CN215829177U - High-performance concrete combined rail road crossing structure - Google Patents
High-performance concrete combined rail road crossing structure Download PDFInfo
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- CN215829177U CN215829177U CN202121941558.1U CN202121941558U CN215829177U CN 215829177 U CN215829177 U CN 215829177U CN 202121941558 U CN202121941558 U CN 202121941558U CN 215829177 U CN215829177 U CN 215829177U
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Abstract
The utility model discloses a high-performance concrete combined track level crossing structure which comprises a base, wherein a filling layer, a track plate and a paving layer are sequentially arranged above the base; a filling layer steel bar net piece is arranged in the filling layer, a plurality of door-shaped steel bars are connected between the filling layer and the track plate, and a filling hole and an observation hole which are communicated with the filling layer are formed in the middle of the track plate; a pavement layer steel bar net piece is arranged in the pavement layer, a plurality of L-shaped steel bars are arranged between the pavement layer and the track plate, and the upper surface of the track plate is a pattern surface; this high performance concrete combination track level crossing structure is through optimizing the upper and lower connection structure of track board for whole more firm reliable, the structure is light, has strengthened surperficial wearability and impact resistance moreover, has improved the track board underfill material, ensures track board fine-tuning precision and filling plumpness.
Description
Technical Field
The utility model relates to the technical field of track construction, in particular to a high-performance concrete combined track level crossing structure.
Background
The existing railway level crossing mostly adopts two forms of a rubber pad and a crossing plate, wherein the rubber pad crossing is combined with a sleeper by utilizing the rubber pad, and the crossing plate is combined by filling dry-mixed cement sand into a prefabricated track plate.
The rubber cushion road junction is not provided with a special sleeper, wherein the common new type II and type III cement sleepers are easy to damage due to the fact that the impact of a running truck on the road junction is not considered, so that the maintenance frequency is high, and the difficulty is high; the road junction that is applied to railway, track traffic at present is mostly the rubber road junction, and the road junction does not have the transition with highway or concrete retaining wall part, and direct close-fitting is handled, can produce great crack and wrong platform after the rubber shrink, influences ride comfort and pleasing to the eye degree, and later stage is overhauld the difficulty. The Chinese patent application (publication number: CN111002464A) discloses a prefabricated crossing plate capable of being assembled quickly in 2020, and the crossing is installed through a prefabricated structure, but the construction process is relatively complex.
In addition, the bottom of the prefabricated crossing plate adopts dry-mixed cement sand as a filling layer, so that the construction precision control difficulty is high, and the phenomenon of filling insufficiency is easy to occur; in a season with heavy rain, cement sand is easy to run off to cause a cavity phenomenon, and the track slab is seriously cracked under heavy load; when the surface of the heavy-duty truck frequently passes through, the creeping and peeling phenomena are easy to occur on the surface of the crossing plate.
Disclosure of Invention
The utility model aims to provide a high-performance concrete combined rail level crossing structure aiming at the problems in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a high-performance concrete combined rail road crossing structure comprises a base, wherein a rail plate is arranged above the base, a filling layer is arranged between the rail plate and the base, and a paving layer is arranged above the rail plate; a filling layer steel bar net piece is arranged in the filling layer, a plurality of door-shaped steel bars are connected between the filling layer and the track slab, a filling hole communicated with the filling layer is further formed in the middle of the track slab, observation holes communicated with the filling layer are further symmetrically formed in two sides of the filling hole, and the filling hole and the observation holes both penetrate through the track slab and the pavement layer upwards; the pavement layer is internally provided with a pavement layer steel bar net piece, the pavement layer is provided with a plurality of L-shaped steel bars between the track plates, and the upper surface of the track plate is a pattern surface.
This high performance concrete combination track level crossing structure is through optimizing the upper and lower connection structure of track board for whole more firm reliable, the structure is light moreover, has strengthened surperficial wearability and impact resistance, has improved the track board underfill material, ensures track board fine-tuning precision and filling plumpness.
Compared with the existing structure, the additionally arranged pavement layer and the track slab form a combined structure, so that the crack resistance and the durability of the slab pavement layer are improved, the impact effect under the action of vehicle load is reduced, and the pavement structure is suitable for pavement of the top surface structure of the track slab; the arrangement of the L-shaped reinforcing steel bars can enhance the combining capacity of the pavement layer and the track slab and improve the connection strength, and the arrangement of the pavement layer reinforcing steel bar net piece can improve the strength and the structural stability of the pavement layer so that the pavement layer reinforcing steel bar net piece can bear larger external impact; will the upper surface of track board sets up to the flower line face, can promote roughness and frictional force, is favorable to the combination between track board and the layer high performance concrete of mating formation.
The filling structure at the lower part of the track slab is optimized, and the fine adjustment precision and the filling plumpness of the track slab can be ensured during the fine adjustment of the track by additionally arranging the filling layer; the portal-shaped steel bars are embedded and additionally arranged at the bottom of the track slab, so that the stability of the connection with the self-compacting concrete filling layer is enhanced, and the stress uniformity of the whole structure is more effectively ensured; the setting of pouring hole is convenient for cast in situ, the setting of observation hole is convenient for observe the flowing situation of self-leveling concrete when pouring to observe the concrete and rise the overflow state so that control the volume of pouring.
Furthermore, the track plates are sequentially arranged at equal intervals along the length direction of the substrate, each track plate is symmetrically provided with a trapezoidal groove, the trapezoidal grooves are arranged along the length direction, the bottoms of the trapezoidal grooves are provided with a plurality of pairs of fastener sleeves at equal intervals, and the trapezoidal grooves are used for connecting and mounting fastener base plates; the door-shaped reinforcing steel bars are arranged right below the trapezoidal groove, and the span of the door-shaped reinforcing steel bars is not smaller than the maximum groove width of the trapezoidal groove.
Namely, the track slab is arranged in blocks, so that the independent construction in blocks and areas is facilitated; the dovetail groove with fastener sheathed tube setting is convenient for stably connect the fastener backing plate, will door shape reinforcing bar sets up under the dovetail groove, can promote the joint strength and the support stability of dovetail groove place cross-section to compensate and strengthen the intensity that the track board was slotted (reduced for the track board thickness of this department) in this department.
Further, the length of each track plate is about 2300mm, the distance between adjacent track plates is about 100mm, the distance above the trapezoidal groove is about 450mm, and the distance between the center lines of the pair of trapezoidal grooves is about 1514 mm. The size of the rail is set, the high requirement of the rail is met, the structure is simplified, and the whole rail is lighter.
Furthermore, the pouring hole is arranged in the middle of the track slab, and the observation holes are symmetrically arranged on two sides of the pouring hole in the front-back direction along the length direction; the maximum diameter of the observation hole and the maximum diameter of the perfusion hole are both 180mm, and the inner peripheries of the perfusion hole and the observation hole are both provided with slopes from top to bottom.
Will the pouring hole sets up the concrete of being convenient for in the centre portion and evenly trickles around, and the observation hole that sets up around is convenient for observe from a plurality of directions and pours the condition, can avoid being close to the dovetail groove of both sides moreover.
Furthermore, the track slab is a prefabricated member and consists of reinforcing steel bars, connecting pieces, embedded parts and concrete; the bottom of the track slab is reserved with the door-shaped steel bars, the upper portion of the track slab is pre-embedded with a connecting sleeve connected with the L-shaped steel bars, the bottom of the L-shaped steel bars is provided with a threaded mantle fiber, and the connecting sleeve is tightly connected with the L-shaped steel bars through the threaded mantle fiber.
Adopt pre-buried connecting sleeve to fix L shape reinforcing bar is more convenient, and threaded connection is comparatively convenient and can promote combining ability between them, makes L shape reinforcing bar plays better atress effect.
Furthermore, the filling layer is a poured self-compacting concrete layer, the reinforcing mesh sheets of the filling layer are reinforcing mesh layers bound together in a criss-cross mode, and the reinforcing mesh sheets of the filling layer are arranged above the horizontal ribs of the portal reinforcing steel bars and are also bound and connected with the portal reinforcing steel bars.
The door-shaped reinforcing steel bars can support the reinforcing mesh sheets of the filling layer through the arrangement, and the mutual binding of the reinforcing mesh sheets and the filling layer can also improve the stability of supporting connection, so that the stress conduction and the stress dispersion are facilitated.
Further, the paving layer is a poured ultrahigh-performance concrete layer; the mat formation layer reinforcing steel bar net piece is a reinforcing steel bar layer which is bound together in a criss-cross mode, and the mat formation layer reinforcing steel bar net piece is arranged below the horizontal bars of the L-shaped reinforcing steel bars and is also bound and connected with the L-shaped reinforcing steel bars.
The L-shaped reinforcing steel bars can be connected with the reinforcing steel mesh of the pavement layer in a positioning mode, so that the strength of the pavement layer is improved, and the stress state of the pavement layer is improved.
Furthermore, a plurality of binding pieces are arranged below the horizontal ribs of the L-shaped reinforcing steel bars, and the binding pieces are connected with the reinforcing steel mesh pieces of the pavement layer to form an integral stress structure.
Further, the thickness of layer of mating formation is about 80mm, the track plate thickness is about 327mm, the both sides wall of track board still is equipped with a plurality of bolt embedded sleeve pipes, two of bolt embedded sleeve pipes are the setting of a set of symmetry.
Compared with the prior art, the utility model has the beneficial effects that: 1. the high-performance concrete combined rail level crossing structure has the advantages that the whole structure is more stable and reliable by optimizing the upper and lower connecting structures of the rail plates, and the structure is light; 2. the pavement layer and the track slab which are additionally arranged form a combined structure, so that the crack resistance and the durability of the pavement layer on the board surface are improved, and the impact action under the action of vehicle load is reduced; the arrangement of the L-shaped reinforcing steel bars can enhance the combination capacity of the pavement layer and the track slab, improve the connection strength, and the arrangement of the pattern surface can improve the roughness and the friction force, thereby being beneficial to the combination between the track slab and the concrete; 3. by additionally arranging the filling layer, the fine adjustment precision and the filling plumpness of the track slab can be ensured during the fine adjustment of the track; the embedded portal reinforcing steel bar that adds in track board bottom has strengthened and has connected the steadiness with self-compaction concrete filling layer, guarantees overall structure atress homogeneity more effectively.
Drawings
FIG. 1 is a schematic view of a single track slab of a high performance concrete composite track level crossing structure of the present invention;
FIG. 2 is a schematic view of a plurality of track slabs of a high performance concrete composite track level crossing structure of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 4 is a connecting structure of the L-shaped reinforcing bars of the present invention;
in the figure: 1. a track plate; 2. a substrate; 3. a filling layer; 4. a paving layer; 5. filling layer steel bar net sheets; 6. door-shaped steel bars; 7. paving a layer of reinforcing mesh; 8. l-shaped reinforcing steel bars; 9. a perfusion hole; 10. an observation hole; 11. a trapezoidal groove; 12. a fastener sleeve; 13. embedding a sleeve by using a bolt; 14. a connecting sleeve; 15. and (4) binding pieces.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1 to 3, a high performance concrete composite rail level crossing structure includes a base 2, a rail plate 1 is disposed above the base 2, a filling layer 3 is disposed between the rail plate 1 and the base 2, and a pavement layer 4 is disposed above the rail plate 1; a filling layer steel bar net piece 5 is arranged in the filling layer 3, a plurality of door-shaped steel bars 6 are connected between the filling layer 3 and the track slab 1, a filling hole 9 communicated with the filling layer 3 is further formed in the middle of the track slab 1, observation holes 10 communicated with the filling layer 3 are further symmetrically formed in two sides of the filling hole 9, and the filling hole 9 and the observation holes 10 both penetrate through the track slab 1 and the pavement layer 4 upwards; the steel bar net piece 7 of the pavement layer is arranged in the pavement layer 4, a plurality of L-shaped steel bars 8 are arranged between the pavement layer 4 and the track plate 1, and the upper surface of the track plate 1 is a pattern surface.
This high performance concrete combination track level crossing structure is through optimizing the upper and lower connection structure of track board for whole more firm reliable, the structure is light moreover, has strengthened surperficial wearability and impact resistance, has improved the track board underfill material, ensures track board fine-tuning precision and filling plumpness.
Compared with the existing structure, the additionally arranged pavement layer 4 and the track slab 1 form a combined structure, so that the crack resistance and the durability of the slab pavement layer are improved, the impact effect under the action of vehicle load is reduced, and the pavement structure is suitable for pavement of the top surface structure of the track slab; the arrangement of the L-shaped steel bars 8 can enhance the combining capacity of the pavement layer 4 and the track slab 1 and improve the connection strength, and the arrangement of the pavement layer steel mesh 7 can improve the strength and the structural stability of the pavement layer 4, so that the pavement layer 4 can bear larger external impact; will the upper surface of track board 1 sets up to the flower pattern face, can promote roughness and frictional force, is favorable to the combination between track board 1 and the concrete.
The filling structure at the lower part of the track slab 1 is optimized, and the fine adjustment precision and the filling plumpness of the track slab can be ensured during fine adjustment of the track by additionally arranging the filling layer 3; the portal-shaped steel bars 6 are embedded and additionally arranged at the bottom of the track slab 1, so that the connection stability with the self-compacting concrete filling layer is enhanced, and the stress uniformity of the whole structure is more effectively ensured; the pouring hole 9 is convenient for cast-in-place, and the observation hole 10 is convenient for observing the flowing condition of the self-leveling concrete during pouring and observing the rising and overflowing state of the concrete so as to control the pouring amount.
Furthermore, the track plates 1 are sequentially arranged at equal intervals along the length direction of the substrate 2, each track plate 1 is symmetrically provided with a trapezoidal groove 11, the trapezoidal grooves 11 are arranged along the length direction, the bottoms of the trapezoidal grooves 11 are provided with a plurality of pairs of fastener sleeves 12 at equal intervals, and the trapezoidal grooves 11 are used for connecting and mounting fastener base plates; a plurality of door shape reinforcing bar 6 all sets up under trapezoidal groove 11, the span of door shape reinforcing bar 6 is not less than the biggest groove width of trapezoidal groove 11.
That is to say, the track slab 1 is arranged in blocks, so that the independent construction in blocks and areas is facilitated; trapezoidal groove 11 with fastener sleeve 12 sets up and is convenient for stably connect the fastener backing plate, will portal reinforcing bar 6 sets up under trapezoidal groove 11, can promote the joint strength and the support stability of trapezoidal groove 11 place cross-section to compensate and strengthen the intensity that the track board was slotted (reduced for the track board thickness of this department) in this department.
Further, the length of a single track plate 1 is about 2300mm, the distance between adjacent track plates 1 is about 100mm, the maximum distance above the trapezoidal groove 11 is about 450mm, and the distance between the center lines of a pair of the trapezoidal grooves 11 is about 1514 mm. The size of the rail is set, the high requirement of the rail is met, the structure is simplified, and the whole rail is lighter.
Further, the pouring hole 9 is arranged in the middle of the track slab 1, and the observation holes 10 are symmetrically arranged on two sides of the pouring hole 9 in the front-back direction along the length direction; the maximum diameters of the observation hole 10 and the perfusion hole 9 are both 180mm, and the inner peripheries of the perfusion hole 9 and the observation hole 10 are both provided with slopes from top to bottom.
Will the pouring hole 9 sets up concrete of being convenient for in the centre portion and evenly trickles around, and the observation hole 10 that sets up around is convenient for observe the pouring condition from a plurality of directions, can avoid being close to the dovetail groove 11 of both sides moreover.
Further, the filling layer 3 is the self-compaction concrete layer of pouring, the filling layer reinforcing bar net piece 5 is the reinforcing bar layer that vertically and horizontally staggered tied up together, the position that the filling layer reinforcing bar net piece 5 set up is in the top of the horizontal muscle of door shape reinforcing bar 6, and with also the ligature connection between the door shape reinforcing bar 6.
Due to the arrangement, the door-shaped reinforcing steel bars 6 can support the filling layer reinforcing steel mesh 5, the mutual binding of the filling layer reinforcing steel mesh and the filling layer reinforcing steel mesh can also improve the stability of supporting connection, and the stress conduction and the stress dispersion are facilitated.
Further, the pavement layer 4 is a poured ultrahigh-performance concrete layer; the mat formation layer reinforcing steel bar net piece 7 is a reinforcing steel bar layer which is bound together in a criss-cross mode, and the mat formation layer reinforcing steel bar net piece 7 is arranged at a position below the horizontal bars of the L-shaped reinforcing steel bars 8 and is also bound and connected with the L-shaped reinforcing steel bars 8.
The L-shaped reinforcing steel bars 8 can be connected with the reinforcing mesh 7 of the pavement layer in a positioning mode, so that the strength of the pavement layer 4 is improved, and the stress state of the pavement layer is improved.
Further, the thickness of layer 4 of mating formation is about 80mm, the thickness of track board 1 is about 327mm, the both sides wall of track board 1 still is equipped with a plurality of bolt embedded sleeve 13, bolt embedded sleeve 13 is two settings for a set of symmetry.
Example two:
the embodiment provides another connecting structure of the L-shaped reinforcing steel bars.
As shown in fig. 4, a connecting sleeve 14 connected with the L-shaped steel bar 8 is embedded in the upper portion of the track slab 1, a threaded mantle fiber is arranged at the bottom of the L-shaped steel bar 8, and the connecting sleeve 14 is tightly connected with the L-shaped steel bar 8 through the threaded mantle fiber.
Adopt pre-buried connecting sleeve 14 fixed L shape reinforcing bar 8 is convenient construction operation relatively, and threaded connection makes things convenient for the operation and can promote combining ability between them, makes L shape reinforcing bar plays better atress effect.
Further, the below of the horizontal muscle of L shape reinforcing bar 8 is equipped with a plurality of ligatures 15, ligature 15 is connected layer reinforcing bar net piece 7 paves, makes L shape reinforcing bar 8 with layer reinforcing bar net piece 7 multidirectional ligature of mating formation is connected, forms whole stress structure. When pouring is carried out, the L-shaped steel bars 8 can pre-support the reinforcing mesh 7 of the pavement layer.
Example three:
the embodiment provides a construction method of the structure in the first embodiment when the existing crossing is transformed. The method comprises the following steps:
(1) dismantling and transforming a line steel rail, a fastener, a sleeper, a railway ballast and the like on the existing railway crossing;
(2) excavating the foundation to the required elevation and width, and tamping and leveling the foundation;
(3) hardening the substrate according to the field working condition;
(4) measuring the positioning point of the position of the pay-off track plate according to the line;
(5) laying and binding a filling layer steel bar net piece at the lower part of the track slab;
(6) firstly paving and positioning the track slab (the track slab is prefabricated by a factory, and a paving layer on the upper part of the track slab is paved by the factory and is integrally transported to a site);
(7) accurately adjusting the track slab in place by using a measuring instrument according to the track line type;
(8) installing and reinforcing a bottom template of the track slab;
(9) the configuration and the on-site mixing of self-compaction concrete are accomplished, fill through the filling hole through self-control combination hopper and accomplish, notice when filling and observe the flowing situation of self-leveling concrete from the observation hole to observe the ascending overfall condition of self-compaction concrete, control the volume of pouring.
Example four:
the embodiment provides a construction method of the structure at a newly-built line crossing in the first embodiment. The method comprises the following steps:
(1) cleaning and leveling the roadbed of the newly-built line;
(2) arranging and binding base steel bars on the roadbed according to the base structure design drawing;
(3) installing a base template, pouring concrete, maintaining and the like;
(4) measuring the positioning point of the position of the pay-off track plate according to the line;
(5) laying and binding a filling layer steel bar net piece at the lower part of the track slab;
(6) firstly paving and positioning the track slab (the track slab is prefabricated by a factory, and a paving layer on the upper part of the track slab is paved by the factory and is integrally transported to a site);
(7) accurately adjusting the track slab in place by using a measuring instrument according to the track line type;
(8) installing and reinforcing a bottom template of the track slab;
(9) the configuration and the on-site mixing of self-compaction concrete are accomplished, fill through the filling hole through self-control combination hopper and accomplish, notice when filling and observe the flowing situation of self-leveling concrete from the observation hole to observe the ascending overfall condition of self-compaction concrete, control the volume of pouring.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A high-performance concrete combined rail road crossing structure comprises a base, wherein a rail plate is arranged above the base, and is characterized in that a filling layer is arranged between the rail plate and the base, and a paving layer is arranged above the rail plate; a filling layer steel bar net piece is arranged in the filling layer, a plurality of door-shaped steel bars are connected between the filling layer and the track slab, a filling hole communicated with the filling layer is further formed in the middle of the track slab, observation holes communicated with the filling layer are further symmetrically formed in two sides of the filling hole, and the filling hole and the observation holes both penetrate through the track slab and the pavement layer upwards; the pavement layer is internally provided with a pavement layer steel bar net piece, the pavement layer is provided with a plurality of L-shaped steel bars between the track plates, and the upper surface of the track plate is a pattern surface.
2. The high-performance concrete combined rail level crossing structure as claimed in claim 1, wherein the rail plates are arranged in the length direction of the base at equal intervals, each rail plate is symmetrically provided with a trapezoidal groove, the trapezoidal grooves are arranged in the length direction, the bottoms of the trapezoidal grooves are provided with a plurality of pairs of fastener sleeves at equal intervals, and the trapezoidal grooves are used for connecting and mounting sleepers; the door-shaped reinforcing steel bars are arranged right below the trapezoidal groove, and the span of the door-shaped reinforcing steel bars is not smaller than the maximum groove width of the trapezoidal groove.
3. The high performance concrete composite track level crossing structure according to claim 2, wherein the length of each track plate is 2300mm, the distance between adjacent track plates is 100mm, the distance above the trapezoidal grooves is 450mm, and the distance between the center lines of a pair of the trapezoidal grooves is 1514 mm.
4. The high-performance concrete combined rail road crossing structure according to claim 1, wherein the pouring hole is arranged in the middle of the rail plate, and the observation holes are symmetrically arranged at the two sides of the pouring hole in the front-back direction along the length direction; the maximum diameter of the observation hole and the maximum diameter of the perfusion hole are both 180mm, and the inner peripheries of the perfusion hole and the observation hole are both provided with slopes from top to bottom.
5. The high-performance concrete combined track level crossing structure according to claim 1, wherein the track slab is a prefabricated member composed of reinforcing steel bars, connecting members, embedded parts and concrete; the bottom of the track slab is reserved with the door-shaped steel bars, the upper portion of the track slab is pre-embedded with a connecting sleeve connected with the L-shaped steel bars, the bottom of the L-shaped steel bars is provided with a threaded mantle fiber, and the connecting sleeve is tightly connected with the L-shaped steel bars through the threaded mantle fiber.
6. The high-performance concrete combined track level crossing structure according to claim 1, wherein the filling layer is a poured self-compacting concrete layer, the filling layer steel bar net pieces are steel bar layers bound together in a criss-cross manner, and the filling layer steel bar net pieces are arranged above the horizontal bars of the portal steel bars and are also bound and connected with the portal steel bars.
7. The high-performance concrete composite track level crossing structure according to claim 1, wherein the pavement layer is a poured ultra-high performance concrete layer; the mat formation layer reinforcing steel bar net piece is a reinforcing steel bar layer which is bound together in a criss-cross mode, and the mat formation layer reinforcing steel bar net piece is arranged below the horizontal bars of the L-shaped reinforcing steel bars and is also bound and connected with the L-shaped reinforcing steel bars.
8. The high-performance concrete combined rail level crossing structure according to claim 1 or 7, wherein a plurality of binding pieces are arranged below the horizontal bars of the L-shaped reinforcing steel bars, and the binding pieces are connected with the reinforcing steel mesh pieces of the pavement layer to form an integral stress structure.
9. The high-performance concrete combined rail road crossing structure according to claim 7, wherein the pavement layer is 80mm thick, the rail plate is 327mm thick, a plurality of bolt embedded sleeves are further arranged on two side walls of the rail plate, and two bolt embedded sleeves are symmetrically arranged in one group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121941558.1U CN215829177U (en) | 2021-08-18 | 2021-08-18 | High-performance concrete combined rail road crossing structure |
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| CN202121941558.1U CN215829177U (en) | 2021-08-18 | 2021-08-18 | High-performance concrete combined rail road crossing structure |
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