CN217203443U

CN217203443U - Prestressed steel strand concrete crossing plate structure

Info

Publication number: CN217203443U
Application number: CN202220139994.5U
Authority: CN
Inventors: 翟玉桥; 张金段; 冯涛
Original assignee: Hebei Shouke Railway Equipment Co ltd
Current assignee: Hebei Shouke Railway Equipment Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-16
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses an including prestressed steel strand wires concrete crossing plate structure, crossing plate body top is equipped with two support rail grooves, its characterized in that side by side: the inside prestressing reinforcement skeleton that is equipped with of crossing board body, the top border position and the support rail groove top border position of crossing board body are equipped with the metal and bordure, have laid the reinforcement net piece between two support rail groove lateral walls and between support rail groove and the crossing board body lateral wall, and the reinforcement net piece is located the metal and bordures and between the prestressing reinforcement skeleton to form a whole through spliced pole and both fixed connection. The utility model has the characteristics of metal of a body structure is bordured, reinforcement net piece and prestressed reinforcement skeleton, overall structure stability is good, is applicable to the grade crossing mouth that the car throughput is more busy alternately needs the way, has overcome the fragile of other modes, the cost is high, the maintenance is inconvenient, not environmental protection, easy stolen shortcoming, have durable, the cost is low, intensity is high, lay fast, environmental protection, batch production.

Description

Prestressed steel strand concrete crossing plate structure

Technical Field

The utility model belongs to the technical field of the track traffic facility, specific theory relates to a prestressed steel strand wires concrete crossing plate structure.

Background

Today, where traffic is developed, crossing of railways and highways is very common. The crossing runs through the discrete crossing and the level crossing, and the crossing adopts the overpass is the safest, the most convenient and the most ideal running mode. However, due to the restrictions of geographical conditions, environment and economic conditions, some level crossings have to adopt a level crossing, which is a difficult point in railway safety management and maintenance.

The pavement materials of the level crossing comprise slates, wooden sleepers, reinforced concrete slabs, steel plates, rubber plates and the like. The specific material is determined according to the specific situation of the crossing.

The stone slab is generally made of local materials and has low price, and the defect that the stone slab is a brittle material, is easy to damage, has small volume and is easy to slide, and can only be used in places with small crossing width and only pass through pedestrians and power storage vehicles; the wooden sleeper is simple to process, convenient to lay, good in durability, easy to maintain and convenient to recycle, and has the defects of large wood resource consumption, long service life obviously shortened when the automobile flow is large, and the wooden sleeper is mainly used at temporary road junctions and places with not large automobile flow; the reinforced concrete slab has the advantages of simple manufacture, low price, batch production, high laying speed and easy replacement, and has the defects that the concrete corners are damaged due to vibration when a vehicle passes through, the concrete pavement slab is quickly damaged after the damage, and the service life is shortened; steel plates with the thickness of more than 15 mm are firm in pavement, large in bearing capacity, smooth, attractive and long in service life, and have the defects of high manufacturing and laying cost, difficulty in moving and maintaining and easiness in being stolen when not watched by people; the rubber pavement has small maintenance amount, simple laying and long service life, and has the defects of high cost and easy slippage, and a matched cement retaining wall is required to protect the rubber pavement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prestressed steel strand concrete crossing plate structure is applicable to the grade crossing of the more busy intercrossing of car throughput and is important, has overcome the fragile of other modes, cost height, maintenance inconvenient, not environmental protection, easy stolen shortcoming, has durable, cost low, intensity height, lays fast, environmental protection, but batch production's characteristics.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a prestressed steel strand concrete crossing board structure, the crossing board body that forms including concrete placement, crossing board body top is equipped with two rail bearing grooves side by side, the inside prestressed reinforcement skeleton that is equipped with of crossing board body, the top border position and the rail bearing groove top border position of crossing board body are equipped with the metal and bordure, have laid the reinforcement net piece between two rail bearing groove lateral walls and between rail bearing groove and the crossing board body lateral wall, and the reinforcement net piece is located the metal and bordures between and the prestressed reinforcement skeleton to form a whole through spliced pole and both fixed connection.

Further, prestressed reinforcement skeleton includes prestressed steel strand wires structure and stirrup structure, and the rail supporting groove is kept away from to the stirrup structure, arranges that the crossing plate body is close to the bottom position, and the prestressed steel strand wires structure is arranged in both sides about the stirrup structure to fixed connection with it, the stirrup structure is bordured through spliced pole and metal and is linked to each other with the reinforcement net piece.

Furthermore, the stirrup structure comprises stirrups which are arranged in a criss-cross mode, connecting points of the stirrups are fixed through binding wires or welded and fixed, and the stirrups are connected with metal covering edges and reinforcing net pieces through connecting columns.

Furthermore, the stirrup is of a frame structure formed by bending a twisted steel bar.

Furthermore, the prestressed steel strand structure includes the prestressed steel strand that vertically and horizontally staggered set up, and the tie point of prestressed steel strand and stirrup, prestressed steel strand and prestressed steel strand passes through binding wire fixed connection.

Furthermore, both ends of the prestressed steel strand are provided with anchoring pieces for preventing the prestressed steel strand from retracting.

Furthermore, a nylon sleeve for fixing the steel rail is fixedly arranged at the position of a rail bearing groove of the prestressed reinforcement framework, and a threaded structure is arranged in the nylon sleeve and is vertically arranged in the prestressed reinforcement framework.

Furthermore, the cross section of the rail bearing groove is of a structure with a small opening, a large web and a wide bottom, and the size of the rail bearing groove is matched with that of the steel rail.

Further, the thickness of the crossing plate body is 50 cm.

The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: metal covering edges are arranged at the top edge position of the crossing plate body and the top edge position of the rail bearing groove, so that the edge of the crossing plate body is protected, corner damage caused by strong vibration and impact when a vehicle passes through the crossing plate body is avoided, and the service life is prolonged; because the rail bearing groove is of a concave structure and is arranged at the top of the crossing plate body, a prestressed reinforcement framework consisting of prestressed steel strands and stirrups cannot be uniformly laid in the crossing plate body, but the rail bearing groove is avoided, cracks are easy to occur at the position without the prestressed reinforcement framework, so that the structural strength of the position without the prestressed reinforcement framework at the top of the crossing plate body is reduced, reinforcing mesh pieces are laid between the side walls of the two rail bearing grooves and between the rail bearing groove and the side walls of the crossing plate body, the reinforcing mesh pieces play a role of reinforcing structures at positions where the prestressed reinforcement frameworks cannot be arranged at the two sides of the rail bearing groove, and the cracking of concrete at the top of the crossing plate body is avoided to a certain extent; the metal edge, the reinforcing net piece and the prestressed reinforcement framework are fixedly connected into a whole through the connecting column, so that the structural stability of the crossing plate body is enhanced from inside to outside, and the crossing plate has stronger shock resistance, rolling resistance and vibration resistance.

Drawings

The accompanying drawings 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 and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a left side view of an embodiment of the present invention;

fig. 3 is a schematic structural view of a prestressed reinforcement cage according to an embodiment of the present invention;

fig. 4 is a left side view of a prestressed reinforcement cage according to an embodiment of the present invention;

fig. 5 is the embodiment of the utility model provides an in the embodiment the structure sketch map that stirrup and prestressing force steel strand connection.

Labeling components: the method comprises the following steps of 1-crossing plate body, 2-metal wrapping, 3-rail bearing groove, 4-bolt hole, 5-prestress steel strand, 51-anchoring piece, 6-nylon sleeve, 7-reinforcing mesh piece, 8-stirrup and 9-connecting column.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.

The utility model discloses a prestressed steel strand wires concrete crossing plate structure, as shown in fig. 1-4, including the crossing plate body 1 that concrete placement formed, 1 top of crossing plate body is equipped with two rail bearing grooves 3 side by side, 1 inside prestressed reinforcement skeleton that is equipped with of crossing plate body, the top border position of

crossing plate body

1 and 3 top border positions of rail bearing groove are equipped with the metal and bordure 2, has laid reinforcement net piece 7 between 3 lateral walls in two rail bearing grooves and between 3 lateral walls in rail bearing groove and 1 lateral wall of crossing plate body, and reinforcement net piece 7 is located the metal and bordures between 2 and the prestressed reinforcement skeleton to form a whole through spliced pole 9 and both fixed connection. The reinforcing net piece 7 is a net structure formed by weaving reinforcing steel bars which are fixed in a criss-cross mode, the cross points of the reinforcing net piece are fixed by welding and are laid at the position below the metal binding edge 2, and the reinforcing net piece is used for enhancing the structural strength that the prestressed reinforcement cage cannot be arranged at the area, close to the top, of the crossing plate body 1 due to the fact that the rail bearing grooves 3 are formed. Two rows of threaded holes 4 are formed in the rail bearing groove 3 and used for fixing the steel rail, specifically, a nylon sleeve 6 with a threaded structure is adopted in the embodiment to realize the function, and the metal edge covering 2 is formed by angle steel.

The beneficial effects of the utility model reside in that: the metal covering edges 2 are arranged at the top edge position of the crossing plate body 1 and the top edge position of the side wall of the rail bearing groove 3, so that the edge of the crossing plate body 1 is protected, corner damage caused by strong vibration and impact when a vehicle passes through is avoided, and the service life is prolonged; because the rail bearing grooves 3 are of a concave structure and are arranged at the top of the crossing plate body 1, a prestressed reinforcement framework consisting of prestressed steel strands 5 and stirrups 8 cannot be uniformly laid inside the crossing plate body 1, but the rail bearing grooves 3 are avoided, cracks are easily generated at the positions of the prestressed reinforcement framework, so that the structural strength of the positions of the non-prestressed reinforcement framework at the top of the crossing plate body 1 is reduced, reinforcing mesh sheets 7 are laid between the side walls of the two rail bearing grooves 3 and between the side walls of the rail bearing grooves 3 and the side wall of the crossing plate body 1, the reinforcing mesh sheets 7 play a role of reinforcing structures at positions where the prestressed reinforcement frameworks cannot be arranged at the two sides of the rail bearing grooves 3, and the cracking of concrete at the top of the crossing plate body 1 is avoided to a certain extent; the metal edge 2, the reinforcing mesh 7 and the prestressed reinforcement framework are fixedly connected into a whole through the connecting column 9, so that the structural stability of the crossing plate body 1 is enhanced from inside to outside, and the crossing plate has stronger impact resistance, rolling resistance and vibration resistance.

As a preferred embodiment, as shown in fig. 5, the prestressed reinforcement framework includes a prestressed steel strand structure and a hoop reinforcement structure, the hoop reinforcement structure avoids the rail-supporting groove 3, and is disposed at a position close to the bottom of the crossing plate body 1, the prestressed steel strand structure is disposed at the upper and lower sides of the hoop reinforcement structure and is fixedly connected to the hoop reinforcement structure, and the hoop reinforcement structure is connected to the metal covering edge 2 and the reinforcing mesh 7 through a connecting column 9. The stirrup structure includes the stirrup 8 of vertically and horizontally staggered setting, and the tie point of stirrup 8 is fixed or welded fastening through tying up the silk, and stirrup 8 links to each other with reinforcement net piece 7 through spliced pole 9 and metal bordure 2. The stirrup 8 is of a frame structure formed by bending a twisted steel bar. The prestressed steel strand structure comprises prestressed steel strands 5 which are arranged in a criss-cross mode, and the prestressed steel strands 5 are fixedly connected with the stirrups 8 and the connection points of the prestressed steel strands 5 and the prestressed steel strands 5 through binding wires.

Further, the thickness of the crossing plate body 1 is 50 cm. The crossing plate body 1 is 50 cm thick, receives the action of gravity, lays and accomplish the back very stably, can not take place the phenomenon of sliding, avoids simultaneously stealing the action and causes the damage, guarantees the safe current of railway and highway operation vehicle. As shown in fig. 3 to 4, the prestressed steel strands 5 and the stirrups 8 are bound and fixed by metal wires, the reinforcing mesh 7 and the connecting columns 9 are bound and fixed by metal wires, and the stirrups 8 and the metal wrapping 2 are welded and fixed to the connecting columns 9. The stirrups 8 are arranged at the non-rail-bearing groove part at the bottom of the crossing plate body 1 and are fixedly connected with the prestressed steel strands 5, so that the prestressed steel strands 5 are prevented from being dislocated in the concrete pouring process.

As a preferred embodiment, as shown in fig. 2, both ends of the prestressed steel strand 5 are provided with anchors 51 for preventing the retraction thereof. The prestressed steel strand 5 has higher extensibility than common prestressed steel wires and higher bond stress with concrete, so that on one hand, the hardened concrete can be ensured to generate tensile stress to a certain degree, and the crossing plate has higher crack resistance; on the other hand, the risk that the reinforcing steel bars are tensioned again to damage the concrete is reduced in the tension releasing process. Meanwhile, the anchoring piece 51 is adopted to anchor the prestressed steel strand 5, so that the retraction of the prestressed steel strand 5 is prevented, the compressive stress of the prestressed steel strand 5 on concrete can be more lasting, and the cracks and damage of the concrete caused by automobile impact are reduced.

As a preferred embodiment, as shown in fig. 4, a nylon sleeve 6 for fixing a steel rail is fixedly arranged at the position of the rail bearing groove 3 of the prestressed reinforcement frame, and the nylon sleeve 6 is internally provided with a threaded structure and is vertically arranged in the prestressed reinforcement frame.

The cross section of the rail bearing groove 3 is of a structure with a small opening, a large web and a wide bottom, and the size of the rail bearing groove 3 is matched with that of a steel rail. The rail bearing groove 3 is designed to be small in opening, large in abdomen and wide in bottom, and a nylon sleeve 6 for fixing the steel rail is embedded in the bottom of the rail bearing groove. The nylon sleeve 6 is integrally formed along with concrete pouring, is used for fixing the steel rail under the combined action of the nylon sleeve and the fixing bolt, ensures the installation stability of the steel rail, and has good damping new energy and anti-loosening and anti-rust performance. The small opening of the rail bearing groove 3 ensures that the gap between the edge of the notch of the rail bearing groove 3 of the crossing plate and the steel rail is as small as possible, so that the automobile can run more smoothly, the impact force is smaller, and the installation and maintenance of the steel rail are more convenient due to the large-web wide bottom. The crossing plate body 1 can change the direction of the rail bearing groove 3 with the designed size according to the specific situation of the crossing, and even if the crossing is a railway way crossing, the laying can be easily realized at a complex position.

To sum up, the utility model has the characteristics of but durable, cost low, intensity is high, laying speed is fast, the environmental protection, batch production, the fragile of having overcome other modes, the cost is high, the maintenance is inconvenient, not environmental protection, easily stolen shortcoming is applicable to the grade crossing of the more busy alternately important road of car throughput.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.

Claims

1. The utility model provides a prestressed steel strand concrete crossing plate structure, includes the crossing plate body that concrete placement formed, crossing plate body top is equipped with two support rail grooves, its characterized in that side by side: the inside prestressing reinforcement skeleton that is equipped with of crossing board body, the top border position and the support rail groove top border position of crossing board body are equipped with the metal and bordure, have laid the reinforcement net piece between two support rail groove lateral walls and between support rail groove and the crossing board body lateral wall, and the reinforcement net piece is located the metal and bordures and between the prestressing reinforcement skeleton to form a whole through spliced pole and both fixed connection.

2. The prestressed strand concrete gap plate structure of claim 1, wherein: prestressed reinforcement skeleton includes prestressed steel strand wires structure and stirrup structure, and the stirrup structure avoids the rail bearing groove, arranges in the crossing plate body and is close to the bottom position, and prestressed steel strand wires structural arrangement is in both sides about the stirrup structure to with it fixed connection, the stirrup structure is bordured through spliced pole and metal and is linked to each other with the reinforcement net piece.

3. The prestressed strand concrete gap plate structure of claim 2, wherein: the stirrup structure includes the stirrup that vertically and horizontally staggered set up, and the tie point of stirrup is fixed or welded fastening through tying up the silk, and the stirrup is bordured through spliced pole and metal and is linked to each other with the reinforcement net piece.

4. The prestressed strand concrete gap plate structure of claim 3, wherein: the stirrup is a frame structure formed by bending a twisted steel bar.

5. The prestressed strand concrete gap plate structure of claim 3, wherein: the prestressed steel strand structure comprises prestressed steel strands which are arranged in a criss-cross mode, and the prestressed steel strands are fixedly connected with the stirrups and the connection points of the prestressed steel strands and the prestressed steel strands through binding wires.

6. The prestressed strand concrete gap plate structure of claim 5, wherein: and both ends of the prestressed steel strand are provided with anchoring parts for preventing the prestressed steel strand from retracting.

7. The prestressed strand concrete gap plate structure of claim 1, wherein: and a nylon sleeve for fixing the steel rail is fixedly arranged at the position of the rail bearing groove of the prestressed reinforcement framework, and a threaded structure is arranged in the nylon sleeve and is vertically arranged in the prestressed reinforcement framework.

8. The prestressed strand concrete gap plate structure of claim 1, wherein: the cross section of the rail bearing groove is of a structure with a small opening, a large web and a wide bottom, and the size of the rail bearing groove is matched with that of the steel rail.

9. The prestressed strand concrete gap plate structure of claim 1, wherein: the crossing plate body is 50 cm thick.