CN215829168U - Barricade type roadbed device for controlling settlement of adjacent existing lines - Google Patents
Barricade type roadbed device for controlling settlement of adjacent existing lines Download PDFInfo
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- CN215829168U CN215829168U CN202122397082.6U CN202122397082U CN215829168U CN 215829168 U CN215829168 U CN 215829168U CN 202122397082 U CN202122397082 U CN 202122397082U CN 215829168 U CN215829168 U CN 215829168U
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Abstract
The utility model discloses a retaining wall type roadbed device for controlling sedimentation of an existing railway line, and relates to the technical field of building engineering. According to the utility model, through the arrangement of the retaining wall type roadbed, the influence of a newly filled soil body in the wall on the soil body around the existing line of the railway outside the wall can be effectively resisted, and differential settlement of the transition sections of the new roadbed and the old roadbed can be effectively reduced.
Description
Technical Field
The utility model relates to the technical field of constructional engineering, in particular to a retaining wall type roadbed device for controlling the settlement of an adjacent existing line.
Background
In recent years, according to the needs of national economic development and the gradual improvement of railway construction technical level, the national railway network is continuously perfected, more and more upgrading and reconstruction projects are carried out on the existing railway, the high-speed railway for opening operation inevitably needs to be crossed, parallel and wide with a newly-built railway, and the like. In view of the above, a retaining wall type roadbed device for controlling the settlement of an adjacent existing line is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a retaining wall type roadbed device for controlling the settlement of an adjacent existing line, which aims to overcome the defect that a new roadbed and an old roadbed generate overlarge uneven settlement in the roadbed slope filling process. In order to achieve the purpose, the utility model provides the following technical scheme:
a retaining wall type roadbed device for controlling sedimentation of an adjacent existing line comprises the existing line and a new line of a railway, wherein retaining wall type roadbeds are symmetrically arranged on the new line of the railway, each retaining wall type roadbed specifically comprises a cantilever retaining wall and a cushion layer, the bottom of the cantilever retaining wall is positioned below a roadbed of the existing line of the railway, the top surface of the cantilever retaining wall exceeds the roadbed of the existing line of the railway, the cushion layer is fixedly arranged below the cantilever retaining wall, the cantilever retaining wall is of a right-angle trapezoid structure, and the upper surface of the cantilever retaining wall is obliquely arranged;
a plurality of groups of transversely arranged high-pressure jet grouting piles are arranged below the retaining wall type roadbed, and the length of each group of high-pressure jet grouting piles is gradually reduced from the front side to the rear side;
an isolation pile is arranged between the existing railway line and the newly-built railway line, a first metal isolation net is arranged on one side, close to the existing railway line, of the isolation pile, the first metal isolation net is arranged above a base level of the existing railway line, and the isolation pile is arranged below the base level of the existing railway line.
As a further scheme of the utility model: the isolation pile is a precast pile and is formed by combining plywood and a steel pipe.
As a further scheme of the utility model: and a second metal isolation net is arranged in the middle of the retaining wall type roadbed.
As a further scheme of the utility model: and a geogrid is arranged between the cantilever retaining wall and the cushion layer.
As a further scheme of the utility model: and a filling layer is arranged between the retaining wall type roadbeds, and a filler transportation and unloading area is arranged above the filling layer.
Has the advantages that:
1. the utility model provides a retaining wall type roadbed, which can effectively resist the influence of a newly filled soil body in a wall on a soil body around an existing line of a railway outside the wall, effectively reduce differential settlement of a transition section of the new roadbed and the old roadbed, and meanwhile, the retaining wall type roadbed is fixed by matching with a high-pressure jet grouting pile, and meanwhile, the problem of limited field of railway construction operation can be effectively solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the longitudinal cross-sectional structure of the cantilever retaining wall of the present invention;
FIG. 3 is a flow chart of the construction process of the present invention;
in the figure: 1. a first metal isolation net; 2. plywood; 3. a steel pipe; 4. high-pressure jet grouting piles; 5. a cantilever retaining wall; 6. a second metal isolation net; 7. a cushion layer; 8. a filler transport and discharge zone; 9. a geogrid; 10. and (5) filling the layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides the following technical scheme:
as shown in fig. 1-2, a retaining wall type roadbed device for controlling the settlement of an existing railway comprises an existing railway line and a new railway line, wherein the new railway line is symmetrically provided with retaining wall type roadbeds, the retaining wall type roadbeds specifically comprise a cantilever retaining wall 5 and a cushion layer 7, the bottom of the cantilever retaining wall 5 is positioned below the roadbed of the existing railway line, the top surface of the cantilever retaining wall 5 exceeds the roadbed surface of the existing railway, the cushion layer 7 is fixedly arranged below the cantilever retaining wall 5, the cantilever retaining wall 5 is of a right-angle trapezoid structure, the upper surface of the cantilever retaining wall 5 is obliquely arranged, the wall top of the cantilever retaining wall 5 is higher than the existing roadbed of the railway, and keep certain distance with the existing line centroid of the railway, the cantilever retaining wall 5 can effectively resist the influence of the new soil filled in the wall on the peripheral soil of the existing line of the railway outside the wall, effectively reduce the differential settlement of the transition section of the new and old roadbed;
a plurality of groups of transversely arranged high-pressure jet grouting piles 4 are arranged below the retaining wall type roadbed, a plurality of high-pressure jet grouting piles 4 are arranged in each group, the lengths of the high-pressure jet grouting piles are gradually decreased from the front side to the rear side, the high-pressure jet grouting piles 4 are deeply arranged in the foundation, the lengths of the high-pressure jet grouting piles are gradually decreased, materials are saved, the retaining wall type roadbed can be well reinforced, meanwhile, the problem that the site of railway construction operation is limited can be effectively solved by adopting the high-pressure jet grouting piles 4, the construction area is small, the vibration is small, and the noise is low;
the isolation pile is arranged between the existing railway line and the newly-built railway line, the metal isolation net 1 is arranged on one side, close to the existing railway line, of the isolation pile, the metal isolation net 1 is arranged above a foundation surface of the existing railway line, the isolation pile is arranged below the foundation surface of the existing railway line, the isolation pile can effectively reduce additional uneven settlement of vertical loads of the newly-built railway line on the foundation of the existing railway line, safety and comfortableness of an operation line are guaranteed, and the metal isolation net 1 can play a role in blocking and protecting.
Keep apart the stake for the precast pile, keep apart the stake and form by plywood 2 and 3 combinations of steel pipe, so set up, can strengthen the structural stability who keeps apart the stake.
And a second metal isolation net 6 is arranged in the middle of the retaining wall type roadbed, and the second metal isolation net 6 can effectively isolate soil and sand and prevent the soil from collapsing down towards the existing railway line.
And a geogrid 9 is arranged between the cantilever retaining wall 5 and the cushion layer 7, and the geogrid 9 can effectively improve the bearing capacity of the roadbed.
Be equipped with filling layer 10 between two barricade formula roadbeds, filling layer 10 top is equipped with the transportation of packing and the district 8 of unloading, can carry out the road bed and fill in the filling layer 10, is convenient for stabilize the structure of barricade formula road bed, can carry out the transportation and the process of unloading of packing on the transportation of packing and the district 8 of unloading.
As shown in fig. 3, the retaining wall type roadbed device for controlling the settlement of the adjacent existing line provided by the utility model comprises the following specific construction steps:
1. before construction, arranging a metal isolation net I1 outside an existing road shoulder of a railway to replace an existing fence, wherein the height of the isolation net is 1.8m, connecting the metal isolation net I to the existing protection fence in a front-back direction to form a closed state, removing the existing fence outside the metal isolation net I1 after the closed state, arranging a metal upright post at intervals of the metal isolation net I1, burying the upright post foundation by adopting manual pit digging, keeping the foundation at a certain burial depth, arranging a guy rope tie isolation net at intervals of the outer side of the hard isolation, performing blocking construction by adopting the hard isolation, controlling the length of construction sections within the range of 20-50 m, and ensuring that all operations within the section length range are completed within skylight time to ensure construction safety and business line driving safety;
2. after the first metal isolation net 1 is applied, the site is subjected to surface cleaning, primary leveling and compaction according to the drainage direction and the drainage gradient of the ditch, so that the drainage gradient is met; determining a design elevation of the flat field, and using the design elevation as a basis for calculating the engineering quantity of the excavated and filled earthwork, carrying out earthwork balance allocation, selecting construction machinery and formulating a construction scheme;
3. the steel pipes 3 and the plywood 2 are adopted to shield the existing foundation soil close to the business line side, the distance between the steel pipes 3 is 1m, the steel pipes are driven into the position 1m below an excavation surface, the top of the steel pipe 3 is level with a road base surface, the plywood 2 and the steel pipes 3 are firmly bound by iron wires, and the bottom of a foundation pit is provided with a high sandbag protection leg, so that the additional uneven settlement of the vertical load of a newly-built railway line on the existing railway line foundation can be effectively reduced, and the safety and the comfort of an operation line are ensured;
4. the foundation of the upward line cantilever retaining wall 5 is reinforced by adopting a high-pressure jet grouting pile 4;
5. the roadbed is protected by a cantilever retaining wall 5 in the part, which is connected in sequence, higher than the business line, of the roadbed, the bottom surface of the cantilever retaining wall 5 is positioned below a roadbed of an existing railway, a cushion layer 7 is arranged below the bottom surface of the cantilever retaining wall 5, the top of the wall is higher than the roadbed of the existing railway and keeps a certain distance with a centroid of the existing railway, the construction of the cantilever retaining wall 5 is poured in two stages, the first stage is poured to 2.5m above the original ground, the rest part is poured in the second stage, and the construction stage is divided into two parts, namely reinforcing steel bar construction and template construction;
6. cantilever barricade 5 road bed is filled, at shingle nail mid-mounting metal separation net two 6, carries out the road bed filling in the filling layer 10 after the installation is accomplished again, and the district 8 of unloading is unified to be moved deviating from the business line side in the filler transportation, is transported the shop by loader or excavator to the filler, is favorable to the safe operation of the existing line of railway, accomplishes whole construction promptly after the road bed filling.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not exhaustive and do not limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The utility model provides a control is neighbouring barricade formula road bed device that existing line subsides which characterized in that: the novel railway comprises an existing railway line and a new railway line, wherein retaining wall type roadbeds are symmetrically arranged on the new railway line, each retaining wall type roadbed specifically comprises a cantilever retaining wall (5) and a cushion layer (7), the bottom of the cantilever retaining wall (5) is positioned below a roadbed of the existing railway line, the top surface of the cantilever retaining wall (5) exceeds the roadbed of the existing railway line, the cushion layer (7) is fixedly arranged below the cantilever retaining wall (5), the cantilever retaining wall (5) is of a right-angle trapezoidal structure, and the upper surface of the cantilever retaining wall (5) is obliquely arranged;
a plurality of groups of transversely arranged high-pressure jet grouting piles (4) are arranged below the retaining wall type roadbed, a plurality of high-pressure jet grouting piles (4) are arranged in each group, and the lengths of the high-pressure jet grouting piles are gradually reduced from the front side to the rear side;
an isolation pile is arranged between the existing railway line and the newly-built railway line, a first metal isolation net (1) is arranged on one side, close to the existing railway line, of the isolation pile, the first metal isolation net (1) is arranged above a roadbed of the existing railway line, and the isolation pile is arranged below the roadbed of the existing railway line.
2. The retaining wall type roadbed device for controlling the settlement of the adjacent existing line according to the claim 1, wherein: the isolation pile is a precast pile and is formed by combining a plywood (2) and a steel pipe (3).
3. The retaining wall type roadbed device for controlling the settlement of the adjacent existing line according to the claim 1, wherein: and a second metal isolation net (6) is arranged in the middle of the retaining wall type roadbed.
4. The retaining wall type roadbed device for controlling the settlement of the adjacent existing line according to the claim 1, wherein: and a geogrid (9) is arranged between the cantilever retaining wall (5) and the cushion layer (7).
5. The retaining wall type roadbed device for controlling the settlement of the adjacent existing line according to the claim 1, wherein: and a filling layer (10) is arranged between the retaining wall type roadbeds, and a filler transportation and unloading area (8) is arranged above the filling layer (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397082.6U CN215829168U (en) | 2021-09-30 | 2021-09-30 | Barricade type roadbed device for controlling settlement of adjacent existing lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122397082.6U CN215829168U (en) | 2021-09-30 | 2021-09-30 | Barricade type roadbed device for controlling settlement of adjacent existing lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215829168U true CN215829168U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122397082.6U Active CN215829168U (en) | 2021-09-30 | 2021-09-30 | Barricade type roadbed device for controlling settlement of adjacent existing lines |
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| Country | Link |
|---|---|
| CN (1) | CN215829168U (en) |
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2021
- 2021-09-30 CN CN202122397082.6U patent/CN215829168U/en active Active
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