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 sudd

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
Comparison scheme
Effect test

Example Embodiment

[0047] The third technical solution of the present invention is to provide a method for forming the FRP pultrusion profile for bridges of the present invention by using the FRP pultrusion molding machine for bridges of the present invention, which includes the following steps:

[0048] 1) Prepare glue and place it in the above glue dipping device;

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

[0050] The fiber pultruded yarn passing through the creel and the fiber fabric drawn by the felt guide are immersed in the dipping tank together under the action of the above-mentioned traction device;

[0051] 3) After step 2) dipped fiber pultrusion yarn and fiber fabric pass through the pre-forming mold, remove excess resin and eliminate air bubbles, and then enter the cavity of the outer cavity of the mold together with the mold core in a layered arrangement Inside, it is heated and solidified in sec...

Example Embodiment

[0062] Example 1:

[0063] The FRP pultruded profile for the bridge of the present invention is a cuboid, the length is determined according to the bridge design, the width is 220mm, the height is 130mm, the top plate 1, the side wall web 2, the middle web 3, the bottom plate 4 and the mutual connection chamfer R is 10mm, the width of the top plate 1 and the bottom plate 4 is 220mm, the side wall web 2 is 110mm high and the thickness is 10mm, the middle web 3 is 90mm high and the thickness is 15mm, on the 2 side wall webs 2 to 2 middle webs The thickness of the top plate 1 and the bottom plate 4 on the outside of 3 is 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 middle cavity along the profile width is 60mm, along the profile height is 90 mm, the dimensions of the caviti...

Example Embodiment

[0064] Example 2:

[0065] The FRP pultrusion profile for the bridge of the present invention is a rectangular parallelepiped, the length is determined according to the bridge design, the width is 235mm, the height is 145mm, the top plate 1, the side wall web 2, the middle web 3, the bottom plate 4 and the mutual connection chamfer R is 14mm, the width of the top plate 1 and the bottom plate 4 is 235mm, the side wall web 2 is 123mm high, and the thickness is 11mm. The middle web 3 has a height of 103mm and a thickness of 16mm. On the 2 side wall webs, 2 to 2 middle webs The thickness of the top plate 1 and the bottom plate 4 on the outside of 3 is 11mm; the thickness of the top plate 1 and the bottom plate 4 between the two middle webs 3 are both 21mm; 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 middle cavity along the profile width is 67mm, along the profile height is 103 m...

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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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