阅读说明：本技术 一种异型预制轨枕及其应用方法 (Special-shaped prefabricated sleeper and application method thereof ) 是由 吴俊� 段桂平 王欣怡 周小兵 杨传坤 许兆俊 张鸿飞 孙成 钱程 于 2019-11-08 设计创作，主要内容包括：本发明涉及城市轨道交通技术领域,尤其涉及一种异型预制轨枕及其应用方法,其特征在于：包括轨枕本体,所述轨枕本体的下部设置有至少两根支柱,所述支柱位置的所述轨枕本体上开设有用于安装钢轨扣件的锚固螺栓孔,所述锚固螺栓孔延伸至所述支柱内部。本发明的优点是：可保证在轨枕安装时不切断既有道床钢筋；轨枕与道床之间的连接强度高,实现高质量以及高稳定性的轨枕安装,同时可实现对轨道状态的高精度控制；提高施工效率,缩短施工时间,同时具有优异的经济性。(The invention relates to the technical field of urban rail transit, in particular to a special-shaped prefabricated sleeper and an application method thereof, which are characterized in that: the steel rail sleeper comprises a sleeper body, wherein at least two supporting columns are arranged on the lower portion of the sleeper body, anchor bolt holes used for installing steel rail fasteners are formed in the sleeper body at the supporting column positions, and the anchor bolt holes extend to the insides of the supporting columns. The invention has the advantages that: the method can ensure that the existing ballast bed steel bars are not cut off when the sleeper is installed; the connection strength between the sleeper and the track bed is high, the installation of the sleeper with high quality and high stability is realized, and meanwhile, the high-precision control on the track state can be realized; the construction efficiency is improved, the construction time is shortened, and the construction method has excellent economical efficiency.)

1. A prefabricated sleeper of abnormal shape which characterized in that: the steel rail sleeper comprises a sleeper body, wherein at least two supporting columns are arranged on the lower portion of the sleeper body, anchor bolt holes used for installing steel rail fasteners are formed in the sleeper body at the supporting column positions, and the anchor bolt holes extend to the insides of the supporting columns.

2. A profiled prefabricated sleeper as defined in claim 1, wherein: the sleeper body is provided with a preformed hole for arranging the connecting steel bars.

3. A profiled prefabricated sleeper as defined in claim 1, wherein: the support column is cylindrical, and a notch is formed in the side face of the sleeper body.

4. A profiled prefabricated sleeper as defined in claim 1, wherein: the support column is cuboid, and a notch is formed in the cuboid support column.

5. Method of application relating to profiled prefabricated sleepers according to claims 1 to 4, characterized in that: the application method is applied to reconstruction construction of existing track traffic, the existing track traffic comprises an existing under-rail foundation, existing steel bars are arranged in the existing under-rail foundation, and the application method at least comprises the following steps: prefabricating a special-shaped prefabricated sleeper according to the position of an existing steel bar arranged in the existing under-rail foundation, wherein the arrangement position of a column arranged at the lower part of the special-shaped prefabricated sleeper meets the requirement of avoiding the existing steel bar; arranging the special-shaped prefabricated sleeper above the existing underfloor foundation through secondary pouring; and a steel rail and the steel rail fastener are arranged above the special-shaped prefabricated sleeper.

6. The method of using profiled precast sleepers according to claim 5, wherein: and arranging a preformed hole on the special-shaped prefabricated sleeper, and arranging a connecting steel bar in the preformed hole to connect the special-shaped prefabricated sleeper and the existing underfloor foundation into a whole.

7. The method of using profiled precast sleepers according to claim 5, wherein: and the existing under-rail foundation is provided with a mounting hole matched with the stand column, and the stand column is mounted in the mounting hole to realize the positioning of the special-shaped prefabricated sleeper on the existing under-rail foundation.

8. The method of using profiled precast sleepers according to claim 5, wherein: the sleeper body of the special-shaped prefabricated sleeper is respectively provided with notches along the two vertical side surfaces in the existing track traffic line direction, and the notches are arranged along the whole length of the sleeper body.

Technical Field

The invention relates to the technical field of urban rail transit, in particular to a special-shaped prefabricated sleeper and an application method thereof.

Background

With the increasing of service life and vehicle passing mileage of urban rail transit, the local structural failure of the rail foundation increases gradually. In the past, a scheme of chiseling a partially failed under-rail foundation for cast-in-place again is often adopted in transformation, but the problems that the rail state (ultrahigh and rail bottom slope) is difficult to control, the casting quality is difficult to guarantee and the like exist. If the prefabricated sleeper is adopted, the problems can be solved, but the reinforcing steel bars in the existing rail foundation need to be cut off to meet the requirement of the installation space of the prefabricated sleeper made of reinforced concrete in the conventional shape, so that the existing structure is damaged.

Disclosure of Invention

The invention aims to provide a special-shaped prefabricated sleeper and an application method thereof according to the defects of the prior art, and the special-shaped prefabricated sleeper and the application method thereof are used for realizing the reconstruction construction of the foundation under the rail on the premise of not cutting off the reinforcing steel bars of the foundation under the rail by designing the structure of the special-shaped prefabricated sleeper.

The purpose of the invention is realized by the following technical scheme:

a prefabricated sleeper of abnormal shape which characterized in that: the steel rail sleeper comprises a sleeper body, wherein at least two supporting columns are arranged on the lower portion of the sleeper body, anchor bolt holes used for installing steel rail fasteners are formed in the sleeper body at the supporting column positions, and the anchor bolt holes extend to the insides of the supporting columns.

The sleeper body is provided with a preformed hole for arranging the connecting steel bars.

The support column is cylindrical, and a notch is formed in the side face of the sleeper body.

The support column is cuboid, and a notch is formed in the cuboid support column.

An application method related to the special-shaped prefabricated sleeper is characterized by comprising the following steps: the application method is applied to reconstruction construction of existing track traffic, the existing track traffic comprises an existing under-rail foundation, existing steel bars are arranged in the existing under-rail foundation, and the application method at least comprises the following steps: prefabricating a special-shaped prefabricated sleeper according to the position of an existing steel bar arranged in the existing under-rail foundation, wherein the arrangement position of a column arranged at the lower part of the special-shaped prefabricated sleeper meets the requirement of avoiding the existing steel bar; arranging the special-shaped prefabricated sleeper above the existing underfloor foundation through secondary pouring; and a steel rail and the steel rail fastener are arranged above the special-shaped prefabricated sleeper.

And arranging a preformed hole on the special-shaped prefabricated sleeper, and arranging a connecting steel bar in the preformed hole to connect the special-shaped prefabricated sleeper and the existing underfloor foundation into a whole.

And the existing under-rail foundation is provided with a mounting hole matched with the stand column, and the stand column is mounted in the mounting hole to realize the positioning of the special-shaped prefabricated sleeper on the existing under-rail foundation.

The sleeper body of the special-shaped prefabricated sleeper is respectively provided with notches along the two vertical side surfaces in the existing track traffic line direction, and the notches are arranged along the whole length of the sleeper body.

The invention has the advantages that: the method can ensure that the existing ballast bed steel bars are not cut off when the sleeper is installed; the connection strength between the sleeper and the track bed is high, the installation of the sleeper with high quality and high stability is realized, and meanwhile, the high-precision control on the track state can be realized; the construction efficiency is improved, the construction time is shortened, and the construction method has excellent economical efficiency.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the mounting structure of the present invention;

FIG. 3 is a second structural diagram of the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-3, the symbols 1-12 in the figures are respectively expressed as: the special-shaped precast sleeper comprises a special-shaped precast sleeper 1, a cylindrical support column 2, anchor bolt holes 3, a preformed hole 4, a notch 5, an existing under-rail foundation 6, existing steel bars 7, connecting steel bars 8, a secondary pouring body 9, a steel rail 10, a steel rail fastener 11 and a cuboid support column 12.