forming equipment has the characteristics that an inner cavity of a thermal forming die adopts a three-cavity structure with the same shape as that of the FRP pultruded profile with the section shaped like the three-cavity rectangular frame; the forming equipment comprises a die core bracket, a die outer cavity and three die cores; and a die core heating device is inserted into a cavity of the die core. The preparation method comprises the following steps: preparing glue solution; selecting a fiber pultrusion yarn and fiber fabric and gumming; entering the thermal forming die through a pre-forming die, heating and solidifying; performing fixed-scale cutting; and forming the FRP pultruded profile for the bridge, wherein the section of the FRP pultruded profile is shaped like the three-cavity rectangular frame. The FRP pultruded profile for the bridge has light self-weight which is 20 to 40 percent of a concrete board, is high in bearing capacity, convenient in construction, quick in mounting, high in shearing strength and high in weather resistance, solves the problem that the common FRP bridge deck slab is damaged before bending damage, avoids sudden accidents and is favorable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of large-section pultrusion profiles for bridges, and in particular relates to an FRP pultrusion profile for bridges, forming equipment and a preparation method. Background technique [0002] In recent years, due to the characteristics of light weight and high strength, FRP (fiber reinforced composite material) has shown broad application prospects in bridge engineering. The study of new corrosion-resistant structural materials (fiber-reinforced composite materials) has extremely important theoretical and practical significance for reducing steel corrosion and economic costs of concrete structures. With the rapid development of the types and production processes of fiber reinforced composite materials, the product forms are constantly updated, making the application of FRP materials and structures in bridge engineering more diverse, such as FRP pedestrian bridges, FRP cable-stayed bridge cables, and FRP pres...

Claims

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Application Information

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IPC IPC(8): E01D19/00B29C70/52B29C70/54C08L101/02C08L63/00
Inventor 毛雅赛覃兆平张为军丁庆强张林韬
Owner 北玻院(滕州)复合材料有限公司
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