CN108049274A - Widening subgrade splicing construction - Google Patents
Widening subgrade splicing construction Download PDFInfo
- Publication number
- CN108049274A CN108049274A CN201810073343.9A CN201810073343A CN108049274A CN 108049274 A CN108049274 A CN 108049274A CN 201810073343 A CN201810073343 A CN 201810073343A CN 108049274 A CN108049274 A CN 108049274A
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- CN
- China
- Prior art keywords
- widening subgrade
- base
- subgrade
- widening
- splicing construction
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of widening subgrade splicing constructions, belong to road construction technical field, for widening subgrade to be spliced to former roadbed, set in the both sides of former roadbed and be equipped with the gradient towards inclined widening subgrade on the inside of highway, former roadbed and widening subgrade entirety cross section are trapezoidal；The side slope being connected with widening subgrade of former roadbed is arranged to stepped and is provided with the gradient on the inside of highway；Widening subgrade includes surface layer, base's group and bed course successively from top to bottom, base's group includes at least about two layers base being arranged in parallel, pull rod is equipped in every layer of base, from the middle part of base's group to being equipped with the anchor pole that tilts and go deep into inside the former roadbed between the bed course bottom.The present invention can solve easy generation Slope Sliding in the prior art, road surface hovering and unsafe technical problem, can reach that side slope protection is strong, improve the technique effect of the globality of splicing widening subgrade.
Description
Technical field
The invention belongs to road construction technical fields, are to be related to a kind of widening subgrade splicing construction more specifically.
Background technology
With economic development, traffic transport industry is also rapidly developed, important set of the highway transportation as communications and transportation
It is more and more stringenter to the construction requirements of highway transportation into part.In present engineering Reformed and expanded plan design, roadbed is inevitably run into
Widen, carried out step excavation, direct splicing, but the road structure so spliced for the splicing of roadbed is simply simple in the past
In the presence of very serious security risk, especially on soft soil foundation, the globality that can not ensure roadbed is so done, it is easy to generate
Slope Sliding generates road surface hovering, serious threat traffic safety.How to ensure the globality of seam-line removal, ensure traffic safety
Degree, so as to improve the bearing capacity of highway subgrade and performance, the service life for extending highway is road work for a long time
Person's problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of widening subgrade splicing construction, to solve easy production in the prior art
Raw Slope Sliding, road surface hovering and unsafe technical problem, can reach that side slope protection is strong, improve splicing widening subgrade
Globality ensures traffic safety degree, so as to improve the bearing capacity of highway subgrade and performance, extends the service life of highway
Technique effect.
To achieve the above object, the technical solution adopted by the present invention is：A kind of widening subgrade splicing construction is provided, in Yuan Lu
The both sides of base, which are set, is equipped with the gradient towards inclined widening subgrade on the inside of highway, and the original roadbed is whole horizontal with the widening subgrade
Section is trapezoidal；
The side slope being connected with the widening subgrade of the original roadbed is arranged to stepped and is provided on the inside of highway
The gradient；
The widening subgrade includes surface layer, base's group and bed course successively from top to bottom, and base's group includes at least two layers
The base being arranged in parallel up and down is equipped with pull rod in every layer of base, is set from the middle part of base's group between the bed course bottom
There is the anchor pole for tilting and going deep into inside the former roadbed.
Further, the side slope prepared by concrete is set in the outside portion of the surface layer, base's group and bed course.
Further, the both ends of the pull rod are equipped with hangnail, and the centre of the pull rod is connected using steel strand wires.
Further, the stepped side slope of the former roadbed and the faying surface of the widening subgrade are equipped with TGXG.
Further, the anchor pole is prepared using I or II grade of reinforcing bar.
Further, the outside of the reinforcing bar is equipped with the cement mortar wrapping layer of thickness >=8mm.
Further, the half of distance≤rock-bolt length between the anchor pole, and≤1.5m.
Further, the gradient of the side slope being connected with the widening subgrade of the former roadbed is 2%.
Further, the arrangement of the anchor pole is in plum blossom-shaped.
The advantageous effect of widening subgrade splicing construction provided by the invention is：With widening subgrade structure of the prior art
Globality poor is also easy to produce the sliding situation hanging with road surface and compares, and the present invention is set in the both sides of former roadbed towards on the inside of highway
The widening subgrade of the gradient, the side slope of former roadbed are arranged to stepped and are provided with the gradient on the inside of highway；Widening subgrade includes
Surface layer, base and bed course set pull rod in every layer of base, are equipped with from the middle part of base's group between the bed course bottom
It tilts and gos deep into the anchor pole inside the former roadbed.This structure side slope protective is strong, improves the globality of splicing widening subgrade, protects
Traffic safety degree is demonstrate,proved, so as to improve the bearing capacity of highway subgrade and performance, extends the service life of highway.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structure diagram of widening subgrade splicing construction provided in an embodiment of the present invention；
Fig. 2 is the layout drawing of anchor pole provided in an embodiment of the present invention.
Wherein, each reference numeral in figure：
1-surface layer, 2-base, 3-bed course, 4-pull rod, 5-TGXG, 6-anchor pole, 7-side slope, 8-original road
Base.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System is for only for ease of the description present invention and simplifies description rather than instruction or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the present invention, " multiple ", " several " be meant that two or
Two or more, unless otherwise specifically defined.
It refer to shown in Fig. 1, the present invention is used to widening subgrade being spliced to former roadbed 8, is set in the both sides of former roadbed 8
The gradient is towards (roadbed center position) inclined widening subgrade on the inside of highway, i.e. the inclined direction on the top of widening subgrade is towards road
Base center position, the original roadbed 8 and the widening subgrade entirety cross section are trapezoidal；The original roadbed 8 is widened with described
The side slope of roadbed connection is arranged to stepped and is provided with the gradient on the inside of highway, and above-mentioned value of slope is 2%；It is described to widen road
Base includes surface layer 1, base's group and bed course 3 successively from top to bottom, and base's group includes at least about two layers base being arranged in parallel
Layer 2 is equipped with pull rod 4 in every layer of base 2, is tilted and deeply from the middle part of base's group to being equipped between 3 bottom of bed course
Anchor pole 6 inside the original roadbed 8.
The Slope Design of former roadbed is with a slope stepped and widened with both sides by above-mentioned widening subgrade splicing construction
Roadbed connects, and widening subgrade includes surface layer 1, base's group and bed course 3 successively from top to bottom, and base's group is included at least two layers
Under the base 2 that is arranged in parallel, be equipped with pull rod 4 in every layer of base 2, pull rod 4 can enhance former roadbed 8 and the widening subgrade of both sides
Bonding strength, and add anchor pole 6, anchor pole 6 tilt and deep from the middle part of base's group to being equipped between 3 bottom of bed course
Enter inside the former roadbed 8, on the one hand above-mentioned anchor pole with reinforcing side slope, on the other hand can ensure the entirety of pavement structure
Property improves the bearing capacity of roadbed.
Side slope protection of the present invention is strong, improves the globality of splicing widening subgrade, ensures traffic safety degree, so as to improve public affairs
The bearing capacity and performance of road roadbed extend the service life of highway.
Further, refer to shown in Fig. 1, a kind of specific implementation as widening subgrade splicing construction provided by the invention
Mode sets the side slope 7 prepared by concrete in the outside portion of the surface layer 1, base's group and bed course 3.Above-mentioned concrete system
Standby side slope 7 can be further ensured that the overall stability of widening subgrade.
Further, refer to shown in Fig. 1, a kind of specific implementation as widening subgrade splicing construction provided by the invention
Mode, the both ends of the pull rod 4 are equipped with hangnail, and the centre of the pull rod 4 is connected using steel strand wires.Falling on above-mentioned pull rod 4
Thorn structure can enhance bonding strength, prevent landslide phenomenon and occur, and can enhance widening subgrade by steel strand wires connection
Overall stability.
Further, refer to shown in Fig. 1, a kind of specific implementation as widening subgrade splicing construction provided by the invention
Mode, the stepped side slope and the faying surface of the widening subgrade of the original roadbed 8 are equipped with TGXG 5.Above-mentioned geotechnique's lattice
Grid 5 can effectively enhance the globality of splicing widening subgrade, ensure traffic safety.
Further, a kind of specific embodiment as widening subgrade splicing construction provided by the invention, the anchor pole 6
It is prepared using I or II grade of reinforcing bar；The outside of the reinforcing bar is equipped with the cement mortar wrapping layer of thickness >=8mm；Cement mortar it is strong
Degree grade does not answer low M20.The design of above-mentioned anchor pole 6, tensile capacity is stronger, can ensure the globality of pavement structure, improves road
The bearing capacity of base.
Further, refer to shown in Fig. 2, a kind of specific implementation as widening subgrade splicing construction provided by the invention
Mode, the anchor pole 6 arrangement is in plum blossom-shaped, the half of distance≤rock-bolt length between anchor pole 6, and≤1.5m, above-mentioned cloth
Meter is installed, tensile capacity is stronger, can ensure the globality of pavement structure, improves the bearing capacity of roadbed.
Specific case used herein is set forth the principle of the present invention and embodiment, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention.It should be pointed out that the ordinary skill for the art
For personnel, without departing from the principle of the present invention, can also to the present invention some improvement and modification can also be carried out, these improvement
It is also fallen into modification in the protection domain of the claims in the present invention.
Claims (9)
1. widening subgrade splicing construction, for widening subgrade to be spliced to former roadbed (8), it is characterised in that：In former roadbed (8)
Both sides set and be equipped with the gradient towards inclined widening subgrade on the inside of highway, the original roadbed (8) and the widening subgrade are whole
Cross section is trapezoidal；
The side slope being connected with the widening subgrade of the original roadbed (8) is arranged to stepped and is provided with the slope on the inside of highway
Degree；
The widening subgrade includes surface layer (1), base's group and bed course (3) successively from top to bottom, and base's group includes at least two
The base (2) that layer is arranged in parallel up and down, every layer of base (2) is interior to be equipped with pull rod (4), from the middle part of base's group to the bed course
(3) it is equipped between bottom and tilts and go deep into the internal anchor pole (6) of the former roadbed (8).
2. widening subgrade splicing construction according to claim 1, it is characterised in that：In the surface layer (1), base's group and pad
The outside portion of layer (3) sets the side slope (7) prepared by concrete.
3. widening subgrade splicing construction according to claim 1, it is characterised in that：The both ends of the pull rod (4) are equipped with
Thorn, and the centre of the pull rod (4) is connected using steel strand wires.
4. widening subgrade splicing construction according to claim 1, it is characterised in that：The stepped side of the original roadbed (8)
Slope and the faying surface of the widening subgrade are equipped with TGXG (5).
5. widening subgrade splicing construction according to claim 1, it is characterised in that：The anchor pole (6) uses I or II grade of steel
It is prepared by muscle.
6. widening subgrade splicing construction according to claim 5, it is characterised in that：The outside of the reinforcing bar be equipped with thickness >=
The cement mortar wrapping layer of 8mm.
7. widening subgrade splicing construction according to claim 1, it is characterised in that：Distance≤anchor between the anchor pole (6)
The half of pole length, and≤1.5m.
8. widening subgrade splicing construction according to claim 1, it is characterised in that：Original roadbed (8) is opened up with described
The gradient of the side slope of broad way base connection is 2%.
9. widening subgrade splicing construction according to claim 1, it is characterised in that：The arrangement of the anchor pole (6) is in plum blossom
Shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073343.9A CN108049274A (en) | 2018-01-25 | 2018-01-25 | Widening subgrade splicing construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073343.9A CN108049274A (en) | 2018-01-25 | 2018-01-25 | Widening subgrade splicing construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108049274A true CN108049274A (en) | 2018-05-18 |
Family
ID=62124834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073343.9A Withdrawn CN108049274A (en) | 2018-01-25 | 2018-01-25 | Widening subgrade splicing construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108049274A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755320A (en) * | 2018-08-27 | 2018-11-06 | 山东大学 | A kind of reinforcement Foam lightweight soil Widening Embankment structure and its construction method |
| CN110144767A (en) * | 2019-04-03 | 2019-08-20 | 中铁第四勘察设计院集团有限公司 | Help broad way based structures and construction method |
| CN111005278A (en) * | 2019-12-23 | 2020-04-14 | 重庆交通大学 | Local reinforced embankment, construction method and rapid repairing and reinforcing method thereof |
| CN112921727A (en) * | 2021-01-28 | 2021-06-08 | 攀钢集团工程技术有限公司 | High and steep slope road widening construction method |
-
2018
- 2018-01-25 CN CN201810073343.9A patent/CN108049274A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108755320A (en) * | 2018-08-27 | 2018-11-06 | 山东大学 | A kind of reinforcement Foam lightweight soil Widening Embankment structure and its construction method |
| CN110144767A (en) * | 2019-04-03 | 2019-08-20 | 中铁第四勘察设计院集团有限公司 | Help broad way based structures and construction method |
| CN110144767B (en) * | 2019-04-03 | 2024-06-07 | 中铁第四勘察设计院集团有限公司 | Side-width roadbed structure and construction method |
| CN111005278A (en) * | 2019-12-23 | 2020-04-14 | 重庆交通大学 | Local reinforced embankment, construction method and rapid repairing and reinforcing method thereof |
| CN112921727A (en) * | 2021-01-28 | 2021-06-08 | 攀钢集团工程技术有限公司 | High and steep slope road widening construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180518 |
|
| WW01 | Invention patent application withdrawn after publication |