CN114438839A - Construction method of half-fill and half-cut roadbed - Google Patents
Construction method of half-fill and half-cut roadbed Download PDFInfo
- Publication number
- CN114438839A CN114438839A CN202011198693.1A CN202011198693A CN114438839A CN 114438839 A CN114438839 A CN 114438839A CN 202011198693 A CN202011198693 A CN 202011198693A CN 114438839 A CN114438839 A CN 114438839A
- Authority
- CN
- China
- Prior art keywords
- roadbed
- filling
- side protection
- column
- protection column
- 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.)
- Granted
Links
Images
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
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a construction method of a half-filled and half-excavated roadbed, which comprises the steps that after a roadbed filling layer is excavated to the bottom elevation, excavation side protection columns are poured at intervals on the side of the roadbed close to a side slope, filling side protection columns are poured at intervals on the side of the roadbed far away from the side slope, a plurality of prestressed pull rods are connected between the excavation side protection columns and the filling side protection columns which are transversely opposite along the roadbed, concrete connecting walls are poured between the adjacent filling side protection columns, and all the filling side protection columns are connected into a whole; and then constructing a roadbed filling layer, tensioning and anchoring the pull rod, and finally constructing a roadbed surface layer. According to the invention, the protective columns are arranged on the roadbed filling side and the excavation side, and the pull rods are used for pulling oppositely, so that the effect of stabilizing the roadbed can be achieved; the connecting walls are arranged between the filling side columns, so that the construction amount of a roadbed filling layer can be reduced; after the pull rods are tensioned, the roadbed filling layer can quickly form a stable structure, so that the roadbed surface layer construction can be quickly carried out, and the construction progress is accelerated.
Description
Technical Field
The invention belongs to the technical field of road construction, relates to construction of a road subgrade in a mountainous area, and particularly relates to a construction method of a half-fill and half-cut subgrade.
Background
The highway in the mountain area is often built along a hillside, and the roadbed needs to be constructed in a half-filling and half-digging mode, namely, one side of the roadbed close to a slope body is dug, and one side of the roadbed far away from the slope body is filled. In order to prevent the phenomena of slope collapse, collapse and the like of the semi-filled and semi-excavated road section, retaining walls are usually built on the side, close to the slope, of the roadbed, but the commonly used retaining walls are deformed or displaced after the road runs for a period of time, so that the roadbed is unstable, and certain potential safety hazards are caused to the normal traffic of the road.
Disclosure of Invention
The invention aims to provide a construction method of a half-fill and half-cut roadbed capable of effectively fixing a roadbed side slope, so that the running safety of a road is ensured.
The technical scheme of the invention is as follows:
a construction method of a half-fill and half-cut roadbed is characterized by comprising the following steps:
(1) according to the two side lines of the roadbed, after the roadbed is excavated to the bottom elevation of a roadbed filling layer along the side slope, a digging side protective column is poured at a certain interval on the side of the roadbed close to the side slope, a filling side protective column is poured at a certain interval on the side of the roadbed far away from the side slope, and the intervals between the digging side protective column and the filling side protective column are equal; the lower end elevation of each protection column is positioned at a certain depth below the bottom elevation of the roadbed filling layer, wherein the upper end of the excavation side protection column is higher than the top elevation of the roadbed surface layer by a certain height, and the upper end of the filling side protection column is flush with the top elevation of the roadbed filling layer; each excavation side protection column and each filling side protection column are poured by adopting reinforced concrete, and a plurality of pull rod through holes are reserved between the bottom elevation and the top elevation of the roadbed filling layer along the transverse direction of the roadbed during pouring;
(2) a plurality of prestressed pull rods are connected between the excavation side protection column and the filling side protection column which are transversely opposite along the roadbed, and each prestressed pull rod is sleeved with a PVC pipe;
(3) pouring concrete connecting walls between adjacent filling side protection columns, and connecting all the filling side protection columns into a whole; the height of the connecting wall is flush with the top elevation of the roadbed filling layer;
(4) constructing a roadbed filling layer, after the roadbed filling layer is constructed, tensioning a pull rod on the outer side of the filling side protection column, and after tensioning is finished, respectively anchoring two ends of the pull rod with the excavation side protection column and the filling side protection column;
(5) and constructing a roadbed surface layer after the roadbed filling layer is stable.
The invention has the following advantages:
(1) protective columns are arranged on the roadbed filling side and the excavation side, and the protective columns are pulled oppositely through pull rods, so that the effect of stabilizing the roadbed and the side slope can be achieved;
(2) the connecting walls are arranged among the filling side columns, so that the stability of the filling side columns is enhanced, a vertical retaining wall is formed, and a roadbed is filled in the retaining wall, so that the construction amount of a roadbed filling layer can be reduced, and the construction cost of a project is reduced;
(3) after the pull rods are tensioned, the roadbed filling layer can quickly form a stable structure, so that the roadbed surface layer construction can be quickly carried out, and the construction progress is accelerated.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in the cross-direction of the roadbed;
FIG. 2 is a schematic view of the construction of the present invention on the fill side along the lengthwise direction of the roadbed;
fig. 3 is a schematic view of the construction of the present invention on the excavation side in the longitudinal direction of the roadbed.
Detailed Description
The specific construction method of the invention is as follows:
(1) as shown in fig. 1, 2 and 3, the roadbed is built along the longitudinal direction of the hillside 1, and needs to be excavated on the side close to the side slope and filled on the side far from the slope body. After two side lines of the roadbed are lofted, excavating to the bottom elevation of a roadbed filling layer 2 along a side slope, then pouring excavation side protection columns 3 at certain intervals on the side of the roadbed close to the side slope, and pouring filling side protection columns 4 at certain intervals on the side of the roadbed far away from the side slope, wherein the intervals between the excavation side protection columns 3 and the filling side protection columns 4 are equal; the lower end elevation of each protection column is positioned at a certain depth below the bottom elevation of the roadbed filling layer, wherein the upper end of the excavation side protection column 3 is higher than the designed elevation of the top of the roadbed surface layer 5 by a certain height, and the upper end of the filling side protection column 4 is flush with the top elevation of the roadbed filling layer 2; each excavation side protection column 3 and each filling side protection column 4 are poured by reinforced concrete, and a plurality of pull rod through holes are reserved between the bottom elevation and the top elevation of the roadbed filling layer along the transverse direction of the roadbed during pouring;
(2) a plurality of prestressed pull rods 6 are connected between the excavation side protection column 3 and the filling side protection column 4 which are transversely opposite along the roadbed, and each prestressed pull rod 6 is sleeved with a PVC pipe to prevent the pull rod from being rusted;
(3) concrete connecting walls 7 are poured between adjacent filling side protection columns, and all the filling side protection columns 4 are connected into a whole; the height of the connecting wall 7 is flush with the top elevation of the roadbed filling layer 2;
(4) constructing a roadbed filling layer 2, after filling, tensioning a pull rod 6 at the outer side of a filling side protection column, and after tensioning, respectively anchoring two ends of the pull rod with an excavation side protection column and a filling side protection column;
(5) and (5) constructing a roadbed surface layer 5 after the roadbed filling layer is compacted and stabilized.
Claims (1)
1. A construction method of a half-fill and half-cut roadbed is characterized by comprising the following steps:
(1) according to the two side lines of the roadbed, after the roadbed is excavated to the bottom elevation of a roadbed filling layer along the side slope, a digging side protective column is poured at a certain interval on the side of the roadbed close to the side slope, a filling side protective column is poured at a certain interval on the side of the roadbed far away from the side slope, and the intervals between the digging side protective column and the filling side protective column are equal; the lower end elevation of each protection column is positioned at a certain depth below the bottom elevation of the roadbed filling layer, wherein the upper end of the excavation side protection column is higher than the top elevation of the roadbed surface layer by a certain height, and the upper end of the filling side protection column is flush with the top elevation of the roadbed filling layer; each excavation side protection column and filling side protection column are poured by reinforced concrete, and a plurality of pull rod through holes are reserved between the bottom elevation and the top elevation of the roadbed filling layer along the transverse direction of the roadbed during pouring;
(2) a plurality of prestressed pull rods are connected between the excavation side protection column and the filling side protection column which are transversely opposite along the roadbed, and each prestressed pull rod is sleeved with a PVC pipe;
(3) pouring concrete connecting walls between adjacent fill side protective columns, and connecting all the fill side protective columns into a whole; the height of the connecting wall is flush with the top elevation of the roadbed filling layer;
(4) constructing a roadbed filling layer, after the roadbed filling layer is constructed, tensioning a pull rod on the outer side of the filling side protection column, and after tensioning is finished, respectively anchoring two ends of the pull rod with the excavation side protection column and the filling side protection column;
(5) and constructing a roadbed surface layer after the roadbed filling layer is stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198693.1A CN114438839B (en) | 2020-10-31 | 2020-10-31 | Construction method of half-filling and half-digging roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011198693.1A CN114438839B (en) | 2020-10-31 | 2020-10-31 | Construction method of half-filling and half-digging roadbed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114438839A true CN114438839A (en) | 2022-05-06 |
| CN114438839B CN114438839B (en) | 2023-05-16 |
Family
ID=81356942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011198693.1A Active CN114438839B (en) | 2020-10-31 | 2020-10-31 | Construction method of half-filling and half-digging roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114438839B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899839A (en) * | 2010-03-30 | 2010-12-01 | 山东大学 | Counter-pulled type rib retaining wall of pre-stressing force cantilever |
| CN103821071A (en) * | 2014-03-04 | 2014-05-28 | 西南交通大学 | Weak foundation soil high-fill embankment fabricated building method and device in peneplain regions |
| CN104264557A (en) * | 2014-08-28 | 2015-01-07 | 杭州江润科技有限公司 | Semi-filling and semi-excavating ecological subgrade structure and construction method |
| CN105780618A (en) * | 2016-03-24 | 2016-07-20 | 杭州江润科技有限公司 | Prefabricated slab oppositely-pulling vertical type non-slope embankment and construction method |
| CN106245481A (en) * | 2016-08-26 | 2016-12-21 | 中铁四局集团有限公司 | Construction method for maintaining integrity and stability of roadbed under complex geological condition |
| CN208748685U (en) * | 2018-09-05 | 2019-04-16 | 四川电力设计咨询有限责任公司 | High semi-filling and semi-excavating section integration pavement structure |
-
2020
- 2020-10-31 CN CN202011198693.1A patent/CN114438839B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899839A (en) * | 2010-03-30 | 2010-12-01 | 山东大学 | Counter-pulled type rib retaining wall of pre-stressing force cantilever |
| CN103821071A (en) * | 2014-03-04 | 2014-05-28 | 西南交通大学 | Weak foundation soil high-fill embankment fabricated building method and device in peneplain regions |
| CN104264557A (en) * | 2014-08-28 | 2015-01-07 | 杭州江润科技有限公司 | Semi-filling and semi-excavating ecological subgrade structure and construction method |
| CN105780618A (en) * | 2016-03-24 | 2016-07-20 | 杭州江润科技有限公司 | Prefabricated slab oppositely-pulling vertical type non-slope embankment and construction method |
| CN106245481A (en) * | 2016-08-26 | 2016-12-21 | 中铁四局集团有限公司 | Construction method for maintaining integrity and stability of roadbed under complex geological condition |
| CN208748685U (en) * | 2018-09-05 | 2019-04-16 | 四川电力设计咨询有限责任公司 | High semi-filling and semi-excavating section integration pavement structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114438839B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102352590A (en) | Method for splicing highfill roadbed by adopting pile-sheet retaining wall | |
| CN111364486B (en) | Remediation and reinforcement device and method for emergency rescue of slide-resistant pile side slope | |
| CN101838957B (en) | Integral type T-shaped outer cantilever roads and construction method thereof | |
| CN111304988B (en) | Light embankment structure built on steep hillside and construction method | |
| CN105926391A (en) | Method for widening shoulder of existing railway subgrade | |
| CN113047351A (en) | Existing retaining wall reinforcing structure and construction method thereof | |
| CN107630706A (en) | A kind of tunnel bottom structure and construction method for eliminating highland nip tunnel inverted arch protuberance | |
| CN210104765U (en) | High and large retaining structure of soft geological side slope | |
| CN114438839A (en) | Construction method of half-fill and half-cut roadbed | |
| KR100846094B1 (en) | Abutment structure and the construction method of this for mountains area installation with slope | |
| CN215290317U (en) | Existing retaining wall reinforced structure | |
| CN216920435U (en) | Underpass existing large-section shallow underground passage supporting structure of pipe gallery | |
| CN213952254U (en) | Semi-filling and semi-excavating roadbed slope protection structure | |
| CN211447011U (en) | Wall supporting structure based on waste guardrail stand columns | |
| CN211772498U (en) | Abrupt slope supports atress type roadbed structure | |
| CN213038395U (en) | Side slope retaining structure of high soil slope entrance to a cave | |
| CN209891217U (en) | Abrupt slope antiskid reinforced structure | |
| CN112962634A (en) | External retaining reinforcing structure for deformed highway on upper part of landslide body and construction method | |
| CN113152187A (en) | Semi-excavation and semi-filling stone roadbed structure and construction method | |
| CN111894017A (en) | Miniature pile group slope reinforcing structure | |
| CN111218873A (en) | Steep slope supporting stress type roadbed structure and construction method | |
| CN110777844A (en) | Wall supporting structure based on waste guardrail stand columns and construction method thereof | |
| CN215857760U (en) | Open cut tunnel extension foam concrete backfill structure | |
| CN115478565B (en) | Excavation construction process for fully weathered V-level rock shallow tunnel | |
| KR100441966B1 (en) | Applying Method of Casing as the Concrete Filled Tube |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |