CN114875724A - Track pavement structure - Google Patents
Track pavement structure Download PDFInfo
- Publication number
- CN114875724A CN114875724A CN202210505519.XA CN202210505519A CN114875724A CN 114875724 A CN114875724 A CN 114875724A CN 202210505519 A CN202210505519 A CN 202210505519A CN 114875724 A CN114875724 A CN 114875724A
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- Prior art keywords
- height
- steel plate
- embedded
- adjustable
- guide rail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 131
- 239000010959 steel Substances 0.000 claims abstract description 131
- 239000004568 cement Substances 0.000 claims abstract description 31
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims 1
- 239000002002 slurry Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
- E01B1/004—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with prefabricated elements embedded in fresh concrete or asphalt
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a track pavement structure, comprising: the device comprises a cement foundation, two groups of height-adjustable steel plate embedded assemblies, two embedded pits and a guide rail; wherein, a guide rail is fixedly paved on the cement foundation; the cement foundations on the two sides of the guide rail are respectively provided with a pre-buried pit, and a group of pavement support pre-buried components are paved in each pre-buried pit; the height difference is formed between the upper plane of each group of height-adjustable steel plate embedded assemblies and the upper plane of the embedded pit, and a grouting space is arranged inside each group of height-adjustable steel plate embedded assemblies. This track road surface structure sets up the pre-buried hole owing to adopt the cement ground in the guide rail both sides to set up the formula of increaseing steel sheet pre-buried subassembly in the pre-buried hole, solved the civil engineering construction precision and not enough lead to the road surface uneven, the uncontrollable problem of both sides difference in height, and because the formula of increaseing steel sheet pre-buried subassembly can adopt the structural style of steel sheet, solve the cement road surface and use the problem that causes the road surface to cave in inequality for a long time.
Description
Technical Field
The invention relates to the field of rail transportation, in particular to a rail pavement structure.
Background
The existing rail road surfaces on two sides of the guide rail are generally paved on two sides of the rail by directly performing cement grouting to form cement road surfaces, and the rail road surfaces mainly have two problems, namely the height of grouting on two sides is inconsistent due to various factors on site, and the height of the road surfaces on two sides of the guide rail is inconsistent; the long-term use can cause the problem of road surface depression.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a track pavement structure which can solve the problems that the heights of the two sides of the existing track are inconsistent due to the adoption of cement pavements and the pavement is sunken and uneven due to long-term use.
The purpose of the invention is realized by the following technical scheme:
an embodiment of the present invention provides a track pavement structure, including:
the device comprises a cement foundation, two groups of height-adjustable steel plate embedded assemblies, two embedded pits and a guide rail; wherein the content of the first and second substances,
the guide rail is fixedly laid on the cement foundation;
the cement foundations on the two sides of the guide rail are respectively provided with one pre-buried pit, and a group of pavement support pre-buried components are paved in each pre-buried pit;
the height difference is formed between the upper plane of each group of height-adjustable steel plate embedded assemblies and the upper plane of the embedded pit, and a grouting space is arranged inside each group of height-adjustable steel plate embedded assemblies.
Compared with the prior art, the track pavement structure provided by the invention has the beneficial effects that:
owing to adopt the cement ground in the guide rail both sides to set up the pre-buried hole to set up the formula of increaseing steel sheet pre-buried subassembly in the pre-buried hole, solved the civil engineering construction precision and not enough lead to the road surface uneven, the uncontrollable problem of both sides difference, and because the formula of increaseing steel sheet pre-buried subassembly can adopt the structural style of steel sheet, improved the wearability, solve cement road surface and use for a long time and cause the problem that the road surface is sunken uneven, the maintenance rate on the track road surface of reduction.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an axial side view of a track pavement structure according to an embodiment of the present invention.
Fig. 2 is a schematic top view of a track pavement structure according to an embodiment of the present invention.
In the figure: 1-cement foundation; 2-heightening type steel plate pre-embedding assembly; 21-height-adjustable channel steel frame; 211-channel steel frame block; 212-height adjustment bar; 22-pavement steel plate; 221-steel plate; 2211-grouting holes; 2211-ventilating holes; 3-pre-burying a pit; 4-guide rail.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below by combining the attached drawings in the embodiment of the invention; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".
The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as ranges of values, the ranges are to be understood as specifically disclosing all ranges formed from any pair of upper, lower, and preferred values within the range, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 ~ 8" is recited, then the numerical range should be interpreted to include ranges of "2 ~ 7", "2 ~ 6", "5 ~ 7", "3 ~ 4 and 6 ~ 7", "3 ~ 5 and 7", "2 and 5 ~ 7", and the like. Unless otherwise indicated, the numerical ranges recited herein include both the endpoints thereof and all integers and fractions within the numerical range.
The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.
The following describes the switch device provided by the present invention in detail. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.
As shown in fig. 1 and 2, an embodiment of the present invention provides a track pavement structure, including:
the device comprises a cement foundation 1, two groups of height-adjustable steel plate embedded assemblies 2, two embedded pits 3 and a guide rail 4; wherein the content of the first and second substances,
the guide rail 4 is fixedly laid on the cement foundation 1;
the cement foundations 1 on two sides of the guide rail 4 are respectively provided with one pre-buried pit 3, and a group of pavement support pre-buried components 2 are paved in each pre-buried pit 3;
the height difference is formed between the upper plane of each group of height-adjustable steel plate embedded assemblies 2 and the upper plane of each embedded pit 3, and a grouting space is arranged inside each group of height-adjustable steel plate embedded assemblies 2. The height difference between the upper plane of each group of height-adjustable steel plate embedded component 2 and the upper plane of the embedded pit 3 can be formed by adjusting the height of the upper plane of each group of height-adjustable steel plate embedded component.
In the structure, the two groups of height-adjustable steel plate embedded assemblies 2 have the same structure and are respectively composed of a plurality of groups of height-adjustable frame steel plate subassemblies;
each set of elevated frame steel plate subassemblies includes:
an elevated channel steel frame 21 and a pavement steel plate 22; wherein the content of the first and second substances,
the height-adjustable channel steel frame 21 is fixedly paved in the embedded pit 3;
the pavement steel plate 22 is laid on the height-adjustable channel steel frame 21, and the top surface of the pavement steel plate 22 is the upper surface of the height-adjustable steel plate embedded component 2.
In the above structure, the height-adjustable channel steel frame 21 is composed of a channel steel frame block 211 and a plurality of height adjusting rods 212;
the bottom of the channel steel frame block 211 is fixed in the embedded pit 3;
the bottom end of the height adjusting rod 212 is fixed in the embedded pit 3, the upper end of the height adjusting rod is fixed on the channel steel frame block 211 through a nut, and the height of the height adjusting rod can be adjusted up and down.
The height adjustment rod 212 is a screw structure. The height of the pavement steel plate 22 mounted thereon can be conveniently adjusted by providing the height adjustment lever 212.
In the above-mentioned height-adjustable frame steel plate subassembly, the road steel plate 22 is composed of a plurality of steel plate blocks 221, and each steel plate block 221 is laid on the height-adjustable channel steel frame 21 in sequence.
The steel plate 221 is provided with grouting holes 2211 and air holes 2211.
In the above structure, the guide rail 4 is fixedly laid at the center of the cement foundation 1.
In the structure, the distance between the embedded pits 3 on the two sides of the guide rail 4 and the guide rail 4 is equal.
In conclusion, the track pavement structure provided by the embodiment of the invention adopts the combination of the height-adjustable channel steel frame and the pavement steel plate to form the height-adjustable frame steel plate subassembly, the height-adjustable steel plate embedded assembly is formed by a plurality of groups of height-adjustable frame steel plate subassemblies, the channel steel frames on the left side and the right side can be conveniently adjusted through the height adjusting rod in the installation process, the height consistency of the height-adjustable steel plate embedded assembly and the cement foundation is ensured, the quick effectiveness of the left-right height adjustment is realized, the working efficiency is improved, and the rework rate of track pavement filling is reduced; meanwhile, the wear resistance of the pavement with the steel plate structure is improved, and the maintenance rate of the track pavement is reduced. The steel plate block grouting port through the pavement steel plate injects the slurry with the dilution ratio being stronger in fluidity, so that the slurry is effectively filled, and the problem that the pavement is uneven due to the fact that the existing cement track pavement is easy to damage after being used for a long time is well solved by combining the pavement steel plate.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following describes the branch device provided by the embodiment of the present invention in detail by using specific embodiments.
Examples
As shown in fig. 1 and 2, an embodiment of the present invention provides a track pavement structure suitable for being used as a track pavement of a tourist bus or other transportation vehicles, including: the device comprises a cement foundation 1, a height-adjustable steel plate embedded assembly 2, an embedded pit 3 and a guide rail 4; wherein the content of the first and second substances,
the guide rail 4 is fixed at the center of the cement foundation 1, and the pre-buried pits 3 are positioned at the left side and the right side of the guide rail 4 and are distributed with the guide rail 4 at equal intervals in the center;
heightening type steel plate embedded assembly 2 is composed of a plurality of groups of heightening type frame steel plate subassemblies, and each group of heightening type frame steel plate subassemblies comprises: a height-adjustable channel steel frame 21 and a pavement steel plate 22; the height-adjustable channel steel frame 21 is embedded in the embedded pit 3, and the pavement steel plate 22 covers the height-adjustable channel steel frame 21; the upper plane of the pavement steel plate 22 can be kept on the same horizontal plane with the upper plane of the cement foundation 1, and a height difference can be set as required.
The height-adjustable channel steel frame 21 consists of a channel steel frame block 211 and a plurality of height adjusting rods 212; the length of each channel steel frame block 211 is set according to actual needs, and height adjusting rods 212 are distributed at four corner positions of each channel steel frame block 211; the height adjusting rod 212 is of a screw rod structure, the bottom end of the height adjusting rod is fixed in the embedded pit 3, the upper end of the height adjusting rod is fixed on the channel steel frame block 211 through a nut, and when the height adjusting rod is integrally assembled and adjusted, the nut at the upper end is adjusted through a spanner, so that the height of the channel steel frame block 211 is adjusted.
The height adjusting rod 212 may be fixed by providing a through hole on the frame of the channel steel frame block 211, or by providing a fixing platform at the inner frame corner of the channel steel frame block 211.
The pavement steel plate 22 is composed of a plurality of steel plates 221, and each steel plate 221 is provided with a grouting hole 2211 and a vent hole 2212. The length of each steel plate block 221 can be set according to actual needs.
The guide rail 3 is fixed at the center of a cement foundation 1, embedded pits 3 are arranged at two sides of the guide rail at equal intervals, the embedded pits 3 are embedded in the height-adjustable steel plate embedded component 2, the height-adjustable steel plate embedded component 2 is installed in a block installation mode in the installation process, the channel steel frame blocks 211 are installed in the embedded pits 3 in a block mode, the height of each channel steel frame block 211 is adjusted through a height adjusting rod 212, the butt joint parts of the channel steel frame blocks 211 are fixed into a whole, after the left channel steel frame block 211 and the right channel steel frame block 211 are installed, the steel plate blocks 221 are installed on the channel steel frame blocks 211 in a block mode, the upper plane of the left and right height-adjustable steel plate embedded component 2 and the upper plane of the cement foundation 1 are kept to be in the same horizontal plane, if some positions do not present the same horizontal plane, the steel plate blocks 221 at the corresponding positions are opened, and the heights of the channel steel frame blocks 211 at the corresponding positions are adjusted through the height adjusting rods 212, until the requirement that the upper plane of the pavement steel plate 22 and the cement foundation 1 are in the same horizontal plane is met, after the height adjustment is completed, the pavement steel plate 22 is welded to the upper surface of the channel steel frame 21. By arranging the height adjusting rods, the height consistency of the height-adjusting steel plate embedded assemblies on the left side and the right side of the guide rail is quickly, accurately and effectively realized, and the problems of uneven road surface and uncontrollable height difference of two sides caused by insufficient construction precision of the existing civil engineering are solved;
after the height adjustment and welding of the channel steel frame 21 and the pavement steel plate 22 are completed, slurry with high fluidity is diluted in proportion and is injected into the height-adjustable steel plate embedded assembly through the grouting holes 2211, and the slurry in the channel steel frame 21 is filled fully. Through injecting the slurry into the road surface steel sheet, combine the road surface steel sheet, solve the cement road surface and use for a long time and cause the road surface problem of sunkenly uneven.
Foretell track road surface structure because the guide rail both sides all set up the formula of increaseing frame steel sheet subassembly that channel steel frame and road surface steel sheet combined together, they have constituteed the pre-buried subassembly of formula of increaseing steel sheet, and the reinforcing wearability improves service life, reduces the maintenance rate.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (8)
1. A track pavement structure, comprising:
the steel plate height-adjusting type steel plate embedded concrete foundation comprises a cement foundation (1), two groups of height-adjusting type steel plate embedded assemblies (2), two embedded pits (3) and a guide rail (4); wherein the content of the first and second substances,
the guide rail (4) is fixedly paved on the cement foundation (1);
the cement foundations (1) on the two sides of the guide rail (4) are respectively provided with one pre-buried pit (3), and a group of pavement support pre-buried components (2) are paved in each pre-buried pit (3);
the height difference is formed between the upper plane of each group of height-adjustable steel plate embedded assemblies (2) and the upper plane of each embedded pit (3), and a grouting space is arranged inside each group of height-adjustable steel plate embedded assemblies (2).
2. The track pavement structure according to claim 1, wherein the two groups of height-adjustable steel plate embedded assemblies (2) are identical in structure and are respectively composed of a plurality of groups of height-adjustable frame steel plate subassemblies;
each set of elevated frame steel plate subassemblies includes:
the height-adjustable type steel channel frame (21) and the road steel plate (22); wherein the content of the first and second substances,
the height-adjustable channel steel frame (21) is fixedly paved in the embedded pit (3);
the pavement steel plate (22) is laid on the height-adjustable channel steel frame (21), and the top surface of the pavement steel plate (22) is the upper surface of the height-adjustable steel plate embedded assembly (2).
3. The track pavement structure according to claim 2, wherein the elevated channel frame (21) is composed of a channel frame block (211) and a plurality of height adjusting bars (212);
the bottom of the channel steel frame block (211) is fixed in the embedded pit (3);
height adjusting rods (212) are uniformly distributed at four corner positions of the channel steel frame block (211);
the bottom end of the height adjusting rod (212) is fixed in the embedded pit (3), and the upper end of the height adjusting rod is fixed on the channel steel frame block (211) through a nut, so that the height of the height adjusting rod can be adjusted up and down.
4. A track pavement structure according to claim 3, characterized in that the height adjustment bar (212) is of a screw construction.
5. Track pavement structure according to any of claims 2 to 4, characterized in that the pavement steel slab (22) consists of a plurality of steel slabs (221), each steel slab (221) being laid in turn on the elevated channel frame (21).
6. The track pavement structure according to claim 5, wherein the steel plate blocks (221) are distributed with grouting holes (2211) and ventilation holes (2211).
7. A track pavement structure according to any one of claims 1 to 4, characterized in that the guide rail (4) is fixedly laid in the center of the cement foundation (1).
8. Track pavement structure according to any of claims 1 to 4, characterized in that the pre-buried pits (3) on both sides of the guide rail (4) are equidistant from the guide rail (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210505519.XA CN114875724A (en) | 2022-05-10 | 2022-05-10 | Track pavement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210505519.XA CN114875724A (en) | 2022-05-10 | 2022-05-10 | Track pavement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114875724A true CN114875724A (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210505519.XA Pending CN114875724A (en) | 2022-05-10 | 2022-05-10 | Track pavement structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110106569A (en) * | 2010-03-23 | 2011-09-29 | (재)한국건설시험연구소 | A method of construction for mending road |
| AU2014101042A4 (en) * | 2013-08-30 | 2014-10-02 | Csh Engineering Pty Ltd | Method of roadway construction |
| CN105350574A (en) * | 2015-10-29 | 2016-02-24 | 江苏科技大学 | Vehicle impact test photography pit and construction method |
| CN207878662U (en) * | 2018-01-23 | 2018-09-18 | 青建集团股份公司 | Combined type pre-embedded steel slab |
| CN215254749U (en) * | 2021-07-30 | 2021-12-21 | 中冶建工集团有限公司 | Mounting structure of pre-buried steel sheet |
| CN215925715U (en) * | 2021-10-19 | 2022-03-01 | 民航机场建设工程有限公司 | Precast beam pre-buried steel sheet angle adjustment device |
-
2022
- 2022-05-10 CN CN202210505519.XA patent/CN114875724A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110106569A (en) * | 2010-03-23 | 2011-09-29 | (재)한국건설시험연구소 | A method of construction for mending road |
| AU2014101042A4 (en) * | 2013-08-30 | 2014-10-02 | Csh Engineering Pty Ltd | Method of roadway construction |
| CN105350574A (en) * | 2015-10-29 | 2016-02-24 | 江苏科技大学 | Vehicle impact test photography pit and construction method |
| CN207878662U (en) * | 2018-01-23 | 2018-09-18 | 青建集团股份公司 | Combined type pre-embedded steel slab |
| CN215254749U (en) * | 2021-07-30 | 2021-12-21 | 中冶建工集团有限公司 | Mounting structure of pre-buried steel sheet |
| CN215925715U (en) * | 2021-10-19 | 2022-03-01 | 民航机场建设工程有限公司 | Precast beam pre-buried steel sheet angle adjustment device |
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