CN210262719U - Longitudinal connecting plate beam structure - Google Patents
Longitudinal connecting plate beam structure Download PDFInfo
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- CN210262719U CN210262719U CN201920964561.1U CN201920964561U CN210262719U CN 210262719 U CN210262719 U CN 210262719U CN 201920964561 U CN201920964561 U CN 201920964561U CN 210262719 U CN210262719 U CN 210262719U
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Abstract
The utility model relates to a longitudinal connecting plate girder structure, belonging to the technical field of rail and bridge engineering, comprising a plate body, wherein the plate body comprises a longitudinal post-tensioned prestressed duct and a lacing wire hole for installing longitudinal lacing wires between beam plates, the longitudinal post-tensioned prestressed hole has camber, and the top surface of the plate body is provided with two parallel and spaced rail bearing grooves; the top surface of the plate body is recessed inwards to form the rail bearing groove, and the rail bearing groove longitudinally penetrates through the two end surfaces of the plate body. The utility model combines the track function and the bridge function into a whole, not only has simple structure, but also can reduce the construction cost, and is a brand new upper structure of the bridge; the tie bar holes for installing longitudinal tie bars between the beam plates are reserved in the plate body, and the plurality of rail plate beams are connected together to form a long section or full-line longitudinal connecting plate beam by installing the longitudinal tie bars in the tie bar holes. When one end of the track plate beam is stressed, the other end of the track plate beam is pulled by the longitudinal tie bar so as not to lower the head downwards and tilt upwards, and the overall stability of the track can be enhanced.
Description
Technical Field
The utility model relates to a track and bridge engineering technical field especially relate to a indulge and link plate girder structure.
Background
Railroad bridges are structures that a railroad spans a river, lake, straits, valley or other obstacle, and are constructed to achieve a grade crossing of a railroad line with a railroad line or road. The railway bridge is divided into a railway bridge and a highway and railway dual-purpose bridge according to the application; the bridge is divided into a beam bridge, an arch bridge, a rigid frame bridge, a suspension bridge, a cable-stayed bridge, a combined system bridge and the like according to the structure. The railway bridge is mostly a beam bridge. The bridge is the most widely used bridge type and can be subdivided into a simple girder bridge, a continuous girder bridge and a cantilever girder bridge.
With the development of social economy, the construction requirements of traffic facilities are more and more increased. The track is used as an infrastructure, and the construction period and the cost of the track are important indexes for assessment. The plate girder is the superstructure of the bridge. In the existing railway bridge, the track slab is a track slab, the slab beam is a slab beam, the structure is complex, the construction method is complicated, the construction period is long, and the construction cost is high.
In addition, to form a track, a plurality of track plates need to be laid along a track line, when a rail vehicle passes through, wheels sequentially roll two ends of each track plate, so that the track plates are prone to collapse, plate beams vibrate frequently, and damage to the plate beams is accelerated; while affecting train comfort.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a longitudinal connecting plate girder structure, which combines the track function and the bridge function into a whole, has simple structure and can reduce the construction cost; meanwhile, the rail plate can be prevented from being lifted off, and the overall stability of the rail is enhanced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the longitudinal connection plate girder structure comprises a plate body, wherein a longitudinal post-tensioned prestressed duct and a lacing wire hole used for installing longitudinal lacing wires between beam plates are reserved in the plate body, the longitudinal post-tensioned prestressed hole has camber, and two parallel and spaced rail bearing grooves are formed in the top surface of the plate body.
Furthermore, the plate body is a frame plate with a hollow part in the center, and the lacing wire hole penetrates through the hollow part and the end face of the plate body.
Furthermore, the top surface of the plate body is recessed inwards to form the rail bearing grooves, and the rail bearing grooves longitudinally penetrate through the two end surfaces of the plate body.
Preferably, there are at least two groups of post-tensioned prestressed ducts, and there are a group of longitudinal post-tensioned prestressed ducts below the two rail-supporting grooves.
Further preferably, the number of longitudinal post-tensioned pre-stressed ducts is 4-6.
Furthermore, a pre-buried hoisting sleeve and a third rail support fixing pipe sleeve are arranged on the side face of the plate body.
Furthermore, the two ends of the plate body are provided with constraint gaps matched with the limit convex blocking platforms, and the constraint gaps vertically penetrate through the top surface and the bottom surface of the rail plate beam.
Preferably, the lacing hole is symmetrically provided with two lacing holes.
Compared with the prior art, the utility model discloses following beneficial effect has:
1, the utility model combines the track function and the bridge function into a whole, not only has simple structure, but also can reduce the construction cost, and is a brand new upper structure of the bridge; a longitudinal post-tensioned prestressed duct is reserved in the plate body, and a prestressed beam is penetrated in the prestressed duct to apply pre-tensioning stress to the prestressed beam before the train runs, so that the prestress is applied in advance in the plate body, the plate body bears the compressive stress, and the plate body generates certain deformation to resist the impact load of the train;
and 2, reserving lacing wire holes for installing longitudinal lacing wires between the beam and the plate in the plate body, and connecting a plurality of rail plate beams together to form a long-section or full-line longitudinal connecting plate beam by installing the longitudinal lacing wires in the lacing wire holes. When one end of the track plate beam is stressed, the other end of the track plate beam is pulled by the longitudinal tie bar so as not to lower the head downwards and tilt upwards, and the overall stability of the track can be enhanced.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
fig. 3 is a left side view of the present invention;
FIG. 4 is a top view of the present invention when it is longitudinally connected together;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
in the figure: the method comprises the following steps of 1-plate body, 2-steel rail, 3-embedded hoisting sleeve, 4-beam-plate longitudinal tie bar, 5-third rail bracket fixing pipe sleeve, 6-limiting convex baffle platform, 11-rail bearing groove, 12-constraint notch, 13-tie bar hole, 14-hollow and 15-longitudinal post-tensioned pre-stressed duct.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model discloses a longitudinal connecting plate girder structure, which comprises a plate body 1, wherein a longitudinal post-tensioned prestressed duct 15 and a lacing wire hole 13 for installing a longitudinal lacing wire between the beam and the plate are reserved in the plate body 1. The number of the longitudinal post-tensioned prestressed tunnels 15 is set according to the requirement. By penetrating the prestressed tendons in the longitudinal post-tensioned prestressed duct 15, the prestressed tendons are prestressed before the plate body 1 is subjected to external force, so that prestress is exerted in advance in the plate body 1, the plate body 1 is subjected to compressive stress, and further the plate body is deformed to a certain extent, and the bending resistance and the rigidity of the plate body are improved.
In this embodiment, the plate body 1 is a frame plate, the center of the plate body is provided with a hollow 14, and the lacing hole 13 penetrates through the hollow 14 and the end surface of the plate body 1.
When the plate body 1 is used for a railway bridge, in order to avoid short wave irregularity, the top surface of the plate body 1 is provided with a concave rail bearing groove 11 for embedding a steel rail, the rail bearing groove 11 longitudinally penetrates through two end surfaces of the plate body 1, and two rail bearing grooves 11 are arranged in parallel at intervals. The "top surface" in the present embodiment refers to the upper surface of the plate body 1 when it is mounted for use. Two groups of longitudinal post-tensioned prestressed tunnels 15 are provided, and the two groups of longitudinal post-tensioned prestressed tunnels 15 are respectively positioned below one of the rail bearing grooves 11. The two groups of longitudinal post-tensioned pre-stressed ducts 15 are symmetrically arranged, and the number of the longitudinal post-tensioned pre-stressed ducts 15 is 6. Of course, the longitudinal post-tensioned prestressing duct 15 can be set to 3 groups, 4 groups or even more, but there should be one group below each of the two rail grooves 11. When the device is used, the steel rail is directly embedded in the rail bearing groove 11, continuous support can be provided for the steel rail, most vibration sources are consumed, the train runs smoothly, and the service lives of the steel rail and the train are prolonged. The side surface of the plate body 1 is provided with an embedded hoisting sleeve 3 and a third rail bracket fixing pipe sleeve 5.
The both ends of plate body 1 have with spacing protruding type keep off the restraint breach 12 that the platform matches, through keeping off the platform assembly with restraint breach 12 and spacing protruding type, can carry on spacingly to single plate body 1.
The utility model discloses still disclose a indulge and link track slab structure, as shown in fig. 4, 5, it includes that a plurality of track slab girders and spacing protruding type keep off platform 6, and a plurality of track slab girders are vertical, the interval is laid, and spacing protruding type keeps off platform 6 dress in restraint breach 12, and two adjacent track slab girders link together by vertical lacing wire 4 between two beam slabs, and vertical lacing wire 4 dress is in lacing wire hole 13 between the beam slab. The constraint gap is U-shaped or semicircular, and two adjacent prestressed concrete plate beams share the same limiting convex baffle platform 6. The rail 2 is fitted in the rail receiving groove 11.
The size of the plate body 1 is set according to the requirement, and the thickness of the plate body 1 is in direct proportion to the length of the plate body. In the present embodiment, the length of the plate body 1 is 4.8m to 9.8m, and the thickness of the plate body 1 is 400 mm to 700 mm. In addition, the present embodiment also provides a table of the relationship between the thickness and the length, as shown in table 1.
TABLE 1
| Track slab length (mm) | Track plate thickness (mm) |
| 4800 | 400 |
| 5800 | 450 |
| 6800 | 500 |
| 7800 | 580 |
| 8800 | 650 |
| 9800 | 700 |
The utility model discloses a manufacturing method of above-mentioned indulge even plate girder structure needs to produce the steel model that matches with plate body 1 earlier stage, then produces according to following step:
step a, binding a reinforcement cage framework of a plate body 1 and merging the reinforcement cage framework into a steel mould;
b, mounting a lacing wire hole 13 between the end part of the steel mould of the longitudinal connecting plate beam and the inner steel mould to form a hole PVC pipe, and firmly fixing; the inner steel mould corresponds to the hollow 14 of the plate body 1.
And installing a corrugated pipe and a liner pipe or other pipelines at corresponding positions of the longitudinal post-tensioned prestressed pore passage 15, wherein the liner pipe or other pipelines are exposed. The upper surface of the plate body 1 when mounted is the lower surface when prefabricated, and the surface with the rail bearing groove 11 faces downwards. The plate body 1 is provided with reverse camber during prefabrication, and the pipelines arranged at the positions corresponding to the longitudinal post-tensioned pre-stressed ducts 15 are provided with the same reverse camber. 4-6 longitudinal post-tensioned pre-stressed ducts 15 are arranged on the plate body. The number of the longitudinal post-tensioned prestressing channels 15 can be increased or decreased according to the length change of the plate body 1.
C, pouring concrete, after the concrete is initially set, pulling out the liner tube and the PVC tube, and continuing steam curing;
and d, demolding, hanging the plate body 1 out, and verifying. And (3) taking out the spatial positions of the liner tube and the PVC tube, namely forming a longitudinal post-tensioned pre-stressed duct 15 at the original position of the liner tube, and forming a lacing wire hole 13 at the original position of the PVC tube to finish the manufacture of the plate body 1.
And after the plate body 1 is manufactured, prestress tensioning and continuous maintenance are carried out subsequently. The method comprises the following specific steps;
and 2, tensioning the prestressed tendons by using a jack, wherein during tensioning, the plate body 1 is placed on the reverse side, and the side with the rail bearing groove 11 faces downwards. And after tensioning is finished, sealing the anchor by adopting high polymer concrete. The plate body 1 is pre-arched by 5mm-10mm through prestress tension.
And 3, hanging the rail plate beam after the anchor is sealed into the water culture pond, and continuously performing water culture and natural culture.
The utility model provides a brand-new superstructure of bridge unites two into one track function and bridge function, not only constitutes simply, can reduce construction cost moreover. The longitudinal post-tensioned prestressed duct is reserved in the plate body, and prestress is applied in advance in the plate body by penetrating the prestressed tendons in the plate body, so that the plate body bears compressive stress and further generates certain deformation, and when a train passes through, the internally-penetrated prestressed tendons can resist the impact load of the train firstly.
The tie bar holes for installing longitudinal tie bars between the beam plates are reserved in the plate body, and the plurality of rail plate beams are connected together to form a long section or full-line longitudinal connecting plate beam by installing the longitudinal tie bars in the tie bar holes. When one end of the track plate beam is stressed, the other end of the track plate beam is pulled by the longitudinal tie bar so as not to lower the head downwards and tilt upwards, and the overall stability of the track can be enhanced. And the utility model discloses can provide continuous support to the rail, do benefit to the train and move smoothly, prolong the life-span of rail and train.
Naturally, the invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it is intended that all such modifications and variations that fall within the spirit and scope of the appended claims be interpreted as broadly as the present invention is appropriate to the skilled person.
Claims (9)
1. A longitudinal connection plate girder structure is characterized by comprising a plate girder, wherein the plate girder comprises a plate body, a longitudinal post-tensioning prestressed duct and a lacing wire hole for installing a longitudinal lacing wire between a beam and a plate are reserved in the plate body, the longitudinal post-tensioning prestressed duct has camber, and two parallel and spaced rail bearing grooves are formed in the top surface of the plate body.
2. The stringer beam structure of claim 1, wherein: the plate body is a frame plate with a hollow part in the center, and the lacing wire hole penetrates through the hollow part and the end face of the plate body.
3. The stringer beam structure of claim 1, wherein: the top surface of the plate body is recessed inwards to form the rail bearing groove, and the rail bearing groove longitudinally penetrates through the two end surfaces of the plate body.
4. The longitudinally connected slab beam structure according to claim 1 or 3, wherein: at least two groups of longitudinal post-tensioned pre-stressed ducts are arranged, and a group of longitudinal post-tensioned pre-stressed ducts are respectively arranged below the two rail supporting grooves.
5. The stringer beam structure of claim 1, 2 or 3, wherein: the total number of the longitudinal post-tensioned prestressed ducts is 4-6.
6. The longitudinally connected slab beam structure according to claim 1 or 3, wherein: the side surface of the plate body is provided with a pre-buried hoisting sleeve and a third rail bracket fixing pipe sleeve.
7. The longitudinally connected slab beam structure according to claim 1 or 3, wherein: the both ends of plate body have with spacing protruding type keep off the restraint breach that the platform matches, the vertical top surface and the bottom surface that run through the rail slab roof beam of restraint breach.
8. The stringer beam structure of claim 7, wherein: the restriction notch is U-shaped or semicircular.
9. The stringer beam structure of claim 1, wherein: the lacing hole symmetry is equipped with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964561.1U CN210262719U (en) | 2019-06-25 | 2019-06-25 | Longitudinal connecting plate beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964561.1U CN210262719U (en) | 2019-06-25 | 2019-06-25 | Longitudinal connecting plate beam structure |
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| Publication Number | Publication Date |
|---|---|
| CN210262719U true CN210262719U (en) | 2020-04-07 |
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|---|---|---|---|
| CN201920964561.1U Active CN210262719U (en) | 2019-06-25 | 2019-06-25 | Longitudinal connecting plate beam structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184914A (en) * | 2019-06-25 | 2019-08-30 | 成都天府轨谷科技有限公司 | A kind of vertical connecting plate girder construction and production method |
| CN110184912A (en) * | 2019-06-04 | 2019-08-30 | 成都天府轨谷科技有限公司 | A kind of rail slab and girder system and production method |
-
2019
- 2019-06-25 CN CN201920964561.1U patent/CN210262719U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184912A (en) * | 2019-06-04 | 2019-08-30 | 成都天府轨谷科技有限公司 | A kind of rail slab and girder system and production method |
| CN110184914A (en) * | 2019-06-25 | 2019-08-30 | 成都天府轨谷科技有限公司 | A kind of vertical connecting plate girder construction and production method |
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