CN109098059A - A kind of roadbed construction method and a kind of road structure - Google Patents
A kind of roadbed construction method and a kind of road structure Download PDFInfo
- Publication number
- CN109098059A CN109098059A CN201811101261.7A CN201811101261A CN109098059A CN 109098059 A CN109098059 A CN 109098059A CN 201811101261 A CN201811101261 A CN 201811101261A CN 109098059 A CN109098059 A CN 109098059A
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- Prior art keywords
- roadbed
- sand
- laid
- iron tailings
- layer
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Classifications
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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
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F11/00—Road engineering aspects of Embedding pads or other sensitive devices in paving or other road surfaces, e.g. traffic detectors, vehicle-operated pressure-sensitive actuators, devices for monitoring atmospheric or road conditions
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of roadbed construction methods, by successively being laid with skin rock layers, iron tailings layer of sand and skin rock layers of going up a hill formation roadbed matrix from the bottom to top in roadbed slot, and clay bound edge protective layer is equipped in roadbed matrix two sides, iron tailings layer of sand is compacted in such a way that static pressure and dither interval use, site operation is convenient and consolidation effect is good, it can be improved road structure stability, clay bound edge protective layer and the mountain skin stone material being laid on iron tailings sand can effectively prevent iron tailings sand road base to be acted on and destroyed by rainwash.The invention also discloses a kind of road structures.
Description
Technical field
The present invention relates to Roadbed Construction Technology fields, more particularly to a kind of roadbed construction method.In addition, the present invention also relates to
And a kind of road structure.
Background technique
Iron tailings sand is the waste that iron ore factory abandons, and is currently placed in dam, mountain area or farmland usually as industrial waste
Deng land resource, polluted river soil etc. can be occupied.To realize waste and scrap recycling, economic use value is improved, and reduce ring
Border pollution, can use using iron tailings sand as roadbed material.
For iron tailings sand as roadbed material in use, since its grain composition is uniform, plasticity is strong, if moisture content regulation is not
When common compacting mode is difficult to be compacted into again, influences subgrade stability, and if without corresponding safeguard measure, roadbed
When being acted on by rain drop erosion, structure is easily destroyed.
Existing construction method is mostly that clay is directly added into iron tailings sand, is stirred at the construction field (site) using machinery
Making roadbed later, or iron tailings sand road base is tamped using from the heavy-tamping method rammed to full rammer, to solve iron tailings sand
As the construction difficult problem of roadbed material, but there is long construction period or more harsh to execution conditions requirement in above-mentioned construction method again
The problem of, it is poor for applicability.
Therefore how to solve iron tailings sand and use as roadbed material to lead to that subgrade stability is poor, is inconvenient to construct etc. and ask
Topic, is a technical problem that technical personnel in the field need to solve at present.
Summary of the invention
The object of the present invention is to provide a kind of roadbed construction methods, are able to solve iron tailings sand and use as roadbed material
Caused subgrade stability is poor, is inconvenient to the problems such as constructing.Above-mentioned construction party is used it is a further object of the present invention to provide a kind of
The road structure of method.
In order to solve the above technical problems, the present invention provides a kind of roadbed construction method, including,
It is laid with skin rock layers in roadbed slot;
It is described go down the hill skin rock layers on be laid with iron tailings layer of sand;
The iron tailings layer of sand is compacted in such a way that static pressure and dither interval use;
It is laid with skin rock layers of going up a hill on the iron tailings layer of sand, forms roadbed matrix;
Bound edge protection is carried out to roadbed matrix two sides using clay.
Preferably, it is described it is described go down the hill skin rock layers on be laid with iron tailings layer of sand;Made by static pressure and dither interval
Mode is compacted the iron tailings layer of sand,
It is described go down the hill skin rock layers on be laid with the first iron tailings layer of sand, used by static pressure mode and dither interval
Mode is compacted the first iron tailings layer of sand;
It is laid with the second iron tailings layer of sand on the first iron tailings layer of sand, is made by static pressure mode and dither interval
Mode is compacted the second iron tailings layer of sand.
Preferably, further include,
In roadbed paving to embankment thereon and lower embankment line of demarcation, it is laid with along width of subgrade direction for measuring roadbed cross
The lateral optical cable of Section Settlement deformation, is laid with longitudinal light for measuring roadbed vertical section sedimentation and deformation along roadbed length direction
Cable.
Preferably, the lateral optical cable is equipped in roadbed head and the tail both ends and middle position;In the longitudinal center of roadbed
Longitudinal optical cable is equipped at left and right sides of line and at the position of longitudinal centre line 1m and 2.5m described in this.
Preferably, further include,
In roadbed paving to embankment thereon and lower embankment line of demarcation, it is laid with the first layer optical fiber for monitoring roadbed temperature
Sensor;
In roadbed paving to its embankment and roadbed line of demarcation, it is laid with the second layer Fibre Optical Sensor for monitoring roadbed temperature
Device.
The present invention also provides a kind of road structures, including are successively laid with from the bottom to top in roadbed slot and form roadbed matrix
Skin rock layers of going down the hill, iron tailings layer of sand and skin rock layers of going up a hill, the iron tailings layer of sand used by static pressure and dither interval
Mode be compacted, roadbed matrix two sides be equipped with clay bound edge protective layer.
Preferably, it is equipped in the roadbed matrix and is laid with along width of subgrade direction and becomes for measuring subgrade cross section sedimentation
The lateral optical cable of shape, and longitudinal optical cable along the laying of roadbed length direction and for measuring roadbed vertical section sedimentation and deformation.
Preferably, the multilayer fibers sensing for monitoring roadbed temperature is successively arranged in the roadbed matrix from bottom to up
Device.
Roadbed construction method provided by the invention and road structure, by successively being laid with from the bottom to top in roadbed slot
Skin rock layers, iron tailings layer of sand and skin rock layers of going up a hill form roadbed matrix, and are equipped with clay bound edge protective layer in roadbed matrix two sides,
Iron tailings layer of sand is compacted in such a way that static pressure and dither interval use, and site operation is convenient and consolidation effect is good, can
Road structure stability, clay bound edge protective layer and the mountain skin stone material being laid on iron tailings sand are improved, can be effectively prevent
Iron tailings sand road base is acted on by rainwash and is destroyed.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of roadbed construction method provided by the present invention;
Fig. 2 is the lateral optical cable and longitudinal direction optical cable laying of a kind of specific embodiment of road structure provided by the present invention
Schematic diagram.
It is marked in attached drawing as follows:
Roadbed matrix 1, lateral optical cable 2, longitudinal optical cable 3.
Specific embodiment
Core of the invention is to provide a kind of roadbed construction method, is able to solve iron tailings sand and uses as roadbed material
Caused subgrade stability is poor, is inconvenient to the problems such as constructing.Another core of the invention is to provide a kind of using above-mentioned construction party
The road structure of method.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is a kind of knot of specific embodiment of roadbed construction method provided by the present invention
Structure schematic diagram, Fig. 2 are that a kind of lateral optical cable of specific embodiment of road structure provided by the present invention and longitudinal optical cable are spread
If schematic diagram.
The roadbed construction method that the specific embodiment of the invention provides, including,
S1: it is laid with skin rock layers in roadbed slot;
When specific subgrade construction, is first crossed according to design drawing and excavate to form roadbed slot, then spread in roadbed slot
If it is certain thickness go down the hill Pi Shi.
S2: iron tailings layer of sand is laid in skin rock layers going down the hill;
S3: iron tailings layer of sand is compacted in such a way that static pressure and dither interval use;
It is compacted iron tailings layer of sand in such a way that static pressure and dither interval use, it specifically can be with " static pressure is twice, high
Frequency vibration is twice " combination to iron tailings layer of sand carry out multipass compacting, field experiment construct when, in the above described manner to iron tail
After ore in sand form layer carries out eight times compactings, with compactness for main examination criteria, detection structure shows that the compactness of iron tailings layer of sand reaches
To 96.6%, compactness is higher.Therefore not only consolidation effect is good for the debulking methods that static pressure and dither interval use, Neng Gouti
Elevated formation level structural stability, and short construction period, preferable operability is high at the construction field (site).
It certainly, can also be using " static pressure is primary, and high-frequency vibration is primary " or " static pressure three times, high-frequency vibration when Specific construction
Combinations, the application are not specifically limited this three times " etc..
Further, can be preferably compacted iron tailings layer of sand, iron tailings layer of sand can be laid in two times, specifically,
The first iron tailings layer of sand can be first laid in skin rock layers going down the hill, and the mode used by static pressure mode and dither interval
It is compacted the first iron tailings layer of sand, is then laid with the second iron tailings layer of sand in roadbed slot and on the first iron tailings layer of sand again, and
The second iron tailings layer of sand is compacted by the mode that static pressure mode and dither interval use.
Specifically, the loose laying depth of the first iron tailings layer of sand and the second iron tailings layer of sand all can be 40cm, wherein pine paving
Thickness refers to the laying depth before the compacting of iron tailings sand.
S4: being laid with skin rock layers of going up a hill on iron tailings layer of sand, forms roadbed matrix 1;
S5: using clay satisfy the need 1 two sides of base matrix carry out bound edge protection.
It is laid with iron tailings layer of sand between skin rock layers and skin rock layers of going up a hill going down the hill, using mountain skin stone material bottoming and binds,
And bound edge protection is carried out using clay 1 two sides of base matrix of satisfying the need, iron tailings layer of sand is wrapped in interior, iron tailings sand can be effectively prevent
Roadbed is acted on by rainwash and is destroyed, and increases road stability.
On the basis of above-mentioned each specific embodiment, the roadbed construction method that the specific embodiment of the invention provides, also
May include,
In roadbed paving to embankment thereon and lower embankment line of demarcation, it is laid with along width of subgrade direction for measuring roadbed cross
The lateral optical cable 2 of Section Settlement deformation, is laid with longitudinal light for measuring roadbed vertical section sedimentation and deformation along roadbed length direction
Cable 3.
To improve measurement accuracy, a plurality of lateral optical cable 2 and longitudinal optical cable 3, specifically, Ke Yishe can be laid in roadbed
Three lateral optical cables 2 are set, three lateral optical cables 2 are laid on roadbed head and the tail both ends and middle position respectively;In addition, in the vertical of roadbed
It is equipped with longitudinal optical cable 3 at position at left and right sides of to center line and apart from longitudinal centre line 1m and 2.5m, i.e., is laid with altogether
There are four longitudinal optical cables 3.
Specifically after the completion of integral construction, the tail optical fiber by lateral optical cable 2 and longitudinal optical cable 3 is needed to introduce monitoring room, with for
Subsequent monitoring is prepared.
Further, the specific embodiment of the invention provide roadbed construction method, can also include, roadbed paving extremely
When embankment is with lower embankment line of demarcation thereon, it is laid with the first layer fibre optical sensor for monitoring roadbed temperature;
In roadbed paving to its embankment and roadbed line of demarcation, it is laid with the second layer Fibre Optical Sensor for monitoring roadbed temperature
Device.
First layer fibre optical sensor and second layer Fibre Optical Sensor implement body may each comprise multiple fibre optical sensors, Mei Geguang
Position where fiber sensor is a monitoring point, it is preferable that first layer fibre optical sensor and second layer fibre optical sensor
Position can correspond, i.e., after moving a certain distance sensor each in first layer fibre optical sensor present position vertically upward
It is then each sensor present position in second layer fibre optical sensor, vertical distribution has two on each monitoring section of roadbed in this way
A monitoring point can constantly monitor the temperature on the same section of roadbed at different height.It may determine that by monitoring roadbed temperature
Roadbed local environment, and then can make comparisons to subgrade stability under varying environment.
Certainly, the specific setting position of fibre optical sensor is not limited to above-mentioned position, can also be arranged in roadbed more
The fibre optical sensor of the number of plies improves measurement accuracy to increase the temperature monitoring point quantity in roadbed section vertical direction.
In addition to above-mentioned roadbed construction method, a specific embodiment of the invention also provides a kind of using above-mentioned construction method shape
At road structure, which is specifically included in go down the hill the skin rock layers, iron tailings being successively laid with from the bottom to top in roadbed slot
Layer of sand and skin rock layers of going up a hill, skin rock layers of going down the hill, iron tailings layer of sand and skin rock layers of going up a hill successively are laid with and form roadbed matrix 1, roadbed
1 two sides of matrix are equipped with clay bound edge protective layer.
Wherein, it when iron tailings layer of sand is laid with, can be compacted in such a way that static pressure and dither interval use, compacting effect
Fruit is good, and skin rock layers of going up a hill are re-layed after compacting, can be improved road structure stability.
Can to be preferably compacted iron tailings layer of sand, iron tailings layer of sand can be laid in two times, specifically, can be in roadbed
It is first laid with the first iron tailings layer of sand in slot, and the first iron tailings is compacted by the mode that static pressure mode and dither interval use
Layer of sand, is then laid with the second iron tailings layer of sand in roadbed slot and on the first iron tailings layer of sand again, and by static pressure mode and
The mode that dither interval uses is compacted the second iron tailings layer of sand.
Further, the road structure that the specific embodiment of the invention provides, is also provided in roadbed matrix 1 and is used for
The lateral optical cable 2 of subgrade cross section sedimentation and deformation and longitudinal optical cable 3 for measuring roadbed vertical section sedimentation and deformation are measured, it is horizontal
It is laid with to optical cable 2 along width of subgrade direction, longitudinal optical cable 3 is laid with along roadbed length direction;It is heavy by the cross section for monitoring roadbed
Drop deformation and vertical section sedimentation and deformation can be with the structural stabilities of accurate judgement roadbed.
Specifically, lateral optical cable 2 and longitudinal optical cable 3 can be laid at upper embankment and the lower embankment line of demarcation of roadbed, this
The measurement result at place can more react road structure stability.
In addition, a plurality of lateral optical cable 2 and longitudinal optical cable 3, tool can be laid in roadbed matrix 1 to improve measurement accuracy
Body, three lateral optical cables 2 and four longitudinal optical cables 3 can be set, three lateral optical cables 2 can be laid on roadbed head and the tail respectively
Both ends and middle position, four longitudinal optical cables 3 can be respectively provided at left and right sides of the longitudinal centre line of roadbed and apart from the longitudinal direction
At the position of center line 1m and 2.5m.Certainly, the specific setting quantity and position of lateral optical cable 2 and longitudinal optical cable 3 are not limited to
This, can be adjusted according to actual needs, within the scope of the present invention.
Further, the road structure that the specific embodiment of the invention provides, can also be from bottom to up in roadbed matrix 1
It is successively arranged multilayer fibers sensor, to be used to monitor roadbed temperature, to judge roadbed local environment.
Specifically, it can be equipped with two layers of fibre optical sensor, first layer fibre optical sensor can be laid on embankment on roadbed
At lower embankment line of demarcation, second layer fibre optical sensor can be laid at the line of demarcation of roadbed embankment and roadbed, be realized on road
There are two monitoring points for vertical distribution on each monitoring section of base, can constantly monitor on the same section of roadbed at different height
Temperature.Certainly, the specific set-up mode of fibre optical sensor, setting quantity are not limited to this, and can be adjusted according to actual needs
It is whole, it is within the scope of the present invention.
It should be noted that roadbed is the basis on track or road surface, it is the geotechnological structure by excavating or filling and formed
Build object, be roadbed below the bottom surface of road surface, roadbed is specifically divided into embankment and roadbed two parts, 0 to 0.8m below the bottom surface of road surface in
For roadbed, wherein be upper roadbed in 0 to 0.3m, 0.3m is to being lower roadbed between 0.8m;Apart from road surface bottom surface 0.8m, the following are roads
Dike, wherein 0.8m is to being upper embankment between 1.5m, and the following are lower embankments by 1.5m.
In addition, the laying height for skin rock layers of going down the hill specifically can be in the range of 0.5m to 1.0m, the paving for skin rock layers of going up a hill
If height specifically can be in the range of 0.8m, i.e., roadbed part can be laid with by mountain skin stone material entirely, the paving of iron tailings layer of sand
If height can then be determined according to practical roadbed height.
Roadbed construction method provided by the present invention and road structure are described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention.It should be pointed out that for those skilled in the art, not departing from this hair
, can be with several improvements and modifications are made to the present invention under the premise of bright principle, these improvement and modification also fall into power of the present invention
In the protection scope that benefit requires.
Claims (8)
1. a kind of roadbed construction method, which is characterized in that including,
It is laid with skin rock layers in roadbed slot;
It is described go down the hill skin rock layers on be laid with iron tailings layer of sand;
The iron tailings layer of sand is compacted in such a way that static pressure and dither interval use;
It is laid with skin rock layers of going up a hill on the iron tailings layer of sand, forms roadbed matrix;
Bound edge protection is carried out to roadbed matrix two sides using clay.
2. roadbed construction method according to claim 1, which is characterized in that it is described it is described go down the hill skin rock layers on be laid with iron
Tailing layer of sand;The iron tailings layer of sand is compacted in such a way that static pressure and dither interval use includes,
It is described go down the hill skin rock layers on be laid with the first iron tailings layer of sand, the mode used by static pressure mode and dither interval
It is compacted the first iron tailings layer of sand;
It is laid with the second iron tailings layer of sand on the first iron tailings layer of sand, is used by static pressure mode and dither interval
Mode is compacted the second iron tailings layer of sand.
3. roadbed construction method according to claim 1 or 2, which is characterized in that further include,
In roadbed paving to embankment thereon and lower embankment line of demarcation, it is laid with along width of subgrade direction for measuring subgrade cross section
The lateral optical cable of sedimentation and deformation is laid with longitudinal optical cable for measuring roadbed vertical section sedimentation and deformation along roadbed length direction.
4. roadbed construction method according to claim 3, which is characterized in that in roadbed head and the tail both ends and middle position Jun Pu
Equipped with the lateral optical cable;Position at left and right sides of the longitudinal centre line of roadbed and apart from longitudinal centre line 1m and 2.5m described in this
The place of setting is equipped with longitudinal optical cable.
5. roadbed construction method according to claim 3, which is characterized in that further include,
In roadbed paving to embankment thereon and lower embankment line of demarcation, it is laid with the first layer Fibre Optical Sensor for monitoring roadbed temperature
Device;
In roadbed paving to its embankment and roadbed line of demarcation, it is laid with the second layer fibre optical sensor for monitoring roadbed temperature.
6. a kind of road structure, which is characterized in that including being successively laid with from the bottom to top in roadbed slot and forming roadbed matrix
Go down the hill skin rock layers, iron tailings layer of sand and skin rock layers of going up a hill, what the iron tailings layer of sand was used by static pressure and dither interval
Mode is compacted, and roadbed matrix two sides are equipped with clay bound edge protective layer.
7. road structure according to claim 6, which is characterized in that be equipped in the roadbed matrix along width of subgrade direction
It is laid with and is used to measure the lateral optical cable of subgrade cross section sedimentation and deformation, and is laid with along roadbed length direction and is used to measure road
Longitudinal optical cable of base vertical section sedimentation and deformation.
8. road structure according to claim 7, which is characterized in that be successively arranged use from bottom to up in the roadbed matrix
In the multilayer fibers sensor of monitoring roadbed temperature.
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CN201811101261.7A CN109098059A (en) | 2018-09-20 | 2018-09-20 | A kind of roadbed construction method and a kind of road structure |
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CN201811101261.7A CN109098059A (en) | 2018-09-20 | 2018-09-20 | A kind of roadbed construction method and a kind of road structure |
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Citations (6)
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RU2273687C1 (en) * | 2005-02-24 | 2006-04-10 | Святослав Яковлевич Луцкий | Roadbed and roadbed forming method |
CN101900533A (en) * | 2010-07-23 | 2010-12-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Optical fiber grating measurement method for monitoring embankment section settlement |
CN203625741U (en) * | 2013-12-10 | 2014-06-04 | 山西省交通科学研究院 | Roadbed filled with tailing sand |
CN104631254A (en) * | 2014-12-26 | 2015-05-20 | 石家庄铁道大学 | Construction method of geogrid reinforced clay edge-covered tailing subgrade |
CN206189245U (en) * | 2016-08-09 | 2017-05-24 | 山西省交通科学研究院 | Highway bituminous pavement structure real -time supervision device |
CN208857610U (en) * | 2018-09-20 | 2019-05-14 | 吉林省交通规划设计院 | A kind of road structure |
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2018
- 2018-09-20 CN CN201811101261.7A patent/CN109098059A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2273687C1 (en) * | 2005-02-24 | 2006-04-10 | Святослав Яковлевич Луцкий | Roadbed and roadbed forming method |
CN101900533A (en) * | 2010-07-23 | 2010-12-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Optical fiber grating measurement method for monitoring embankment section settlement |
CN203625741U (en) * | 2013-12-10 | 2014-06-04 | 山西省交通科学研究院 | Roadbed filled with tailing sand |
CN104631254A (en) * | 2014-12-26 | 2015-05-20 | 石家庄铁道大学 | Construction method of geogrid reinforced clay edge-covered tailing subgrade |
CN206189245U (en) * | 2016-08-09 | 2017-05-24 | 山西省交通科学研究院 | Highway bituminous pavement structure real -time supervision device |
CN208857610U (en) * | 2018-09-20 | 2019-05-14 | 吉林省交通规划设计院 | A kind of road structure |
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