CN219364220U - Prefabricated integral crossing plate structure for special railway line of steel mill - Google Patents

Abstract

The utility model discloses a steel mill railway special line prefabricated integral crossing plate structure, which relates to the field of railway construction and comprises prefabricated crossing plates, a concrete transition section, a water slag cushion layer and a concrete foundation layer, wherein dovetail rail bearing grooves are symmetrically formed in the top end of the inside of the prefabricated crossing plates, and connecting steel plates are arranged at the end parts of two side surfaces of the prefabricated crossing plates; the concrete transition sections are arranged on two sides of the prefabricated crossing plate, and the height of the concrete transition sections is flush with the prefabricated crossing plate; a water slag cushion layer is arranged below the prefabricated crossing plate and the concrete transition section, and a concrete foundation layer is arranged below the water slag cushion layer; the concrete foundation layer is a melon rice Dan Ganban concrete layer. The utility model can solve the problems that the existing steel-based ground or railway crossing in a steel mill has long construction period, low crossing strength, can not bear the impact rolling of a heavy-duty car, often causes pavement damage deformation, and is not easy to repair after being damaged; the maintenance period is short, the maintenance cost is high, the stability of the railway track is affected, and the problem of great potential safety hazard exists.

Description

Prefabricated integral crossing plate structure for special railway line of steel mill

Technical Field

The utility model relates to the technical field of railway crossings, in particular to a steel mill railway special line crossing plate structure.

Background

Railway special lines for transporting materials such as raw materials or finished steel products are arranged on large steel-based places such as steelworks. The special railway line is necessary to be in a place where the special railway line meets the highway, namely a railway crossing; railway crossings are an important facility for crossing railways and highways. The existing common road junction pavement forms mainly comprise stone pavement, wood sleeper pavement, concrete pavement, rubber plate pavement and the like, and have the defects of low construction speed and long road blocking time, such as the construction of paving a road junction on a certain steel-based ground by adopting traditional concrete integrally pouring road junction, the construction period required for railway traffic is at least 14 days, and the blocking of the railway for a long time inevitably influences the actual production of steel; on the other hand, the road junction with the structure has low strength, cannot bear the impact rolling of a heavy-duty car, often causes pavement damage deformation, and is not easy to repair after being damaged; the maintenance period is short, the maintenance cost is high, the stability of the railway track is affected, and great potential safety hazards exist.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a steel mill railway special line prefabricated integral crossing plate structure, which can solve the problems that the existing large-scale steel iron-based ground or railway crossing in a steel mill has long construction period, low crossing strength, cannot bear the impact rolling of a heavy-duty car, often causes pavement damage deformation, and is difficult to repair after being damaged; the maintenance period is short, the maintenance cost is high, the stability of the railway track is affected, and the problem of great potential safety hazard exists.

In order to solve the problems, the technical scheme of the utility model is as follows: the steel mill railway special line prefabricated integral crossing plate structure comprises a prefabricated crossing plate, a concrete transition section, a water slag cushion layer and a concrete foundation layer, wherein the prefabricated crossing plate is a prefabricated concrete plate which is prefabricated in advance and marked with numbers and hoisting sequences, two dovetail rail bearing grooves used for installing rails are symmetrically formed in the top end of the inside of the prefabricated crossing plate, and connecting steel plates are arranged at the end parts of two side surfaces of the prefabricated crossing plate; the concrete transition sections are arranged on two sides of the prefabricated crossing plate, and the height of the concrete transition sections is flush with the prefabricated crossing plate; the precast crossing plate and the concrete transition section are provided with a water slag cushion layer below, and the concrete foundation layer is provided with a concrete foundation layer below.

Among the above technical schemes, the more specific scheme is: the concrete foundation layer is a melon rice Dan Ganban concrete layer.

Further: the length of each prefabricated crossing plate is 2500m, the width of each prefabricated crossing plate is 3000m, and the thickness of each prefabricated crossing plate is 500mm.

Further: the width of the concrete transition section on each side is 1000m.

Further: the size of the dovetail rail bearing groove is 176mm in center depth, and the width of the upper opening is 260mm.

Further: the thickness of the grain slag cushion layer is 25mm, and the thickness of the concrete foundation layer dry-mixed by the guami stone is 120-130 mm.

Further: the water slag in the water slag cushion layer is iron-making blast furnace slag.

Further: the rail type of the rail is P60 rail.

By adopting the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. the road junction pavement is different from the traditional road junction pavement, is assembled into a whole in a segmented splicing mode, adopts the embedded part mode to carry out welding treatment, can effectively prevent the phenomenon of loosening of the whole pavement, can meet larger bearing requirements, and has the characteristics of flexible replacement and quick installation.

2. The utility model has the advantages that through reasonable and overall arrangement of each specialty, the early preparation work is organized in advance before the planning and the starting work is performed, the materials and the machines enter the field in advance, the working procedures are developed cooperatively according to the established plans, the connection is compact, the construction can be successfully completed only through continuous operation for about 48 hours, and the railway line operation is started. Compared with the defect that the construction period required by cast-in-place concrete integral ballast bed concrete needs at least 14 days, the maintenance period can be operated in a vehicle after 28 days, and the construction period is greatly shortened.

3. The utility model fully utilizes the characteristics of water slag (iron-making blast furnace slag), lays water slag with the thickness of 25mm on the top surface of the roadbed due to the potential hydraulic gelation property, forms hardening solidification by the heavy load of the train after meeting water, and plays a role in sealing the roadbed surface to prevent the roadbed from being softened by water penetration. When the road bed is paved and hoisted, the fine granular sand is utilized, so that the roadbed horizontal plane can be conveniently used for finding the adjustment of the hoisting flatness of the precast block. Therefore, compared with the traditional road junction deck, the road junction deck has the advantages of high construction precision, good quality, short period, long overall service life, convenient maintenance, neatness and attractiveness.

Drawings

FIG. 1 is a schematic cross-sectional view of a crossing;

fig. 2 is a schematic plan view of a road junction pavement.

The reference numerals in the figures are: 1-prefabricated crossing plates, 2-rail bearing grooves, 3-concrete transition sections, 4-water slag cushion layers, 5-concrete foundation layers and 6-steel rails.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

the steel mill railway special line prefabricated integral crossing plate structure of fig. 1 and 2 comprises a prefabricated crossing plate 1, a concrete transition section 3, a water slag cushion layer 4 and a concrete foundation layer 5.

The prefabricated crossing plate 1 is a prefabricated concrete plate which is prefabricated in advance and marked with numbers and hoisting sequences, two dovetail rail bearing grooves 2 for installing rails 6 are symmetrically formed in the top end of the inside of the prefabricated crossing plate 1, the size of each dovetail rail bearing groove is 176mm in center depth, the width of an upper opening is 260mm, and the type of a rail of each rail 6 is a P60 rail; the end parts of the two side surfaces of the prefabricated crossing plate 1 are provided with connecting steel plates. The road surface is provided with a prefabricated crossing plate 1, a concrete transition section 3, a water slag cushion layer 4 and a concrete foundation layer 5 from top to bottom. The two sides of the prefabricated crossing plates 1 are provided with concrete transition sections 3, the length of each prefabricated crossing plate 1 is 2500m, the width is 3000m, and the thickness is 500mm; the concrete transition sections 3 are arranged on two sides of the prefabricated crossing plate 1, the width of the concrete transition sections 3 is 1000m, and the height of the concrete transition sections is flush with the prefabricated crossing plate 1; the water slag cushion layer 4 is arranged below the prefabricated crossing plate 1 and the concrete transition section 3, and water slag is iron-making blast furnace slag, so that the water slag has potential hydraulic gelation property, the iron-making slag can be fully utilized, the energy is saved, and the environment is improved; a concrete foundation layer 5 is arranged below the water slag cushion layer 4, and the concrete foundation layer 5 is a melon rice Dan Ganban concrete layer; the thickness of the grain slag cushion layer 4 is 25mm, and the thickness of the dry-mixed concrete foundation layer 5 of the guami stone is 120-130 mm.

Claims (8)

1. The utility model provides a prefabricated whole road junction plate structure of steel mill railway special line which characterized in that: the concrete foundation slab comprises a prefabricated road junction slab (1), a concrete transition section (3), a water slag cushion layer (4) and a concrete foundation layer (5), wherein the prefabricated road junction slab (1) is a prefabricated concrete slab, two dovetail rail bearing grooves (2) for installing rails (6) are symmetrically formed in the top end of the inside of the prefabricated road junction slab (1), and connecting steel plates are arranged at the end parts of two side surfaces of the prefabricated road junction slab (1); the concrete transition sections (3) are arranged on two sides of the prefabricated crossing plate (1), and the height of the concrete transition sections is flush with the prefabricated crossing plate (1); the water slag cushion layer (4) is arranged below the prefabricated crossing plate (1) and the concrete transition section (3), and the concrete foundation layer (5) is arranged below the water slag cushion layer (4).

2. The steel mill railway line prefabricated integral crossing plate structure according to claim 1, wherein: the concrete foundation layer (5) is a melon rice Dan Ganban concrete layer.

3. The steel mill railway line prefabricated integral crossing plate structure according to claim 1 or 2, wherein: the length of each prefabricated crossing plate (1) is 2500m, the width is 3000m, and the thickness is 500mm.

4. A steel mill railway line prefabricated integral crossing plate structure according to claim 3, characterized in that: the width of the concrete transition section (3) is 1000m.

5. The steel mill railway line prefabricated integral crossing plate structure according to claim 4, wherein: the size of the dovetail rail bearing groove (2) is 176mm in center depth, and the width of the upper opening is 260mm.

6. The steel mill railway line prefabricated integral crossing plate structure according to claim 5, wherein: the thickness of the grain slag cushion layer (4) is 25mm, and the thickness of the concrete foundation layer (5) which is dry-mixed by the guami stone is 120-130 mm.

7. The steel mill railway line prefabricated integral crossing plate structure according to claim 6, wherein: the water slag in the water slag cushion layer (4) is iron-making blast furnace slag.

8. The steel mill railway line prefabricated integral crossing plate structure according to claim 6, wherein: the rail (6) is a P60 rail.