CN217203387U - U-shaped stress compensation type high-speed rail station widening structure - Google Patents
U-shaped stress compensation type high-speed rail station widening structure Download PDFInfo
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- CN217203387U CN217203387U CN202220118152.1U CN202220118152U CN217203387U CN 217203387 U CN217203387 U CN 217203387U CN 202220118152 U CN202220118152 U CN 202220118152U CN 217203387 U CN217203387 U CN 217203387U
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Abstract
The utility model provides a structure is widened to U type stress compensation formula high-speed railway station, a serial communication port, include: the device comprises a plurality of isolation piles, a multi-group pipe pile group, a U-shaped structure, a filling body, a double-layer overhead structure, an existing roadbed, a newly-built roadbed and steps; each group of tubular pile group is arranged in the stratum at the inner side of the isolation pile, each tubular pile group comprises a plurality of tubular piles, and a U-shaped structure is fixed at the top end of each tubular pile; the top of U type structure is fixed with double-deck overhead structure, double-deck overhead structure includes: a platform layer and a canopy layer; the platform layer is fixed on the top end of the U-shaped structure, and the canopy layer is fixed on the top end of the platform layer. Use the utility model discloses can guarantee existing high-speed railway safe normal operating, and it has that the additional deformation influences little, the construction disturbance is little, economy is reasonable, the construction advantage such as convenient.
Description
Technical Field
The application relates to the technical field of high-speed railway roadbed engineering, in particular to a U-shaped stress compensation type high-speed railway station widening structure.
Background
The condition that a newly-built line is adjacent to an existing high-speed rail is more and more caused by large-scale construction of a high-speed railway, and in many cases, a roadbed construction process is carried out on the premise of ensuring normal operation of the existing high-speed rail, so a station roadbed widening project caused by introducing an existing high-speed rail station into a new high-speed rail becomes a key node project of the line gradually. In the prior art, the widening scheme of the high-speed rail station roadbed is mainly divided into a light soil scheme and a stress isolation scheme. Wherein, the former means that foam lightweight concrete with smaller weight is adopted to replace part of high-speed rail new line roadbed filling materials adjacent to the existing roadbed; the latter refers to the placement of stress isolation piles between new and old high-speed rail foundations to block or reduce the transmission of stresses in the formation.
The widening scheme of the high-speed railway subgrade is limited by the position relation of adjacent subgrades, or the problems of stability and high cost of large-volume pouring of light soil cannot be solved, and large additional load still can be caused at the position adjacent to the existing subgrade, so that the strict settlement deformation control requirement of the high-speed railway is difficult to meet.
In summary, the widening scheme for the station subgrade in the prior art has the disadvantages as described above, so that a better station widening structure is designed, the station subgrade widening structure can be lighter, structured and constructed quickly under the condition that a high-speed train does not stop, the influence on the existing high-speed train station facilities and operation safety can be avoided, and the problem to be solved urgently in the field is solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a structure is widened to U type stress compensation formula high-speed railway station, its additional deformation influence is little, the construction disturbance is little, economical and reasonable, the construction is convenient, and can guarantee that existing high-speed railway normally operates safely.
The technical scheme of the utility model specifically be so realized:
the utility model provides a structure is widened at high-speed railway station of U type stress compensation formula, includes: the device comprises a plurality of isolation piles, a multi-group pipe pile group, a U-shaped structure, a filling body, a double-layer overhead structure, an existing roadbed, a newly-built roadbed and steps;
steps are respectively arranged on the inner side slopes of the newly built roadbed and the existing roadbed;
the pile top of each isolation pile is positioned at the slope toe of the inner side slope of the existing roadbed, and the pile bottom of each isolation pile is positioned in the stratum;
each group of tubular pile groups is arranged in the stratum at the inner side of the isolation pile, each group of tubular pile groups comprises a plurality of tubular piles, and the top ends of the tubular piles are fixed with U-shaped structures;
a filling body is arranged inside the U-shaped structure;
the top of U type structure is fixed with double-deck overhead structure, double-deck overhead structure includes: a platform layer and a canopy layer; the platform layer is fixed at the top end of the U-shaped structure, and the canopy layer is fixed at the top end of the platform layer;
the step with form between the double-deck overhead structure and fall three horn regions, it includes to fall three horn regions: the foundation bed comprises a foundation bed surface layer, a foundation bed bottom layer and a foundation bed body.
Preferably, the platform layer comprises a sheet pile wall and a platform, the bottom end of the sheet pile wall is fixed to the top end of the U-shaped structure, and the platform is fixed to the top end of the sheet pile wall.
Preferably, the canopy layer includes canopy post, platform passageway and canopy, the upper surface symmetry of platform is fixed with the canopy post, form the platform passageway between the canopy post of mutual symmetry, the canopy is fixed the top of canopy post, the canopy erects through the canopy post in the top of platform passageway.
Preferably, the filler is foamed lightweight concrete.
Preferably, the roadbed body is positioned at the lowest end of the inverted triangular area; the foundation bed bottom layer is positioned at the upper end of the roadbed body; the surface layer of the foundation bed is positioned at the upper end of the bottom layer of the foundation bed.
Preferably, the surface layer of the foundation bed is formed by filling A group of materials; the bottom layer of the foundation bed is formed by pouring foam lightweight concrete I; the roadbed body is formed by pouring foam lightweight concrete II.
Preferably, the upper surface of the existing roadbed is an existing roadbed surface; the upper surface of the newly-built roadbed is a newly-built roadbed; the existing roadbed surface and the newly-built roadbed surface are flush with the top surface of the surface layer of the foundation bed.
Preferably, the pile top of the tubular pile is reserved with a steel bar, and the steel bar extends into the bottom plate of the U-shaped structure.
Preferably, each group of tubular pile group comprises 4 tubular piles, wherein every two tubular piles in the 4 tubular piles are paired, and the distance between two tubular piles in one pair is a first distance; the distance between two adjacent pairs of tubular piles in the same tubular pile group is a second interval; and the distance between every two adjacent groups of pipe pile groups is a third interval.
Preferably, the U-shaped structure is made of reinforced concrete.
As above it is clear the utility model discloses in, carry out reasonable design and optimization through widening the structure to high-speed railway station to can effectively reduce existing road bed additional deformation, reduce the construction risk, reduce the influence of construction to existing high-speed railway equipment and operation safety, have advantages such as prefabrication, lightweight, commonality are strong, can be under construction fast simultaneously.
Drawings
Fig. 1 is the embodiment of the utility model provides an in the embodiment, the section sketch map of structure is widened to U type stress compensation formula high-speed railway station.
Detailed Description
In order to make the technical solution and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a structure is widened to U type stress compensation formula high-speed railway station, include: the construction method comprises the following steps of (1) forming a plurality of isolation piles 9, a multi-group pipe pile group, a U-shaped structure 7, a filling body 6, a double-layer overhead structure, an existing roadbed 16, a newly-built roadbed 15 and steps 21;
the pile top of each isolation pile 9 is positioned at the slope toe of the inner side slope of the existing roadbed 16, and the pile bottom of each isolation pile is positioned in the stratum;
each group of pipe pile groups is arranged in the stratum at the inner side of the isolation pile 9, each group of pipe pile groups comprises a plurality of pipe piles 8, and the top ends of the pipe piles 8 are fixed with U-shaped structures 7;
a filling body 6 is arranged inside the U-shaped structure 7;
The technical scheme of the utility model, can use multiple implementation method to realize foretell U type stress compensation formula high-speed railway station and widen the structure. The technical solution of the present invention will be described in detail below by taking one implementation manner as an example.
For example, preferably, in an embodiment of the present invention, as shown in fig. 1, the plurality of isolation pillars 9 are distributed along the length direction of the platform (along the length direction of the platform refers to the direction perpendicular to the cross section in fig. 1); every keep apart the pile bolck of stake 9 and be located the toe of slope of existing road bed side slope, its pile bottom be located the stratum in with the same horizontal depth department of lower extreme of the pile body in the existing foundation to can guarantee that it inserts than being not more than 1: 1.3, meeting the specification.
Preferably, the isolation piles 9 can be manufactured by adopting a mode of drilling holes at intervals by rotary drilling and pouring concrete in time after the holes are formed.
Preferably, the diameter of the isolation piles 9 may be 1.0m, and the distance between every two adjacent isolation piles along the length direction of the platform may be 3.0 m.
For another example, preferably, in an embodiment of the present invention, the tubular pile 8 may be prefabricated by a pre-tensioning method, and then the tubular pile 8 is pressed into a prefabricated position by a static pressure method.
The preferred, the pile top of tubular pile 8 is reserved there is the reinforcing bar, the reinforcing bar can stretch into in the bottom plate of U type structure 7 to can ensure that the reinforcing bar that tubular pile top was reserved can be firm with reinforcement in the bottom plate of U type structure, make U type structure with the connection of tubular pile is more reliable.
In addition, as an example, in a preferred embodiment of the present invention, as shown in fig. 1, the multiple groups of pipe piles are distributed along the length direction of the platform; each group of tubular pile group can comprise 4 tubular piles 8, wherein every two tubular piles in the 4 tubular piles are paired, and the distance between every two tubular piles in the paired tubular piles is a first distance a; the distance between two adjacent pairs of tubular piles in the same tubular pile group is a second distance b; and the distance between every two adjacent groups of pipe pile groups along the length direction of the platform is a third interval.
Preferably, the first distance a may be 1.8m, the second distance b may be 4.5m, the third distance may be 2.0m, and the diameter of the tubular pile 8 may be 0.6 m.
Preferably, the pile lengths of the isolation piles 9 and the pipe piles 8 can be determined by bearing capacity calculation according to stratum distribution.
In addition, as an example, in a preferred embodiment of the present invention, a U-shaped structure 7 is fixed to the top end of the tubular pile 8.
Preferably, the U-shaped structure 7 may be made of reinforced concrete and disposed in a trench excavated in advance, and a bottom plate of the U-shaped structure 7 is fixedly connected to a pile top of the tubular pile 8.
Preferably, the U-shaped structure 7 may have a width of 9.3m, a height of 8m and a wall thickness of 0.7m, and the length of the U-shaped structure along the length of the platform may be determined according to the actual length of the platform.
Furthermore, as an example, in a preferred embodiment of the present invention, the U-shaped structure 7 is internally poured with a filler 6.
Preferably, the filling body 6 may be foamed lightweight concrete, and may be cast in layers.
In addition, as an example, in a preferred embodiment of the present invention, a double-layer overhead structure is fixed to the top end of the U-shaped structure;
the double-deck overhead structure includes: a platform layer and a canopy layer;
the platform layer comprises a sheet pile wall 5 and a platform 3, the bottom end of the sheet pile wall 5 is fixed at the top end of the U-shaped structure, and the platform 3 is fixed at the top end of the sheet pile wall 5;
canopy layer includes canopy post 2, platform passageway 4 and canopy 1, the upper surface symmetry of platform 3 is fixed with canopy post 2, form platform passageway 4 between the canopy post 2 of mutual symmetry, canopy 1 is fixed the top of canopy post, canopy 1 erects through canopy post 2 the top of platform passageway 4.
A double-layer overhead structure is arranged above the U-shaped structure 7, wherein the lower layer is a pile plate wall supporting platform floor slab, and the upper layer is a canopy column supporting canopy. Adopt double-deck frame construction to replace conventional filler road bed, can directly set up platform and canopy in double-deck frame construction, and reduced newly-built road bed load.
In addition, as an example, in a preferred embodiment of the present invention, an inverted triangle area is formed between the step 21 and the pile plate wall 5, and the inverted triangle area includes: a foundation bed surface layer 10, a foundation bed bottom layer 11 and a roadbed body 12; the roadbed body 12 is located at the lowest end of the inverted triangular region, the foundation bed bottom layer 11 is located at the upper end of the roadbed body 12, and the foundation bed surface layer 10 is located at the upper end of the foundation bed bottom layer 11.
Preferably, the bed surface layer 10 can be filled by using group A materials; the foundation bed bottom layer 11 can be formed by pouring foam lightweight concrete I; the roadbed body 12 can be formed by pouring foam lightweight concrete II.
Through the optimization of the widening structure and the use of a new material, foam light concrete is poured in an inverted triangular area formed between the step and the double-layer overhead structure, so that the dead weight of a newly-built roadbed can be obviously reduced, and the additional deformation is effectively reduced.
Preferably, the width of the step 21 may be 1.0m, and the height may be 0.7 m.
Preferably, the conventional roadbed filling part in the newly built station yard can be filled in a layered mode by using conventional fillers until the design elevation is reached.
Additionally, as an example, in a preferred embodiment of the present invention, the upper surface of the existing roadbed 16 is an existing roadbed surface 14; the upper surface of the newly-built roadbed 15 is a newly-built roadbed 13; the existing subgrade surface 14 and the newly built subgrade surface 13 can be flush with the top surface of the bed skin 10.
Preferably, the newly-built roadbed 15 can be formed by filling conventional filling materials.
Preferably, the details of the formation are determined based on actual geology.
In summary, in the technical solution of the present invention, since the station widening structure is optimized and the novel material is used, the new station widening structure can be widely applied to roadbed widening engineering caused by introducing a new high-speed railway into an existing station; by adopting the station widening structure of the utility model, even under the conditions of more railway equipment, obviously limited construction site and short construction skylight time, the construction of the roadbed widening engineering of the high-speed railway station can be carried out under the normal operation condition of the existing railway; the additional deformation of the existing roadbed can be effectively reduced, the construction risk is reduced, and the influence of field construction on the existing high-speed rail equipment and the operation safety is reduced; additionally, the utility model provides a structure is widened to the station has advantages such as prefabrication, light-duty, the commonality is strong, can be under construction fast.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a structure is widened to U type stress compensation formula high-speed railway station which characterized in that includes: the device comprises a plurality of isolation piles, a multi-group pipe pile group, a U-shaped structure, a filling body, a double-layer overhead structure, an existing roadbed, a newly-built roadbed and steps;
steps are respectively arranged on the inner side slopes of the newly built roadbed and the existing roadbed;
the pile top of each isolation pile is positioned at the slope toe of the inner side slope of the existing roadbed, and the pile bottom of each isolation pile is positioned in the stratum;
each group of tubular pile groups is arranged in the stratum at the inner side of the isolation pile, each group of tubular pile groups comprises a plurality of tubular piles, and the top ends of the tubular piles are fixed with U-shaped structures;
a filling body is arranged inside the U-shaped structure;
the top of U type structure is fixed with double-deck overhead structure, double-deck overhead structure includes: a platform layer and a canopy layer; the platform layer is fixed at the top end of the U-shaped structure, and the canopy layer is fixed at the top end of the platform layer;
the step with form between the double-deck overhead structure and fall three horn regions, it includes to fall three horn regions: the foundation bed comprises a foundation bed surface layer, a foundation bed bottom layer and a foundation bed body.
2. The station widening structure according to claim 1, wherein the station platform layer comprises a sheet pile wall and a platform, the bottom end of the sheet pile wall is fixed to the top end of the U-shaped structure, and the platform is fixed to the top end of the sheet pile wall.
3. The station widening structure according to claim 2, wherein the canopy layer comprises canopy columns, platform channels and a canopy, the canopy columns are symmetrically fixed on the upper surface of the platform, the platform channels are formed between the mutually symmetrical canopy columns, the canopy is fixed at the top ends of the canopy columns, and the canopy is erected above the platform channels through the canopy columns.
4. The station widening structure according to claim 1, wherein the filling body is foamed lightweight concrete.
5. The station widening structure according to claim 1, wherein the roadbed body is located at the lowest end of the inverted triangular area; the foundation bed bottom layer is positioned at the upper end of the roadbed body; the surface layer of the foundation bed is positioned at the upper end of the bottom layer of the foundation bed.
6. The station widening structure according to claim 5, wherein the surface layer of the foundation bed is formed by filling A group of materials; the bottom layer of the foundation bed is formed by pouring foam lightweight concrete I; the roadbed body is formed by pouring foam lightweight concrete II.
7. The station widening structure according to claim 6, wherein the upper surface of the existing roadbed is an existing roadbed surface; the upper surface of the newly-built roadbed is a newly-built roadbed; the existing roadbed surface and the newly-built roadbed surface are flush with the top surface of the surface layer of the foundation bed.
8. The station widening structure according to claim 1, wherein reinforcing steel bars are reserved at pile tops of the tubular piles, and the reinforcing steel bars extend into a bottom plate of the U-shaped structure.
9. The station widening structure according to claim 1, wherein each group of pipe pile groups comprises 4 pipe piles, wherein every two pipe piles in the 4 pipe piles are paired, and the distance between the two pipe piles in one pair is a first distance; the distance between two adjacent pairs of tubular piles in the same tubular pile group is a second interval; and the distance between every two adjacent groups of pipe pile groups is a third interval.
10. The station widening structure according to claim 1, characterized in that the U-shaped structure is made of reinforced concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220118152.1U CN217203387U (en) | 2022-01-17 | 2022-01-17 | U-shaped stress compensation type high-speed rail station widening structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220118152.1U CN217203387U (en) | 2022-01-17 | 2022-01-17 | U-shaped stress compensation type high-speed rail station widening structure |
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| Publication Number | Publication Date |
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| CN217203387U true CN217203387U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220118152.1U Active CN217203387U (en) | 2022-01-17 | 2022-01-17 | U-shaped stress compensation type high-speed rail station widening structure |
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| CN (1) | CN217203387U (en) |
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- 2022-01-17 CN CN202220118152.1U patent/CN217203387U/en active Active
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