CN210826938U - Track structure suitable for urban rail transit construction is supporting 8 types track board - Google Patents
Track structure suitable for urban rail transit construction is supporting 8 types track board Download PDFInfo
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- CN210826938U CN210826938U CN201920237578.7U CN201920237578U CN210826938U CN 210826938 U CN210826938 U CN 210826938U CN 201920237578 U CN201920237578 U CN 201920237578U CN 210826938 U CN210826938 U CN 210826938U
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Abstract
The utility model discloses a track structure suitable for supporting 8 style of calligraphy track boards of urban rail traffic construction. Different track structures are adopted on the road surfaces of different sections: when the roadbed section, the tunnel section of the rectangular pavement and the tunnel section of the circular pavement adopt different track structures; in the first type, the limiting structure protrudes out of the reinforced concrete base and is positioned in the convex tenon structure in the notch grooves at the edges of the two ends of the 8-shaped track plate; in the second type, the limiting structure protrudes out of the reinforced concrete base and is positioned in the tenon structures in the notch grooves at the four corners of the 8-shaped track plate; in the third type, the limiting structure protrudes out of the reinforced concrete base and is arranged on the convex tenon structures in the notch grooves at the edges of the two ends of the 8-shaped track plate. The utility model discloses track structure is reliable, the interface is complete, the suitability is strong, can realize the batch production prefabrication, effective control track structure quality, guarantee construction high efficiency, high accuracy, high quality and maintenance convenience for the sensitive point protection district section of no damping district section or different damping demands.
Description
Technical Field
The utility model belongs to the technical field of the ballastless track, concretely relates to track structure suitable for supporting 8 style of calligraphy track boards of urban rail traffic construction.
Background
At present, the urban rail transit ballast bed structure in China mostly adopts cast-in-place concrete to pour, however, the prefabricated track slab is gradually applied to urban rail transit project construction because of the characteristics of factory prefabrication, controllable quality of the prominent ballast bed structure, high construction efficiency, high precision, high quality, convenience in maintenance and repair and the like, and is particularly applied to the integral ballast bed structure with high-performance vibration reduction requirement at first. Therefore, the development of the novel prefabricated track structure engineering is significant.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the background art, the utility model provides a track structure suitable for supporting 8 style of calligraphy track boards of urban rail transit construction, applicable in each type train load of rail transit, curve radius is not less than 300m, under direct current power supply or the ac power supply technical condition, the overhead line, the ground wire, the underground line is general, medium damping or high damping section track structure lay the demand, it is sparse to have the railway roadbed simultaneously concurrently, the track structure hoist and mount, overhaul the jacking, longitudinal connection, functions such as apron support installation.
In order to solve the technical problem, the utility model discloses the technical scheme who takes as follows:
different track structures are adopted on the road surfaces of different sections:
when in a roadbed section, a first track structure is adopted; the first track structure comprises an 8-shaped track plate and a reinforced concrete base, wherein steel rails are laid on the 8-shaped track plate, the 8-shaped track plate is arranged on the reinforced concrete base, limiting structures for positioning the 8-shaped track plate are arranged on two sides of the reinforced concrete base, self-compacting concrete/self-leveling mortar is arranged between the bottom surface of the 8-shaped track plate and the reinforced concrete base, and a limiting cushion layer is arranged between the side surface of the 8-shaped track plate and the limiting structures; longitudinal ditches are arranged at two sides of the bottom of the reinforced concrete base, a plurality of transverse drain holes are arranged at the bottom of the reinforced concrete base, the transverse drain holes are uniformly distributed at intervals along the laying direction of the steel rail, each transverse drain hole is arranged perpendicular to the laying direction of the steel rail and penetrates through two sides of the reinforced concrete base, and two ends of each transverse drain hole are communicated with the longitudinal ditches at the two sides of the reinforced concrete base; the 8-shaped track plate mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate along the laying direction of the steel rail, and notch grooves are formed in the edges and four corners of two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; 8 style of calligraphy track board is equipped with buried sleeve in the outside side and rectangle lead to groove wall department, the rectangle leads to the inslot and installs the heart apron of saying through the support connection spare, a support connection spare is all installed to the both sides groove lateral wall that 8 style of calligraphy track board rectangle leads to the groove, every support connection spare includes angle steel and connecting bolt, the angle steel is fixed in the groove lateral wall that 8 style of calligraphy track board rectangle leads to the groove through connecting bolt, the angle steel cross-section is the type of falling L and arranges, it establishes on the support connection spare of both sides to say the.
When the tunnel section of the rectangular road surface is used, a second track structure is adopted; the second track structure comprises an 8-shaped track plate and a reinforced concrete base, steel rails are laid on the 8-shaped track plate, the 8-shaped track plate is arranged on the reinforced concrete base, limiting structures used for positioning the 8-shaped track plate are arranged on two sides of the reinforced concrete base, self-compacting concrete/self-leveling mortar is arranged between the bottom surface of the 8-shaped track plate and the reinforced concrete base, and a limiting cushion layer is arranged between the side surface of the 8-shaped track plate and the limiting structures; longitudinal ditches are arranged on the two sides of the bottom of the reinforced concrete base, a central ditch is arranged in the center of the bottom of the reinforced concrete base along the laying direction of the steel rail and communicated with the rectangular through groove, a catch ditch is arranged at the bottom of the reinforced concrete base below the rectangular through groove and is perpendicular to the laying direction of the steel rail and penetrates through the two sides of the reinforced concrete base, and the two ends of the catch ditch penetrate through the reinforced concrete base to communicate the longitudinal ditches with the central ditch; the 8-shaped track plate mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate along the laying direction of the steel rail, and two notch grooves are formed in two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; 8 style of calligraphy track board is equipped with buried sleeve in the groove cell wall department is led to outside side and rectangle, the rectangle leads to the inslot and installs the heart apron of saying through the support connection spare, a support connection spare is all installed to the both sides groove lateral wall that 8 style of calligraphy track board rectangle leads to the groove, every support connection spare includes angle steel and connecting bolt, the angle steel is fixed in the groove lateral wall that 8 style of calligraphy track board rectangle leads to the groove through connecting bolt, the angle steel cross-section is the type of falling L and arranges, it establishes on the support connection spare of both sides to.
When the tunnel section on the circular road surface is used, a third track structure is adopted; the third track structure comprises an 8-shaped track plate and a reinforced concrete base, steel rails are laid on the 8-shaped track plate, the 8-shaped track plate is arranged on the reinforced concrete base, limiting structures for positioning the 8-shaped track plate are arranged on two sides of the reinforced concrete base, self-compacting concrete/self-leveling mortar and a damping pad are arranged between the bottom surface of the 8-shaped track plate and the reinforced concrete base from top to bottom, and a limiting cushion layer is arranged between the side surface of the 8-shaped track plate and the limiting structures; longitudinal ditches are arranged at the two lateral sides of the bottom of the reinforced concrete base; the 8-shaped track plate mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate along the laying direction of the steel rail, and two notch grooves are formed in two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; the rectangle leads to the inslot and installs the balancing weight, and the rectangle leads to the inslot and installs the balancing weight through supporting connection spare, and a supporting connection spare is all installed to the both sides groove lateral wall that the groove was led to 8 style of calligraphy track board rectangle, and every supporting connection spare includes angle steel and connecting bolt, and the angle steel is fixed in the groove lateral wall that 8 style of calligraphy track board rectangle leads to the groove through connecting bolt, and the angle steel cross-section is the type of falling L and arranges, and the balancing weight erects on the supporting connection spare of.
Among the first kind of track structure, limit structure protrusion reinforced concrete base just is located the protruding falcon structure in the breach groove at 8 style of calligraphy track board's both ends edges.
Among the second kind of track structure, limit structure protrusion reinforced concrete base just is located the protruding falcon structure in the breach groove in the four corners of 8 style of calligraphy track boards.
In the third type track structure, the limiting structure protrudes out of the reinforced concrete base and is arranged in the convex tenon structures in the notch grooves at the edges of the two ends of the 8-shaped track plate.
The 8-shaped track plate is provided with two rows of parallel rail bearing platform vibration attenuation fasteners, each row of rail bearing platforms are formed by a plurality of rail bearing platforms which are uniformly distributed at intervals along the laying direction of the steel rails and are fixed on the 8-shaped track plate, and the two steel rails are laid on the two rows of rail bearing platforms through the vibration attenuation fasteners.
The rail plate reinforcing steel adopts a prestressed reinforcement system or a non-prestressed reinforcement net.
The prestressed reinforcement system mainly comprises a plurality of parallel reinforcing steel bars arranged inside the 8-shaped track plate, and each reinforcing steel bar is arranged inside the 8-shaped track plate in a penetrating mode along the steel rail laying direction.
The non-prestressed reinforcement net mainly comprises two groups of parallel reinforcement groups arranged inside the 8-shaped track plate, each group of parallel reinforcement groups is composed of a plurality of reinforcements which are arranged inside the 8-shaped track plate in parallel and do not penetrate through the 8-shaped track plate, and the two groups of parallel reinforcement groups are arranged in a vertical and crossed mode.
The channel core cover plate is erected on the angle steel of the supporting and connecting piece on two sides, and the thickness of the channel core cover plate is the same as the vertical distance from the top surface of the angle steel to the upper edge of the rectangular through groove.
The counterweight block is erected on the angle steel of the supporting connecting piece on two sides and extends downwards to the lower edge of the rectangular through groove, and the thickness of the counterweight block is the same as that of the rectangular through groove.
The utility model has the advantages that:
the utility model discloses supporting prefabricated track slab structure of batch production of adoption, effective control track structure precision and quality can ensure construction high efficiency, high accuracy, high quality and maintenance convenience, can be applicable to different civil engineering basic condition and track damping demand section and lay the demand, have that the structure is reliable, the interface is equipped with completely, the drainage scheme is nimble, the suitability is strong etc. is showing characteristics.
Drawings
Fig. 1(a) is a plan view of a roadbed section track structure according to embodiment 1 of the present invention.
Fig. 1(b) is a vertical sectional view of a roadbed section rail structure according to embodiment 1 of the present invention.
Fig. 1(c) is a cross-sectional view of a roadbed section track structure according to embodiment 1 of the present invention.
Fig. 2(a) is a plan view of a track structure of a rectangular tunnel section according to embodiment 2 of the present invention.
Fig. 2(b) is a vertical sectional view of the rail structure of the rectangular tunnel section according to embodiment 2 of the present invention.
Fig. 2(c) is a cross-sectional view of the track structure of the rectangular tunnel section according to embodiment 2 of the present invention.
Fig. 3(a) is a plan view of a circular tunnel segment track structure according to embodiment 3 of the present invention.
Fig. 3(b) is a vertical sectional view of a circular tunnel section track structure according to embodiment 3 of the present invention.
Fig. 3(c) is a cross-sectional view of a circular tunnel segment track structure according to embodiment 3 of the present invention.
Fig. 4 is a structural diagram of the 8-shaped track slab of the present invention.
In the figure, 2-steel rail, 4-8-shaped track plate, 5-self-compacting concrete/self-leveling mortar, 6-vibration damping pad, 7-base, 8-limiting structure, 9-limiting cushion layer, 10-core cover plate, 11-balancing weight, 12-transverse drain hole, 13-longitudinal ditch, 14-catch ditch, 15-central ditch, 16-side wall and 17-segment.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
When in a roadbed section, a first track structure is adopted;
as shown in fig. 1, the first track structure includes an 8-shaped track plate 4 and a reinforced concrete base 7, a steel rail 2 is laid on the 8-shaped track plate 4, the 8-shaped track plate 4 is placed on the reinforced concrete base 7, and a limiting structure 8 for positioning the 8-shaped track plate 4 is arranged on two sides of the reinforced concrete base 7. As shown in fig. 1(b), a self-compacting concrete/self-leveling mortar 5 is arranged between the bottom surface of the 8-shaped track plate 4 and the reinforced concrete base 7, and a limit cushion 9 is arranged between the side surface of the 8-shaped track plate 4 and the limit structure 8.
As shown in fig. 1(c), longitudinal water ditches 13 are arranged on two sides of the bottom of the reinforced concrete base 7, a plurality of transverse drain holes 12 are arranged at the bottom of the reinforced concrete base 7, the transverse drain holes 12 are uniformly distributed at intervals along the laying direction of the steel rail 2, each transverse drain hole 12 is arranged perpendicular to the laying direction of the steel rail 2 and penetrates through two sides of the reinforced concrete base 7, and two ends of each transverse drain hole 12 are communicated with the longitudinal water ditches 13 on two sides of the reinforced concrete base 7.
The 8-shaped track slab 4 is a main core of a prefabricated track slab and is a main structure for bearing and transferring the load of an operating train. As shown in fig. 1(a) and 4 (b), the 8-shaped track plate 4 is mainly composed of poured concrete and track plate reinforcing bars arranged inside the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate 4 along the laying direction of the steel rail 2, and two notched grooves are formed in the edges of two ends and four corners of the 8-shaped track plate, so that a structure in a shape like a Chinese character 'mu' or 'ri' is formed.
8 style of calligraphy track board 4 is equipped with buried sleeve in groove wall department is led to outside side and rectangle, as shown in (b) in fig. 1, install in the groove of rectangle and say core board 10, install through the supporting connection spare in the groove of rectangle and say core board 10, a supporting connection spare is all installed to the both sides groove lateral wall that 8 style of calligraphy track board 4 rectangle led to the groove, the supporting connection spare symmetrical arrangement of both sides, every supporting connection spare includes angle steel 20 and connecting bolt 21, angle steel 20 is fixed in the groove lateral wall that 8 style of calligraphy track board 4 rectangle led to the groove through connecting bolt 21, angle steel 20 cross-section is the type of falling L and arranges, it erects on the supporting connection spare of both sides to say core board 10.
In the concrete implementation, the center cover plate 10 is composed of three plates, the three center cover plates 10 are erected on the angle steels 20 of the supporting and connecting pieces on the two sides, the thickness of the center cover plate 10 is the same as the vertical distance from the top surfaces of the angle steels 20 to the upper edge of the rectangular through groove, the center cover plate is a light cover plate laid in the range of the 8-shaped track plate 4 frame, and the requirement of track bed evacuation is mainly met.
In the first kind of track structure, limit structure 8 protrusion reinforced concrete base 7 just is located the protruding falcon structure in the breach groove of 8 style of calligraphy track board 4 both ends edges.
The first track structure is characterized in that a reinforced concrete base, a track center boss limiting and transverse dispersed drainage track structure is adopted for the track structure type selection characteristics of a roadbed section, the structure can adapt to partial settlement deformation of a roadbed, the limiting structure is convenient to implement and high in reliability, and a drainage channel is matched with a roadbed surface drainage system consistently.
Example 2
When the tunnel is in a rectangular tunnel section, a second track structure is adopted;
as shown in fig. 2, the second track structure includes 8-shaped track plates 4 and a reinforced concrete base 7, steel rails 2 are laid on the 8-shaped track plates 4, the 8-shaped track plates 4 are arranged on the reinforced concrete base 7, and limit structures 8 for positioning the 8-shaped track plates 4 are arranged on two sides of the reinforced concrete base 7, as shown in (b) of fig. 2, self-compacting concrete/self-leveling mortar 5 is arranged between the bottom surfaces of the 8-shaped track plates 4 and the reinforced concrete base 7, and limit cushions 9 are arranged between the side surfaces of the 8-shaped track plates 4 and the limit structures 8.
As shown in fig. 2(a) and 2(c), longitudinal ditches 13 are arranged on two sides of the bottom of the reinforced concrete base 7, the longitudinal ditches 13 are located between the side wall 16 and the side wall of the reinforced concrete base 7, a central ditch 15 is arranged in the center of the bottom of the reinforced concrete base 7 along the laying direction of the steel rail 2, the central ditch 15 is communicated with the rectangular through groove, a catch ditch 14 is arranged at the bottom of the reinforced concrete base 7 below the rectangular through groove, the catch ditch 14 is arranged perpendicular to the laying direction of the steel rail 2 and penetrates through two sides of the reinforced concrete base 7, and two ends of the catch ditch 14 penetrate through the reinforced concrete base 7 to communicate the longitudinal ditches 13 with the central ditch 15.
The 8-shaped track slab 4 is a main core of a prefabricated track slab and is a main structure for bearing and transferring the load of an operating train. As shown in fig. 2(a) and 4 (b), the 8-shaped track plate 4 is mainly composed of poured concrete and track plate reinforcing bars arranged inside the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate 4 along the laying direction of the steel rail 2, and two notched grooves are formed at two ends of the 8-shaped track plate respectively to form a structure in a shape like a Chinese character 'mu' or a Chinese character 'ri'.
8 style of calligraphy track board 4 is equipped with buried sleeve in groove wall department is led to outside side and rectangle, as shown in (b) in fig. 2, install in the groove of rectangle and say core board 10, install through the supporting connection spare in the groove of rectangle and say core board 10, a supporting connection spare is all installed to the both sides groove lateral wall that 8 style of calligraphy track board 4 rectangle led to the groove, the supporting connection spare symmetrical arrangement of both sides, every supporting connection spare includes angle steel 20 and connecting bolt 21, angle steel 20 is fixed in the groove lateral wall that 8 style of calligraphy track board 4 rectangle led to the groove through connecting bolt 21, angle steel 20 cross-section is the type of falling L and arranges, it erects on the supporting connection spare of both sides to say core board 10.
In the concrete implementation, the center cover plate 10 is composed of three plates, the three center cover plates 10 are erected on the angle steels 20 of the supporting and connecting pieces on the two sides, the thickness of the center cover plate 10 is the same as the vertical distance from the top surfaces of the angle steels 20 to the upper edge of the rectangular through groove, the center cover plate is a light cover plate laid in the range of the 8-shaped track plate 4 frame, and the requirement of track bed evacuation is mainly met.
In the second kind of track structure, limit structure 8 protrusion reinforced concrete base 7 just is located the protruding falcon structure in the breach groove in the four corners of 8 style of calligraphy track board 4.
The second track structure is characterized in that a track structure provided with a reinforced concrete base, a road center or a side boss for limiting, and two sides or a center for draining water is adopted for the structural characteristics of the rectangular tunnel section, the structure is matched with the rectangular tunnel structure consistently, the limiting structure is convenient to implement, the reliability is high, the drainage channel is flexible to select, and water flow is smooth.
Example 3
When the circular tunnel section is used, a third track structure is adopted;
as shown in fig. 3, the third track structure includes 8-shaped track plates 4 and a reinforced concrete base 7, rails 2 are laid on the 8-shaped track plates 4, the 8-shaped track plates 4 are arranged on the reinforced concrete base 7, and limit structures 8 for positioning the 8-shaped track plates 4 are arranged on two sides of the reinforced concrete base 7, as shown in (b) of fig. 3, self-compacting concrete/self-leveling mortar 5 and a damping pad 6 are arranged between the bottom surfaces of the 8-shaped track plates 4 and the reinforced concrete base 7 from top to bottom, and a limit cushion layer 9 is arranged between the side surfaces of the 8-shaped track plates 4 and the limit structures 8
As shown in fig. 3(c), longitudinal ditches 13 are arranged on two lateral sides of the bottom of the reinforced concrete base 7, and the longitudinal ditches 13 are located between the duct piece 17 and the side wall of the reinforced concrete base 7.
The 8-shaped track slab 4 is a main core of a prefabricated track slab and is a main structure for bearing and transferring the load of an operating train. As shown in fig. 3(a) and 4 (b), the 8-shaped track plate 4 is mainly composed of poured concrete and track plate reinforcing bars arranged inside the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate 4 along the laying direction of the steel rail 2, and two notched grooves are formed at two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or a Chinese character 'ri'.
8 style of calligraphy track board 4 is equipped with buried sleeve in groove wall department is led to outside side and rectangle, as shown in (b) in fig. 3, the rectangle leads to the inslot and installs balancing weight 11 through the supporting connection spare, a supporting connection spare is all installed to the both sides groove lateral wall that the groove is led to 8 style of calligraphy track board 4 rectangles, the supporting connection spare symmetrical arrangement of both sides, every supporting connection spare includes angle steel 20 and connecting bolt 21, angle steel 20 is fixed in the groove lateral wall that 8 style of calligraphy track board 4 rectangles lead to the groove through connecting bolt 21, angle steel 20 cross-sections are the type of falling L and arrange, balancing weight 11 erects on the supporting.
In the concrete implementation, the balancing weight 11 is composed of three plates, the three balancing weights 11 are erected on the angle steel 20 of the supporting connecting piece on the two sides and extend downwards to the lower edge of the rectangular through groove, the thickness of the balancing weight 11 is the same as that of the rectangular through groove, the balancing weight 11 is a heavy cover plate laid in the range of the frame 4 of the 8-shaped track plate, and the requirements of vibration reduction track structure balancing weight and track bed evacuation are mainly met.
In the third track structure, the limiting structure 8 protrudes out of the reinforced concrete base 7 and is located in the tenon structures in the notch grooves at the edges of the two ends of the 8-shaped track plate 4.
The third track structure is characterized in that a track structure provided with a reinforced concrete base, a road center or a side boss for limiting, and two sides or a center for draining water is adopted for the structural characteristics of the circular tunnel section, the structure is matched with the circular tunnel structure consistently, the limiting structure is convenient to implement, the reliability is high, the drainage channel is flexible to select, and water flow is smooth.
The utility model discloses adopt different track structural style to different civil engineering structure bases, can effectively be applicable to different civil engineering structures, be suitable for all kinds of civil engineering structure interface implementation conditions.
In the above embodiments, two rows of parallel rail bearing platform vibration-damping fasteners are arranged on the 8-shaped rail plate 4, each row of rail bearing platform is formed by uniformly arranging and fixing a plurality of rail bearing platforms on the 8-shaped rail plate 4 at intervals along the laying direction of the rails, and the two rails 2 are laid on the two rows of rail bearing platforms through the vibration-damping fasteners.
In the above embodiments, the rail plate reinforcing bars are prestressed reinforcement systems 3 or non-prestressed reinforcement nets 18.
Prestressed reinforcement system 3 mainly comprises the many parallel reinforcing bars that set up in 8 style of calligraphy track board 4 inside, and every reinforcing bar runs through in 8 style of calligraphy track board 4 along 2 laying directions of rail and arranges, and every reinforcing bar both ends tip all extends to 8 style of calligraphy track board 4 borders promptly.
The non-prestressed reinforcement net 18 is mainly composed of two groups of parallel reinforcement sets arranged inside the 8-shaped track plate 4, each group of parallel reinforcement sets is composed of a plurality of reinforcements which are arranged inside the 8-shaped track plate 4 in parallel but do not penetrate through the 8-shaped track plate 4, and the two groups of parallel reinforcement sets are arranged in a vertical and crossed mode.
The 8-shaped track plate 4 is a main structure of a prefabricated track plate, is a main structure for bearing and transmitting the load of an operating train, is in a shape of a Chinese character 'mu' or a Chinese character 'ri', is clear in structural stress, simple and light in weight and diversified in limiting function.
The 8-shaped track slab 4 adopts a prefabricated reinforced concrete structure, adopts a prestressed or non-prestressed reinforced concrete structural system and is reasonably selected according to the structural design requirements. The rail plate reinforcement scheme is that the 8-shaped rail plate is suitable for various load trains and different power supply system guarantee factors.
Non-prestressed reinforcement net drainage area of track slab reinforcement scheme is not less than 4000mm2The steel bar assembly comprises a transverse drainage steel bar with the d being 16mm, and a longitudinal through steel bar with the d being 16mm, and each project can be properly adjusted and combined according to specific interface requirements. Under the direct current supply system, a transverse drainage steel bar connection and drainage terminal with d being 16mm is selected, and under the alternating current supply system, a longitudinal through steel bar connection and connection terminal with d being 16mm is selected.
The rail bearing platform is used as a prefabricated part of a flat slope or a bottom slope with a rail and is a fastener mounting platform prefabricated on the top surface of an 8-shaped rail plate, the effective mounting space of the rail bearing platform is not smaller than 380mm × 240mm, the rail bearing platform can meet the mounting requirements of fasteners with different nail hole sizes of × 90mm/240mm × 100mm and the like, the height of the rail bearing platform can meet the assembly condition of the fasteners with the mounting height of not smaller than 40mm, the rail bearing platform in a specific project needs to be positioned and shaped according to steel rail type selection, rail gauge, sleeper laying standards, fastener types and the like, and the nail hole spacing, the nail hole positions and the prefabricated height of the rail bearing platform are matched with the fastener type selection.
The concrete implementation can always comprise a plurality of 8-shaped track plates 4, and the 8-shaped track plates 4 are sequentially arranged at intervals along the laying direction of the steel rail 2.
In the concrete implementation, the pavement structure of the road core cover plate can be arranged to realize the track bed evacuation function, the pavement structure of the balancing weight can effectively control the natural vibration frequency of the track and realize a better vibration damping effect, and the embedded sleeves of all parts are effective reservation conditions for hoisting, overhauling and jacking, longitudinally connecting and installing the cover plate bracket.
As shown in fig. 4, the track structure of the present invention can be applied to the laying condition of the curve section of not less than 300 m.
The utility model discloses the concrete preparation of implementation, equipment implementation process as follows:
1. determining structure type
The length size of the track structure unit is selected by combining project technical standards, the upper and lower components of the track structure are determined, and a limit scheme, a drainage scheme and a road center covering scheme are defined.
2. Material and parts preparation
1) Material
Selecting proper steel bars, concrete, self-compacting concrete or self-leveling mortar, vibration damping pads or vibration damping pads, rubber cushion layers, surface sealants and the like.
2) Component part
Suitable steel rails, fasteners, 8-shaped rail plates, road core cover plates or balancing weights are selected and used in a matched manner.
3. Acceptance of basic conditions
The acceptance main control project comprises acceptance contents such as reserved track structure height, foundation finishing degree, foundation galling, reserved pre-embedding, settlement evaluation data and the like.
4. Base construction
Limiting boss steel bars and base steel bars are bound in a cage, and the base expansion joints are straight and run through; the track structure is ultrahigh and is realized on a base.
5. Laying of damping mats or layers
The top surface of the base is required to be cleaned, the vibration damping pad is laid to be smooth, wrinkle-free and damage-free, and lap joint or seam joint is not required within the range of the ballast bed unit; the vibration damping layer should be laid smoothly and continuously without longitudinal splicing seams, and the splicing length and quality should be ensured by the transverse seams.
6. Self-compaction layer reinforcing mesh and track slab laying
When the self-compacting concrete layer reinforcing mesh is bound and fixed, the thickness of the reinforcing steel bar protective layer is controlled, and treading is strictly prohibited after laying; the track slab is paved and finely adjusted by adopting supporting cushion blocks, fine adjustment equipment and the like, and effective protective measures are taken after the fine adjustment is finished, so that trampling and impacting are strictly prohibited.
7. Self-compacting concrete pour
Before the self-compacting concrete is poured, a limiting boss template (containing an elastic cushion layer space) is fixed, and the self-compacting concrete template is matched and installed, so that slurry leakage is avoided, and slurry discharge holes, overflow prevention pipes, a pressing and side movement prevention device and the like are stable and reliable; the top surface of the vibration damping pad and the ground of the track slab are wetted and no open water is available; when the mixing temperature, the slump, the extension time, the air content, the bleeding rate and the like of the self-compacting concrete meet the requirements of related technologies, the self-compacting concrete can be poured; and secondary pouring is not required, the curing time of the film is not less than 3d, and the track slab can bear the design load after the strength reaches 100% of the design strength.
8. Pour spacing boss
Chiseling, cleaning a limit boss foundation, cleaning a base, adhering an elastic cushion layer, checking a steel bar and pouring a limit boss.
Therefore, the utility model discloses supporting 8 prefabricated track boards of style of calligraphy's track structure is reliable, the interface is complete, the suitability is strong, can realize the batch production prefabrication, and effective control track structure quality can ensure construction high efficiency, high accuracy, high quality and maintenance convenience, simultaneously, can be applied to the sensitive point protection district section of no damping district section or different damping demands respectively.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (10)
1. The utility model provides a track structure suitable for supporting 8 style of calligraphy track boards of urban rail transit construction which characterized in that: different track structures are adopted on the road surfaces of different sections:
when in a roadbed section, a first track structure is adopted;
the first track structure comprises an 8-shaped track plate (4) and a reinforced concrete base (7), a steel rail (2) is laid on the 8-shaped track plate (4), the 8-shaped track plate (4) is arranged on the reinforced concrete base (7), limiting structures (8) used for positioning the 8-shaped track plate (4) are arranged on two sides of the reinforced concrete base (7), self-compacting concrete/self-leveling mortar (5) is arranged between the bottom surface of the 8-shaped track plate (4) and the reinforced concrete base (7), and a limiting cushion layer (9) is arranged between the side surface of the 8-shaped track plate (4) and the limiting structures (8); longitudinal ditches (13) are arranged on two sides of the bottom of the reinforced concrete base (7), a plurality of transverse drain holes (12) are arranged at the bottom of the reinforced concrete base (7), the transverse drain holes (12) are uniformly distributed at intervals along the laying direction of the steel rail (2), each transverse drain hole (12) is arranged perpendicular to the laying direction of the steel rail (2) and penetrates through two sides of the reinforced concrete base (7), and two ends of each transverse drain hole (12) are communicated with the longitudinal ditches (13) on the two sides of the reinforced concrete base (7); the 8-shaped track plate (4) mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate (4) along the laying direction of the steel rail (2), and notch grooves are formed in the edges of two ends and four corners respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; the outer side face and the rectangular through groove wall of the 8-shaped track plate (4) are provided with embedded sleeves, a core cover plate (10) is installed in the rectangular through groove, the core cover plate (10) is installed in the rectangular through groove through a supporting connecting piece, supporting connecting pieces are installed on the side walls of two side grooves of the rectangular through groove of the 8-shaped track plate (4), each supporting connecting piece comprises an angle steel (20) and a connecting bolt (21), the angle steel (20) is fixed on the groove side wall of the rectangular through groove of the 8-shaped track plate (4) through the connecting bolt (21), the section of each angle steel (20) is arranged in an inverted L shape, and the core cover plate (10) is erected on the supporting connecting pieces on the two sides;
when the tunnel section of the rectangular road surface is used, a second track structure is adopted;
the second track structure comprises an 8-shaped track plate (4) and a reinforced concrete base (7), a steel rail (2) is laid on the 8-shaped track plate (4), the 8-shaped track plate (4) is arranged on the reinforced concrete base (7), limiting structures (8) used for positioning the 8-shaped track plate (4) are arranged on two sides of the reinforced concrete base (7), self-compacting concrete/self-leveling mortar (5) is arranged between the bottom surface of the 8-shaped track plate (4) and the reinforced concrete base (7), and a limiting cushion layer (9) is arranged between the side surface of the 8-shaped track plate (4) and the limiting structures (8); longitudinal ditches (13) are arranged on the two lateral sides of the bottom of the reinforced concrete base (7), a central ditch (15) is formed in the center of the bottom of the reinforced concrete base (7) along the laying direction of the steel rail (2), the central ditch (15) is communicated with the rectangular through groove, a water intercepting ditch (14) is formed in the bottom of the reinforced concrete base (7) below the rectangular through groove, the water intercepting ditch (14) is arranged perpendicular to the laying direction of the steel rail (2) and penetrates through the two sides of the reinforced concrete base (7), and the two ends of the water intercepting ditch (14) penetrate through the reinforced concrete base (7) to communicate the longitudinal ditches (13) with the central ditch (15); the 8-shaped track plate (4) mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate (4) along the laying direction of the steel rail (2), and two notch grooves are formed in two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; the outer side face and the rectangular through groove wall of the 8-shaped track plate (4) are provided with embedded sleeves, a core cover plate (10) is installed in the rectangular through groove, the core cover plate (10) is installed in the rectangular through groove through a supporting connecting piece, supporting connecting pieces are installed on the side walls of two side grooves of the rectangular through groove of the 8-shaped track plate (4), each supporting connecting piece comprises an angle steel (20) and a connecting bolt (21), the angle steel (20) is fixed on the groove side wall of the rectangular through groove of the 8-shaped track plate (4) through the connecting bolt (21), the section of each angle steel (20) is arranged in an inverted L shape, and the core cover plate (10) is erected on the supporting connecting pieces on the two sides;
when the tunnel section on the circular road surface is used, a third track structure is adopted;
the third track structure comprises an 8-shaped track plate (4) and a reinforced concrete base (7), a steel rail (2) is laid on the 8-shaped track plate (4), the 8-shaped track plate (4) is arranged on the reinforced concrete base (7), limiting structures (8) used for positioning the 8-shaped track plate (4) are arranged on two sides of the reinforced concrete base (7), self-compacting concrete/self-leveling mortar (5) and a damping pad (6) are arranged between the bottom surface of the 8-shaped track plate (4) and the reinforced concrete base (7) from top to bottom, and a limiting cushion layer (9) is arranged between the side surface of the 8-shaped track plate (4) and the limiting structures (8); longitudinal ditches (13) are arranged at the two sides of the bottom of the reinforced concrete base (7); the 8-shaped track plate (4) mainly comprises poured concrete and track plate reinforcing bars arranged in the concrete, one to three rectangular through grooves are formed in the middle of the 8-shaped track plate (4) along the laying direction of the steel rail (2), and two notch grooves are formed in two ends of the 8-shaped track plate respectively to form a structure shaped like a Chinese character 'mu' or 'ri'; install balancing weight (11) in the groove is led to the rectangle, install balancing weight (11) through supporting connection spare in the groove is led to the rectangle, 8 style of calligraphy track board (4) both sides groove lateral wall that the groove is led to the rectangle all installs a supporting connection spare, every supporting connection spare includes angle steel (20) and connecting bolt (21), angle steel (20) are fixed in the groove lateral wall that 8 style of calligraphy track board (4) rectangle led to the groove through connecting bolt (21), angle steel (20) cross-section is the type of falling L and arranges, balancing weight (11) are erect on the supporting connection spare of both sides.
2. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: among the first kind of track structure, limit structure (8) protrusion reinforced concrete base (7) and be located the protruding falcon structure in the breach groove at 8 style of calligraphy track board (4) both ends edges.
3. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: in the second kind of track structure, limit structure (8) protrusion reinforced concrete base (7) just are arranged in the protruding falcon structure in the breach groove in the four corners of 8 style of calligraphy track board (4).
4. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: in the third track structure, the limiting structure (8) protrudes out of the reinforced concrete base (7) and is located in the tenon structures in the notch grooves in the edges of the two ends of the 8-shaped track plate (4).
5. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: the 8-shaped track plate (4) is provided with two rows of parallel track bearing platform vibration reduction fasteners, each row of track bearing platforms are formed by a plurality of track bearing platforms which are uniformly distributed at intervals along the laying direction of the steel rails and are fixed on the 8-shaped track plate (4), and the two steel rails (2) are laid on the two rows of track bearing platforms through the vibration reduction fasteners.
6. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: the rail plate reinforcing steel adopts a prestressed reinforcement system (3) or a non-prestressed reinforcement net (18).
7. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 6, is characterized in that: the prestressed reinforcement system (3) is mainly composed of a plurality of parallel reinforcements arranged inside the 8-shaped track plate (4), and each reinforcement is arranged inside the 8-shaped track plate (4) in a penetrating mode along the laying direction of the steel rail (2).
8. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 6, is characterized in that: the non-prestressed reinforcement net (18) mainly comprises two groups of parallel reinforcement groups arranged inside the 8-shaped track plate (4), each group of parallel reinforcement group is composed of a plurality of reinforcements which are arranged inside the 8-shaped track plate (4) in parallel but do not penetrate through the 8-shaped track plate (4), and the two groups of parallel reinforcement groups are arranged in a vertical crossing manner.
9. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: the center cover plate (10) is erected on angle steel (20) of the supporting and connecting piece on two sides, and the thickness of the center cover plate (10) is the same as the vertical distance from the top surface of the angle steel (20) to the upper edge of the rectangular through groove.
10. The track structure suitable for the 8-shaped track slab matched with the urban rail transit construction according to claim 1, is characterized in that: the counterweight block (11) is erected on angle steel (20) of the supporting and connecting piece on two sides and extends downwards to the lower edge of the rectangular through groove, and the thickness of the counterweight block (11) is the same as that of the rectangular through groove.
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| CN201920237578.7U CN210826938U (en) | 2019-02-25 | 2019-02-25 | Track structure suitable for urban rail transit construction is supporting 8 types track board |
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| CN201920237578.7U CN210826938U (en) | 2019-02-25 | 2019-02-25 | Track structure suitable for urban rail transit construction is supporting 8 types track board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763384A (en) * | 2019-02-25 | 2019-05-17 | 杭州银龙唐普徕科技有限公司 | The track structure of mating 8 font track plates is built suitable for city rail traffic |
| CN111893808A (en) * | 2020-08-21 | 2020-11-06 | 中铁四院集团工程建设有限责任公司 | Treatment structure and treatment method for damage of ballastless track boss |
-
2019
- 2019-02-25 CN CN201920237578.7U patent/CN210826938U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763384A (en) * | 2019-02-25 | 2019-05-17 | 杭州银龙唐普徕科技有限公司 | The track structure of mating 8 font track plates is built suitable for city rail traffic |
| CN111893808A (en) * | 2020-08-21 | 2020-11-06 | 中铁四院集团工程建设有限责任公司 | Treatment structure and treatment method for damage of ballastless track boss |
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