CN108951309A - A kind of rubber grain concrete sleeper - Google Patents

Abstract

The invention discloses a rubber particle concrete sleeper, which comprises a reinforced concrete sleeper, the reinforced concrete sleeper is laid on a ballasted track bed, and rubber particles are mixed in the reinforced concrete sleeper, and the rubber particles are not contained in the reinforced concrete sleeper. regular distribution. Through the micro-elasticity of the rubber particles of the present invention, the impact resistance and fatigue resistance of the reinforced concrete sleeper can be significantly improved, and the toughness is better, and the stress redistribution inside the reinforced concrete can be changed by using the rubber particles, and the volume of the reinforced concrete can be increased. Stability and prolong service life.

Description

A kind of rubber particle concrete sleeper

technical field

The invention relates to the technical field of rail transit, in particular to a rubber particle concrete sleeper.

Background technique

Concrete sleepers are concrete products used as railway sleepers. Cement, sand, stone, water and admixture are mixed in a certain proportion to form a mixture and injected into the combined model equipped with steel wire or steel bar and sleeper accessories, using vibration forming or loading vibration forming, steam curing, loosening steel wire or steel bar, Concrete sleeper products made by cutting the ends of sleepers, etc., have the advantages of high bearing capacity, strong stability, and good track smoothness.

However, existing common reinforced concrete sleepers have the following disadvantages:

(1) Ordinary reinforced concrete sleepers have high rigidity. In the railway line, during the interaction process of the wheel and rail, the impact energy transmitted to the concrete sleeper is high, which leads to the sleeper being prone to cracking, falling blocks and other damages, and the service life of the sleeper also decreased;

(2) The external load attenuation performance of ordinary reinforced concrete sleepers is poor, and the load generated by train operation is transmitted to the ballast after passing through the concrete sleeper, which leads to powdering and sinking of the ballast, resulting in the maintenance and repair workload of the ballast on site Increase;

(3) Ordinary concrete sleepers consume a lot of materials, have high carbon emissions, and are not environmentally friendly;

(4) Ordinary reinforced concrete sleepers are too thick, heavy, and costly; especially in urban rail transit, it is difficult to maintain large-scale machinery because the space is limited and large-scale machinery cannot be used, so the labor intensity is high.

Therefore, it is an urgent problem for those skilled in the art to provide a rubber particle concrete sleeper with good toughness and elasticity and light weight.

Contents of the invention

In view of this, the present invention provides a rubber particle concrete sleeper, which improves the toughness of the concrete, improves the impact resistance and fatigue resistance of the concrete sleeper, and at the same time increases the elasticity of the concrete while reducing the strength of the concrete sleeper. The impact damage of the load on the ballast can reduce the workload of railway maintenance and repair.

In order to achieve the above object, the present invention adopts the following technical solutions:

A rubber particle concrete sleeper, comprising a reinforced concrete sleeper, the reinforced concrete sleeper is laid on a ballast bed, and rubber particles are mixed in the reinforced concrete sleeper, and the rubber particles are placed in the Irregular distribution in reinforced concrete sleepers.

By taking the above scheme, the beneficial effects of the present invention are:

(1) Mixing rubber particles in reinforced concrete sleepers, rubber particles can improve the toughness of concrete, improve the impact resistance and fatigue resistance of reinforced concrete sleepers, and have good toughness;

(2) Mixing rubber particles in the reinforced concrete sleeper can increase the elasticity of the reinforced concrete and reduce the impact damage of the ballast caused by the train load, which can reduce the workload of railway maintenance and repair under the condition that the strength is not greatly reduced.

(3) The reinforced concrete sleeper mixed with rubber particles has a lighter weight, which is convenient for on-site laying and maintenance work.

Further, the length of the rubber particle concrete sleeper is 2.5m-3.0m.

The beneficial technical effect of adopting the above technical solution is that, through the design of the length of the rubber particle concrete sleeper, the requirements of the lines in different curve sections can be met according to different gauge lines.

Further, the volume ratio of the rubber particles is 0-15%.

Further, the rubber particles are added during the concrete aggregate mixing process.

The beneficial technical effect of adopting the above technical solution is that the added amount of rubber particles is determined according to the design load of the sleeper, and the load increases as the added amount of rubber particles increases.

Further, the rubber particle concrete sleeper is trapezoidal or irregular.

The beneficial technical effect of adopting the above technical solution is that it can meet the requirement of high stability in the railway operation process.

Further, the width of the upper section of the rubber particle concrete sleeper is smaller than the width of the lower section.

The beneficial technical effect of adopting the above technical solution is that the amount of concrete is saved, the dead weight is reduced, and demoulding is facilitated in the production process.

Further, the rubber particles are made of recycled rubber.

The beneficial technical effect of adopting the above technical solution is that it can reduce the environmental pollution of waste rubber and meet the requirements of green environmental protection.

It can be known from the above-mentioned technical solutions that, compared with the prior art, the present invention provides a rubber particle concrete sleeper, which overcomes the disadvantages of ordinary concrete sleeper soil such as low tensile strength, small ultimate elongation, and brittleness. If it is not too large, it can increase the elasticity of concrete, reduce the impact damage to sleepers and ballast, and has excellent tensile, bending, shear, crack resistance, fatigue resistance, high toughness and other properties, especially avoiding the common concrete Soil sleepers have the characteristics of high rigidity, heavy weight, difficulty in construction, and not being environmentally friendly, which are more conducive to tensioning.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Accompanying drawing of Fig. 1 is the overall structure schematic diagram of a kind of rubber particle concrete sleeper provided by the present invention;

Fig. 2 accompanying drawing is the side view of a kind of rubber particle concrete sleeper provided by the present invention;

Figure 3 is a top view of a rubber particle concrete sleeper provided by the present invention.

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1-3, the embodiment of the present invention discloses a rubber particle concrete sleeper, including a reinforced concrete sleeper 1, the reinforced concrete sleeper 1 is laid on a ballasted track bed, and rubber particles 2 are blended into the The reinforced concrete sleeper 1, and the rubber particles 2 are distributed irregularly in the reinforced concrete sleeper 1. The microelastic effect of the rubber particles 2 of the present invention can change the stress redistribution inside the reinforced concrete, improve the volume stability of the reinforced concrete, and use the rubber particles 2 to improve the toughness of the reinforced concrete, significantly improving the impact resistance of the reinforced concrete sleeper 1 And fatigue resistance, has good ductility.

Specifically, the length of a rubber particle concrete sleeper is 2.5m-3.0m.

Specifically, the volume ratio of the rubber particles 2 is 0-15%.

Specifically, the rubber particles 2 are added during the concrete aggregate mixing process.

Specifically, the width of the upper section of a rubber particle concrete sleeper is smaller than the width of the lower section.

Specifically, the rubber particles 2 are made of recycled rubber.

In order to further embody the beneficial technical effects produced by the present invention, a rubber particle concrete sleeper in this embodiment can be trapezoidal or irregular in shape. In this embodiment, it is preferably trapezoidal, so that the scope of application is wider.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A rubber particle concrete sleeper, comprising a reinforced concrete sleeper, said reinforced concrete sleeper is laid on a ballasted track bed, characterized in that, rubber particles are also included, said rubber particles are blended in said reinforced concrete sleeper, and The rubber particles are distributed irregularly in the reinforced concrete sleeper. 2. A rubber particle concrete sleeper according to claim 1, characterized in that the length of the rubber particle concrete sleeper is 2.5m-3.0m. 3. A concrete sleeper with rubber particles according to claim 1, characterized in that the volume ratio of the rubber particles is 0-15%. 4. A rubber granule concrete sleeper according to claim 3, characterized in that the rubber granules are added during the mixing of concrete aggregates. 5. A rubber particle concrete sleeper according to claim 1, characterized in that, the rubber particle concrete sleeper is trapezoidal or irregular. 6. A rubber particle concrete sleeper according to claim 1, characterized in that the width of the upper section of the rubber particle concrete sleeper is smaller than the width of the lower section. 7. The concrete sleeper with rubber granules according to claim 1, wherein the rubber granules are made of recycled rubber.