CN210134291U - Broad structure of side of existing passenger dedicated line road bed - Google Patents
Broad structure of side of existing passenger dedicated line road bed Download PDFInfo
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- CN210134291U CN210134291U CN201920467306.6U CN201920467306U CN210134291U CN 210134291 U CN210134291 U CN 210134291U CN 201920467306 U CN201920467306 U CN 201920467306U CN 210134291 U CN210134291 U CN 210134291U
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Abstract
The utility model discloses an existing passenger dedicated line roadbed side width structure, which comprises a reinforced concrete pile top plate, a pile casing and roadbed filling, wherein the reinforced concrete pile top plate consists of an inclined plate and a slope toe flat plate, one surface of the inclined plate is tightly attached to an existing railway roadbed, and the other surface of the inclined plate forms a step shape; the slope toe flat plate is formed by extending the bottom of one side of the inclined plate far away from the existing railway roadbed horizontally outwards; the pile head of the pile casing is fixedly connected with the inclined plate and the slope toe flat plate; the roadbed filling is filled in a parallelogram row area with the inclined plate and the slope toe flat plate as adjacent edges in a layered mode. The structure is more direct and effective in blocking the load transmission of the passenger dedicated line side broad roadbed, can directly transfer the railway roadbed load and the train dynamic and static loads to the pile bearing structure of the protective barrel through the reinforced concrete pile top plate, reduces the influence on the passenger dedicated line rigid pile composite foundation as much as possible, and has outstanding cost performance and good engineering application prospect.
Description
Technical Field
The utility model belongs to the technical field of railway engineering, especially, relate to a group wide structure of existing passenger transport special line road bed.
Background
With the expansion of the construction scale of the high-speed railway and the continuous encryption of the road network, the situations of crossing, paralleling and accessing of more and more newly-built railways and the existing passenger dedicated line appear. Because of the strict requirement on the operation safety of the existing passenger dedicated line, when a new line is constructed close to the existing passenger dedicated line, the problem that how to effectively reduce the influence of the newly-built line on the settlement and deformation of the roadbed of the existing passenger dedicated line is a trouble for railway constructors is solved. In order to ensure the safety of the existing passenger dedicated line during operation, the requirement on the smoothness of the track of the existing passenger dedicated line is very strict, the influence of a newly-built railway on the adjacent existing passenger dedicated line is directly related to the safety and comfort of the operation of the newly-built railway, all the construction parties pay high attention, multiple-scheme comparison and argumentation are carried out based on simulation analysis and empirical judgment in the design stage, and construction control and monitoring are enhanced in the construction stage to ensure the safe operation of the existing passenger dedicated line. In the aspect of engineering protection measures for influencing the existing passenger special line by a newly-built railway, at present, stress isolation piles, light soil, pile plate structures and the like are mainly adopted, but because the isolation piles and the pile plate structures are implemented outside the slope foot of the existing passenger special line embankment, the load of the wide part of the existing passenger special line roadbed can be still transmitted to the existing passenger special line roadbed, additional settlement deformation of the existing passenger special line roadbed is caused, and the longitudinal smoothness of the existing passenger special line roadbed is further influenced.
The unit weight of the filler for the broad-sided roadbed is reduced, and the influence of a newly-built railway on the settlement deformation of the roadbed of the existing passenger special line can be reduced to a certain extent by adopting a light soil filling scheme. However, when the filling height of the embankment of the newly-built railway is small, the treatment effect of the light soil filling material is not obvious compared with the train load, and the train load can influence the existing passenger special line no matter whether the embankment is filled with the light soil or not. In view of the above, it is necessary to directly transmit the filling load and the train load of the roadbed with the wide side to the pile foundation bearing structure by changing the load transmission path of the roadbed with the wide side of the railway, so as to develop a novel roadbed side wide structural form of the existing passenger dedicated line and meet the requirement of building a new line close to the existing passenger dedicated line.
Disclosure of Invention
The utility model aims at providing a can effectively reduce newly-built railway circuit and subside the influence of deformation to closing on existing passenger transport special line road bed, wide structure is helped to the extensive existing passenger transport special line road bed of simple structure, engineering application prospect.
Therefore, the technical scheme of the utility model is as follows:
a side width structure of an existing passenger dedicated line roadbed is arranged on one side of the existing passenger dedicated line roadbed and comprises a reinforced concrete pile top plate, a pile casing and roadbed filling, wherein the reinforced concrete pile top plate consists of an inclined plate and a toe flat plate, one side of the inclined plate is tightly attached to the existing railway roadbed, and the other side of the inclined plate forms a step shape; the slope toe flat plate is formed by extending the bottom of one side of the inclined plate far away from the existing railway roadbed horizontally outwards; the pile head of the pile casing is fixedly connected with the inclined plate and the slope toe flat plate; the roadbed filling is filled in a parallelogram row area with the inclined plate and the slope toe flat plate as adjacent edges in a layered mode.
Preferably, the pile casing located under the slant plate is disposed between adjacent rigid piles of the rigid pile composite foundation of the existing railway roadbed.
Preferably, the filling height of the filling soil of each layer of roadbed is the same as the step height of the inclined plate step at the joint position.
The roadbed filling adopts common roadbed filling or light soil filling. And when the height of the broad side roadbed exceeds 4m, the roadbed filling adopts foam light soil.
The utility model has the advantages and positive effect as follows:
compare with traditional light soil scheme and isolation pile scheme, the utility model discloses embodiment blocks the effect more directly effective to the load transmission of newly-built group wide railway roadbed, newly-built passenger transport special line road roadbed group wide region fill out soil load and the whole fender section of thick bamboo pile basis that transmit under the stake roof board of train sound load, effectively reduced newly-built railway circuit and subsided the influence of deformation to closing on existing passenger transport special line road bed, and simultaneously, owing to adopt a fender section of thick bamboo pile structure, during pile construction, can reduce the disturbance influence to existing passenger transport special line road bed, guarantee existing passenger transport special line's operation safety. The structure has small influence on the existing passenger dedicated line, high construction speed, low cost and wide engineering application prospect.
Drawings
FIG. 1 is a cross sectional view of a passenger dedicated line broad roadbed when a concrete pile top plate of the utility model is obliquely arranged;
FIG. 2 is a cross sectional view of the passenger dedicated line broad roadbed when the concrete pile top plate of the utility model is horizontally arranged;
in the figure:
1. reinforced concrete pile top plate 1a, inclined plate 1b and slope toe flat plate
2. Pile casing 3, roadbed filling 4, concrete base and track slab steel rail supporting system
5. Composite foundation of roadbed 6 and rigid pile of existing passenger special line
Detailed Description
The structure of the present invention will be described in detail with reference to the accompanying drawings.
A roadbed slope wide structure of an existing passenger special line comprises a reinforced concrete pile top plate 1, pile casings 2 and roadbed filling 3. Reinforced concrete pile roof 1 divide into along existing road bed side slope slant arrange and along two kinds of forms of bedbed top layer horizontal arrangement, specifically as follows:
referring to fig. 1, when the pile is arranged obliquely, the reinforced concrete pile top plate 1 comprises two parts, namely an oblique plate 1a and a toe flat plate 1b, the position on the oblique plate 1a, which is adjacent to the roadbed filling 3, is set to be in a step form, and the pile head of the pile casing 2 is fixedly connected with the oblique plate 1a and the toe flat plate 1 b. The roadbed filling 3 adopts common roadbed filling and light soil filling. The pile driving position of the pile casing 2 is located between two adjacent rigid piles of the rigid pile composite foundation 6 of the existing railway roadbed 5 and in a roadbed slope toe area, a steel pile casing is pre-sunk in a screw screwing-in mode, a reinforcement cage is hoisted after pore forming, and cast-in-place concrete pile construction is carried out. The pile casing 2 is rigidly connected with the top plate 1 of the reinforced concrete pile to isolate the influence of the load of the train and the load of the roadbed filling 3 on the existing railway roadbed 5.
Referring to fig. 2, when the reinforced concrete pile top plate 1 is horizontally arranged, the pile casing 2 is directly supported below the reinforced concrete pile top plate 1, the concrete base and the track slab steel rail supporting system 4 are laid on the reinforced concrete pile top plate 1, and the pile casing 2 is rigidly connected with the reinforced concrete pile top plate 1 to isolate the influence of train load on the existing railway roadbed 5. The pile driving position of the pile casing 2 is located between adjacent rigid piles of the rigid pile composite foundation 6 of the existing railway roadbed 5, the steel pile casing is sunk in advance in a screw screwing mode, and a reinforcement cage is hoisted after pore forming to carry out concrete cast-in-place pile construction.
The utility model discloses a work progress as follows:
for the existing passenger dedicated line roadbed slope width structure shown in fig. 1 when the reinforced concrete pile top plate is obliquely arranged, firstly, the range of the slope width roadbed is determined, including the height and the width of the slope width roadbed; then, determining a piling area and a piling position of the pile casing 2, wherein the piling position of the pile casing is positioned at a central point between adjacent rigid piles of the rigid pile composite foundation 6 in the range of the existing roadbed slope; and in the plane area of the slope toe, the pile casing is transversely arranged at equal intervals. In the process of driving the pile 2 with the pile casing, adopting a steel casing, applying special pile casing pile sinking equipment, sinking the steel casing in advance in a screw screwing-in mode, hoisting a reinforcement cage after hole forming is completed, and performing concrete cast-in-place pile construction, wherein the grade of concrete is not less than C30; after the construction of the pile casing 2 is completed and the pile casing is maintained to a preset age, pouring construction of the top plate 1 of the reinforced concrete pile is carried out, firstly, a toe flat plate 1b is poured, then an inclined plate 1a is poured, step templates are erected layer by layer when the inclined plate 1a is poured, and the concrete label of the top plate 1 of the reinforced concrete pile is not lower than C40; the roadbed filling 3 adopts a layered filling mode, when the height of the broad side roadbed exceeds 4m, a foam light soil filling scheme is adopted, and otherwise, a common filling scheme is adopted. In the layering compaction process, the filling height of each layer is the same as the step height at the joint position; after the roadbed filling 3 construction is finished, the construction of the concrete base and the track slab steel rail supporting system 4 is carried out, and finally the construction of the roadbed slope wide structure form of the passenger special line is finished.
For the existing passenger dedicated line roadbed side wide structure when the reinforced concrete pile top plate shown in fig. 2 is horizontally arranged, the setting and manufacturing process of the pile casing 2 is basically the same as that described above; when the reinforced concrete pile top plate 1 is poured, firstly, a concrete pouring template is erected, and a suspension mode is adopted below the reinforced concrete pile top plate 1, so that the method is mainly suitable for the situation that the roadbed side width is low; after the reinforced concrete pile top plate 1 is maintained to the design age, a concrete base and a track plate steel rail supporting system 4 are directly arranged on the reinforced concrete pile top plate 1, and then the construction of a newly-built railway roadbed slope width structure horizontally arranged on the reinforced concrete pile top plate is completed.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All equivalent changes, modifications and the like made according to the application scope of the present invention shall fall within the patent coverage of the present invention.
Claims (5)
1. The utility model provides a wide structure of group of existing passenger dedicated line road bed which sets up in one side of existing passenger dedicated line road bed which characterized in that: the wide side structure comprises a reinforced concrete pile top plate (1), a pile casing (2) and roadbed filling (3),
the reinforced concrete pile top plate (1) consists of an inclined plate (1a) and a toe flat plate (1b), one surface of the inclined plate (1a) is tightly attached to an existing railway roadbed (5), and the other surface of the inclined plate forms a step shape; the toe flat plate (1b) is formed by horizontally extending outwards from the bottom of one surface, away from the existing railway roadbed (5), of the inclined plate (1 a);
the pile head of the pile (2) is fixedly connected with the inclined plate (1a) and the slope toe flat plate (1 b);
the roadbed filling (3) is filled in a parallelogram area with the inclined plate (1a) and the slope toe flat plate (1b) as adjacent edges in a layered mode.
2. The widening structure of the roadbed for the existing passenger dedicated line, according to claim 1, is characterized in that: the pile casing (2) positioned below the inclined plate (1a) is arranged between adjacent rigid piles of the rigid pile composite foundation (6) of the existing railway roadbed (5).
3. The widening structure of the existing passenger dedicated line roadbed according to claim 1 or 2, wherein: the filling height of each layer of roadbed filling (3) is the same as the step height of the step of the inclined plate (1a) at the joint position.
4. The widening structure of the roadbed for the existing passenger dedicated line, according to claim 3, is characterized in that: the roadbed filling (3) adopts common roadbed filling or light soil filling.
5. The widening structure of the roadbed for the existing passenger dedicated line, according to claim 4, is characterized in that: and when the height of the broad side roadbed exceeds 4m, the roadbed filling (3) adopts foam light soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467306.6U CN210134291U (en) | 2019-04-09 | 2019-04-09 | Broad structure of side of existing passenger dedicated line road bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920467306.6U CN210134291U (en) | 2019-04-09 | 2019-04-09 | Broad structure of side of existing passenger dedicated line road bed |
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| CN210134291U true CN210134291U (en) | 2020-03-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395061A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Light roadbed structure of underpass operation bridge, design and construction method |
| CN111395062A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Equal-load replacement light soil side wide roadbed structure, design and construction method |
| CN112681022A (en) * | 2020-12-31 | 2021-04-20 | 青岛旭域土工材料股份有限公司 | Construction method for roadbed structure with existing operation railway side width and elevated track |
| CN113152158A (en) * | 2020-06-09 | 2021-07-23 | 北京铁科特种工程技术有限公司 | Foam light soil roadbed structure of heavy haul railway and construction method |
| CN114541183A (en) * | 2022-01-17 | 2022-05-27 | 中铁工程设计咨询集团有限公司 | Integrated double-layer frame type high-speed rail station widening structure and construction method thereof |
-
2019
- 2019-04-09 CN CN201920467306.6U patent/CN210134291U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111395061A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Light roadbed structure of underpass operation bridge, design and construction method |
| CN111395062A (en) * | 2020-03-24 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Equal-load replacement light soil side wide roadbed structure, design and construction method |
| CN111395062B (en) * | 2020-03-24 | 2022-03-08 | 中铁二院工程集团有限责任公司 | Equal-load replacement light soil side wide roadbed structure, design and construction method |
| CN113152158A (en) * | 2020-06-09 | 2021-07-23 | 北京铁科特种工程技术有限公司 | Foam light soil roadbed structure of heavy haul railway and construction method |
| CN112681022A (en) * | 2020-12-31 | 2021-04-20 | 青岛旭域土工材料股份有限公司 | Construction method for roadbed structure with existing operation railway side width and elevated track |
| CN114541183A (en) * | 2022-01-17 | 2022-05-27 | 中铁工程设计咨询集团有限公司 | Integrated double-layer frame type high-speed rail station widening structure and construction method thereof |
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