CN111501458A - Paving method of stone-filled roadbed - Google Patents
Paving method of stone-filled roadbed Download PDFInfo
- Publication number
- CN111501458A CN111501458A CN202010338011.6A CN202010338011A CN111501458A CN 111501458 A CN111501458 A CN 111501458A CN 202010338011 A CN202010338011 A CN 202010338011A CN 111501458 A CN111501458 A CN 111501458A
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- Prior art keywords
- roadbed
- drainage
- pipe
- wall
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- 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
- E01C3/02—Concrete base for bituminous paving
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- 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
- 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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to the field of road pavement, and particularly provides a method for paving a stone-filled roadbed. Compared with the prior art, the method for paving the stone-filled roadbed comprises the following steps of a, constructing cross slopes on two sides along the midline of a roadbed, and constructing and pouring longitudinal drainage walls on two sides of the roadbed; b. embedding a flow guide pipe at the bottom of the longitudinal drainage wall, and arranging water permeable holes on the pipe wall of the flow guide pipe; c. a transverse drain pipe is longitudinally arranged along the flow guide pipe and extends out of the outer side of the longitudinal drain wall; d. and a drainage ditch is arranged below the transverse drainage pipe extending out of the outer side of the longitudinal drainage wall. The invention can reduce the damage of water to the roadbed, increase the bearing capacity of the roadbed structure, prolong the service life of the roadbed structure, effectively perform the combination of prevention and drainage of water in the roadbed and has good popularization value.
Description
Technical Field
The invention relates to the field of road pavement, and particularly provides a method for paving a stone-filled roadbed.
Background
The highway subgrade in China is usually composed of plain soil, lime soil or cement soil, the filling height is dozens of centimeters to several meters, a large amount of soil resources of available cultivated land are consumed, the protection of water and soil resources is not facilitated, the water erosion resistance of the soil subgrade is limited, the subgrade strength is low, the settlement deformation is large along with the time, and the uneven settlement is easy to occur under the influence of water.
However, in general, the roadbed is filled with stones in the mountain section, but because the filling is hard, the compacted density is high, and the water permeability is high, water can easily enter the roadbed from the road surface, the side slope and other parts, and the overall roadbed is unevenly settled.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a strong-practicability stone-filling roadbed paving method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for paving a stone-filled roadbed comprises the following steps,
a. constructing transverse slopes along the central line of the roadbed, and constructing and pouring longitudinal drainage walls on the two sides of the roadbed;
b. embedding a flow guide pipe at the bottom of the longitudinal drainage wall, and arranging water permeable holes on the pipe wall of the flow guide pipe;
c. a transverse drain pipe is longitudinally arranged along the flow guide pipe and extends out of the outer side of the longitudinal drain wall;
d. and a drainage ditch is arranged below the transverse drainage pipe extending out of the outer side of the longitudinal drainage wall.
Furthermore, a rapid trough is arranged on the side slope of the roadbed, a transverse drain pipe extending out of the outer side of the longitudinal drain wall penetrates through the rapid trough, and a drain ditch is arranged below the rapid trough.
Furthermore, multiple layers of roadbed are laid in sequence, and a waterproof layer is laid between every two layers of roadbed.
Preferably, the transverse gradient of each layer of the roadbed is 1% -3%, the paving thickness is not more than 500MM, the particle size of the broken stone is not more than 300MM, the broken stone with the particle size of more than 100MM faces downwards, the surface is leveled by stone chips, and the void ratio is 8% -20%.
Further, emulsified asphalt is sprayed on the top surface of the roadbed, and the dosage of the emulsified asphalt is 0.4kg/m2-2.0kg/m2The spreading amount is based on that the crushed stone particles in the surface 50mm are consolidated, the void ratio of the surface 50mm is less than 8 percent, and the emulsified asphalt runoff is not formed on the surface.
Furthermore, the construction width of the longitudinal drainage wall is 100-500mm, the construction height is not more than 500mm, the void ratio is 8-20%, a concrete structure is adopted for pouring, the strength of the concrete structure is C15-C30, and 10-30mm of broken stones are adopted for the concrete.
Furthermore, the inner side surface and the top surface of the longitudinal drainage wall are paved with anti-filtration geotextile, and the bottom surface and the outer side surface are paved with anti-seepage geotextile for wrapping.
Preferably, the diameter of the draft tube is 90-110mm, and the surface of the draft tube is wrapped with the anti-filtration geotextile.
Preferably, the surface of the draft tube is spirally provided with water permeable holes with the diameter of 5-10mm, and the thread pitch is 40-60 mm.
Preferably, one transverse drainage pipe is arranged at intervals of 20-50m along the longitudinal direction of the flow guide pipe, and the diameter of each transverse drainage pipe is 90-110 mm.
Compared with the prior art, the method for paving the stone-filled roadbed has the following outstanding beneficial effects:
(1) the method for paving the stone-filled roadbed divides the roadbed into a plurality of layers, each layer is filled by materials such as broken stones, concrete, asphalt and the like, the strength of the roadbed is enhanced, the water erosion resistance of the roadbed is correspondingly enhanced, and the uneven settlement of the roadbed can be effectively avoided. Install honeycomb duct and horizontal drain pipe in the road bed, assemble the water in vertical honeycomb duct in horizontal drain pipe, horizontal drain pipe is with row to the rapid trough, and the rapid trough is with row to the escape canal, reduces the destruction of water to the road bed, increases the roadbed structure bearing capacity, extension roadbed structure life can effectually prevent discharging the combination to the inside moisture of road bed.
(2) The inner side surface and the top surface of the longitudinal drainage wall are wrapped by the anti-filtration geotextile, and the outer side surface and the bottom surface of the longitudinal drainage wall are wrapped by the anti-seepage geotextile, so that water in the roadbed is converged into the longitudinal drainage wall of the roadbed, rainwater can be prevented from permeating into the roadbed, the longitudinal drainage wall can also be used as an auxiliary channel of the flow guide pipe and the transverse drainage pipe, and the drainage effect of the roadbed is enhanced.
(3) The invention adopts the mode of arranging the transverse drainage pipe to communicate the longitudinal drainage pipe and the slope torrent tank, constructs a complete and comprehensive drainage system, can timely drain a large amount of water accumulated in the roadbed structure to the outside of the roadbed structure, and avoids the problems of roadbed water damage, roadbed bearing capacity reduction and the like caused by long-time water erosion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a method for paving a stone-filled roadbed.
The reference symbols in the drawings respectively indicate:
1. roadbed, 2, vertical drainage wall, 3, honeycomb duct, 4, horizontal drainage pipe, 5, rapid trough, 6, escape canal.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to better understand the technical solutions of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
A preferred embodiment is given below:
as shown in fig. 1, the method for paving a stone-filled roadbed in the present embodiment is composed of a bottom roadbed 1, a middle roadbed 1 and a top roadbed 1, and the respective paving methods are as follows:
(1) subgrade with bottom layer
The method comprises the following steps of paving a bottom roadbed 1 on a foundation, wherein the paving thickness of the bottom roadbed 1 is 500mm, the particle size of broken stones is not more than 300mm, the broken stones with the particle size larger than 100mm need to face downwards greatly, stone chips are used for filling gaps among stone materials with the particle size, and the detection of the void ratio among the aggregates of the roadbed 1 is 10% -15% after filling and rolling is completed.
And (2) constructing and pouring longitudinal drainage walls 2 on two sides of the bottom roadbed 1, wherein the longitudinal drainage walls 2 are cast in situ by adopting template support, the concrete strength is C15, the crushed stone with single particle size of 20-30mm is adopted, and the void ratio is 8-20%. The height of the longitudinal drainage wall 2 is the same as the thickness of the roadbed 1 at the bottom layer, the height is 500mm, and the width is 300 mm. The inner side surface and the top surface of the longitudinal drainage wall 2 are wrapped by the anti-filtration geotextile, and the parts of the outer side surface, the bottom surface and the top surface, which are wider than the middle-layer roadbed longitudinal drainage wall 2, are wrapped by the anti-seepage geotextile, so that the water in the bottom roadbed 1 can be better converged into the longitudinal drainage wall 2 by the construction method.
A draft tube 3 with the diameter of 100mm is buried in the center of the bottom of a longitudinal drainage wall 2, the surface of the draft tube is wrapped with a reverse filter geotextile, and the wall of the draft tube 3 is spirally provided with a water permeable hole with the diameter of 10mm, and the thread pitch is 50 mm.
The transverse drainage pipes 4 with the diameter of 100mm are connected at intervals of 50m along the longitudinal direction of the draft tube 3, the transverse drainage pipes 4 extend out of the longitudinal drainage wall 2, the transverse drainage pipes 4 extending out of the longitudinal drainage wall 2 penetrate through a rapid trough 5 arranged on a side slope, and a drainage ditch 6 is arranged below the rapid trough 5.
(2) Middle-layer roadbed
After the bottom roadbed 1 is compacted, a waterproof layer is paved on the top surface of the bottom roadbed, and the middle roadbed 1 is paved on the upper part of the waterproof layer. The middle roadbed 1 is paved in the same way as the bottom roadbed 1, and comprises longitudinal drainage walls 2, a drainage pipe 3 and a transverse drainage pipe 4, and the installation positions of the longitudinal drainage walls, the drainage pipe 3 and the transverse drainage pipe are also the same. The horizontal drainage pipes 4 extending outside the longitudinal drainage walls 2 pass through the rapid trough 5 provided on the side slope, and discharge the water into the rapid trough 5 and then to the drainage ditch 6.
(3) Top roadbed
And after the middle layer roadbed 1 is compacted, a waterproof layer is paved on the top surface of the middle layer roadbed 1, and a top layer roadbed 1 is paved on the upper part of the waterproof layer. The method for paving the top layer roadbed 1 is the same as that for paving the bottom layer roadbed 1, and the top layer roadbed 1 also comprises longitudinal drainage walls 2, a flow guide pipe 3 and a transverse drainage pipe 4, and the installation positions of the longitudinal drainage walls, the flow guide pipe 3 and the transverse drainage pipe are also the same. The lateral drainage pipes 4 extending outside the longitudinal drainage walls 2 pass through the rapid trough 5 provided on the side slope, and discharge the water into the rapid trough 5 and then to the drainage ditch 6.
Emulsified asphalt is sprayed on the top surface of the top roadbed 1, and the dosage of the emulsified asphalt is 1.0kg/m2The spreading amount is based on that the crushed stone particles in the surface 50mm are consolidated, the void ratio of the surface 50mm is 7 percent, and the emulsified asphalt runoff is not formed on the surface.
The bottom roadbed 1, the middle roadbed 1 and the top roadbed 1 are all characterized in that the central line ensures 2% of transverse gradient towards two sides.
The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the above embodiments, and any suitable changes or substitutions that are consistent with the claims of the method for paving a stone-filled roadbed according to the present invention and are made by those skilled in the art should fall within the protection scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for paving a stone-filled roadbed is characterized by comprising the following steps,
a. constructing transverse slopes along the central line of the roadbed, and constructing and pouring longitudinal drainage walls on the two sides of the roadbed;
b. embedding a flow guide pipe at the bottom of the longitudinal drainage wall, and arranging water permeable holes on the pipe wall of the flow guide pipe;
c. a transverse drain pipe is longitudinally arranged along the flow guide pipe and extends out of the outer side of the longitudinal drain wall;
d. and a drainage ditch is arranged below the transverse drainage pipe extending out of the outer side of the longitudinal drainage wall.
2. The method of laying a rockfill subgrade according to claim 1, wherein a chute is formed in the side slope of the subgrade, a lateral drainage pipe extending outside the longitudinal drainage wall passes through the chute, and a drainage ditch is formed below the chute.
3. The method as claimed in claim 2, wherein a plurality of layers of roadbed are laid in sequence, and a waterproof layer is laid between each layer of roadbed.
4. The method as claimed in claim 3, wherein the subgrade has a transverse gradient of 1-3%, a paving thickness of 500mm or less, a crushed stone size of 300mm or less, a crushed stone size of 100mm or more facing downward, and a surface leveled with stone chips, and has a void ratio of 8-20%.
5. The method of claim 4, wherein the emulsified asphalt is sprayed on the top surface of the roadbed in an amount of 0.4kg/m2-2.0kg/m2The spreading amount is based on that the crushed stone particles in the surface 50mm are consolidated, the void ratio of the surface 50mm is less than 8 percent, and the emulsified asphalt runoff is not formed on the surface.
6. The method as claimed in claim 4, wherein the construction width of the longitudinal drainage wall is 100-500mm, the construction height is not more than 500mm, the void ratio is 8-20%, and the method adopts concrete structure with strength of C15-C30 and 10-30mm of broken stones.
7. The method for paving a stone-filled roadbed according to claim 6, wherein the inner side surface and the top surface of the longitudinal drainage wall are paved with anti-filtration geotextile, and the bottom surface and the outer side surface are paved with seepage-proofing geotextile for wrapping.
8. The method for paving the stone-filled roadbed according to claim 1, wherein the diameter of the flow guide pipe is 90-110mm, and the surface of the flow guide pipe is wrapped with anti-filtration geotextile.
9. The method as claimed in claim 1, wherein the surface of the draft tube is spirally perforated with water-permeable holes having a diameter of 5-10mm and a pitch of 40-60 mm.
10. The method as claimed in claim 1, wherein a transverse drainage pipe is installed at every 20-50m in the longitudinal direction of the draft tube, and the diameter of the transverse drainage pipe is 90-110 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338011.6A CN111501458A (en) | 2020-04-26 | 2020-04-26 | Paving method of stone-filled roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010338011.6A CN111501458A (en) | 2020-04-26 | 2020-04-26 | Paving method of stone-filled roadbed |
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| Publication Number | Publication Date |
|---|---|
| CN111501458A true CN111501458A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010338011.6A Pending CN111501458A (en) | 2020-04-26 | 2020-04-26 | Paving method of stone-filled roadbed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022261587A1 (en) * | 2021-06-09 | 2022-12-15 | Cencer Daniel | Method to enhance solids and liquids flow through a stormwater containment volume |
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| CN110056000A (en) * | 2019-05-24 | 2019-07-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method and structure of balance weight type retaining wall |
| CN209585066U (en) * | 2018-12-19 | 2019-11-05 | 大连地拓环境科技有限公司 | A kind of Mine production slope drainage system |
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2020
- 2020-04-26 CN CN202010338011.6A patent/CN111501458A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6907838B2 (en) * | 2002-03-27 | 2005-06-21 | Patrick Henry Gorman | Floating structures |
| CN102296580A (en) * | 2011-04-21 | 2011-12-28 | 长沙理工大学 | Slope shallow drainage system |
| US8696235B2 (en) * | 2011-10-11 | 2014-04-15 | Techo-Bloc Inc. | Precast interconnectable concrete paver block for constructing paving surfaces |
| CN203755340U (en) * | 2014-03-24 | 2014-08-06 | 黄河勘测规划设计有限公司 | Retaining wall structure of pervious concrete through cut |
| CN203834315U (en) * | 2014-04-29 | 2014-09-17 | 长安大学 | Road drainage facility |
| CN104594329A (en) * | 2014-12-17 | 2015-05-06 | 河海大学 | Device for treating differential settlement of road and bridge transition sections through load reducing and method of device |
| CN105002927A (en) * | 2015-06-15 | 2015-10-28 | 湖北工业大学 | Construction method for excavation slope retaining wall reversed filter layer |
| CN106801414A (en) * | 2017-03-20 | 2017-06-06 | 武汉大学 | Dyke and dyke construction method of a kind of band from discharge structure |
| CN109056786A (en) * | 2018-08-15 | 2018-12-21 | 中冶南方工程技术有限公司 | Face upward inclined road shoulder wall water drainage behind the wall system and construction method |
| CN209585066U (en) * | 2018-12-19 | 2019-11-05 | 大连地拓环境科技有限公司 | A kind of Mine production slope drainage system |
| CN110056000A (en) * | 2019-05-24 | 2019-07-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method and structure of balance weight type retaining wall |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022261587A1 (en) * | 2021-06-09 | 2022-12-15 | Cencer Daniel | Method to enhance solids and liquids flow through a stormwater containment volume |
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Application publication date: 20200807 |