CN107245912A - A kind of Foam lightweight soil railway bed structure and engineering method - Google Patents
A kind of Foam lightweight soil railway bed structure and engineering method Download PDFInfo
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- CN107245912A CN107245912A CN201710533817.9A CN201710533817A CN107245912A CN 107245912 A CN107245912 A CN 107245912A CN 201710533817 A CN201710533817 A CN 201710533817A CN 107245912 A CN107245912 A CN 107245912A
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- lightweight soil
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- building block
- concrete building
- aerated concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
Abstract
The present invention relates to a kind of Foam lightweight soil railway bed structure and engineering method.Framework is built into by laying bricks or stones with autoclave aerated concrete building block in road structure in the present invention, and pours Foam lightweight soil in the frame；Its middle frame uses the 500kg/m of density 4003Autoclave aerated concrete building block is built by laying bricks or stones, and lightweight is earth roadbed at the middle and upper levels uses wet density for 550 600kg/m for roadbed3Foam lightweight soil pour, the earth roadbed 550kg/m of use wet density 500 of lower floor's lightweight3Foam lightweight soil is poured, road structure in the present invention is more shorter than conventional roadbed filling construction period, save it is simple pour light soil advantage while, there is higher bearing strength than the simple roadbed poured using light soil, each material performance of itself can be so given full play to, and maintains good load-carrying properties, roadbed later stage disease can be reduced, the maintenance cost during operation is saved, is highly suitable for railway bed.
Description
Technical field
The invention belongs to railway subgrade works field, a kind of Foam lightweight soil railway bed structure and work are specifically related to
Method.
Background technology
During construction of railways often built on soft base roadbed and for ensure circuit different structure thing between even transition,
Changeover portion need to be often set, and soft base and changeover portion once handle the bad principal element that will be produced disease, disease is caused to engineering
It is that sedimentation and deformation is excessive, when being filled using conventional fillers to roadbed, causes the reason for sedimentation and deformation is excessive to remove backfilling material
Outside the consolidation settlement of itself, excessive sedimentation can also be produced to subsoil soil by bearing excessive additional load in addition to deadweight for a long time
Deformation；In order to reduce the settlement after construction of railway, China railways generally carry out consolidation process in implementation process, but railway is in reality
Show during the operation on border, formed because railway bed is filled by shot material of rock and soil, in the presence of the loads such as train
The diseases such as differential settlement remain unchanged presence, which increase the maintenance cost during railway operation, have impact on the ride comfort of railway
And comfortableness, or even threaten the operation safety of train.
There is the problems such as road structure intractability is big, the present invention in view of sections such as above-mentioned existing soft base, changeover portions
People creates the present invention having practical value finally by constantly research, design, and after studying sample repeatedly and improving.
The content of the invention
It is an object of the present invention to which it is uneven in the presence of car load to overcome the sections such as existing soft base, changeover portion to exist
The problem of the diseases such as sedimentation, and provides Foam lightweight soil railway bed structure, technical problem to be solved be overcome soft base and
The differential settlement in the sections such as changeover portion, makes circuit more smooth out, more comfortably, has extraordinary effect in the strict location of settlement Control
Really, so that more practical.
Another object of the present invention is to accelerate speed of application, the maintenance cost during railway operation is reduced, so that more
Plus it is practical.
The object of the invention to solve the technical problems is realized using following technical scheme.According to present invention proposition
A kind of Foam lightweight soil railway bed structure, it is to build into various forms of framework knots by laying bricks or stones by autoclave aerated concrete building block
Structure, and light soil is poured in described frame structure, autoclave aerated concrete building block lightweight soil layer is formed, altogether with Multideck
Pressing aero-concrete building block lightweight soil layer, the frame structure uses density for 400-500kg/m3Autoclave aerated concrete building block,
The light soil density poured gradually increases from bottom to up.
Foregoing a kind of Foam lightweight soil railway bed structure, wherein the form of described frame structure includes well shape, bar
Shape, triangle.
Foregoing a kind of Foam lightweight soil railway bed structure, wherein the longitudinal direction of described frame structure is being located at track plates just
Lower section.
Foregoing a kind of Foam lightweight soil railway bed structure, wherein it is light for foam that light soil is poured in described frame structure
Matter soil, the density that described light soil is located at upper strata is 550-600kg/m3, other layer of light soil density is 500-550kg/m3。
A kind of foregoing Foam lightweight soil railway bed structure, it also includes wire netting, and described wire netting is arranged on many
Between layer autoclave aerated concrete building block lightweight soil layer.
A kind of foregoing Foam lightweight soil railway bed structure, it also includes bed course, described bed course making ground it
On, under bottom autoclave aerated concrete building block lightweight soil layer, one layer of anti-seepage geotextile or painting are laid in bed course bottom
Smear antiseepage mortar.
A kind of foregoing Foam lightweight soil railway bed structure, its also including geotechnical grid add layer of sand and anti-seepage geotextile or
Antiseepage sand bedding course, sets geotechnical grid to add layer of sand in roadbed top layer, adds layer of sand bottom to set antiseepage soil in described geotechnical grid
Work cloth or antiseepage sand bedding course, or anti-seepage geotextile or antiseepage screed are arranged between described ground and described bed course.
A kind of foregoing Foam lightweight soil railway bed structure, it also includes filler, steam pressurized mixed in described multilayer
Solidifying earth building blocks lightweight soil layer both sides making conventional fillers, tamp compression.
Foregoing a kind of Foam lightweight soil railway based structures, wherein described autoclave aerated concrete building block lightweight soil layer is certainly
Lower and upper energy making multilayer, from bottom ground to surface layer, the width of each layer successively reduces from bottom to top, and surface layer width is most narrow.
A kind of foregoing Foam lightweight soil railway bed structure, it also includes abutment or bridges and culverts, ground, surface layer of subgrade bed, its
Described in above ground making have described autoclave aerated concrete building block lightweight soil layer, described steam-pressing aero-concrete is built
Block lightweight soil layer from bottom to top can making multilayer, from bottom to surface layer, the width of each layer successively increases from bottom to top, surface layer width
It is most wide.
The object of the invention to solve the technical problems is also realized using following technical scheme.According to proposed by the present invention
A kind of engineering method of Foam lightweight soil railway bed structure, it is characterised in that：Its step is as follows：
Step 1：Prefabricated autoclave aerated concrete building block；
Step 2：The making bed course on ground；
Step 3：Prefabricated autoclave aerated concrete building block and composition frame structure are built by laying bricks or stones on bed course, in described framework knot
Light soil is poured in structure by several times, autoclave aerated concrete building block lightweight soil layer is formed；
Step 4：After the completion of pouring, wire netting is set on autoclave aerated concrete building block lightweight soil layer upper berth；
Step 5：Follow procedures 4 making multilayer autoclave aerated concrete building block lightweight soil layer and wire netting from bottom to top, most
Wire netting is not laid in the autoclave aerated concrete building block lightweight soil layer laying on upper strata, directly positioned at the steam pressurized of the superiors
Concrete segment lightweight soil layer upper berth builds geotechnical grid plus layer of sand or geotechnical grid plus layer of sand is laid on wire netting, in geotechnological lattice
Room, which adds, lays anti-seepage geotextile or antiseepage sand bedding course below layer of sand；
Step 6：The both sides making filler of described multilayer autoclave aerated concrete building block lightweight soil layer simultaneously tamps pressure.
The engineering method of foregoing a kind of Foam lightweight soil railway bed structure, it is characterised in that first laid after the step 1
There are anti-seepage geotextile or antiseepage sand bedding course, then re-lay bed course, other steps are with claim 14.
The present invention has clear advantage and beneficial effect compared with prior art.It at least has following advantages：
1st, present invention compression strength in the case of equal densities is big；Because in work progress equal densities steaming
The compressive strength rate of pressing aero-concrete building block is big with the compression strength of density foam light soil, such as dry density 500kg/m3's
The compression strength of the high-class product of autoclave aerated concrete building block is greater than equal to 3.5Mpa, and dry density is 500kg/m3Light soil
Intensity be 2.8Mpa；In autoclave aerated concrete building block is earth roadbed for the lightweight of framework, autoclave aerated concrete building block group
Into framework constitute main force structure, therefore it is earth roadbed with lightweight compared with its bearing strength be improved.
2nd, the present invention use autoclave aerated concrete building block can be with prefabricated, therefore the quality of building block is ensured, live
Using when can directly build by laying bricks or stones, and its can replace template, therefore work progress in do not need template assembly and disassembly, one can be built by laying bricks or stones
It can just start to pour after part frame, in a small range formation cross construction, accelerate speed of application；
3rd, the autoclave aerated concrete building block that the present invention is used is the roadbed of framework with all being poured using light soil
Roadbed compared to not only increasing bearing strength and also reducing cost, reduction cost is mainly reflected in steam-pressing aero-concrete
Building block price is low；In addition subgrade rating is improved in the present invention, therefore in actual applications can be to pouring light soil
Density carries out appropriate reduction, and these factors all effectively reduce construction cost.
4th, the present invention inherits the advantage that Foam lightweight soil pours roadbed, it is not necessary to large scale equipment, need not be shaken during construction
Smash, be not required to roll, overcome roadbed and the uncompacted problem of compacting is rolled during filling, particularly overcome changeover portion and lean on
The conventional fillers of nearly Abutment are difficult the problem of progress rolls compacting.
5th, present invention reduces the maintenance cost of railway, because it can effectively reduce the disease of railway bed, so
Its maintenance cost can be lowered during railway operation.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is second embodiment of the present invention combining structure sectional schematic diagram.
Fig. 2 is second embodiment of the present invention combining structure schematic top plan view figure.
Fig. 3 is third embodiment of the present invention combining structure sectional schematic diagram.
Fig. 4 is third embodiment of the present invention combining structure schematic top plan view figure.
Wherein：
1：Ground 2：Bed course
3：Light soil 4：Wire netting
5：Geotechnical grid adds layer of sand 6：Autoclave aerated concrete building block
7：Abutment 8：Filler
9-1：First anti-seepage geotextile or antiseepage sand bedding course
9-2：Second anti-seepage geotextile or antiseepage sand bedding course
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to its embodiment of a kind of Foam lightweight soil railway bed structure proposed by the present invention,
Structure, method, step, feature and its effect, are described in detail as after.
Embodiment 1
Refering to shown in Fig. 1-Fig. 4, a kind of Foam lightweight soil railway bed structure of first embodiment of the invention, is by steam pressure
Air-entrained concrete building block 6 builds into various forms of frame structures by laying bricks or stones, and pours light soil 3 in described frame structure, is formed
Autoclave aerated concrete building block lightweight soil layer, the present invention has multilayer autoclave aerated concrete building block lightweight soil layer.The framework knot
Structure uses density for 400-500kg/m3Autoclave aerated concrete building block 6, the density of light soil 3 poured gradually increases from bottom to up
Plus.Light soil 3 is poured in frame structure for Foam lightweight soil, the density that described light soil is located at upper strata is 550-600kg/
m3, other layer of light soil density is 500-550kg/m3.The longitudinal direction of the frame structure is located at the underface of track plates.The framework knot
The form of structure is well shape, or bar shaped, or triangle.
A kind of Foam lightweight soil railway bed structure of the present invention, it also includes wire netting 4, bed course 2, geotechnical grid and adds sand
Layer 5 and anti-seepage geotextile or antiseepage sand bedding course and filler 8.Described wire netting 4 is arranged on multilayer autoclave aerated concrete building block
Between lightweight soil layer.The described making of bed course 2 on ground, positioned at bottom autoclave aerated concrete building block lightweight soil layer it
Under.Roadbed top layer set geotechnical grid add layer of sand 5, described geotechnical grid add the bottom of layer of sand 5 set anti-seepage geotextile or
Antiseepage sand bedding course, or anti-seepage geotextile or antiseepage screed are arranged between described ground 1 and described bed course 2.Institute
The multilayer autoclave aerated concrete building block lightweight soil layer both sides making conventional fillers 8 stated, tamp compression.
A kind of engineering method of Foam lightweight soil railway bed structure of the present invention, is comprised the following steps that：
Step 1：Prefabricated autoclave aerated concrete building block 6；
Step 2：The making bed course 2 on ground 1；
Step 3：Build prefabricated autoclave aerated concrete building block 6 by laying bricks or stones on bed course 2 and constitute frame structure, in described framework
Light soil 3 is poured in structure by several times, autoclave aerated concrete building block lightweight soil layer is formed；
Step 4：After the completion of pouring, wire netting is set on autoclave aerated concrete building block lightweight soil layer upper berth；
Step 5：Follow procedures 4 making multilayer autoclave aerated concrete building block lightweight soil layer and wire netting 4 from bottom to top, most
Wire netting is not laid in the autoclave aerated concrete building block lightweight soil layer laying on upper strata, directly positioned at the steam pressurized of the superiors
Concrete segment lightweight soil layer upper berth builds geotechnical grid plus layer of sand 5 or geotechnical grid plus layer of sand is laid on wire netting, in geotechnique
Cell compartment adds layer of sand 5 laying anti-seepage geotextile or antiseepage sand bedding course below；
Step 6：The both sides making filler 8 of described multilayer autoclave aerated concrete building block lightweight soil layer simultaneously tamps pressure.
Anti-seepage geotextile or antiseepage sand bedding course are first equipped with after the step 1, bed course is then re-layed.
Embodiment 2
Refering to shown in Fig. 1 and Fig. 2, a kind of Foam lightweight soil railway bed knot of the optimal second embodiment embodiment of the present invention
Structure, constitutes various forms of frame structures, the present embodiment is intersecting parallels frame structure, in institute by autoclave aerated concrete building block 6
Light soil 3 is poured in the intersecting parallels frame structure stated, autoclave aerated concrete building block lightweight soil layer is formed into, whole roadbed includes
Ground 1, bed course 2, light soil 3, wire netting 4, geotechnical grid add layer of sand 5, autoclave aerated concrete building block 6, filler 8, antiseepage soil
Work cloth or antiseepage screed.As shown in figure 1, autoclave aerated concrete building block lightweight soil layer from bottom to top can making multilayer, the bottom of from
Layer ground successively reduces to surface layer, the from bottom to top width of each layer, and surface layer width is most narrow.The first antiseepage is equipped with ground 1
Geotextiles or antiseepage screed 9-1.Bed course 2 is equipped with the first described anti-seepage geotextile or antiseepage screed 9-1, the pad
Layer 2 is blotter, and the thickness of the blotter is 10cm, and roadbed is highly 2.3m, in the range of the downward 1m of roadbed top surface
For upper strata autoclave aerated concrete building block lightweight soil layer, the upper strata autoclave aerated concrete building block lightweight soil layer use wet density for
550-600kg/m3Light soil and poured in two times, on upper strata, autoclave aerated concrete building block lightweight soil layer and steam pressure add
Layer of metal net 4 is equipped between gas concrete segment lightweight soil layer, prevents the light soil poured from crack occur, lower floor's steam pressure adds
Gas concrete segment lightweight soil layer uses wet density for 500-550kg/m3Light soil poured in two times, in whole roadbed
Autoclave aerated concrete building block 6 dry density use 400-500kg/m3, 6 point two of described autoclave aerated concrete building block
Layer is built by laying bricks or stones, and first layer is roadbed bottom, and the second layer is roadbed upper strata；Light soil is Foam lightweight soil in the present embodiment, its
By foaming agent, dilution, cement, water, early strength agent, according to the preparation technology of Foam lightweight soil through physical-chemical reaction hardening
Into.Positioned at the top of upper strata autoclave aerated concrete building block lightweight soil layer, the second anti-seepage geotextile or antiseepage screed 9-2 are set,
And set thickness to add layer of sand 5 for 10cm geotechnical grid on the second anti-seepage geotextile or antiseepage screed 9-2.
A kind of engineering method of Foam lightweight soil railway bed structure of the present embodiment is as follows：
1st, the processing of ground 2 is first carried out from the lower to the upper.
2nd, after ground 2 has been handled, the leveling processing shown, and one layer of infiltration geotextiles are set, in infiltration geotextiles
Above place mat 10cm blotter, blotter sets 4% gradient from centre to both sides, and blotter laying is completed
Afterwards, laying first layer anti-seepage geotextile or antiseepage screed 9-1.
3rd, require to be built using autoclave aerated concrete building block 6 according to design width, orbital position, frame structure etc.
Build, 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 8 of both sides
Water operation, until designed elevation is reached, in lower floor's autoclave aerated concrete building block lightweight soil layer and upper strata steam-pressing aero-concrete
Wire netting 4 is laid between building block lightweight soil layer, the layer surface that pours of the superiors wants plastic covering film to carry out moisture-keeping maintaining.
4th, the second anti-seepage geotextile or antiseepage screed are laid in the top of upper strata autoclave aerated concrete building block lightweight soil layer
9-2, and laying depth adds layer of sand 5 for 10cm geotechnical grid on the second anti-seepage geotextile or antiseepage screed 9-2, thereon
Portion's structure is with conventional railway roadbed design.
5th, after the completion of overall structure, carry out brush slope and meet Railway Design requirement；And carry out side slope protection engineering.
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.
Embodiment 3
Refering to shown in Fig. 3 and Fig. 4, a kind of Foam lightweight soil railway bed structure of the optimal 3rd embodiment of the present invention, by
The various forms of frame structures of the composition composition of autoclave aerated concrete building block 6, the present embodiment is delta-type frame structure, in institute
Light soil 3 is poured in the delta-type frame structure stated, autoclave aerated concrete building block lightweight soil layer is formed, totally 3 layers, is respectively
Upper strata autoclave aerated concrete building block lightweight soil layer, middle level autoclave aerated concrete building block lightweight soil layer and lower floor are steam pressurized mixed
Solidifying earth building blocks lightweight soil layer.Whole roadbed includes the side wall and ground 1, bed course 2, upper strata autoclave aerated concrete building block of abutment 7
Lightweight soil layer, middle level autoclave aerated concrete building block lightweight soil layer and lower floor's autoclave aerated concrete building block lightweight soil layer, metal
Net 4, geotechnical grid add layer of sand 5, filler 7, the first anti-seepage geotextile or antiseepage mortar 9-1 and the second anti-seepage geotextile and antiseepage sand
Starch 9-2.Ground 1, the first anti-seepage geotextile or antiseepage mortar 9-1, bed course 2, upper strata steam pressure are wherein respectively arranged with from the bottom to top
Air-entrained concrete building block lightweight soil layer, wire netting 4, middle level autoclave aerated concrete building block lightweight soil layer wire netting 4, lower floor's steam pressure
Air-entrained concrete building block lightweight soil layer, the second anti-seepage geotextile or antiseepage mortar 9-2 and geotechnical grid add layer of sand 5.It is steam pressurized
Fill filler and tamp compression on the outside of concrete segment lightweight soil layer, wherein, described surface layer to each layer steam-pressing aero-concrete
Building block lightweight soil layer is that width successively reduces from top to bottom.Other structures be the same as Example 1.The present embodiment 3 it is a kind of light-weight foamed
The engineering method be the same as Example 1 of unmanufactured iron road road structure.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent variations and the modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (12)
1. a kind of Foam lightweight soil railway bed structure, it is characterised in that be that various shapes are built into by laying bricks or stones by autoclave aerated concrete building block
The frame structure of formula, and light soil is poured in described frame structure, autoclave aerated concrete building block lightweight soil layer is formed, altogether
With multilayer autoclave aerated concrete building block lightweight soil layer, the frame structure uses density for 400-500kg/m3It is steam pressurized mixed
Solidifying earth building blocks, the light soil density poured gradually increases from bottom to up.
2. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that described frame structure
Form include well shape, bar shaped, triangle.
3. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that described frame structure
Longitudinal direction is located at the underface of track plates.
4. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that in described frame structure
Light soil is inside poured for Foam lightweight soil, the density that described light soil is located at upper strata is 550-600kg/m3, other layer of lightweight
Native density is 500-550kg/m3。
5. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that also including wire netting, institute
The wire netting stated is arranged between multilayer autoclave aerated concrete building block lightweight soil layer.
6. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that described also including bed course
Bed course making on ground, under bottom autoclave aerated concrete building block lightweight soil layer.
7. a kind of Foam lightweight soil railway bed structure according to claim 1, it is characterised in that also including geotechnical grid
Plus layer of sand and anti-seepage geotextile or antiseepage sand bedding course, set geotechnical grid to add layer of sand in roadbed top layer, in described geotechnical grid
Plus layer of sand bottom sets anti-seepage geotextile or antiseepage sand bedding course, or anti-seepage geotextile or antiseepage screed to be arranged on described ground
Between base and described bed course.
8. a kind of Foam lightweight soil railway bed structure according to claim, it is characterised in that also including filler, in institute
The multilayer autoclave aerated concrete building block lightweight soil layer both sides making conventional fillers stated, tamp compression.
9. a kind of Foam lightweight soil railway bed structure according to any one in claim 1-8, it is characterised in that institute
The autoclave aerated concrete building block lightweight soil layer stated from bottom to top can making multilayer, from bottom ground to surface layer, from bottom to top respectively
The width of layer successively reduces, and surface layer width is most narrow.
10. a kind of Foam lightweight soil railway bed structure according to any one in claim 1-8, it is characterised in that its
Also include abutment or bridges and culverts, ground, surface layer of subgrade bed, wherein making has described steam-pressing aero-concrete to build above the ground
Block lightweight soil layer, described autoclave aerated concrete building block lightweight soil layer from bottom to top can making multilayer, from bottom to surface layer, from
The width of lower and upper each layer successively increases, and surface layer width is most wide.
11. a kind of engineering method of Foam lightweight soil railway bed structure according to claim 1-10, it is characterised in that：It is walked
It is rapid as follows：
Step 1：Prefabricated autoclave aerated concrete building block；
Step 2：The making bed course on ground；
Step 3：Prefabricated autoclave aerated concrete building block and composition frame structure are built by laying bricks or stones on bed course, in described frame structure
Light soil is poured by several times, forms autoclave aerated concrete building block lightweight soil layer；
Step 4：After the completion of pouring, golden net is set on autoclave aerated concrete building block lightweight soil layer upper berth；
Step 5：Follow procedures 4 making multilayer autoclave aerated concrete building block lightweight soil layer and wire netting, the superiors from bottom to top
Autoclave aerated concrete building block lightweight soil layer laying or do not lay wire netting, directly in the steam pressurized coagulation positioned at the superiors
Earth building blocks lightweight soil layer upper berth builds geotechnical grid plus layer of sand or geotechnical grid plus layer of sand is laid on wire netting, in geotechnical grid plus
Anti-seepage geotextile or antiseepage sand bedding course are laid below layer of sand；
Step 6：The both sides making filler of described multilayer autoclave aerated concrete building block lightweight soil layer simultaneously tamps pressure.
12. the engineering method of a kind of Foam lightweight soil railway bed structure according to claim 11, it is characterised in that described
Anti-seepage geotextile or antiseepage sand bedding course are first equipped with after step 1, bed course is then re-layed, other steps are with claim 11.
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| CN201710533817.9A CN107245912B (en) | 2017-07-03 | 2017-07-03 | A kind of Foam lightweight soil railway bed structure and engineering method |
| PCT/CN2018/089670 WO2019007176A1 (en) | 2017-07-03 | 2018-06-01 | Foam light soil railway subgrade structure and construction method |
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| CN201710533817.9A CN107245912B (en) | 2017-07-03 | 2017-07-03 | A kind of Foam lightweight soil railway bed structure and engineering method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109112969A (en) * | 2018-09-21 | 2019-01-01 | 中冶成都勘察研究总院有限公司 | A kind of foam concrete road and bridge filling construction method |
| WO2019007176A1 (en) * | 2017-07-03 | 2019-01-10 | 中国铁道科学研究院铁道建筑研究所 | Foam light soil railway subgrade structure and construction method |
| CN110578290A (en) * | 2019-08-14 | 2019-12-17 | 山东高速工程检测有限公司 | Abutment back backfilling structure of bridgehead and construction method thereof |
| CN113718572A (en) * | 2021-01-26 | 2021-11-30 | 绍兴文理学院 | Light two grey dirt road bed structures based on solid useless utilization |
| CN113931026A (en) * | 2021-10-15 | 2022-01-14 | 山东双硕环境科技有限公司 | Integrally-interlocked dry-paving block light-load road and construction method |
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| CN111400806B (en) * | 2020-03-25 | 2022-07-08 | 中铁二院工程集团有限责任公司 | Anti-bump wide roadbed structure next to ballastless railway, roadbed system and design method |
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| WO2019007176A1 (en) * | 2017-07-03 | 2019-01-10 | 中国铁道科学研究院铁道建筑研究所 | Foam light soil railway subgrade structure and construction method |
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| CN110578290B (en) * | 2019-08-14 | 2024-04-05 | 山东高速工程检测有限公司 | Bridge abutment back backfill structure and construction method thereof |
| CN113718572A (en) * | 2021-01-26 | 2021-11-30 | 绍兴文理学院 | Light two grey dirt road bed structures based on solid useless utilization |
| CN113931026A (en) * | 2021-10-15 | 2022-01-14 | 山东双硕环境科技有限公司 | Integrally-interlocked dry-paving block light-load road and construction method |
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| Publication number | Publication date |
|---|---|
| CN107245912B (en) | 2019-04-30 |
| WO2019007176A1 (en) | 2019-01-10 |
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