CN110184914B - Longitudinal connecting plate beam structure and manufacturing method - Google Patents
Longitudinal connecting plate beam structure and manufacturing method Download PDFInfo
- Publication number
- CN110184914B CN110184914B CN201910556441.2A CN201910556441A CN110184914B CN 110184914 B CN110184914 B CN 110184914B CN 201910556441 A CN201910556441 A CN 201910556441A CN 110184914 B CN110184914 B CN 110184914B
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- longitudinal
- plate
- plate body
- rail
- lacing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a longitudinal connecting plate girder structure and a manufacturing method thereof, belonging to the technical field of track and bridge engineering, and 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 longitudinal lacing wires between the plate girders are reserved in the plate body, the longitudinal post-tensioning prestressed duct 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 concave to form the rail bearing groove, and the rail bearing groove longitudinally penetrates through the two end surfaces of the plate body. The invention combines the track function and the bridge function into a whole, has simple structure, can reduce the construction cost, and is a brand-new upper structure of the bridge; and a lacing hole for installing longitudinal lacing wires between the beam plates is reserved in the plate body, and a plurality of rail plate beams are connected together to form a long section or an all-line longitudinal connecting plate beam by installing the longitudinal lacing wires in the lacing hole. When one end of the rail plate beam is stressed, the other end of the rail plate beam is pulled by the longitudinal lacing wire, so that the rail plate beam cannot lower down and tilt upwards, and the overall stability of the rail can be enhanced.
Description
Technical Field
The invention relates to the technical field of track and bridge engineering, in particular to a longitudinal connecting plate girder structure and a manufacturing method thereof.
Background
Railroad bridges are structures where a railway crosses a river, lake, strait, valley or other obstacle, and is constructed to achieve a three-dimensional intersection of a railroad line with a railroad line or road. Railway bridges are divided into railway bridges and highway-railway bridges according to purposes; the bridge is divided into a girder bridge, an arch bridge, a rigid frame bridge, a suspension bridge, a cable-stayed bridge, a combined system bridge and the like according to structures. Railroad bridges are most commonly beam bridges. The bridge type is the most widely used bridge type and can be subdivided into a simply supported bridge, a continuous beam bridge and a cantilever beam bridge.
With the development of social economy, the construction requirements of traffic facilities are increasing. The track is used as an infrastructure, and the construction period and the cost are important indexes for assessment. The slab beam is the superstructure of the bridge. The existing railway bridge has the defects that the track slab is a track slab, the slab beam is a slab beam, the structure is complex, the construction method is complex, the construction period is long, and the construction cost is high.
In addition, to form a track, a plurality of track slabs are paved along a track line, and when a track vehicle passes through, wheels sequentially roll two ends of the track slabs to enable the track slabs to be at the same voltage, so that slab beams vibrate frequently and the slab beams are accelerated to be damaged; while affecting train comfort.
Disclosure of Invention
The invention aims to provide a longitudinal connecting plate girder structure and a manufacturing method thereof, which integrate the track function and the bridge function into a whole, have simple structure and can reduce the construction cost; at the same time, the rail plate is prevented from being prone to start, and the overall stability of the rail is enhanced.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The longitudinal connecting plate beam structure comprises a plate body, wherein a longitudinal post-tensioning prestressed duct and a lacing wire hole for installing longitudinal lacing wires between the plates of the plate body 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.
Further, the plate body is a frame plate with a hollowed-out center, and the lacing wire holes penetrate through the hollowed-out end faces of the plate body.
Further, the top surface of the plate body is concave to form the rail bearing groove, and the rail bearing groove longitudinally penetrates through the two end surfaces of the plate body.
Preferably, the post-tensioning prestressed duct has at least two groups, and a group of longitudinal post-tensioning prestressed duct is respectively arranged below the two rail bearing grooves.
Further preferably, there are 4-6 longitudinal post-tensioned prestressing channels.
Further, the side face of the plate body is provided with a pre-buried hoisting sleeve and a third rail bracket fixing sleeve.
Further, the two ends of the plate body are provided with constraint notches matched with the limiting convex baffle table, and the constraint notches vertically penetrate through the top surface and the bottom surface of the rail plate beam.
Preferably, two lacing wire holes are symmetrically arranged.
The manufacturing method of the longitudinal connecting plate girder structure comprises the following steps,
Step a, binding a reinforcement cage framework of a plate body, and incorporating a steel mould;
Step b, installing a lacing wire hole pore-forming PVC pipe between the end part of the longitudinal connecting plate girder steel mould and the inner steel mould, wherein the lacing wire hole pore-forming PVC pipe is firmly fixed, and the inner steel mould corresponds to the hollowed-out part on the plate body;
Installing a corrugated pipe and a liner pipe at the corresponding position of the post-tensioned prestressing duct, and forming an edge of the liner pipe and installing an embedded sleeve;
c, pouring concrete, pulling out the liner tube after the concrete is initially set, and continuing steam curing;
And d, demolding, hanging out and checking.
Compared with the prior art, the invention has the following beneficial effects:
The invention combines the track function and the bridge function into a whole, has simple structure, can reduce the construction cost, and is a brand new upper structure of the bridge; the longitudinal post-tensioning prestressed duct is reserved in the plate body, and the prestressing force is applied to the prestressing force bundles before the train runs by penetrating the prestressing force bundles in the longitudinal post-tensioning prestressed duct, so that the prestressing force is applied in the plate body in advance, the plate body is subjected to compressive stress, and a certain deformation is generated to resist the impact load of the train;
2, reserving lacing wire holes for installing longitudinal lacing wires between the beam plates 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 rail plate beam is stressed, the other end of the rail plate beam is pulled by the longitudinal lacing wire, so that the rail plate beam cannot lower down and tilt upwards, and the overall stability of the rail 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 longitudinally connected together;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
In the figure: the steel rail comprises a 1-plate body, a 2-steel rail, a 3-embedded hoisting sleeve, a 4-beam plate longitudinal lacing wire, a 5-third rail bracket fixing sleeve, a 6-limiting convex baffle, a 11-rail bearing groove, a 12-constraint notch, a 13-lacing wire hole, a 14-hollow hole and a 15-longitudinal post-tensioning prestressed duct.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
As shown in fig. 1-3, the longitudinal connecting plate girder structure disclosed by the invention comprises a plate body 1, wherein a longitudinal post-tensioning prestressed duct 15 and a lacing wire hole 13 for installing longitudinal lacing wires between the girder plates are reserved in the plate body 1. The number of the longitudinal post-tensioning prestressed duct 15 is set according to the requirement. By penetrating the prestressing force bundles in the longitudinal post-tensioned prestressing force duct 15, prestressing force is applied to the prestressing force bundles before the plate body 1 is subjected to external force, so that prestressing force is applied in advance in the plate body 1, the plate body 1 is subjected to compressive stress, and certain deformation is further generated, so that the bending resistance and the rigidity of the plate body are improved.
In this embodiment, the plate body 1 is a frame plate, and a hollow 14 is provided in the center, and the lacing wire hole 13 penetrates through the hollow 14 and the end face of the plate body 1.
When the plate body 1 is used for a railway bridge, in order to avoid shortwave irregularity, the top surface of the plate body 1 is provided with concave rail bearing grooves 11 for embedding steel rails, the rail bearing grooves 11 longitudinally penetrate through two end surfaces of the plate body 1, and two rail bearing grooves 11 are arranged at parallel intervals. The "top surface" in this embodiment refers to the upper surface of the board body 1 when mounted for use. The two groups of longitudinal post-tensioning prestressed channels 15 are arranged, and the two groups of longitudinal post-tensioning prestressed channels 15 are respectively positioned below one rail bearing groove 11. The two groups of longitudinal post-tensioning prestressed channels 15 are symmetrically arranged, and the total number of the longitudinal post-tensioning prestressed channels 15 is 6. Of course, the longitudinal post-tensioning prestressed channels 15 may be arranged in 3 groups, 4 groups or more, but there should be one group below each of the two rail grooves 11. When in use, the steel rail is directly embedded in the rail bearing groove 11, so that 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 sleeve 5.
The two ends of the plate body 1 are provided with constraint notches 12 matched with the limiting convex baffle tables, and the single plate body 1 can be limited by assembling the constraint notches 12 with the limiting convex baffle tables.
The invention also discloses a longitudinally connected track slab structure, as shown in figures 4 and 5, which comprises a plurality of track slab beams and a limiting convex baffle 6, wherein the plurality of track slab beams are longitudinally and alternately paved, the limiting convex baffle 6 is arranged in a constraint notch 12, two adjacent track slab beams are connected together by two longitudinal lacing wires 4 between the beam slabs, and the longitudinal lacing wires 4 between the beam slabs are arranged in lacing wire holes 13. The constraint notch is U-shaped or semicircular, and two adjacent prestressed concrete slab beams share the same limiting convex baffle 6. The rail 2 is embedded in the rail bearing 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 thereof. 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 to 700mm. In addition, the present embodiment also provides a table of thickness versus length, see table 1.
TABLE 1
| Track slab length (mm) | Track slab thickness (mm) |
| 4800 | 400 |
| 5800 | 450 |
| 6800 | 500 |
| 7800 | 580 |
| 8800 | 650 |
| 9800 | 700 |
The manufacturing method of the longitudinal connecting plate beam structure disclosed by the invention comprises the steps of manufacturing a steel mould matched with the plate body 1 in the early stage, and then producing according to the following steps:
Step a, binding a reinforcement cage framework of the plate body 1, and incorporating a steel mould;
step b, installing lacing wire holes 13 between the end part of the longitudinal connecting plate girder steel mould and the inner steel mould to form a hole PVC pipe, and fixing firmly; the inner steel mould corresponds to the hollowed-out part 14 of the plate body 1.
And installing corrugated pipe, liner pipe or other pipelines at corresponding positions of the longitudinal post-tensioned prestressing pore canal 15, and forming edges of the liner pipe or other pipelines. The upper surface of the plate body 1 in installation is the lower surface in prefabrication, and the surface with the rail bearing groove 11 faces downwards. The plate body 1 is provided with opposite camber when being prefabricated, and the pipelines arranged at the corresponding positions of the longitudinal post-tensioned prestressing duct 15 are provided with the same opposite camber. The number of the longitudinal post-tensioned prestressing passages 15 of the plate body is 4-6. The number of longitudinal post-tensioned prestressing tunnels 15 can be increased or decreased according to the length change of the plate body 1.
Step c, pouring concrete, pulling out the liner tube and the PVC pipe after the concrete is initially set, and continuing steam curing;
And d, demolding, hanging the plate body 1, and verifying. And taking out the space positions of the liner tube and the PVC pipe, namely forming a longitudinal post-tensioning prestressed duct 15 at the original position of the liner tube, and forming a lacing wire hole 13 at the original position of the PVC pipe to finish the manufacturing of the plate body 1.
And after the plate body 1 is manufactured, carrying out prestress tensioning and continuous maintenance. The method comprises the following specific steps of;
step 1, penetrating a prestress beam in a longitudinal post-tensioned prestressing duct 15;
And 2, tensioning the prestressed bundles by using a jack, wherein the plate body 1 is placed on the reverse side and the side with the rail bearing groove 11 faces downwards during tensioning. And after tensioning is completed, adopting high molecular concrete to seal the anchor. The plate body 1 is prestressed by 5mm-10mm by prestress tensioning.
And 3, hanging the anchored rail plate beam into a water curing pool, and continuing water curing and natural curing.
The invention provides a brand-new upper structure of a bridge, which combines the track function and the bridge function into a whole, has simple structure and can reduce the construction cost. The longitudinal post-tensioning prestressed duct is reserved in the plate body, and the prestress is applied in advance in the plate body by penetrating the prestressed bundles in the longitudinal post-tensioning prestressed duct, so that the plate body is subjected to compressive stress, and further certain deformation is generated, and when a train passes through, the penetrated prestressed bundles can resist the impact load of the train.
And a lacing hole for installing longitudinal lacing wires between the beam plates is reserved in the plate body, and a plurality of rail plate beams are connected together to form a long section or an all-line longitudinal connecting plate beam by installing the longitudinal lacing wires in the lacing hole. When one end of the rail plate beam is stressed, the other end of the rail plate beam is pulled by the longitudinal lacing wire, so that the rail plate beam cannot lower down and tilt upwards, and the overall stability of the rail can be enhanced. The invention can provide continuous support for the steel rail, is beneficial to smooth running of the train and prolongs the service life of the steel rail and the train.
Of course, the invention is capable of other embodiments and of being practiced in various modifications and alterations by those skilled in the art without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (9)
1. The longitudinal connecting plate girder structure is characterized by comprising a plate girder, wherein the plate girder comprises a plate body, longitudinal post-tensioning prestressed pore canals and lacing wire holes for installing longitudinal lacing wires between the plate bodies are reserved in the plate body, the longitudinal post-tensioning prestressed pore canals have camber, the top surface of the plate body is provided with a concave rail bearing groove for embedding steel rails, and the rail bearing grooves are parallel and spaced;
two ends of the plate body are provided with constraint notches matched with the limiting convex baffle tables, and the constraint notches vertically penetrate through the top surface and the bottom surface of the rail plate beam;
A plurality of rail plate beams are longitudinally and alternately paved, a limiting convex baffle is arranged between two adjacent rail plate beams, the limiting convex baffle is arranged in a constraint notch, the two adjacent rail plate beams are connected together through two longitudinal lacing wires between the two rail plate beams, and the longitudinal lacing wires between the two rail plate beams are arranged in lacing wire holes.
2. The longitudinal web girder construction according to claim 1, wherein: the plate body is a frame plate with a hollowed-out center, and the lacing wire holes penetrate through the hollowed-out portions and the end faces of the plate body.
3. The longitudinal web girder construction according to claim 1, wherein: the top surface of the plate body is concave to form the rail bearing groove, and the rail bearing groove longitudinally penetrates through the two end surfaces of the plate body.
4. A longitudinal web girder construction according to claim 1 or 3, wherein: at least two groups of longitudinal post-tensioning prestressed channels are arranged, and a group of longitudinal post-tensioning prestressed channels are respectively arranged below the two rail bearing grooves.
5. A longitudinal web girder construction according to claim 1,2 or 3, wherein: the number of the longitudinal post-tensioned prestressing pore passages is 4-6.
6. A longitudinal web girder construction according to claim 1 or 3, wherein: the side of the plate body is provided with an embedded hoisting sleeve and a third rail bracket fixing sleeve.
7. The longitudinal web girder construction according to claim 1, wherein: the constraint notch is U-shaped or semicircular.
8. The longitudinal web girder construction according to claim 1, wherein: two lacing wire holes are symmetrically arranged.
9. The method of making a longitudinal web beam structure according to any one of claims 1-8, wherein: comprises the steps of,
Step a, binding a reinforcement cage framework of a plate body, and incorporating a steel mould;
Step b, installing a lacing wire hole pore-forming PVC pipe between the end part of the longitudinal connecting plate girder steel mould and the inner steel mould, wherein the lacing wire hole pore-forming PVC pipe is firmly fixed, and the inner steel mould corresponds to the hollowed-out part on the plate body;
Installing a corrugated pipe and a liner pipe at the corresponding position of the post-tensioned prestressing duct, and forming an edge of the liner pipe and installing an embedded sleeve;
c, pouring concrete, pulling out the liner tube after the concrete is initially set, and continuing steam curing;
And d, demolding, hanging out and checking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910556441.2A CN110184914B (en) | 2019-06-25 | 2019-06-25 | Longitudinal connecting plate beam structure and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910556441.2A CN110184914B (en) | 2019-06-25 | 2019-06-25 | Longitudinal connecting plate beam structure and manufacturing method |
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| CN110184914A CN110184914A (en) | 2019-08-30 |
| CN110184914B true CN110184914B (en) | 2024-07-16 |
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| CN110184912B (en) * | 2019-06-04 | 2024-07-16 | 成都天府轨谷科技有限公司 | Rail plate beam structure system and production method |
| CN110616634A (en) * | 2019-10-24 | 2019-12-27 | 成都天府轨谷科技有限公司 | Embedded assembled continuous supporting rail plate beam structure and production method |
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