CN110804937A - Full-prefabricated assembled track structure on steel truss girder - Google Patents
Full-prefabricated assembled track structure on steel truss girder Download PDFInfo
- Publication number
- CN110804937A CN110804937A CN201911046690.3A CN201911046690A CN110804937A CN 110804937 A CN110804937 A CN 110804937A CN 201911046690 A CN201911046690 A CN 201911046690A CN 110804937 A CN110804937 A CN 110804937A
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- Prior art keywords
- plate
- sleeper
- steel truss
- truss girder
- steel
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
- E01B3/40—Slabs; Blocks; Pot sleepers; Fastening tie-rods to them
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- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a fully-prefabricated assembled track structure on a steel truss girder, which is arranged on the steel truss girder (1) and comprises a steel rail bearing mechanism and a fixed connecting mechanism; the steel rail bearing mechanism comprises a sleeper plate (3), the sleeper plate (3) is arranged at the top of the steel truss beam (1), sleeper plate mounting holes (15) are formed in two ends of the sleeper plate (3), and an isolation buffer base plate (2) is arranged on the bottom end face of the sleeper plate (3); the fixed connection mechanism comprises a hollow sleeve (4), an iron base plate (10) is arranged in the isolation buffer base plate preformed hole (13), and the top end face of the rail sleeper plate (3) is arranged at the top of the high-strength bolt (9). The fully-prefabricated assembled track structure can realize higher prefabrication degree so as to facilitate rapid and convenient field construction, and meanwhile, the prefabricated components used in the aspects of maintenance and repair have better convenience and reduce the working time required by maintenance and repair.
Description
Technical Field
The embodiment of the invention belongs to the technical field of railway track structures, and particularly relates to a fully-prefabricated assembled track structure on a steel truss girder.
Background
The steel truss structure is a main structure type commonly adopted by modern railway bridges, has the outstanding advantages of simple structure, convenient construction, strong bearing capacity and the like, and is widely applied to construction of ordinary speed railways, high-speed railways and intercity railways. At present, common rail structures of railway steel trusses at home and abroad comprise a wooden sleeper open deck rail, a ballast rail, a synthetic resin sleeper rail and a sleeper plate type rail.
The steel truss girder bridge of the traditional open bridge deck railway adopts a longitudinal and transverse girder system, steel rails are connected with sleepers through fastener spikes, and the sleepers are connected with steel girders through bolts, so that the steel truss girder bridge has the advantage of smaller self weight. However, the wooden sleeper spike buckling pressure is relatively small, so that the wooden sleeper spike buckling pressure-reducing device is only suitable for railways with the speed not higher than 120km/h generally, and the wooden sleeper is easy to decay, wear and crack, so that the service life of the structure is short.
The ballast track is arranged, for a high-speed railway steel truss cable-stayed bridge, a concrete combined beam bridge floor or an orthotropic plate steel bridge floor is usually adopted, a reinforced concrete ballast bearing groove is arranged on the bridge floor, the ballast track is laid in the groove, and the Wuhan Tianxing Zhongjiang river bridge is the track structure. Mature experiences of maintenance, repair and the like of the ballast track can be used for reference, deformation of the track can be conveniently adjusted, but the bridge deck is not easy to inspect and maintain as the bridge deck is covered by the ballast bearing grooves. In addition, the self weight of the ballast track is large, and is about 6.56 t/single line linear meter (including the weight of the ballast slot plate).
The synthetic resin sleeper track adopts the resin synthetic sleeper with better corrosion resistance, weather resistance and fatigue resistance to replace a wooden sleeper, so that the problem of the service life of the wooden sleeper is better solved, but the synthetic resin sleeper has overhigh manufacturing cost and is not suitable for large-scale laying application.
The plate-type track can improve the structural stability and durability of the track, reduce the workload of maintenance and repair, reduce the upper building height of the track and the second-stage dead load of the bridge, and reduce the construction cost of the main bridge. The way of laying the sleeper slab track on the traditional steel bridge deck is to connect the track structure and the bridge together by high-strength bolts. The patent CN208009169U discloses a prefabricated track plate on a steel truss girder bridge, and the patent CN208009169U discloses a plate-type ballastless track for a sleeved track circuit on the steel truss girder bridge. Steel truss girder upper plate formula ballastless track structure in the above-mentioned patent keeps apart through the concrete cushion between track board and the steel truss girder bridge floor, and the concrete cushion is pour in the site operation, and the construction progress is slower, and the maintenance is maintained inconveniently. In addition, no good isolation buffer measures exist between the track slab and the steel truss girder, which is not beneficial to the mutual adaptation of the deformation of the track slab and the steel truss girder and influences the safety and the stability of train operation and the structural stability of the steel truss girder bridge.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides the fully-prefabricated assembled track structure on the steel truss girder, which can realize higher prefabrication degree so as to facilitate rapid and convenient field construction, and meanwhile, the prefabricated components used in the maintenance aspect have better convenience, so that the working efficiency in maintenance can be effectively improved, and the working time required by maintenance is reduced.
In order to achieve the purpose, the invention provides a fully prefabricated assembly type track structure on a steel truss girder, which is arranged on the steel truss girder and comprises a steel rail bearing mechanism and a fixed connecting mechanism; wherein,
the steel rail bearing mechanism comprises a cuboid sleeper plate, the sleeper plate is arranged at the top of the steel truss girder, sleeper plate mounting holes are formed in two ends of the sleeper plate, the steel rail is arranged on the top end face of the sleeper plate, a rectangular sheet isolation buffer base plate is arranged on the bottom end face of the sleeper plate, and an isolation buffer base plate preformed hole is formed in the middle of the isolation buffer base plate;
the fixed connection mechanism comprises a hollow sleeve arranged in the sleeper plate mounting hole, an iron base plate is arranged in the isolation buffer base plate preformed hole, an iron base plate mounting hole is formed in the middle of the iron base plate, threads are arranged at the top of the high-strength bolt, the top of the high-strength bolt is arranged on the top end face of the sleeper plate, and a nut is arranged at the top of the high-strength bolt.
Further, the steel rail bearing mechanism further comprises a circular embedded sleeve arranged on the top end face of the sleeper plate.
Furthermore, the top end face of the isolation buffer cushion plate is provided with a small cylindrical protrusion.
Furthermore, one end of the nut is provided with a circular bolt washer, and one end of the nut is provided with a nut cover.
Further, the outer diameter of the sleeve is smaller than the diameter of the sleeper plate mounting hole, the height of the isolation buffer base plate is the same as that of the iron base plate, and the outer diameter of the iron base plate mounting hole is the same as that of the isolation buffer base plate preformed hole.
Further, filling resin is filled between the outer ring surface of the sleeve and the inner ring surface of the sleeper plate mounting hole.
Further, the tie plate, the sleeve, and the filling resin are prefabricated workpieces.
Further, the sleeper plate, the sleeve and the filling resin are prefabricated parts.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) the fully-prefabricated assembled track structure can realize higher prefabrication degree so as to facilitate rapid and convenient field construction, and meanwhile, the prefabricated components used in the aspects of maintenance and repair have better convenience, so that the working efficiency in the maintenance and repair process can be effectively improved, and the working time required by the maintenance and repair process can be reduced.
(2) The fully-prefabricated assembled track structure can realize better isolation and buffering between the sleeper slab and the steel trussed beam, thereby effectively adapting to the deformation between the sleeper slab and the steel trussed beam and ensuring the safety and stability of a vehicle-track-bridge system.
(3) According to the fully-prefabricated assembled track structure, the vertical limiting effect on the sleeper slab is realized through the fixing structure between the sleeve and the steel truss girder, and the sleeper slab can compress the isolation buffer base plate downwards under the load of a train; after the train load effect, the sleeper slab upwards restores the normal position, and the stable geometric position of the track structure is kept under the fixed structure of the sleeve and the steel truss girder, so that the safety and the stability of the line are improved.
Drawings
FIG. 1 is an overall schematic view of a fully prefabricated assembled track structure on a steel truss beam according to an embodiment of the invention;
FIG. 2 is an exploded view of a fully prefabricated track structure on a steel truss beam according to an embodiment of the present invention;
FIG. 3 is an overall sectional view of a fully prefabricated track structure on a steel truss according to an embodiment of the present invention;
FIG. 4 is an overall side view of a fully prefabricated track structure on a steel truss according to an embodiment of the present invention;
FIG. 5 is an exploded cross-sectional view of a fully prefabricated track structure on a steel truss according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a steel truss girder in a fully prefabricated assembled track structure on the steel truss girder according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a sleeve in a fully prefabricated assembled track structure on a steel truss according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of an iron tie plate in a fully prefabricated assembled track structure on a steel truss girder according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an isolation bumper plate structure in a fully prefabricated assembled track structure on a steel truss according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a sleeper slab in a fully prefabricated assembled track structure on a steel truss beam according to the embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-steel truss girder, 2-isolation buffer base plate, 3-sleeper plate, 4-sleeve, 5-bolt washer, 6-nut, 7-nut cover, 8-steel rail, 9-high-strength bolt, 10-iron base plate, 11-filling resin, 12-steel truss girder preformed hole, 13-isolation buffer base plate preformed hole, 14-embedded sleeve, 15-sleeper plate mounting hole and 16-iron base plate mounting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, 2 and 3, the present invention provides a fully prefabricated assembly type track structure on a steel truss, the assembly type track structure is arranged on the steel truss 1, and the assembly type track structure comprises a fixed connection mechanism and a steel rail bearing mechanism. The steel rail bearing mechanism is arranged at one end of the steel truss girder 1, the steel rail bearing mechanism is fixedly arranged on the steel truss girder 1 through the fixed connecting mechanism, and meanwhile, the steel rail bearing mechanism is provided with the steel rail 8, so that reliable support is provided for normal operation of a train. This assembled track structure can realize higher prefabricated degree, has better convenience in the aspect of construction and maintenance simultaneously. Meanwhile, better isolation and buffering can be realized between the sleeper slab and the steel truss girder, the deformation between the sleeper slab and the steel truss girder is adapted, and the safety and the stability of a vehicle-track-bridge system are ensured.
As shown in fig. 1 to 6, the steel girder 1 is a main supporting member of the fabricated rail structure, and is symmetrically disposed on the bottom end surface of the tie plate 3, and the steel girder 1 transfers the load received by the fabricated rail structure to the substructure. The top structure of the steel truss girder 1 is a truss girder with a T-shaped cross section, and a steel truss girder preformed hole 12 for installing a fixed connection mechanism is arranged on one side of the T-shaped inward of the top of the steel truss girder so as to fixedly connect a steel rail bearing mechanism with the steel truss girder 1.
As shown in fig. 1 to 5, 9 and 10, the rail bearing mechanism includes an isolation cushion plate 2, a rail sleeper plate 3, a rail 8, an isolation cushion plate prepared hole 13, a pre-buried sleeve 14 and a rail sleeper plate mounting hole 15. The sleeper plate 3 is the main component of rail bearing mechanism, and this sleeper plate 3 is whole for the cuboid form structure of level locating steel longeron 1 top, and sleeper plate 3 passes through fixed connection mechanism and fixes on 1 top end face of steel longeron, and accessible this sleeper plate 3 transmits the load of train to steel longeron 1 when the train passes through on, the normal operating of guarantee train. The two sides of the cuboid structure of the sleeper plate 3 are symmetrically provided with a sleeper plate mounting hole 15, and the whole sleeper plate mounting hole 15 is a circular through hole and is used for mounting a fixed connecting mechanism. Simultaneously, it has eight embedded sleeves 14 to distribute in the middle part position of this 3 cuboid structures of pillow board, and four symmetries of this 14 embedded sleeves of every group are located on the top face of pillow board 3 to set up rail 8's installation fastener, ensure rail 8's normal reliable installation, improve this assembled track structure's security and reliability. On rail 8 symmetry located this sleeper slab 3's top, through fixed fastener with I-shaped rail 8 and sleeper slab 3 fixed connection, transmit sleeper slab 3 with the train load, ensure the steady operation of train. Keep apart 2 whole rectangle pieces for being rich in elasticity, it is located between 1 top surface of steel truss and the 3 bottom faces of sleeper slab, for this assembled track structure provides the effect that the interval played the buffering simultaneously, can absorb the vibration that produces when partly train operation, evenly distributed has the arch of small circle column on the top of this rectangle piece, the further cushioning performance who improves this rectangle piece. Simultaneously, select for use this isolation cushion plate 2 can also adapt to the deformation between sleeper slab 3 and the steel longeron 1, improves this assembled track structure's security and reliability. Isolation buffer plate preformed holes 13 are symmetrically arranged at two ends of the isolation buffer plate 2, the isolation buffer plate preformed holes 13 are integrally circular through holes, the size of the isolation buffer plate preformed holes is larger than that of steel truss beam preformed holes 12 reserved on the top end face of the steel truss beam 1, and the isolation buffer plate preformed holes 13 are used for installing iron base plates 10.
Further, as shown in fig. 1 to 5, 7 and 8, the fixed connection mechanism includes a bushing 4, a bolt washer 5, a nut 6, a nut cover 7, a high-strength bolt 9, an iron shim plate 10, a filling resin 11 and an iron shim plate mounting hole 16. Wherein, sleeve pipe 4 is for locating the inside hollow cylinder structure of sleeper board mounting hole 15, and the external diameter of this hollow cylinder structure is less than the diameter of sleeper board mounting hole 15, simultaneously, is equipped with the rectangular plate that the middle part was equipped with the round hole on the top of this hollow cylinder structure to the fixed mounting of high strength bolt 9 is convenient for. After the sleeve 4 is placed in the sleeper plate mounting hole 15, the filling resin 11 is filled in a gap formed by the sleeve 4 and the sleeper plate mounting hole 15, the filling resin 11 can effectively absorb transverse and longitudinal vibration generated by a train, the safety and the reliability of the fabricated rail structure are further improved, the mounting process of the sleeper plate 3, the sleeve 4 and the filling resin 11 can be prefabricated and completed in a factory, the construction quality is improved, materials are saved, the construction and maintenance procedures are simplified, and the economy and the reliability of the fabricated rail structure are improved. The whole ring shape structure that is equipped with iron tie plate mounting hole 16 for the middle part of iron tie plate 10, inside this iron tie plate 10 located isolation cushion plate preformed hole 13, the external diameter of ring shape structure is the same with the diameter of isolating cushion plate preformed hole 13, ensures iron tie plate 10 and keeps apart the top face of cushion plate 2 and keep in same horizontal plane after the installation is accomplished, and simultaneously, iron tie plate mounting hole 16 is convenient for high strength bolt 9's fixed mounting. After the whole load inverted assembly type track structure descends due to train running, the iron backing plate 10 provides support for the sleeve 4, the sleeper plate 3 is upwards restored to the initial position after the train runs, and the geometric shape and position of the sleeper plate 3 can be kept due to the limiting effect of the sleeve 4. In addition, the high-strength bolt 9 and the nut 6 are main fastening components of a fixed connection mechanism, the high-strength bolt 9 is integrally of a cylindrical rod-shaped structure, threads are arranged at the top of the cylindrical rod-shaped structure, a circular truncated cone is arranged on the bottom end face of the cylindrical rod-shaped structure, the high-strength bolt 9 sequentially penetrates through the sleeper plate mounting hole 15, the isolation buffer base plate preformed hole 13, the iron base plate mounting hole 16 and the sleeve 4 to reach the top end face of the sleeper plate 3, then the components of the assembly type track structure are fixedly pressed together by screwing the nut 6, and meanwhile, bolt washers 5 are further arranged on the bottom end face of the nut 6 and the top end face of the sleeper plate 3 to prevent the nut 6 from loosening; and the nut cover 7 is arranged at the top of the nut 6, so that protection is provided for the nut 6 and the high-strength bolt 9, the nut 6 and the high-strength bolt 9 are prevented from being corroded, potential safety hazards are caused, and the safety and the reliability of the assembly type track structure are further improved.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A fully-prefabricated assembly type track structure on a steel truss girder is arranged on the steel truss girder (1) and is characterized by comprising a steel rail bearing mechanism and a fixed connecting mechanism; wherein,
the steel rail bearing mechanism comprises a cuboid sleeper plate (3), the sleeper plate (3) is arranged at the top of the steel truss beam (1), sleeper plate mounting holes (15) are formed in two ends of the sleeper plate (3), a steel rail (8) is arranged on the top end face of the sleeper plate (3), a rectangular sheet-shaped isolation buffer base plate (2) is arranged on the bottom end face of the sleeper plate (3), and an isolation buffer base plate reserved hole (13) is formed in the middle of the isolation buffer base plate (2);
fixed connection mechanism is including locating inside cavity sleeve pipe (4) of sleeper slab mounting hole (15), iron tie plate (10) are located keep apart inside buffer backing plate preformed hole (13), iron tie plate (10) middle part is equipped with iron tie plate mounting hole (16), and high strength bolt (9) top is equipped with the screw thread, sleeper slab (3) top end face is located at high strength bolt (9) top nut (6) are equipped with at high strength bolt (9) top.
2. The fully prefabricated rail structure on a steel truss girder according to claim 1, wherein the rail bearing mechanism further comprises a circular embedded sleeve (14) arranged on the top end face of the sleeper plate (3).
3. The fully prefabricated assembled track structure on steel truss girder according to claim 1 or 2, wherein the top end face of the isolation buffer shim plate (2) is provided with a small cylindrical protrusion.
4. The fully prefabricated assembled track structure on steel truss girder according to claim 1, wherein one end of the nut (6) is provided with a circular bolt washer (5), and one end of the nut (6) is provided with a nut cover (7).
5. The fully prefabricated assembled track structure on steel truss girder according to claim 1, wherein the outer diameter of the sleeve (4) is smaller than the diameter of the sleeper slab mounting hole (15), the height of the isolation buffer plate (2) is the same as the height of the iron plate (10), and the outer diameter of the iron plate mounting hole (16) is the same as the diameter of the isolation buffer plate preformed hole (13).
6. The fully prefabricated rail structure on a steel truss girder according to claim 5, wherein a filling resin (11) is filled between an outer circumferential surface of the sleeve (4) and an inner circumferential surface of the tie plate mounting hole (15).
7. A fully prefabricated rail structure on a steel truss girder according to claim 6, wherein the sleeper slab (3), the sleeve (4) and the filling resin (11) are prefabricated workpieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046690.3A CN110804937A (en) | 2019-10-30 | 2019-10-30 | Full-prefabricated assembled track structure on steel truss girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046690.3A CN110804937A (en) | 2019-10-30 | 2019-10-30 | Full-prefabricated assembled track structure on steel truss girder |
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| Publication Number | Publication Date |
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| CN110804937A true CN110804937A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911046690.3A Pending CN110804937A (en) | 2019-10-30 | 2019-10-30 | Full-prefabricated assembled track structure on steel truss girder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254798A (en) * | 2020-03-06 | 2020-06-09 | 江苏宝力重工科技有限公司 | A rail transit steel structure bridge |
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| CN207621161U (en) * | 2017-11-29 | 2018-07-17 | 山东临工工程机械有限公司 | Screw locking structure applied to rubber pad vibration damping |
| CN211285229U (en) * | 2019-10-30 | 2020-08-18 | 中铁第四勘察设计院集团有限公司 | Full-prefabricated assembled track structure on steel truss girder |
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| CN202865704U (en) * | 2012-05-16 | 2013-04-10 | 中铁二院工程集团有限责任公司 | Elastic separation type fastener for medium-low speed magnetic suspension rail |
| CN202830761U (en) * | 2012-08-29 | 2013-03-27 | 中铁二院工程集团有限责任公司 | Railway steel truss girder bridge ballastless track laying structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111254798A (en) * | 2020-03-06 | 2020-06-09 | 江苏宝力重工科技有限公司 | A rail transit steel structure bridge |
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