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Sleeper synthesized by enhanced fiber

A technology for reinforcing fibers and sleepers, which is applied in the field of sleepers, can solve problems such as uneven durability, poor insulation performance, and lack of resources, and achieve the effects of easy molding, simple production, and safe operation

Inactive Publication Date: 2009-06-17
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to overcome the defects of low strength, uneven durability, short service life and lack of resources of the above-mentioned wooden sleepers, and the defects of poor insulation performance and high rigidity of the prestressed concrete sleepers, and provide a high-strength, high-elasticity, Reinforced fiber synthetic sleepers with good insulation performance, good anti-aging performance, and flexible fastener installation, its application will better solve the vibration impact and noise generated by special sections such as bridges, tunnels, turnouts, subways, and urban rails during train operation Pollution

Method used

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  • Sleeper synthesized by enhanced fiber
  • Sleeper synthesized by enhanced fiber
  • Sleeper synthesized by enhanced fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] like Figure 7 As shown, the reinforced fiber synthetic sleeper 1 proposed by the present invention is made of reinforced fibers 4, fiber mats or woven cloth 5 arranged through the splitter plate 6, then impregnated with resin 7, and continuously pulled by large-tonnage traction equipment 9 to enter the section 2 The model 8 is solidified and formed in the model 8 and pulled out, and is cut according to the required length by the cutting device 10 .

[0035] The reinforced fiber synthetic sleeper 1 proposed by the present invention is as figure 1 As shown, its section 2 is designed as figure 2 As shown, the three-box structure is adopted, and the corners are chamfered to reduce the stress concentration at the corners; the local thickness of the middle part of the upper and lower surfaces is increased, which is suitable for the installation of fasteners fixed by two anchor bolts, and the material consumption of the entire section is reduced; the middle of the section ...

Embodiment 2

[0037] like Figure 8 As shown, the reinforced fiber synthetic sleeper 11 proposed by the present invention is made of reinforced fibers 4, fiber mats or woven cloth 5 arranged through the splitter plate 12, then impregnated with resin 7, and continuously pulled by large-tonnage traction equipment 9 to enter the section 3 The model 13 is solidified and formed in the model 13 and pulled out, and is cut according to the required length by the cutting device 10 .

[0038] The reinforced fiber synthetic sleeper 11 proposed by the present invention is as Figure 4 As shown, its section 3 is designed as Figure 5 As shown, it adopts a double-box structure, and the chamfers around reduce the stress concentration at the corners; the thickness of the upper and lower surfaces is the same, which is suitable for the installation of fasteners fixed by 4 anchor bolts; the middle of the section is strengthened by the ribs formed during the production process to resist vertical loads capaci...

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Abstract

The invention relates to a reinforced fiber composite sleeper for supporting railway tracks. The reinforced fiber composite sleeper is one made from reinforced fiber materials, fiber felts or weaving cloth through resin impregnation, formed by the pultrusion of a forming die for designing the shape of the section and solidified in the forming die. The invention overcomes the defects of the known techniques, has ideal strength and elasticity and good insulating property compared with the common concrete sleeper and the anticorrosive wooden sleeper, and ensures the safe running of the trains. In addition, with the good elasticity, the reinforced fiber composite sleeper greatly enhances the whole elasticity of the track structure and reduces the influence on roadbeds from the vibration of the trains and the environmental pollution from the noise of the trains during running; with the good insulating property, the reinforced fiber composite sleeper has no influence on the track circuits so as to ensure the safe running of the trains. The invention has the advantages of simple manufacturing, easy forming and short production period, and is capable of realizing the mechanical and continuous production. Besides, the length of the reinforced fiber composite sleeper can be cut and processed according to the determined length requirements, and the waste sleepers can be treated and recycled easily.

Description

technical field [0001] The invention relates to a sleeper for supporting rails in railway lines, in particular to a reinforced fiber composite sleeper. Background technique [0002] The sleepers used in railway lines are mainly wooden sleepers and prestressed reinforced concrete sleepers at present. [0003] Known wooden sleeper is widely used on special sections such as bridges and turnouts because it has good elasticity, is easy to process, and is easy to use. However, due to the reason of material selection, the strength and durability of the wooden sleeper are not uniform enough, which will increase the dynamic effect of the wheel and rail, making the service life of the wooden sleeper short. There are many reasons for its failure, mainly decay, mechanical wear and cracking. In addition, high-quality wood resources are relatively scarce, and they are increasingly not meeting the requirements of environmental protection and ecological protection. [0004] The known pre...

Claims

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Application Information

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IPC IPC(8): E01B3/44B29C70/52
Inventor 冯毅杰凌烈鹏李家林张格明江成范佳暴学志潘振
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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