CN207567572U - A kind of Foam lightweight soil railway bed structure - Google Patents
A kind of Foam lightweight soil railway bed structure Download PDFInfo
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- CN207567572U CN207567572U CN201720794089.2U CN201720794089U CN207567572U CN 207567572 U CN207567572 U CN 207567572U CN 201720794089 U CN201720794089 U CN 201720794089U CN 207567572 U CN207567572 U CN 207567572U
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- lightweight soil
- soil
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- aerated concrete
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- 239000002689 soil Substances 0.000 title claims abstract description 84
- 239000006260 foam Substances 0.000 title claims abstract description 36
- 239000004567 concrete Substances 0.000 claims abstract description 53
- 239000011449 brick Substances 0.000 claims abstract description 9
- 239000004746 geotextile Substances 0.000 claims description 17
- 239000004570 mortar (masonry) Substances 0.000 claims description 14
- 239000004576 sand Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims 2
- 238000005345 coagulation Methods 0.000 claims 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
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- 238000012423 maintenance Methods 0.000 abstract description 5
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- 230000006835 compression Effects 0.000 description 2
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- 238000007596 consolidation process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- Road Paving Structures (AREA)
Abstract
The utility model is related to a kind of Foam lightweight soil railway bed structures.Road structure in the utility model builds into frame by laying bricks or stones, and pour Foam lightweight soil in the frame with autoclave aerated concrete building block；Its middle frame uses 400 500kg/m of dry density3Autoclave aerated concrete building block is built by laying bricks or stones, and roadbed upper strata light soil roadbed uses wet density as 550 600kg/m3Foam lightweight soil pour, lower floor's light soil roadbed use 500 550kg/m of wet density3Light soil pours, road structure in the utility model is more shorter than conventional roadbed filling construction period, save it is simple pour light soil advantage while, roadbed than being poured using light soil merely has higher bearing strength, each material performance of itself can be given full play in this way, and maintains good performance, can reduce subgrade defect, the maintenance cost during operation is reduced, is highly suitable for railway bed.
Description
Technical field
The utility model belongs to railway subgrade works field, is specifically related to a kind of Foam lightweight soil railway bed structure.
Background technology
In railway engineering, it is that sedimentation and deformation is excessive to cause the principal element of disease to engineering, is satisfied the need using conventional fillers
When base is filled, the reason of causing sedimentation and deformation excessive, subsoil soil was long-term in addition to the consolidation settlement of backfilling material itself
Excessive sedimentation and deformation can also be generated by bearing excessive additional load in addition to dead weight；In order to reduce the settlement after construction of railway, I
State's railway usually carries out consolidation process in implementation process, but railway shows during practical operation due to railway road
Base is filled by shot material of rock and soil, and the diseases such as differential settlement still exist under the action of the loads such as train, this increasing
Add the maintenance cost during railway operation, affect the ride comfort of railway and the operation peace of comfort or even threat train
Entirely.
In view of problem existing for above-mentioned existing Soft Roadbed, the present inventor is by continuous research, design, and warp is anti-
After retrial is made sample and improved, the utility model having practical value is created finally.
Invention content
The purpose of this utility model is that overcoming existing Soft Roadbed, there are differential settlements under the action of vehicle load etc.
The problem of disease, and a kind of Foam lightweight soil railway bed structure is provided, the technical problem to be solved is that mitigate roadbed itself
Weight reduces subgrade defect, so as to more practical.
The another object of the utility model is, accelerates speed of application, reduces the maintenance cost during operation, so as to more
Add practicality.
The purpose of this utility model and its technical problem is solved using following technical scheme to realize.According to this practicality
A kind of Foam lightweight soil railway bed structure of novel proposition, spy are built by laying bricks or stones into various forms of by autoclave aerated concrete building block
Frame structure, and pour light soil in the frame and form autoclave aerated concrete building block layer, the steam-pressing aero-concrete is built
The density of block is 400-500kg/m3, the autoclave aerated concrete building block lightweight soil layer from bottom to top can making multilayer, from
The width of lower and upper each layer successively reduces.
A kind of aforementioned Foam lightweight soil railway bed structure pours light soil as Foam lightweight soil in frame.
A kind of aforementioned Foam lightweight soil railway bed structure, further includes metal mesh, and the metal mesh is arranged on more
Between layer autoclave aerated concrete building block lightweight soil layer.
A kind of aforementioned Foam lightweight soil railway bed structure further includes blotter, the blotter making
On ground and between bottom autoclave aerated concrete building block lightweight soil layer.
A kind of aforementioned Foam lightweight soil railway bed structure further includes anti-seepage geotextile or antiseepage mortar and geotechnological lattice
Room adds layer of sand, and the geotechnical grid adds layer of sand to be arranged on the autoclave aerated concrete building block lightweight soil layer of the top,
The anti-seepage geotextile or antiseepage mortar is arranged between the ground and the blotter or is arranged on geotechnological lattice
Room adds between layer of sand and autoclave aerated concrete building block lightweight soil layer.
A kind of aforementioned Foam lightweight soil railway bed structure, further includes filler, steam pressurized mixed in the multilayer
Solidifying earth building blocks lightweight soil layer both sides making conventional fillers and padding and compacting.
A kind of aforementioned Foam lightweight soil railway bed structure, described in autoclave aerated concrete building block composition frame
Form include well shape, bar shaped, triangle.
Aforementioned autoclave aerated concrete building block roadbed, wherein the frame of the autoclave aerated concrete building block composition
Longitudinal direction is located at the underface of track plates.
Aforementioned a kind of Foam lightweight soil railway bed structure, wherein the Foam lightweight soil, upper strata light soil density
For 550-600kg/m3 3, other layer of density is 500-550kg/m3。
The utility model has clear advantage and advantageous effect compared with prior art.It at least has following advantages：
1st, the utility model bearing strength in the case of equal densities is big；This is because equal densities in the construction process
Autoclave aerated concrete building block compressive strength rate it is big with the compression strength of density foam light soil, such as dry density 500kg/
The compression strength of the high-class product of the autoclave aerated concrete building block of m is greater than equal to 3.5Mpa, and dry density is 500kg/m lightweights
The intensity of soil is 2.8Mpa；In light soil roadbed of the autoclave aerated concrete building block for frame, autoclave aerated concrete building block
The frame of composition constitutes main force structure, therefore its bearing strength is improved compared with light soil roadbed.
2nd, the utility model can be prefabricated using autoclave aerated concrete building block, therefore the quality of building block is ensured,
It can directly be built by laying bricks or stones during field application, and it can replace template, therefore template assembly and disassembly not needed in work progress, can built
Building a part of frame can start to pour later, form cross construction in a small range, accelerate speed of application；
3rd, the autoclave aerated concrete building block that the utility model uses is the roadbed of frame with all being carried out using light soil
The roadbed poured reduces cost and is mainly reflected in steam pressurized mix compared to not only increasing bearing strength and also reducing cost
Solidifying earth building blocks price is low；In addition subgrade rating is improved, therefore in practical applications can be to pouring lightweight in the present invention
The density of soil carries out appropriate reduction, these factors all effectively reduce construction cost.
4th, the utility model inherits the advantages of Foam lightweight soil pours roadbed, with little need for expropriation of land, does not need to be large-scale
Equipment, when construction, do not need to vibrate, and are not required to roll and conserve, and overcoming roadbed, that compacting is rolled during filling is uncompacted
Problem, it is difficult the problem of carrying out rolling compacting particularly to overcome changeover portion close to the conventional fillers of Abutment.
5th, the utility model reduces maintenance cost of the railway during operation, this is because steam-pressing aero-concrete is built
Block, which pours light soil roadbed, can effectively reduce disease during railway operation, so as to which maintenance cost is reduced.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow the above and other purpose, feature of the utility model
It can be clearer and more comprehensible with advantage, special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the composite structure sectional schematic diagram of the utility model.
Fig. 2 is the composite structure schematic top plan view of the utility model.
Wherein：
1：Ground 2：Blotter
3：Light soil 4：Metal mesh
5：Geotechnical grid adds layer of sand 6：Autoclave aerated concrete building block
7：Filler
8-1：First anti-seepage geotextile or antiseepage mortar
8-2：Second anti-seepage geotextile or antiseepage mortar
Specific embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes a kind of Foam lightweight soil railway bed structure its tool
Body embodiment, structure, method, step, feature and its effect are described in detail as after.
A kind of Foam lightweight soil railway bed structure of the utility model, is to build into frame by laying bricks or stones by autoclaved aerated concrete block
Frame structure, and pour light soil in the frame and form autoclaved aerated concrete block layer, frame uses density as 400-500kg/
m3Autoclaved aerated concrete block, the density of the light soil poured are poured according to the difference of position using different densities,
Wet density 550-600kg/m is used in upper subbase3Light soil, other layer of roadbed use wet density as 500-550kg/m3's
Light soil.
Embodiment 1
A kind of Foam lightweight soil railway bed structure in the utility model first embodiment, as depicted in figs. 1 and 2, by
Autoclave aerated concrete building block forms frame, and light soil is poured among the frame and forms autoclave aerated concrete building block layer, institute
The longitudinal direction of the frame of autoclave aerated concrete building block composition stated is located at the underface of track plates.
Entire roadbed includes ground 1, blotter 2, light soil 3, metal mesh 4, geotechnical grid and adds layer of sand 5, steam pressurized
Concrete segment 6, filler 7, the first anti-seepage geotextile or antiseepage mortar 8-1 and the second anti-seepage geotextile or antiseepage mortar 8-1, ginseng
It reads shown in Fig. 1, anti-seepage geotextile or antiseepage mortar 8-1 is equipped on ground 1, in first anti-seepage geotextile or antiseepage
Be equipped with the blotter 2 of 10cm thickness on mortar 8-1, roadbed height is 2.3m, be in the range of the downward 1m in roadbed top surface on
Layer autoclave aerated concrete building block layer, upper strata autoclave aerated concrete building block layer use wet density as 550-600kg/m3Lightweight
Soil forms in groined type frame in autoclave aerated concrete building block 6 poured in two times, and on upper strata, steam-pressing aero-concrete is built
One layer of metal mesh is laid between block layer and lower floor's autoclave aerated concrete building block layer, prevents the light soil poured from crack occur, under
Layer autoclave aerated concrete building block layer uses wet density as 500-550kg/m3Light soil in two times in steam-pressing aero-concrete
It is poured in the square frame of building block composition, the dry density of the autoclave aerated concrete building block 6 in entire roadbed uses
400-500kg/m3, light soil 3 is Foam lightweight soil in the present embodiment, by foaming agent, dilution, cement, water, early strength agent,
It is hardened according to the preparation process of Foam lightweight soil through physical-chemical reaction.Second anti-seepage geotextile or antiseepage mortar
8-2 is arranged in above top layer's autoclave aerated concrete building block layer, and it is described that the geotechnical grid adds layer of sand 5 to be arranged on
Above second anti-seepage geotextile or antiseepage mortar 8-2.The autoclave aerated concrete building block lightweight soil layer is from lower and each layer
Width successively reduces.
This example roadbed construction method is as follows：
1st, the processing of ground is first carried out from the lower to the upper.
2nd, after ground 1 has been handled, the leveling shown is handled, and sets one layer of infiltration geotextiles, in the upper of geotextiles
The blotter 2 of layer place mat 10cm, blotter 2 sets 4% gradient from centre to both sides, after the completion of the laying of blotter 2,
It is laid with one layer of anti-seepage geotextile or antiseepage mortar.
3rd, it is built according to requirements such as design width, orbital position, frame structures using autoclave aerated concrete building block 6
It builds, pouring for light soil 3 is carried out after a part is built by laying bricks or stones, and make to build by laying bricks or stones, pour light soil 3 and the formation stream of filler 7 of both sides
Water operation until reaching designed elevation, needs to be laid with metal mesh, the pouring layer of top layer between lower floor's roadbed and upper subbase
Plastic covering film is wanted to carry out moisture-keeping maintaining in surface.
4th, the top of upper strata autoclave aerated concrete building block layer sets one layer of anti-seepage geotextile or antiseepage mortar, and sets thickness
It spends and adds layer of sand 5 for the geotechnical grid of 10cm, upper part structure is the same as conventional railway roadbed design.
5th, it after the completion of overall structure, carries out brush slope and meets Railway Design requirement；And carry out slope protection project.
6th, the gradient of roadbed side slope is 1 in this example:1.5, in Foam lightweight soil base course at interval of 2 meters of settings, one PVC
Pipe carries out draining, and anti-seepage geotextile is polyethylene or polyvinyl chloride geotextiles.
Implementation column 2
A kind of Foam lightweight soil railway bed structure in the utility model second embodiment, is built by steam-pressing aero-concrete
Block builds into various forms of frame structures by laying bricks or stones, and pours light soil in the frame and form autoclave aerated concrete building block layer, described
Autoclave aerated concrete building block density be 400-500kg/m3, the autoclave aerated concrete building block lightweight soil layer is under
And it is upper can making multilayer, from bottom to top the width of each layer successively reduce.The present embodiment is three layers.The form of frame be bar shaped or
Triangle.Other structures are the same as embodiment 1.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation, although the utility model has been disclosed with preferred embodiment as above, be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification that foundation the technical essence of the utility model makees above example, still
Belong in the range of technical solutions of the utility model.
Claims (9)
1. a kind of Foam lightweight soil railway bed structure, which is characterized in that various shapes are built by laying bricks or stones by autoclave aerated concrete building block
The frame structure of formula, and pour light soil in the frame and form autoclave aerated concrete building block layer, the steam pressurized coagulation
The density of earth building blocks is 400-500kg/m3, the autoclave aerated concrete building block lightweight soil layer from bottom to top can making it is more
Layer, the width of each layer successively reduces from bottom to top.
2. a kind of Foam lightweight soil railway bed structure according to claim 1, which is characterized in that poured in frame light
Matter soil is Foam lightweight soil.
3. a kind of Foam lightweight soil railway bed structure according to any one in claim 1-2, it is characterised in that also
Including metal mesh, the metal mesh is arranged between multilayer autoclave aerated concrete building block lightweight soil layer.
4. a kind of Foam lightweight soil railway bed structure according to claim 1 or 2, it is characterised in that further include rubble pad
Layer, the blotter making is on ground and between bottom autoclave aerated concrete building block lightweight soil layer.
5. a kind of Foam lightweight soil railway bed structure according to claim 4, it is characterised in that further include antiseepage geotechnique
Cloth or antiseepage mortar and geotechnical grid add layer of sand, and the geotechnical grid adds layer of sand to be arranged in steam pressurized coagulation topmost
On earth building blocks lightweight soil layer, the anti-seepage geotextile or antiseepage mortar are arranged on the ground and the blotter
Between or be arranged on geotechnical grid and add between layer of sand and autoclave aerated concrete building block lightweight soil layer.
6. a kind of Foam lightweight soil railway bed structure according to any one in claim 1-2, it is characterised in that also
Including filler, in the multilayer autoclave aerated concrete building block lightweight soil layer both sides making conventional fillers and padding and compacting.
7. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that described is steam pressurized
The form of the frame of concrete segment composition includes well shape, bar shaped, triangle.
8. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that described is steam pressurized
The longitudinal direction of the frame of concrete segment composition is located at the underface of track plates.
9. a kind of Foam lightweight soil railway bed structure according to claim 8, it is characterised in that described is light-weight foamed
Soil, upper strata light soil density are 550-600kg/m3, other layer of density is 500-550kg/m3。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794089.2U CN207567572U (en) | 2017-07-03 | 2017-07-03 | A kind of Foam lightweight soil railway bed structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720794089.2U CN207567572U (en) | 2017-07-03 | 2017-07-03 | A kind of Foam lightweight soil railway bed structure |
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| Publication Number | Publication Date |
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| CN207567572U true CN207567572U (en) | 2018-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265921A (en) * | 2021-05-28 | 2021-08-17 | 中交投资咨询(北京)有限公司 | Foam light soil roadbed |
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2017
- 2017-07-03 CN CN201720794089.2U patent/CN207567572U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265921A (en) * | 2021-05-28 | 2021-08-17 | 中交投资咨询(北京)有限公司 | Foam light soil roadbed |
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