CN220952731U - Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway - Google Patents
Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway Download PDFInfo
- Publication number
- CN220952731U CN220952731U CN202322467002.9U CN202322467002U CN220952731U CN 220952731 U CN220952731 U CN 220952731U CN 202322467002 U CN202322467002 U CN 202322467002U CN 220952731 U CN220952731 U CN 220952731U
- Authority
- CN
- China
- Prior art keywords
- embankment
- screw pile
- pile
- screw
- speed railway
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 49
- 239000011435 rock Substances 0.000 claims abstract description 18
- 239000002344 surface layer Substances 0.000 claims abstract description 10
- 239000004575 stone Substances 0.000 claims description 17
- 238000005056 compaction Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Railway Tracks (AREA)
Abstract
The utility model provides a red layer mudstone screw pile composite roadbed of a ballastless track of a high-speed railway, which relates to the technical field of high-speed railways and comprises a foundation bed, wherein the foundation bed comprises a foundation bed surface layer and a foundation bed bottom layer, and the foundation bed surface layer is arranged above the foundation bed bottom layer; the embankment is arranged below the foundation bed and is a red mud rock embankment; the foundation is arranged below the embankment; reinforcing structure, reinforcing structure set up in inside the embankment, reinforcing structure includes screw pile crowd and rubble bed course, screw pile crowd includes a plurality of screw pile and pile cap, the screw pile vertical set up in the embankment, every the top of screw pile all is equipped with the pile cap, the rubble bed course set up in the screw pile crowd the top surface with between the top surface of embankment. The utility model improves the integrity and stability of the red mud rock screw pile composite roadbed of the ballastless track of the high-speed railway on the basis of saving engineering investment.
Description
Technical Field
The utility model relates to the technical field of high-speed railways, in particular to a red layer mudstone screw pile composite roadbed for a ballastless track of a high-speed railway.
Background
The red mudstone is used as roadbed engineering filler for railways, highways and municipal roads, a large amount of abandoned parties can be reduced, the environment is protected, and the engineering investment is saved, but the red mudstone is easy to weather and crush, low in strength and easy to disintegrate and soften after meeting water, and the red mudstone is poor in water stability when being directly used as roadbed filler.
Disclosure of utility model
The utility model aims to provide a red layer mudstone screw pile composite roadbed for a ballastless track of a high-speed railway so as to solve the problems. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the application provides a red mud rock screw pile composite roadbed of a ballastless track of a high-speed railway, which comprises the following components:
A bed comprising a bed surface layer and a bed bottom layer, the bed surface layer disposed above the bed bottom layer;
the embankment is arranged below the foundation bed and is a red mud rock embankment;
the foundation is arranged below the embankment;
Reinforcing structure, reinforcing structure set up in inside the embankment, reinforcing structure includes screw pile crowd and rubble bed course, screw pile crowd includes a plurality of screw pile and pile cap, the screw pile vertical set up in the embankment, every the top of screw pile all is equipped with the pile cap, the rubble bed course set up in the screw pile crowd the top surface with between the top surface of embankment.
Further, a plurality of screw piles are arranged at intervals inside the embankment.
Further, the screw piles are arranged in a quincuncial shape inside the embankment.
Further, the distance between two adjacent screw piles is 1.8m.
Further, the bottom of the screw pile is abutted to the base of the embankment.
Further, the top of the screw pile is rigidly connected with the pile cap.
Further, the maximum grain diameter of the red layer mudstone filler in the embankment is not more than 60mm, the compaction degree K of the embankment is not less than 0.92, and the foundation coefficient K30 of the embankment is not less than 130MPa/m.
Further, the thickness of the crushed stone cushion layer is 0.5m.
Further, the compaction degree K of the broken stone cushion layer is more than or equal to 0.95, and the foundation coefficient K30 of the broken stone cushion layer is more than or equal to 150MPa/m.
Further, the pile cap is a round pile cap formed by reinforced concrete, the thickness of the pile cap is 40cm, the diameter of the pile cap is 1m, and the screw pile is connected with the pile cap after extending into the pile cap for 5 cm.
The beneficial effects of the utility model are as follows:
According to the utility model, the red mud rock embankment is reinforced through the screw pile groups and the broken stone cushion layers in the reinforcing structure, so that the settlement deformation of the red mud rock embankment is controlled on the basis of saving engineering investment, and the integrity and stability of the red mud rock screw pile composite roadbed of the ballastless track of the high-speed railway are improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a red layer mudstone screw pile composite roadbed of a ballastless track of a high-speed railway.
The marks in the figure: 1. a bed surface layer; 2. a base bed bottom layer; 3. a gravel cushion layer; 4. embankment; 5. a pile cap; 6. screw pile; 7. and (3) foundation.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
The embodiment provides a red layer mudstone screw pile composite roadbed of a ballastless track of a high-speed railway, which comprises the following components:
A bed comprising a bed surface layer 1 and a bed bottom layer 2, the bed surface layer 1 being arranged above the bed bottom layer 2;
The embankment 4 is arranged below the foundation bed, the embankment 4 is a red mud rock embankment, and the red mud rock embankment is an embankment formed by filling red mud rock;
a foundation 7, wherein the foundation 7 is arranged below the embankment 4;
Reinforcing structure, reinforcing structure set up in inside the embankment 4, reinforcing structure includes screw pile crowd and rubble bed course 3, screw pile crowd includes a plurality of screw pile 6 and pile cap 5, screw pile 6 vertical set up in the embankment 4, every the top of screw pile 6 all is equipped with pile cap 5, rubble bed course 3 set up in the screw pile crowd the top surface with between the top surface of embankment 4.
The screw piles 6 are distributed at intervals inside the embankment 4.
The screw piles 6 are arranged in a quincuncial shape inside the embankment 4.
The distance between two adjacent screw piles 6 is 1.8m.
The bottom of the screw pile 6 abuts against the base of the embankment 4.
The top of the screw pile 6 is rigidly connected to the pile cap 5.
The maximum grain diameter of red mudstone filler in the embankment 4 is not more than 60mm, the compaction degree K of the embankment 4 is more than or equal to 0.92, and the foundation coefficient K30 of the embankment 4 is more than or equal to 130MPa/m.
The thickness of the crushed stone cushion layer 3 is 0.5m.
The compaction degree K of the crushed stone cushion layer 3 is more than or equal to 0.95, and the foundation coefficient K30 of the crushed stone cushion layer 3 is more than or equal to 150MPa/m.
The pile cap 5 is a round pile cap formed by reinforced concrete, the thickness of the pile cap 5 is 40cm, the diameter of the pile cap is 1m, and the screw pile 6 extends into the pile cap 5 for 5cm and then is connected with the pile cap 5.
As shown in fig. 1, the red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway comprises a foundation 7, a embankment 4, a foundation bed bottom layer 2 and a foundation bed surface layer 1 which are sequentially arranged from bottom to top. Wherein the embankment 4 is a red mudstone embankment. The inside reinforced structure that is equipped with of embankment 4, reinforced structure includes screw pile crowd and rubble bed course 3, screw pile crowd includes a plurality of screw pile 6 and pile cap 5, screw pile 6 vertical set up in the embankment 4, every the top of screw pile 6 all is equipped with pile cap 5, rubble bed course 3 set up in the top surface of screw pile crowd with between the top surface of embankment 4. The screw piles 6 are distributed at intervals inside the embankment 4. The screw piles 6 are arranged in a quincuncial shape inside the embankment 4. The distance between two adjacent screw piles 6 is 1.8m. The bottom of the screw pile 6 abuts against the base of the embankment 4. The top of the screw pile 6 is rigidly connected to the pile cap 5.
Wherein, the maximum grain diameter of the red layer mudstone filling material in the embankment 4 is preferably not more than 60mm, the compaction degree K of the embankment 4 is more than or equal to 0.92, and the foundation coefficient K30 of the embankment 4 is more than or equal to 130MPa/m. The thickness of the crushed stone cushion layer 3 is 0.5m. The compaction degree K of the crushed stone cushion layer 3 is more than or equal to 0.95, and the foundation coefficient K30 of the crushed stone cushion layer 3 is more than or equal to 150MPa/m. The pile cap 5 is a round pile cap formed by reinforced concrete, the thickness of the pile cap 5 is 40cm, the diameter of the pile cap is 1m, and the screw pile 6 extends into the pile cap 5 for 5cm and then is connected with the pile cap 5. The gravel cushion 3 should be made of well graded and non-weathered gravel or crushed stone. The screw pile 6 starts to drill and squeeze into the red mudstone embankment from the bottom surface of the foundation bed until reaching the base of the embankment 4, and a layer of broken stone cushion layer 3 with the thickness of 50cm is paved on the pile cap 5.
The load of the embankment 4 and the load of the train are transmitted to the pile cap 5 through the broken stone cushion layer 3, and the pile cap 5 transfers the load to the deep part of the red mud rock embankment through the screw pile 6. Meanwhile, the screw pile 6 adopts a spiral drilling process in construction, plays a compaction role on the red mud rock embankment soil body, and effectively improves the compaction degree of the embankment soil body. In addition, as the screw pile 6 is provided with threads on the rod body, the contact and engagement between the screw pile 6 and the soil body are enhanced, the friction between the screw pile 6 and the soil body of the red mud rock embankment is increased, and the integrity of the composite roadbed formed by the screw pile and the soil body of the red mud rock embankment is improved.
The construction process of the utility model is as follows:
the first step: firstly, filling a embankment 4 to 50cm below the bottom surface of a foundation bed bottom layer 2 by adopting red mudstone according to design compaction requirements;
And a second step of: drilling a red mud rock embankment to the base of the embankment 4 according to a preset position by the prefabricated screw pile 6;
And a third step of: then embedding the top pile end of the screw pile 6 into 5cm and applying the pile end as a reinforced concrete pile cap, wherein the pile cap 5 is flush with the roadbed filling surface (50 cm below the bottom surface of the foundation bed);
Fourth step: and when the curing age of the pile cap 5 is enough, paving a gravel cushion layer 3 with the thickness of 50cm, and then filling a foundation bed structure.
The utility model can be widely applied to high-speed railway roadbed engineering in red mudstone areas in southwest mountain areas. The beneficial effects and advantages are mainly represented in three aspects: the roadbed structure can digest red mud rock in a large amount, reduce the secondary disasters of the waste slag field caused by instability of the side slope of the waste slag field due to long-term rainwater soaking, and has remarkable environmental protection benefit; the method can greatly reduce the amount of high-quality filling materials purchased and transported far away, save engineering investment and has obvious economic benefit; the part below the foundation bed of the filled roadbed, the screw pile, the pile cap and the broken stone cushion layer form a composite roadbed together, and the load of the upper foundation bed structure and the load of a train are borne together, so that the compression settlement of the embankment is effectively controlled.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a high-speed railway ballastless track red layer mudstone screw pile composite roadbed which characterized in that includes:
The bed comprises a bed surface layer (1) and a bed bottom layer (2), wherein the bed surface layer (1) is arranged above the bed bottom layer (2);
The embankment (4) is arranged below the foundation bed, and the embankment (4) is a red mud rock embankment;
a foundation (7), wherein the foundation (7) is arranged below the embankment (4);
reinforced structure, reinforced structure set up in inside embankment (4), reinforced structure includes screw pile crowd and rubble bed course (3), screw pile crowd includes a plurality of screw pile (6) and pile cap (5), screw pile (6) vertical set up in embankment (4), every screw pile (6) top all is equipped with pile cap (5), rubble bed course (3) set up in screw pile crowd's top surface with between the top surface of embankment (4).
2. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein a plurality of screw piles (6) are arranged at intervals inside the embankment (4).
3. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 2, wherein a plurality of screw piles (6) are arranged in a quincuncial shape inside the embankment (4).
4. A high-speed railway ballastless track red layer mudstone screw pile composite roadbed according to claim 3, characterized in that the distance between two adjacent screw piles (6) is 1.8m.
5. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the bottom of the screw pile (6) is propped against the base of the embankment (4).
6. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the top of the screw pile (6) is rigidly connected with the pile cap (5).
7. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the maximum grain diameter of red layer mudstone filler in the embankment (4) is not more than 60mm, the compaction degree K of the embankment (4) is more than or equal to 0.92, and the foundation coefficient K30 of the embankment (4) is more than or equal to 130MPa/m.
8. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the thickness of the broken stone cushion layer (3) is 0.5m.
9. The red layer mudstone screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the compaction degree K of the broken stone cushion layer (3) is more than or equal to 0.95, and the foundation coefficient K30 of the broken stone cushion layer (3) is more than or equal to 150MPa/m.
10. The red mud rock screw pile composite roadbed of the ballastless track of the high-speed railway according to claim 1, wherein the pile cap (5) is a round pile cap formed by reinforced concrete, the thickness of the pile cap (5) is 40cm, the diameter of the pile cap is 1m, and the screw pile (6) is connected with the pile cap (5) after extending into the pile cap (5) for 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467002.9U CN220952731U (en) | 2023-09-11 | 2023-09-11 | Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322467002.9U CN220952731U (en) | 2023-09-11 | 2023-09-11 | Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220952731U true CN220952731U (en) | 2024-05-14 |
Family
ID=90976253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322467002.9U Active CN220952731U (en) | 2023-09-11 | 2023-09-11 | Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220952731U (en) |
-
2023
- 2023-09-11 CN CN202322467002.9U patent/CN220952731U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lazorenko et al. | Dynamic behavior and stability of soil foundation in heavy haul railway tracks: A review | |
| CN101368383B (en) | Method for treating soft soil roadbed by artificial composite crust layer | |
| CN101979766B (en) | Subgrade bed structure of high-speed railway red clay cutting | |
| CN204849508U (en) | Roadbed structure of soft soil foundation highway road bridge changeover portion | |
| CN106676993B (en) | Reinforced broken stone frame structure roadbed reinforcing system and reinforcing method thereof | |
| CN104532712A (en) | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road | |
| CN203346730U (en) | Ballast track embankment bedding structure for municipal railways | |
| CN108842523A (en) | In-strong expansive rock or expansive soils ballastless track of high-speed railway foundation stabilization construction and construction method | |
| CN214992786U (en) | Municipal administration road design road surface domatic structure | |
| CN204879036U (en) | Resistance to compression protection road surface pipeline | |
| CN214271530U (en) | Soft basic district road structure based on building rubbish is laid | |
| CN107558324B (en) | A kind of Steel Fibre Concrete Pavement and its construction technology of tramcar and road usual friendship mouth | |
| CN212077510U (en) | High-speed railway light soil embankment U type groove supporting construction | |
| CN210529400U (en) | Solidified building residue soil road structure | |
| CN220952731U (en) | Red layer mudstone screw pile composite roadbed for ballastless track of high-speed railway | |
| CN201258447Y (en) | Asphalt concrete pavement water damage prevention composite structure for moist area | |
| CN204875404U (en) | Pre -buried formula pipeline intersecting structure in road surface | |
| CN204343123U (en) | A kind of structure of preventing and treating highway soft rock engineering sedimentation and deformation disease | |
| CN1421575A (en) | Light filled structure and its construction process | |
| CN215758302U (en) | High liquid limit soil roadbed structure | |
| CN202148477U (en) | Improved soil subgrade structure of high-speed railway in strong rainfall areas | |
| CN220952730U (en) | High-speed railway ballastless track red layer mudstone shallow-buried pile plate structure roadbed | |
| CN208219301U (en) | A kind of length mini pile construction weakening expansive soil foundation protuberance | |
| CN209260449U (en) | In-expansive rock or expansive soils non-fragment orbit foundation stabilization construct by force | |
| CN203320371U (en) | Ballastless track high-speed railway cutting foundation bed structure for a seasonally frozen ground area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |