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Wooden sandwich laminated composite sleeper and construction method

A composite material and sandwich technology, applied in ballast layers, roads, tracks, etc., can solve the problems of poor corrosion resistance, short life and poor shock absorption effect of wooden sleepers, and achieve easy maintenance, long service life, and easy construction. Effect

Inactive Publication Date: 2015-04-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wood sandwich laminated composite material sleeper and its construction method in order to overcome the disadvantages of wooden sleepers such as non-corrosion resistance and short service life and the disadvantages of reinforced concrete sleepers such as heavy weight, high brittleness and poor shock absorption effect

Method used

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  • Wooden sandwich laminated composite sleeper and construction method
  • Wooden sandwich laminated composite sleeper and construction method
  • Wooden sandwich laminated composite sleeper and construction method

Examples

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Embodiment 1

[0029] The invention is a wood sandwich laminated composite material sleeper, which is 2500mm in length, 220mm in width and 160mm in thickness according to common sleeper specifications. The number of wooden strips 1 used is 5, and the wooden strips are respectively wrapped with glass fiber cloth 2 with a thickness of 1 mm, and the number of wrapped fiber cloth 2 is 2 layers. Then stack them horizontally, and wrap them with 3 layers of glass fiber cloth 2 after stacking. Excluding the thickness of the fiber cloth 2, the length of the wooden strip 1 used above is 2490mm, the width is 38.8mm, and the thickness is 150mm. Put the wrapped whole piece of wood into the pre-prepared mold, lay the release cloth, introduce the resin 3, use the negative pressure generated by the vacuum pump to suck the resin 3 from the container, and fill the upper and lower layers and the wood through the feeding hole. Between strips 1 of fiberglass cloth, cure to shape. After a period of time, demoul...

Embodiment 2

[0031] The invention is a wood sandwich laminated composite material sleeper, which is 2500mm in length, 220mm in width and 160mm in thickness according to common sleeper specifications. The number of wooden strips 1 used is 5, and the wooden strips 1 are respectively wrapped with glass fiber cloth 2 with a thickness of 1 mm. The number of layers of wrapped fiber cloth 2 is 1 layer. Then stack them horizontally, and wrap them with two layers of glass fiber cloth 2 after stacking. Excluding the thickness of the fiber cloth 2, the length of the wooden strip 1 used above is 2494mm, the width is 214mm, and the thickness is 26.8mm. Put the wrapped whole piece of wood into the pre-prepared mold, lay the release cloth, introduce the resin 3, use the negative pressure generated by the vacuum pump to suck the resin 3 from the container, and fill the upper and lower layers and the wood through the feeding hole. Between strips 1 of fiberglass cloth, cure to shape. After a period of tim...

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Abstract

The invention discloses a wooden sandwich laminated composite sleeper and a construction method. The wooden sandwich laminated composite sleeper comprises multiple battens, pieces of fiber cloth and resin, wherein each batten is wrapped in the corresponding piece of fiber cloth, the multiple battens wrapped in the fiber cloth are stacked together to form a stacked unit, the stacked unit is also wrapped in fiber cloth, so that the composite sleeper is formed, the resin is dispersed all over the surface layer of each batten and the fiber cloth, and then forming is achieved through curing. The wooden sandwich laminated composite sleeper is convenient to construct, long in service life, easy to maintain and capable of meeting the requirement for building increasingly-developed high-speed railways, intercity high-speed subways, city subways and light rails; by the adoption of the structure, the sleeper not only can serve as an ordinary sleeper but also can serve as a beam or a plate or a column.

Description

technical field [0001] The invention relates to a new composite material sleeper technology, in particular to a wooden sandwich laminated composite material sleeper and a construction method. Background technique [0002] my country is a Shaolin country, and the timber resources are seriously insufficient. The contradiction between timber supply and demand has been sharp for a long time, and it cannot meet the market demand. The age of trees required for the production of sleepers is generally 80-100 years old, but the stock of standing trees of this age in our country is very little. In addition, wood is an organic substance, which is easy to decay and deteriorate due to insect and fungus erosion, so the service life of wooden sleepers is short. After anti-corrosion treatment, the rated service life is 13 to 19 years. 8 to 10 years. Concrete sleepers will not decay, and the raw materials are easy to obtain, long life, high stability, and low maintenance. However, with the...

Claims

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Application Information

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IPC IPC(8): E01B3/46
CPCE01B3/46
Inventor 方海吴中元刘伟庆祝露齐玉军
Owner NANJING UNIV OF TECH