CN214656018U - Reinforced sleeper - Google Patents

Abstract

The utility model discloses a reinforced sleeper, its technical scheme is: the sleeper comprises a sleeper body made of concrete, wherein a plurality of longitudinal ribs which are parallel to each other are arranged in the sleeper body; a plurality of stirrups are arranged on the outer sides of the longitudinal ribs along the length direction of the longitudinal ribs; wherein, the longitudinal bars and the stirrups are respectively FRP bars. The utility model discloses utilize FRP muscle or reinforcing bar reinforcing concrete, compound, wooden sleeper, solved that reinforced concrete sleeper reinforcing bar is perishable, the durability is poor, uninsulated problem, and compound sleeper and wooden sleeper intensity are low, the high problem of coefficient of thermal expansion.

Description

Reinforced sleeper

Technical Field

The utility model relates to a railway track structure field especially relates to a reinforced sleeper.

Background

Ties are a key component of railway track construction. Currently the most common are wood and concrete sleepers. In recent years, composite sleepers have begun to be used in actual engineering. The composite sleeper mainly takes composite materials such as polyurethane, plastics, rubber, resin and the like as raw materials. And waste plastics can be used, so that the landfill of the municipal plastic waste is reduced to a certain extent, and the living environment is improved.

Most of the composite sleepers developed so far have only synthetic matrix or only use chopped fiber for reinforcement, and the mechanical properties are similar to those of wood sleepers. The sleeper all has the following defects:

(1) the existing concrete sleeper is mainly reinforced by steel bars, and the steel bars are easy to corrode, have poor durability and are not insulated;

(2) the composite sleeper has low strength and high thermal expansion coefficient;

(3) the wood sleeper has low strength and high thermal expansion coefficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing a reinforced sleeper utilizes FRP muscle or reinforcing bar reinforcing concrete, compound, wooden sleeper, has solved that reinforced concrete sleeper reinforcing bar is perishable, the durability is poor, uninsulated problem, and compound sleeper and wooden sleeper intensity are low, the problem that coefficient of thermal expansion is high.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

in a first aspect, an embodiment of the present invention provides a reinforced sleeper, including a sleeper body made of concrete, wherein a plurality of longitudinal ribs parallel to each other are disposed inside the sleeper body; a plurality of stirrups are arranged on the outer sides of the longitudinal ribs along the length direction of the longitudinal ribs; wherein, the longitudinal bars and the stirrups are respectively FRP bars.

As a further implementation manner, the stirrups are arranged outside the longitudinal bars.

As a further implementation, the stirrup may also be a steel bar.

In a second aspect, the embodiment of the present invention further provides a reinforced sleeper, including the sleeper body made of composite material (containing or not containing short fiber), the sleeper body is provided with a plurality of longitudinal bars parallel to each other, and the longitudinal bars are FRP bars.

As a further implementation, the longitudinal bars extend through the sleeper body.

As a further implementation manner, the longitudinal bar may also be a steel bar.

The third aspect, the embodiment of the utility model provides a still provide a reinforced sleeper, including the sleeper body that timber was made, the inside muscle of indulging that is equipped with many parallels each other of sleeper body, it is the FRP muscle to indulge the muscle.

As a further implementation mode, the sleeper body is provided with a groove along the length direction of the sleeper body, and the longitudinal ribs are arranged in the groove.

As a further implementation manner, the grooves and the longitudinal ribs are filled with resin materials.

As a further implementation manner, the longitudinal bar may also be a steel bar.

Above-mentioned the utility model discloses an embodiment's beneficial effect as follows:

the utility model overcomes the defects of easy corrosion of the steel bar, strong vibration of the sleeper and large noise in the existing reinforced concrete sleeper, the FRP reinforced concrete sleeper can meet the requirement of strength and rigidity, and has the advantages of good durability, weak vibration, small noise, good insulativity and the like;

the utility model overcomes current compound sleeper, the problem that the intensity is low, coefficient of thermal expansion is high of wooden sleeper, FRP adds the muscle complex, wooden sleeper can add intensity, reduces coefficient of thermal expansion.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

FIG. 1 is a schematic illustration of a reinforced concrete sleeper structure according to one or more embodiments of the present invention;

fig. 2 is a schematic structural view of an FRP reinforcement cage according to one or more embodiments of the present invention;

fig. 3 is a schematic diagram of a reinforced composite sleeper structure according to one or more embodiments of the present invention;

fig. 4 is a schematic illustration of a reinforced wood sleeper structure according to one or more embodiments of the present invention;

the concrete is 1, the concrete is 2, the longitudinal bar is 3, the stirrup is 4, the composite material is 5, the longitudinal bar is 6, the wood is 7 and the longitudinal bar is.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" when appearing in this application are intended only to designate directions that are consistent with the up, down, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate description of the invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the application.

The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two elements may be connected directly or indirectly through an intermediate medium, or the two elements may be connected internally or in an interaction relationship, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

The first embodiment is as follows:

the present embodiment provides a reinforced sleeper, as shown in fig. 1 and 2, which includes a sleeper body made of concrete 1, and a plurality of longitudinal bars 2 parallel to each other are provided inside the sleeper body. And a plurality of stirrups 3 are arranged on the outer side of the longitudinal bar 2 along the length direction of the longitudinal bar.

The longitudinal ribs 2 are FRP ribs, and the stirrups 3 are FRP ribs. Fiber-reinforced polymer or Fiber-reinforced plastics (FRP) ribs are high-strength linear elastic materials composed of two materials, i.e., a continuous Fiber material and a matrix resin. According to the difference of fiber materials, the fiber materials can be classified into Glass fiber (Glass FRP, GFRP) ribs, Carbon fiber (Carbon FRP, CFRP) ribs, Aramid fiber (Aramid FRP, AFRP) ribs, Basalt fiber (Basalt FRP, BFRP) ribs, and the like.

According to different forms, the bar rib can be divided into bar ribs, bar rib bundles, stranded wires, ribbon ribs, sheet ribs, plate ribs, grid ribs and the like. This embodiment uses mainly bar ribs.

Compared with common reinforcing steel bars, the FRP bars have the advantages of high tensile strength, light dead weight, good corrosion resistance, good fatigue resistance, good electromagnetic insulation property and the like. The FRP ribs may be prestressed. During processing, firstly, the FRP rib cage is manufactured, and in this embodiment, the plurality of longitudinal ribs 2 and the stirrups 3 enclose the FRP rib cage in a rectangular frame shape.

Then placing the reinforced concrete sleeper into a template, and finally pouring concrete to form the reinforced concrete sleeper.

The steel bars in the existing reinforced concrete sleeper are easy to corrode, and the sleeper has strong vibration and large noise. The FRP reinforced concrete sleeper of the embodiment can meet the requirement of strength and rigidity, and has the advantages of good durability, weak vibration, low noise, good insulativity and the like.

Example two:

the embodiment provides a reinforced sleeper, as shown in fig. 3, which comprises a sleeper body made of a composite material 4 (with or without chopped fibers), wherein a plurality of longitudinal ribs 5 which are parallel to each other are arranged inside the sleeper body, and the longitudinal ribs 5 are FRP ribs.

Furthermore, the longitudinal bar can also be a steel bar.

The longitudinal ribs 5 penetrate through the sleeper body, and the number of the longitudinal ribs is determined according to the requirements of the sleeper on strength, rigidity and linear expansion coefficient. The manufacturing method can be coextrusion, namely coextrusion of the longitudinal ribs 5 and the composite material 4.

The existing composite sleeper has low strength and high thermal expansion coefficient. The FRP reinforced composite sleeper of the embodiment can increase the strength and reduce the thermal expansion coefficient.

Example three:

this embodiment still provides a reinforced sleeper, as shown in fig. 4, including the sleeper body that timber 6 made, sleeper body is inside to be equipped with many vertical muscle 7 that are parallel to each other, vertical muscle 7 is the FRP muscle.

Furthermore, the sleeper body is provided with a groove along the length direction, and the longitudinal rib 7 is arranged in the groove. In this embodiment, the recess is disposed adjacent a side of the tie body.

The longitudinal bars 7 can also be steel bars.

The manufacturing process comprises the following steps: firstly, manufacturing a wood sleeper, then carving a groove at a position where the longitudinal rib 7 needs to be added, placing the longitudinal rib 7 in the groove, and then packaging with resin or other materials.

The existing wood sleeper has low strength and high thermal expansion coefficient. The FRP reinforced wood sleeper of the embodiment can increase the strength and reduce the thermal expansion coefficient.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (5)

1. The utility model provides a reinforced sleeper, its characterized in that includes the sleeper body of being made by combined material, and sleeper body inside is equipped with many vertical muscle that are parallel to each other, it is the FRP muscle to indulge the muscle, it runs through the sleeper body to indulge the muscle, it extrudes jointly with combined material to indulge the muscle.

2. Reinforced sleeper according to claim 1, characterized in that said longitudinal bars can also be reinforcing bars.

3. The utility model provides a reinforced sleeper, its characterized in that includes the sleeper body that timber was made, the inside muscle of indulging that is equipped with many parallels each other of sleeper body, it is the FRP muscle to indulge the muscle, the recess is seted up along its length direction to the sleeper body, indulges the muscle and locates in the recess.

4. A reinforced sleeper as claimed in claim 3, wherein the recesses and the longitudinal bars are filled with a resin material.

5. Reinforced sleeper according to claim 3, characterized in that said longitudinal bars can also be reinforcing bars.

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