CN210737256U - Box frame and box frame road bed for road bed - Google Patents
Box frame and box frame road bed for road bed Download PDFInfo
- Publication number
- CN210737256U CN210737256U CN201920955605.4U CN201920955605U CN210737256U CN 210737256 U CN210737256 U CN 210737256U CN 201920955605 U CN201920955605 U CN 201920955605U CN 210737256 U CN210737256 U CN 210737256U
- Authority
- CN
- China
- Prior art keywords
- box
- roadbed
- side wall
- plate
- bottom plate
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Railway Tracks (AREA)
Abstract
The utility model discloses a box frame and box frame road bed for road bed, the box frame road bed includes that the box frame for the road bed of predetermined quantity is formed at vertical arrangement, and the interval has the expansion joint of predetermined length between the adjacent box frame for the road bed; the box-type frame for the roadbed comprises a top plate, a bottom plate and at least two side wall plates positioned between the top plate and the bottom plate, wherein the upper ends and the lower ends of the side wall plates are respectively connected with the top plate and the bottom plate; at least two side wall plates are transversely distributed on the top plate or the bottom plate, and a preset distance is reserved between every two adjacent side wall plates; the box-type framework for the roadbed further comprises at least one transversely closed rectangular cavity which is formed by enclosing the top plate, the bottom plate and the side wall plate; the top plate and the bottom plate extend for a preset length on the outer side of the side wall plate, and the extension length of the top plate is larger than that of the bottom plate. The utility model discloses can reduce high-speed railway road bed construction cost and reduce arable land area occupied.
Description
Technical Field
The utility model relates to a railway roadbed field, concretely relates to box frame and box frame road bed for road bed.
Background
With the improvement of the living standard of people and the development of railway technology, high-speed trains and corresponding high-speed railways are more and more.
In order to ensure safe and smooth operation of the high-speed railway train, the roadbed engineering structure should have sufficient strength, stability and durability. Compared with the middle and western regions, when the high-speed railway is built in the eastern plain region, the natural foundation is difficult to meet the high-standard settlement control requirement of the high-speed railway due to the soft soil property, and foundation reinforcement treatment is required. The traditional trapezoidal subgrade is generally filled by a large amount of high-standard fillers on a natural foundation, the floor area of the foundation is large, and the settlement is difficult to meet the requirement. However, the requirement of the high-speed railway on the filler is high, land resources in plain areas are short, the filler is very lack, the construction cost is greatly increased, the comprehensive cost per kilometer of the high-speed railway has no economic advantage compared with that of a bridge, and a large amount of cultivated land is occupied due to the wide roadbed.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a box frame and box frame road bed for road bed is expected to provide, can reduce high-speed railway road bed construction cost and reduce arable land area occupied.
In order to achieve the above object, the embodiment of the present invention provides a technical solution that:
the embodiment of the utility model provides a box frame for road bed, box frame for road bed includes roof, bottom plate and is located at least two side wall boards between roof, bottom plate, the upper end, the lower extreme of side wall board connect respectively roof and bottom plate; at least two side wall plates are transversely distributed on the top plate or the bottom plate, and a preset distance is reserved between every two adjacent side wall plates; the box-type framework for the roadbed further comprises at least one transversely closed rectangular cavity which is formed by enclosing the top plate, the bottom plate and the side wall plate; the top plate and the bottom plate extend for a preset length on the outer side of the side wall plate, and the extension length of the top plate is larger than that of the bottom plate.
In the above scheme, box frame for the road bed still includes the tubular pile, the tubular pile is located the bottom plate below, the tubular pile certainly the bottom plate extends downwards and predetermines length.
In the above scheme, the tubular pile is fixed to the bottom plate through a raft.
In the above scheme, the number of the side wall plates is two, and the height of the side wall plates is larger than the transverse distance between the two side wall plates.
In the above-described aspect, the box frame for a roadbed is cast using no less than C35 reinforced concrete.
In the scheme, the transverse width of each side wall plate is 0.4-0.6 m, and the transverse distance between every two adjacent side wall plates is 4.6-6.5 m.
In the scheme, the thickness of the top plate is 0.4-0.6 m, and the top plate extends 3.0-3.7 m on the outer side of the side wall plate; the thickness of the bottom plate is 0.8-1.2 meters, and the bottom plate extends 0.9-1.1 meters outside the side wall plate.
The embodiment of the utility model also provides a box frame roadbed, the box frame roadbed comprises a preset number of box frames for the roadbed which are longitudinally arranged, and expansion joints with preset lengths are arranged between the adjacent box frames for the roadbed; the box frame for the roadbed is any one of the box frames for the roadbed, and the side wall plates of the box frame for the roadbed are respectively positioned between two steel rails of two lines.
In the above scheme, the raft is located between two adjacent box type frames for the roadbed, one box type frame for the roadbed is connected to one longitudinal end of the raft, and the other end of the raft is connected to the other box type frame for the roadbed.
In the above scheme, every the both ends of box frame bottom for the road bed all are provided with the tubular pile, and the tubular pile under two adjacent box frames for the road bed is with the expansion joint symmetric distribution between two box frames for the road bed to fix on same raft board.
The box-type framework for the roadbed comprises a top plate, a bottom plate and at least two side wall plates positioned between the top plate and the bottom plate, wherein the upper ends and the lower ends of the side wall plates are respectively connected with the top plate and the bottom plate; at least two side wall plates are transversely distributed on the top plate or the bottom plate, and a preset distance is reserved between every two adjacent side wall plates; the box-type framework for the roadbed further comprises at least one transversely closed rectangular cavity which is formed by enclosing the top plate, the bottom plate and the side wall plate; the top plate and the bottom plate extend to a preset length on the outer side of the side wall plate, and the extension length of the top plate is greater than that of the bottom plate; it is visible, the utility model discloses box frame road bed through the road bed with the box frame replace the filler, can reduce high-speed railway road bed construction cost and reduce arable land area occupied.
Other beneficial effects of the embodiment of the utility model are further explained in combination with specific technical scheme in the concrete implementation manner.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It should be understood that the drawings described below are only a part of the drawings of the embodiments of the present invention, and that other drawings may be obtained by those skilled in the art without inventive effort.
FIG. 1 is a schematic lateral cross-sectional view of a box frame in a box frame roadbed according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a transverse cross-section of a box-shaped frame in a box-shaped frame roadbed according to an embodiment of the present invention;
FIG. 3 is a schematic view of a longitudinal structure of a box-type frame roadbed according to an embodiment of the present invention;
fig. 4 is a schematic plan view of a box-type frame roadbed according to an embodiment of the present invention.
Detailed Description
It should be noted that, unless otherwise specified and limited, the term "connected" in the description of the embodiments of the present invention is to be understood in a broad sense, and for example, the term may be an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and the specific meaning of the term may be understood by those skilled in the art according to specific situations. In the embodiment of the present invention, if the related terms "first \ second \ third" are used, only similar objects are distinguished, and no specific sequence for the objects is represented, it should be understood that "first \ second \ third" may exchange a specific sequence or order when allowed.
The embodiment of the utility model provides a box frame for road bed, box frame for road bed includes roof, bottom plate and is located at least two side wall boards between roof, bottom plate, the upper end, the lower extreme of side wall board connect respectively roof and bottom plate; at least two side wall plates are transversely distributed on the top plate or the bottom plate, and a preset distance is reserved between every two adjacent side wall plates; the box-type framework for the roadbed further comprises at least one transversely closed rectangular cavity which is formed by enclosing the top plate, the bottom plate and the side wall plate; the top plate and the bottom plate extend for a preset length on the outer side of the side wall plate, and the extension length of the top plate is larger than that of the bottom plate.
In an embodiment, box frame for the road bed still includes the tubular pile, the tubular pile is located the bottom plate below, the tubular pile certainly the bottom plate extends the length of predetermineeing downwards. The tubular pile can be directly connected into a bottom soil layer, the bottom soil layer is also called a parent layer and is commonly called a raw soil layer, compared with a surface soil layer, the soil is poorer, the natural settlement of the box-type frame foundation for the roadbed can be further reduced, and the method is an optimal mode.
In one embodiment, the number of side wall panels is two, and the height of the side wall panels is greater than the transverse spacing of the two side wall panels. The side wall panels generally correspond to the railway line, and the line generally comprises two to-and-fro lines, so that two side wall panels are arranged, of course, more side wall panels can be arranged, and the more side wall panels are arranged, the firmer the whole box-type frame for the roadbed is. The height of the side wall plate is larger than the transverse distance between the two side wall plates, so that the strength of the box-type frame for the roadbed in the vertical direction is increased, and the preferred mode is adopted.
In one embodiment, the box frame for a roadbed is cast using notless C35 reinforced concrete, which is a higher strength and, at present, a lower cost, and is a preferred embodiment.
In one embodiment, the lateral width of the side wall plate is 0.4-0.6 m, which is a result of comprehensive consideration of structural strength, cost and self weight, and is a preferable mode; the transverse distance between two adjacent side wall plates is 4.6-6.5 m, and the transverse distance is set according to the line distance between two railways.
In one embodiment, the thickness of the top plate is 0.4-0.6 m, which is a result of comprehensive consideration of structural strength, cost and self weight, and is a preferred mode; the top plate extends for 3.0-3.7 meters outside the side wall plate, and the structure strength, the cost and the road base surface width are comprehensively considered; the thickness of the bottom plate is 0.8-1.2 meters, which is the result of comprehensively considering the structural strength, the cost and the dead weight, and is the preferred mode, and the bottom plate extends 0.9-1.1 meters outside the side wall plate, which is the result of comprehensively considering the structural strength, the cost and the dead weight.
In one embodiment, the tube piles are secured to the base plate by rafts cast of no less than C35 reinforced concrete 0.4 to 0.8 metres thick; is the result of comprehensive consideration of structural strength, cost and settlement control
The embodiment of the utility model also provides a box frame roadbed, the box frame roadbed comprises a preset number of box frames for the roadbed which are longitudinally arranged, and expansion joints with preset lengths are arranged between the adjacent box frames for the roadbed; the box frame for the roadbed is any one of the box frames for the roadbed, and the side wall plates of the box frame for the roadbed are respectively positioned between two steel rails of two lines.
The utility model discloses box frame road bed through the road bed with the box frame replace the filler, can reduce high-speed railway road bed construction cost and reduce arable land area occupied.
In one embodiment, the raft is located between two adjacent box frames for a roadbed, and the raft is connected to one box frame for a roadbed at one longitudinal end and to the other box frame for a roadbed at the other longitudinal end. The foundation settlement can be effectively controlled, and the high stability and the high smoothness of the high-speed railway line are ensured.
In an embodiment, every the both ends of box frame bottom for the road bed all are provided with the tubular pile, and the tubular pile under two adjacent box frames for the road bed is with the expansion joint symmetric distribution between two box frames for the road bed to fix on same raft board. The foundation settlement can be effectively controlled, and the high stability and the high smoothness of the high-speed railway line are ensured.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for the purpose of illustration only and are not intended to limit the invention; moreover, the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art should also be able to obtain all other embodiments without creative efforts according to these embodiments.
Example one
The embodiment provides a box-type frame roadbed, which comprises a preset number of box-type frames for roadbeds, which are longitudinally arranged, wherein expansion joints with preset lengths are arranged between adjacent box-type frames for roadbeds at intervals; the box-type framework for the roadbed can be shown in figure 1 or figure 2, and the side wall plates of the box-type framework for the roadbed are respectively positioned between two steel rails of two lines.
As shown in fig. 1, the box-type framework for a roadbed includes a top plate 11, a bottom plate 12 and two side wall plates 13 located between the top plate 11 and the bottom plate 12, wherein the upper ends and the lower ends of the side wall plates 13 are respectively connected with the top plate 11 and the bottom plate 12; the two side wall plates 13 are distributed in the transverse direction of the top plate 11 or the bottom plate 12, and the two side wall plates 13 are spaced by a preset distance; the top plate 11, the bottom plate 12 and the side wall plate 13 enclose a transverse closed rectangular cavity; the top plate 11 and the bottom plate 12 both extend a preset length outside the side wall plate 13, and the extension length of the top plate 11 is greater than that of the bottom plate 12.
In this embodiment, the height of the side wall plate 13 is greater than the lateral distance between the two side wall plates 13.
In this embodiment, the box frame for a roadbed is cast with no less than C35 reinforced concrete.
In this embodiment, the lateral width of the side wall plate 13 is 0.5 m, the lateral distance between two adjacent side wall plates 13 is 5 m,
in this embodiment, the thickness of the top plate 11 is 0.5 m, the top plate 11 extends 3.3 m outside the side wall plate 13, and the top plate extending 3.3 m outward may also be called as a side wing plate, but for convenience of description, the top plate and the top plate are substantially integrated; the thickness of the bottom plate 12 is 1 meter, and the bottom plate 12 extends 1 meter outside the side wall plate 13.
In this embodiment, the total transverse width of the box-type frame for a roadbed, including the extension of the top plate 11 or the bottom plate 12 to both sides, is 12.6 meters, the longitudinal length is 9.92 meters, and the expansion joint between each two box-type frames for a roadbed is 0.1 meter.
As shown in fig. 2, the box-type frame for a roadbed further includes a pipe pile 21, the pipe pile 21 is located below the bottom plate 12, specifically, the specification of the pipe pile 21 can be determined by settlement analysis and foundation check according to the engineering geological conditions of foundation soil of a planned site, and under general geological conditions, the specification of the pipe pile 21 can be set as follows: the diameter phi of the pile is 0.5 m, the length of the pile is 27 m, and the transverse distance between the piles is 2.0 m.
In the present embodiment, as shown in fig. 3 and 4, the pipe piles 21 are fixed to the bottom plate 12 through rafts 22, the rafts 22 are cast of 0.6 m thick and no less than C35 reinforced concrete, specifically, a cushion layer (not shown in the figure) is further included between the rafts 22 and the pipe piles 21, the cushion layer is cast of 0.2 m thick C15 concrete, and the cushion layer and the rafts 22 are fixed to each other; the bed course is connected with the bottom plate 12, and the raft 22 layer is connected with the tubular pile 21.
In this embodiment, the raft 22 is located between two adjacent box frames for a roadbed, and the raft 22 is connected to one box frame for a roadbed at one longitudinal end and to the other box frame for a roadbed at the other longitudinal end.
In this embodiment, two rows of tubular piles 21 are arranged below each box-type framework for the roadbed and are respectively arranged at two ends of the box-type framework for the roadbed, and the tubular piles 21 below two adjacent box-type frameworks for the roadbed are symmetrically distributed at an expansion joint between the two box-type frameworks for the roadbed and are fixed on the same raft 22; the longitudinal pile spacing of the tubular piles 21 on the same raft 22 is also 2.0 meters.
Note that the dimensions indicated in fig. 1 to 4 are in units of millimeters.
In order to better understand the box-type frame roadbed, the construction process of the box-type frame roadbed is described as follows, and the process comprises the following steps:
step 501: the pipe pile 21 is inserted into the foundation soil. After the tubular pile 21 is inserted into a preset depth, cutting off the redundant piles (exposed out of the ground) at the pile top;
step 502: pouring a C15 concrete cushion layer with the thickness of 0.2 m on the top of the tubular pile 21, wherein the size of the cushion layer is 8 multiplied by 4 m, the cushion layer is uniformly distributed on the tubular pile 21, the cushion layer is uniformly arranged in the longitudinal direction of a railway, and an expansion joint with the thickness of 0.02 m is reserved between every two cushion layers;
step 503: casting a reinforced concrete raft 22 with the thickness of no less than 0.6 m and no less than C35 on the cushion layer, wherein the size of the raft 22 is the same as that of the cushion layer;
step 504: and pouring a box-type frame for the roadbed on the raft plates 22, and finishing the construction of the box-type frame roadbed.
The box type frame for the roadbed in the steps is prefabricated in advance, and can be understood as cast in situ, and if the box type frame for the roadbed is cast in situ, the method further comprises the following steps:
step 505: pouring the reinforced concrete of the bottom plate 12, reserving main steel bars of the reinforced concrete at corresponding positions of the side wall plates 13, wherein the reserved length of the main steel bars is not less than 1.5 m, and the requirement of a steel bar joint is met;
step 506: before the concrete of the bottom plate 12 is initially set, pouring the reinforced concrete of the side wall plate 13, and extending main steel bars of the reinforced concrete out of the top by 0.2-0.3 m;
step 507: after the concrete of the bottom plate 12 and the side wall plate 13 reaches the designed strength, the reinforced concrete of the top plate 11 is constructed, and the main steel bars of the reinforced concrete are fixedly connected with the main steel bars which are reserved and extended out of the side wall plate 13.
Example two
The contents of this embodiment are the same as those of the first embodiment except for a part of the contents, and only the part of the contents different from those of the first embodiment is described below, and the schematic diagram is not shown.
In this embodiment, the lateral width of the side wall plate 13 is 0.4 m, the lateral distance between two adjacent side wall plates 13 is 4.6 m,
in this embodiment, the thickness of the top plate 11 is 0.4 m, and the top plate 11 extends 3.0 m outside the side wall plate 13; the thickness of the bottom plate 12 is 0.8 m, and the bottom plate 12 extends 0.9 m outside the side wall plate 13.
EXAMPLE III
The contents of this embodiment are the same as those of the first embodiment except for a part of the contents, and only the part of the contents different from those of the first embodiment is described below, and the schematic diagram is not shown.
In this embodiment, the lateral width of the side wall plate 13 is 0.6 m, and the lateral distance between two adjacent side wall plates 13 is 6.5 m.
In this embodiment, the thickness of the top plate 11 is 0.6 m, and the top plate 11 extends 3.7 m outside the side wall plate 13; the thickness of the bottom plate 12 is 1.2 meters, and the bottom plate 12 extends 1.1 meters outside the side wall plate 13.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The box-type framework for the roadbed is characterized by comprising a top plate, a bottom plate and at least two side wall plates positioned between the top plate and the bottom plate, wherein the upper ends and the lower ends of the side wall plates are respectively connected with the top plate and the bottom plate; at least two side wall plates are transversely distributed on the top plate or the bottom plate, and a preset distance is reserved between every two adjacent side wall plates; the box-type framework for the roadbed further comprises at least one transversely closed rectangular cavity which is formed by enclosing the top plate, the bottom plate and the side wall plate; the top plate and the bottom plate extend for a preset length on the outer side of the side wall plate, and the extension length of the top plate is larger than that of the bottom plate.
2. The box-type frame for a roadbed of claim 1, further comprising a pipe pile, the pipe pile being located below the bottom plate, the pipe pile extending downward from the bottom plate by a predetermined length.
3. The box-type frame for roadbeds according to claim 2, wherein the pipe piles are fixed to the bottom plate by rafts.
4. A box-type frame for foundations as claimed in claim 1 or 2, wherein the number of the side wall panels is two, and the height of the side wall panels is greater than the lateral distance between the two side wall panels.
5. The box frame for a roadbed of claim 3, wherein the box frame for a roadbed is cast by using non-PC 35 reinforced concrete.
6. The box-type frame for the roadbed of claim 4, wherein the lateral width of the side wall plate is 0.4-0.6 m, and the lateral distance between two adjacent side wall plates is 4.6-6.5 m.
7. The box frame for a roadbed of claim 5, wherein the thickness of the top plate is 0.4 to 0.6 m, and the top plate extends 3.0 to 3.7 m outside the side wall plate; the thickness of the bottom plate is 0.8-1.2 meters, and the bottom plate extends 0.9-1.1 meters outside the side wall plate.
8. The box-type frame roadbed is characterized in that the box-type frame roadbed comprises a preset number of box-type frames for roadbeds which are longitudinally arranged, and expansion joints with preset lengths are arranged between adjacent box-type frames for roadbeds at intervals; the box frame for the roadbed is the box frame for the roadbed as claimed in any one of claims 1 to 7, and side wall plates of the box frame for the roadbed are respectively positioned between two steel rails of two lines.
9. The box-type frame roadbed of claim 8, wherein the box-type frame roadbed further comprises a raft plate, the raft plate is positioned between two adjacent box-type frames for the roadbed, the raft plate is connected with one box-type frame for the roadbed at one longitudinal end, and the other end of the raft plate is connected with the other box-type frame for the roadbed.
10. The box-type frame roadbed according to claim 9, wherein the two ends of the bottom of each roadbed box-type frame are provided with tubular piles, and the tubular piles under two adjacent roadbed box-type frames are symmetrically distributed at the expansion joints between the two roadbed box-type frames and are fixed on the same raft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920955605.4U CN210737256U (en) | 2019-06-24 | 2019-06-24 | Box frame and box frame road bed for road bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920955605.4U CN210737256U (en) | 2019-06-24 | 2019-06-24 | Box frame and box frame road bed for road bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210737256U true CN210737256U (en) | 2020-06-12 |
Family
ID=70990603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920955605.4U Active CN210737256U (en) | 2019-06-24 | 2019-06-24 | Box frame and box frame road bed for road bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210737256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258221A (en) * | 2019-06-24 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of box frame roadbed |
| CN116949871A (en) * | 2023-07-31 | 2023-10-27 | 河北建筑工程学院 | Vibration isolation box type roadbed structure and construction method thereof |
-
2019
- 2019-06-24 CN CN201920955605.4U patent/CN210737256U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258221A (en) * | 2019-06-24 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | A kind of box frame roadbed |
| CN116949871A (en) * | 2023-07-31 | 2023-10-27 | 河北建筑工程学院 | Vibration isolation box type roadbed structure and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102926299B (en) | Railway elevating and fixing device and railway bridge and culvert construction method adopting railway elevating and fixing device | |
| CN110258221A (en) | A kind of box frame roadbed | |
| CN105464008B (en) | Large longitudinal beam system line reinforcement construction device and method | |
| CN210737256U (en) | Box frame and box frame road bed for road bed | |
| CN110258223A (en) | A kind of armored concrete box frame roadbed | |
| CN103397656A (en) | Embedded type joist pile plank structure | |
| CN206090275U (en) | Assembled rectangular concrete -filled steel tube makes up truss bridge | |
| CN106835879A (en) | Highway is laterally without support type peg board formula without earth roadbed and its construction method | |
| CN109162741B (en) | Method for synchronous construction of shield penetrating piston air duct and upper structure of piston air duct | |
| CN113931212A (en) | Road and bridge transition section structure for tramcar and construction method thereof | |
| CN210737255U (en) | Box frame and reinforced concrete box frame road bed for road bed | |
| CN212714296U (en) | Box type roadbed and bridge transition structure | |
| CN108708290A (en) | The case crane span structure hollow structure and cast-in-situ construction method of minor radius railway curve unit | |
| CN105735056A (en) | Method for reinforcing railway through piling girders combined with I-steel cross girders | |
| CN106283938B (en) | The compound framing type support rail girder construction of medium-and low-speed maglev two-wire excavation location pile foundation | |
| CN106283952B (en) | Medium-and low-speed maglev two-wire excavation location pile foundation joist framing type support rail girder construction | |
| CN205259051U (en) | Railway existing line large -span crossbeam system of making somebody a mere figurehead | |
| CN208869876U (en) | Box-structure and a kind of railway high-filled embankment for railway high-filled embankment | |
| CN110761127B (en) | Rock foundation existing high-speed railway embankment force balance side width structure and construction method | |
| CN114541182A (en) | Double-channel stress compensation type high-speed rail platform widening structure and construction method thereof | |
| CN202865708U (en) | Railway aerial fixing device | |
| CN106283945B (en) | Medium-and low-speed maglev traffic engineering two-wire excavation location pile foundation combined type support rail girder construction | |
| CN103437252B (en) | A kind of track bed structure and construction method thereof | |
| CN108824098A (en) | Box-structure and a kind of railway high-filled embankment for railway high-filled embankment | |
| CN205617164U (en) | Low circuit single line location end thorn formula support rail girder segment limit structure within a definite time that puts of well low -speed maglev traffic engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |