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Integrated whole-fiber reinforced plastic rail traffic structure

A technology for reinforced plastics and rail transportation, applied in truss structures, tracks, roads, etc.

Inactive Publication Date: 2010-08-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior to this, people have not applied this material to rail transit

Method used

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  • Integrated whole-fiber reinforced plastic rail traffic structure
  • Integrated whole-fiber reinforced plastic rail traffic structure
  • Integrated whole-fiber reinforced plastic rail traffic structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: The integral full fiber reinforced plastic rail transit structure of the present invention comprises an integral load-bearing main girder 1 and prestressed tendons 5, and the prestressed tendons 5 are divided into internal and external tendons, and the integral load-bearing main girder 1 is made of glass fiber reinforced plastic (GFRP); the prestressed rib 5 is made of carbon fiber reinforced plastic (CFRP); One-time processing and forming; before forming, the prestressing tendon channel 6 is reserved inside the web 3, and the channel is a threaded channel; the integral load-bearing main beam 1 has a smooth transition surface 7 along the longitudinal direction near the support, so as to realize the cross-section of the support and the standard smooth transition of sections;

[0016] The steering device is a steering block. The steering block is on both sides of the integral load-bearing main girder. There are two pieces on each side. Prestressed tendon ben...

Embodiment 2

[0017] Embodiment 2: The difference from Embodiment 1 is that the steering device adopts steering ribs. The steering rib extends the upper end of the steering block and is fixedly connected with the top plate. There are prestressed tendon bend holes reserved on the steering rib and built-in bend pipes. In this embodiment, three steering ribs are arranged on both sides of the integral load-bearing main girder. The prestressed tendons are arranged in a four-fold line.

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Abstract

The invention relates to a railway traffic structure with whole complete fiber reinforced plastic, comprising integral load-bearing girder and prestressed tendon. Integral load-bearing girder comprises top plate, web plate and steering device and is made by glass fiber reinforced plastic. It is formed at one time and the pore tunnel for prestressed tendon is preset before forming. Top plated is connected with web plate. Prestressed tendon is made by carbon fiber reinforced plastic and is divided into internal and external tendons. Internal tendon is anchored after tensioned, which extends from two T-shape ends through pore tunnel for prestressed tendon, and external tendon is anchored after tensioned, which extends from two T-shape ends through steering device. Curved tendon is formed. The invention is provided with small section area, big whole rigidness, and light weight so on.

Description

technical field [0001] The invention relates to a rail transit structure, in particular to an integral full fiber reinforced plastic (FRP) rail transit structure. Background technique [0002] At present, urban transportation is developing in a diversified and three-dimensional direction. Rail transit has become an important means of transportation for people to travel. Therefore, light rail, quasi-high-speed passenger dedicated lines, and maglev have shown a trend of rapid development, and people's requirements for transportation tools are also increasing. Higher, and is developing towards a safer, more comfortable and high-speed direction. But so far, rail transit mostly adopts concrete structure, and the concrete material itself is heavy, has low tensile strength, poor crack resistance, large creep deformation, and prestressed steel bars are easy to corrode. It is very difficult to carry out technical improvements to achieve safety performance and high speed. Due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B25/00E04C3/28
Inventor 薛伟辰王巍
Owner TONGJI UNIV