CN103938558A - Highway high-fill culvert unloading method and unloading structure based on sealed plastic container - Google Patents
Highway high-fill culvert unloading method and unloading structure based on sealed plastic container Download PDFInfo
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- CN103938558A CN103938558A CN201410192211.XA CN201410192211A CN103938558A CN 103938558 A CN103938558 A CN 103938558A CN 201410192211 A CN201410192211 A CN 201410192211A CN 103938558 A CN103938558 A CN 103938558A
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Abstract
The invention provides a highway high-fill culvert unloading method and an unloading structure based on a sealed plastic container. The highway high-fill culvert unloading method comprises the steps of filling embankment earth into two sides and the top of a culvert, reserving or excavating a unloading groove in the filled earth at the top of the culvert, filling a sealed plastic container and sandy soil into the unloading groove in a piled mode, wherein the sealed plastic container and the sandy soil form an unloading region. By gradually compressing the sealed plastic container in the unloading region, differential settlement of the filled earth at the upper portion of the unloading region occurs, the unloading arch effect is produced, most of embankment load at the top of the culvert is transferred to the filled earth on two sides of the culvert, the unloading effect is remarkably improved, culvert stress asymmetry phenomena are effectively decreased, the pressure concentration degree of the filled earth at the top of the culvert is reduced, and the culvert top cracking problem can be solved. In addition, the highway high-fill culvert unloading method and the unloading structure based on the sealed plastic container are simple in construction and wide in applicability, and the sealed plastic container can be an abandoned beverage bottle and is low in cost, green and environment-friendly.
Description
Technical field
The invention belongs to highway engineering technical field, be specifically related to a kind of high fill culvert off-load method of the highway based on sealed plastic container and load-relieving structure.
Background technology
On high filling section culvert, cover the depth of fill many more than 10 m, what have even can exceed 50 m.Because filled load is large, complicated topographical conditions, the stressed and deformation characteristic of culvert is often comparatively complicated, contains body and exists stress to concentrate and the problem such as differential settlement, easily causes various diseases in various degree, has saying of " ten contain nine splitting " at engineering circles.These diseases gently cause culvert cracking, seepage or ponding, heavy cause culvert structure destroy, even occur collapsing, have a strong impact on the normal use of road.
At present, to the off-load measure of the high fill culvert of highway mainly taking reinforcement off-load method as main.Reinforcement off-load method refers to that the bulk density of banketing that makes artificially to contain in top top local height and width range is less than both sides and bankets, and forms off-load hole; Above off-load hole, lay muscle material, muscle material two ends are anchored in respectively that both sides are closely knit bankets, and reaches and contains top off-load object simultaneously.Alleviate to some extent although reinforcement off-load method is contained top stress concentration phenomenon to high fill culvert, it still has the following disadvantages: it is limited that (1) contains top reinforcement off-load effect, contains top cracking phenomena and still exists; (2) reinforcement material adopts grid material conventionally, and due to its creep properties, off-load effect decays in time; (3) the inside and outside earth pillar stiffness difference of culvert is not obvious, and muscle material efficiency is not not fully exerted; (4) will obtain the off-load hole height that good off-load effect needs larger, construction and cost are higher; (5) easily cause the stressed asymmetry of culvert, cause culvert to contain top and leave and split with wall status.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of significantly improving and contain top off-load effect and highway high fill culvert off-load method and the load-relieving structure of construction simply, based on sealed plastic container.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The high fill culvert off-load of highway method based on sealed plastic container, be included in culvert both sides and top railway embankment using is banketed, and in top of conduit bankets reserved or excavation load reduction groove, to landfill sealed plastic container and sand in load reduction groove, sealed plastic container and sand form off-load district.
Above-mentionedly be specially to landfill sealed plastic container in load reduction groove and sand:
Successively backfill after sealed plastic container and sand mixing is entered to load reduction groove, after every layer of backfill, roll, every layer thickness is no more than 50cm.
Above-mentioned off-load district is positioned at directly over top of conduit.
Above-mentioned load reduction groove width equates with culvert width, and its degree of depth is 1/20 ~ 1/30 of the top of conduit depth of fill.
Above-mentioned sealed plastic container can be waste drinking bottles, and volume is no more than 500ml, and before mixing with sand, in sealed plastic container, atmospheric pressure is 1 standard atmospheric pressure.
Above-mentioned culvert is arch culvert or slab culvert.
Above-mentioned sand particle diameter is 1-3mm.
Adopt the high fill culvert off-load of the above-mentioned highway based on sealed plastic container can obtain a kind of culvert load-relieving structure, comprise and be arranged in the load reduction groove that top of conduit bankets, in load reduction groove, heap is filled with sealed plastic container and sand, and sealed plastic container and sand form off-load district.
Compare with existing reinforcement off-load method, the present invention has following beneficial effect:
1, gradually reducing by sealed plastic container in off-load district, cause the off-load district top differential settlement that bankets, produce relieving arch effect, making the most of embankment of top of conduit be passed to culvert both sides bankets, significantly improve off-load effect, effectively reduce culvert stressed asymmetric and reduce the top of conduit pressure concentration degree of banketing, can solve top of conduit cracking phenomena.
2, construction is simple, and applicability is wide, and sealed plastic container can adopt waste drinking bottles, with low cost, and environmental protection.
Brief description of the drawings
Fig. 1 is the high fill culvert load-relieving structure of highway of the present invention generalized section;
Fig. 2 is off-load plot structure schematic diagram of the present invention.
In figure, 1-culvert, 2-bankets, 3-off-load district, 4-ground, 5-load reduction groove, 6-waste drinking bottles, 7-sand.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
See Fig. 1 ~ 2, the present invention is by reserved in (2) are banketed at culvert (1) top or excavation load reduction groove (5), and to the middle landfill waste drinking bottles (6) of load reduction groove (5) and sand (7), waste drinking bottles (6) and sand (7) form off-load district (3), and off-load district (3) pass through relieving arch effect to culvert (1) off-load.Off-load district (3) is positioned at directly over culvert (1), and adopt waste drinking bottles (6) to mix rear backfill with sand (7) and enter load reduction groove (5), and grinding compacting.Culvert (1) can be slab culvert or arch culvert.
Load reduction groove (5) for embankment filled soil (2) while filling reserved or banket (2) filled and excavated with excavator afterwards, load reduction groove (5) width equates with culvert (1) width, and load reduction groove (5) degree of depth is culvert (1) top 1/20 ~ 1/30 of (2) height that bankets.
When after adopting waste drinking bottles (6) and sand (7) to mix, load reduction groove (5) is entered in backfill, successively fill, every layer thickness is no more than 50cm, and rolls.Waste drinking bottles (6) volume is no more than 500ml, and in bottle, atmospheric pressure is 1 standard atmospheric pressure, bottle sealing; Sand (7) particle diameter is 1-3mm.
In the present embodiment, the concrete building process of culvert load-relieving structure is as follows:
The first step, banketing (2) by related specifications requirement railway embankment using in culvert (1) both sides, fills to containing top mark high.
Second step continues railway embankment using and bankets (2) more than the plane of culvert top, and culvert (1) both sides railway embankment using is banketed (2) highly for containing 1/20 of the upper railway embankment using depth of fill in top, at the reserved load reduction groove not filling (3) equating with culvert width in culvert top.
The 3rd step, making the interior atmospheric pressure of waste drinking bottles (6) is 1 standard atmospheric pressure, and seals a bottle, and mixes with sand (7).
The 4th step, enters mixed waste drinking bottles (6) and sand (7) in load reduction groove (3) according to every layer of successively backfill of 30cm, and compacting, forms off-load district (3).
The 5th step, continues by successively railway embankment using banket (2) of related specifications requirement off-load district (3) end face is above.
In conjunction with Fig. 1, analyze the principle of the invention from load transfer mechanism:
In the time that embankment loading is above off-load district (3), because off-load district (3) hollow bottle is progressively compressed, cause the larger difference sedimentation of off-load district (3) and both sides embankment filled soil (2).This relative settlement makes culvert top embankment filled soil produce soil arching effect, makes part embankment be passed to culvert both sides and bankets (2), and be passed to ground (4), from having reduced in fact culvert (1) load.
Apply the present invention to certain speedway one high fill culvert in place, culvert is slab culvert, and high 1.5 m are contained on top and covered the depth of fill 16.0 m, and containing end ground is gravelly soil.In the of the same type high fill culvert of contiguous similar stratum one culvert top, place height to earth up 14.8 m of this culvert, adopt existing reinforcement off-load method to carry out off-load processing, two kinds of operating modes are monitored respectively to comparative analysis.Monitoring result shows, compared with existing reinforcement off-load method, the inventive method can make soil filled on the top of culvert pressure reduce more than 45%, and banket the everywhere amplitude of variation of pressure of top of conduit is significantly less than existing reinforcement off-load method operating mode.
Above-mentioned detailed description of the invention is a preferred embodiment of the present invention; be not for limiting enforcement of the present invention and claim scope; all equivalences of making according to the content described in the present patent application scope of patent protection change and modify, and all should be included in patent claim of the present invention.
Claims (7)
1. the high fill culvert off-load of the highway based on sealed plastic container method, is included in culvert both sides and top railway embankment using is banketed, and it is characterized in that:
Reserved or excavation load reduction groove in top of conduit bankets, and to landfill sealed plastic container and sand in load reduction groove, sealed plastic container and sand form off-load district.
2. the high fill culvert off-load of the highway based on sealed plastic container as claimed in claim 1 method, is characterized in that:
Described be specially to landfill sealed plastic container in load reduction groove and sand:
Successively backfill after sealed plastic container and sand mixing is entered to load reduction groove, after every layer of backfill, roll, every layer thickness is no more than 50cm.
3. the high fill culvert off-load of the highway based on sealed plastic container as claimed in claim 1 method, is characterized in that:
Described off-load district is positioned at directly over top of conduit.
4. the high fill culvert off-load of the highway based on sealed plastic container as claimed in claim 1 method, is characterized in that:
Described load reduction groove width equates with culvert width, and its degree of depth is 1/20 ~ 1/30 of the top of conduit depth of fill.
5. the high fill culvert off-load of the highway based on sealed plastic container as claimed in claim 1 method, is characterized in that:
Described sealed plastic container volume is no more than 500ml.
6. the high fill culvert off-load of the highway based on sealed plastic container as claimed in claim 1 method, is characterized in that:
Described sand particle diameter is 1-3mm.
7. the high fill culvert load-relieving structure of the highway based on sealed plastic container, is characterized in that:
Comprise and be arranged in the load reduction groove that top of conduit bankets, in load reduction groove, heap is filled with sealed plastic container and sand, and sealed plastic container and sand form off-load district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192211.XA CN103938558A (en) | 2014-05-08 | 2014-05-08 | Highway high-fill culvert unloading method and unloading structure based on sealed plastic container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192211.XA CN103938558A (en) | 2014-05-08 | 2014-05-08 | Highway high-fill culvert unloading method and unloading structure based on sealed plastic container |
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| CN103938558A true CN103938558A (en) | 2014-07-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836034A (en) * | 2017-03-09 | 2017-06-13 | 山西省交通科学研究院 | A kind of high roadbed slab culvert flexibility off-load system and construction method |
| CN107012803A (en) * | 2017-06-01 | 2017-08-04 | 湖北工业大学 | High roadbed culvert off-load and the control method and structure for preventing creep |
| CN108086176A (en) * | 2017-12-04 | 2018-05-29 | 中国电建集团中南勘测设计研究院有限公司 | A kind of box culvert backfill structure and earth-filling method |
| CN109208494A (en) * | 2018-10-16 | 2019-01-15 | 湖南省交通规划勘察设计院有限公司 | A kind of reinforcement steel corrugated plating arch form bridges and culverts structure |
| CN110438855A (en) * | 2019-07-19 | 2019-11-12 | 中国十七冶集团有限公司 | A kind of construction method of undercrossing tunnel bridges and culverts railway roadbed backfill |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836034A (en) * | 2017-03-09 | 2017-06-13 | 山西省交通科学研究院 | A kind of high roadbed slab culvert flexibility off-load system and construction method |
| CN107012803A (en) * | 2017-06-01 | 2017-08-04 | 湖北工业大学 | High roadbed culvert off-load and the control method and structure for preventing creep |
| CN108086176A (en) * | 2017-12-04 | 2018-05-29 | 中国电建集团中南勘测设计研究院有限公司 | A kind of box culvert backfill structure and earth-filling method |
| CN109208494A (en) * | 2018-10-16 | 2019-01-15 | 湖南省交通规划勘察设计院有限公司 | A kind of reinforcement steel corrugated plating arch form bridges and culverts structure |
| CN110438855A (en) * | 2019-07-19 | 2019-11-12 | 中国十七冶集团有限公司 | A kind of construction method of undercrossing tunnel bridges and culverts railway roadbed backfill |
| CN110438855B (en) * | 2019-07-19 | 2020-12-04 | 中国十七冶集团有限公司 | Construction method for backfilling underneath-crossing railway bridge and culvert road bed |
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Application publication date: 20140723 |
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