CN106894442A - A kind of reinforced sand soil barricade and construction method - Google Patents
A kind of reinforced sand soil barricade and construction method Download PDFInfo
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- CN106894442A CN106894442A CN201710121701.4A CN201710121701A CN106894442A CN 106894442 A CN106894442 A CN 106894442A CN 201710121701 A CN201710121701 A CN 201710121701A CN 106894442 A CN106894442 A CN 106894442A
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- filler
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- barricade
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0241—Retaining or protecting walls comprising retention means in the backfill the retention means being reinforced earth elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of reinforced sand soil barricade and construction method, it is made up of filler, the reinforcement and the part of shingle nail three arranged in filler；Excavate barricade substrate groove and carry out foundation construction in ground to be onstructed first, then on the basis of by building block come panel of building a wall, subsiding crack and expansion joint are set when panel is built a wall, GSZ is built between the building block of shingle nail at a certain distance, then eps foam plastic plate is pasted on shingle nail, and eps foam plastic plate is polished, finally backfilled using saponified residue coal ash soil light filling, the performance of filler should meet design requirement in compacting process in backfilling process, Manual is used near eps foam plastic plate, remaining position compacting is rolled using machine spreading, the compacting until each layer of GSZ muscle material laying of completion and filler pave, complete the construction of reinforced sand soil barricade.The present invention has simple structure, easy construction, through the premium properties such as durability, anti-aging.
Description
Technical field
The present invention relates to the retaining wall structure in Geotechnical Engineering, and in particular to a kind of reinforced sand soil barricade and construction party
Method.
Background technology
Reinforced earth bulkhead is a kind of sustaining retaining structure built using reinforced earth technology, and reinforced earth is that one kind is added in soil
The composite earth of bar strip, it is using the rubbing action between lacing wire and soil, the deformation condition for improving the soil body and the work for improving the soil body
Cheng Xingneng, so as to reach the purpose of the stabilization soil body.Current reinforced earth bulkhead comes with some shortcomings in terms of engineer applied, such as fill out
Material part needs to consume that substantial amounts of soil resource, lacing wire be high with the interface friction intensity between filler, panel is coupled weak with reinforced earth
Deng these shortcomings have impact on the popularization and application of reinforced earth bulkhead.Mainly there is increasing to the preferable reinforcement measure of reinforced earth bulkhead at present
Compactness, increase muscle material length and intensity of superimposed fill etc., but take these measure long construction periods and high cost.
The content of the invention
The present invention is for shortcoming and defect present on existing engineer applied aspect, there is provided a kind of reinforced sand soil barricade
And its construction method technical scheme.
To achieve the above object, the present invention provides following technical scheme
A kind of reinforced sand soil barricade, is made up of filler, the reinforcement and the part of shingle nail three arranged in filler；Wall
Panel uses blockwork structure；Eps foam plastic plate is set between shingle nail and filler；Described filler using saponified residue-
Flyash-soil light filling；Reinforcement uses GSZ, makes drawing coefficient excursion for 0.54-0.85, and GSZ is direct
It is pressed between the building block up and down of shingle nail.
As improvement, in saponified residue-flyash-soil that described filler is used：Saponified residue Particle size requirements exist
Between 0.075-2mm, the content of the CaO of saponified residue is more than 45%.
As improvement, in saponified residue-flyash-soil that described filler is used：Flyash requirement SiO2And Al2O3's
Content is more than 70%, and between 0.001-2mm, wherein particle of the particle diameter less than 0.074mm contains the particle size distribution of flyash
Amount is greater than 45%；Radii of soil particles in filler is less than 2mm.
As improvement, the physical characteristic of saponified residue-flyash-soil three's mixture that described filler is used：Naturally
Water content W scopes are 20%-50%, and proportion ρ scopes are 2.1-2.3, maximum dry density γmaxIt is 1170kg/m3。
As improvement, in saponified residue-flyash-soil that described filler is used：Flyash is 1 with the mass ratio of soil:
1.5-1:2.5, saponification slag is 1 with the mass ratio of soil:2-1:3.5.
A kind of construction method of reinforced sand soil barricade, comprises the following steps：
A the foundation construction of () reinforced sand soil barricade, first excavates the size gear bigger than basic outer rim on ground to be onstructed
Wall base kerve, sets blotter in barricade substrate groove, and basis is poured using C15 crushed stone concretes and formed, every on the basis of
One subsiding crack expansion joint with together with is set every a segment distance, and plank is soaked as joint sealing material using pitch；
When the building block of () shingle nail installs first piece b, first one layer of cement mortar of pad on the basis of is answered, makes its that stabilization to be installed,
Then with building block come panel of building a wall, cement mortar is filled in faulting of slab ends space between building block and basis；Dry is used between building block
Cement mortar laid dry is docked, and is built by laying bricks or stones in facade layering；
C () eps foam plastic plate is installed, should cohere mortar by eps foam plastic plate using what is configured by design size
Cohered with shingle nail, to keep extruding uniform during cohering；Milling tools should be also used afterwards by eps foam plastic plate
Surface rubbing；
D the installation laying of () GSZ, the GSZ plane laying length, vertical spacing all should be wanted by design
Ask and laid, the anchoring of its muscle material makes grid smooth through eps foam plastic plate, and is fixed on equidistantly distributed in building block
In U-shaped steel disc crotch, by the way that GSZ is fixed between two building blocks of shingle nail in U-shaped steel disc crotch；
E () backfills filler, the performance of filler should meet design requirement in compacting process, away from eps foam plastic plate 50-
Manual is carried out within 75cm, small-sized frog rammer compacting leveling afterwards paves GSZ muscle material in place, and away from EPS bubbles
Compacting can be rolled with machine spreading beyond foam plastic plate 50-75cm, until completing each layer of GSZ muscle material laying and filler
Pave compacting, that is, complete the construction of reinforced sand soil barricade.
As improvement, barricade substrate groove 25cm-35cm bigger than basic outer rim, the thickness of the blotter in step (a)
It is 15-25cm.
As improvement, in the step (a), when panel is built a wall set subsiding crack and expansion joint, the subsiding crack and
Together, its width is 1cm-2cm to expansion joint setting, can use the filling such as asphalt plank, cork sheet, pitch loose hemp fiber；Subsiding crack spacing,
Earthen foundation is 10m-30m, and rock foundation can suitably increase.
Used as improvement, in the step (e), specific requirement is during backfill filler：Discharging equipment and eps foam plastics
The distance of plate cannot be less than 1.0m, and discharging equipment can not be travelled on the muscle material band for do not cover filler, and must not disturb lower floor's muscle
Material；The maximum depth of spread of filler is 30cm, and carries out layering on request and pave, within eps foam plastic plate 50-75cm
Manual is carried out, small-sized frog rammer compacting leveling afterwards paves grid muscle material in place, and away from eps foam plastic plate 50-
Compacting can be rolled beyond 75cm with machine spreading；The compacting that paves of every layer of filler all should be by the above with the laying in place of GSZ
It is required that carrying out, the compacting until each layer of GSZ muscle material laying of completion and filler pave, and should be flattened, be checked, and it is right
Shingle nail carries out gradient or vertical correction, after design requirement acceptance(check) to be achieved, can carry out applying for building above
Work；Filler answers strict compaction in layers, and lift height is between 30cm and 15cm；Compacting criteria uses heavy compaction standard, away from EPS
Within plastic foamboard 50-75cm, compactness is not less than 90%；Beyond eps foam plastic plate 50-75cm, away from barricade substrate
In the groove bottom above 0.8m depth boundses of groove, compactness is more than 95%；Away from more than the groove bottom 0.8m of barricade substrate groove, compacting
Degree is more than 90%.
Used as improvement, the saponified residue-flyash-soil light filling makes requirement and is：Saponification ground-slag is used in filler
Coal Ash, the lowest temperature of construction is more than 5 degrees Celsius；The water content of flyash strictly to be controlled between 25%-40%；It is mixed
Conjunction material is mixed and stirred and mixed and stirred using premixing place, can in time be made and be timely used, and mixes and stirs place flat, solid；Uniform mixing
In saponification slag coal ash mixed material, the coal ash soil granule and the saponification slag granule more than 10mm of 25mm are not contain more than.
Compared with prior art, useful achievement of the invention is：
1st, reinforced sand soil barrier wall structure proposed by the present invention has the premium properties such as durability, anti-aging.
2nd, reinforced sand proposed by the present invention soil barrier wall structure is simple, easy construction.
3rd, present invention uses substantial amounts of saponification slag and flyash, recycling for saponification slag and flyash is realized, is saved
About land resource, alleviates the pressure of industrial residue landfill, decreases the problem of its pollution environment.
4th, the eps foam cushion that uses of the present invention significantly reduce the lateral deformation of panel, the sedimentation of filler and
Suffered lateral pressure, improves the anti-seismic performance of barrier wall structure, increased the resistance to overturning of barrier wall structure, improves it and resists
Shock stability, it is economic and environment-friendly；
5th, reinforced sand proposed by the present invention soil barrier wall structure use in proportion 2：3：Saponification slag-the fine coal of 6 mixing
Ash-native filler reduces the deadweight of filler, the strength and stiffness of filler is drastically increased, while also improving muscle material and filler
Between interface friction performance.
Brief description of the drawings
Fig. 1 is the cross-sectional view of present invention combination
Fig. 2 is the elevation of present invention combination
Fig. 3 is GSZ of the present invention and shingle nail connection diagram
In figure：1- shingle nails, 2-EPS plastic foamboards, 3- fillers, 4- GSZs, 5- bases, 6- building blocks, 7- sedimentations
Seam.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is further described：As shown in figure 1,
A kind of reinforced sand soil barricade, by filler 3, the reinforcement arranged in filler 3 and the part group of shingle nail 1 three
Into；Shingle nail 1 uses the structure of blockwork 6；Eps foam plastic plate 3 is set between shingle nail 1 and filler 3；Described filler 3 is adopted
With saponified residue-flyash-soil light filling；Reinforcement uses GSZ 4, makes drawing coefficient excursion for 0.54-0.85,
GSZ 4 is directly born against between the building block up and down 6 of shingle nail 1.
In saponified residue-flyash-soil that described filler 3 is used：Saponified residue Particle size requirements 0.075-2mm it
Between, the content of the CaO of saponified residue is more than 45%.
In saponified residue-flyash-soil that described filler 3 is used：Flyash requirement SiO2And Al2O3Content be more than
70%, between 0.001-2mm, wherein granule content of the particle diameter less than 0.074mm is greater than the particle size distribution of flyash
45%；Soil in mixed fillers 3 is gathered materials on the spot, and to carry out artificial screening, and grain diameter is less than 2mm.
The physical characteristic of saponified residue-flyash-soil three's mixture that described filler 3 is used：Natural moisture content W models
It is 20%-50% to enclose, and specific gravity range is 2.1-2.3, optimal proportion ρ=2.21, optimum moisture content WoptIt is 35%, maximum dry is close
Degree γmaxIt is 1170kg/m3。
In saponified residue-flyash-soil that described filler 3 is used：Flyash is 1 with the mass ratio of soil:1.5-1:
2.5, optimum quality ratio is 1:2；Saponification slag is 1 with the mass ratio of soil:2-1:3.5, optimum quality ratio is 1:3, it can be deduced that three
The optimum quality ratio of person：Saponification slag：Flyash：The mass ratio of soil is 2:3:6；
A kind of construction method of reinforced sand soil barricade, comprises the following steps：
A the basis 5 of () reinforced sand soil barricade is constructed, it is bigger than basic 5 outer rim first to excavate size on ground to be onstructed
Barricade substrate groove, barricade substrate groove sets blotter than the basic big 25cm-35cm of 5 outer rim in barricade substrate groove, described broken
The thickness of stone bed course is 15-25cm, and basis 5 is poured using C15 crushed stone concretes and formed, and is set every a segment distance on the basis of
One expansion joint with together with of subsiding crack 7, and plank is soaked as joint sealing material using pitch；
When the building block 6 of () shingle nail 1 installs first piece b, first one layer of cement mortar of pad on basis 5 is answered, it is installed steady
It is fixed, panel 1 of then being built a wall with building block 6, cement mortar is filled in faulting of slab ends space between building block 6 and basis 5；Adopted between building block 6
Docked with the laid dry of dry cement mortar, built by laying bricks or stones in facade layering；Subsiding crack 7 and expansion joint are set when panel 1 is built a wall, it is described
Together with expansion joint setting, its width is 1cm-2cm to subsiding crack 7, can use the filling such as asphalt plank, cork sheet, pitch loose hemp fiber；It is heavy
Drop 7 spacing of seam, earthen foundation is 10m-30m, and rock foundation can suitably increase.
C () eps foam plastic plate 3 is installed, should cohere mortar by eps foam plastic plate using what is configured by design size
3 are cohered with shingle nail 1, to keep extruding uniform during cohering；Milling tools should be also used afterwards by eps foam plastics
The surface rubbing of plate 3；
D the installation laying of () GSZ 4, the plane laying length of the GSZ 4, vertical spacing all should be by design
It is required that being laid, the anchoring of its muscle material makes grid smooth through eps foam plastic plate 3, and is fixed in building block 6 and equidistantly divides
In the U-shaped steel disc crotch of cloth, by the way that GSZ 4 is fixed between two building blocks 6 of shingle nail 1 in U-shaped steel disc crotch.
E () backfills filler 3, the performance of filler 3 should meet design requirement, discharging equipment and eps foam in compacting process
The distance of plastic plate 3 cannot be less than 1.0m, and discharging equipment can not be travelled on the muscle material band for do not cover filler 3, and must not be disturbed
Lower layers of reinforcement material；The maximum depth of spread of filler 3 is 30cm, and carries out layering on request and pave, away from eps foam plastic plate 350-
Manual is carried out within 75cm, small-sized frog rammer compacting leveling afterwards paves GSZ muscle material in place, and away from EPS bubbles
Compacting can be rolled beyond foam plastic plate 350-75cm with machine spreading；The compacting that paves of every layer of filler 3 is in place with GSZ 4
Laying all should be carried out by requirements above, the compacting until each layer of GSZ muscle material laying of completion and filler 3 pave, and should be carried out
Leveling, inspection, and gradient or vertical correction are carried out to shingle nail 1, after design requirement acceptance(check) to be achieved, can carry out
Structure (building) builds the construction of thing above.
Filler 3 answers strict compaction in layers, and lift height is between 30cm and 15cm；Compacting criteria uses heavy compaction mark
Standard, within eps foam plastic plate 50-75cm, compactness is not less than 90%；Beyond eps foam plastic plate 50-75cm, away from
In the groove bottom above 0.8m depth boundses of barricade substrate groove, compactness is more than 95%；Away from the groove bottom 0.8m of barricade substrate groove
More than, compactness is more than 90%.
Saponified residue-the flyash-soil light filling 3 makes requirement：In filler 3 using saponification slag-flyash-
Soil, the lowest temperature of construction is more than 5 degrees Celsius；The water content of flyash strictly to be controlled between 25%-40%, water content
Excessive, there may be liquefaction phenomenon, water content is too small, and flyash easily produces airborne dust, causes environmental pollution, it is desirable to contain for flyash
Water rate control is 35%；Compound is mixed and stirred and mixed and stirred using premixing place, can in time be made and be timely used, and mixing and stirring place will put down
It is smooth, solid, with mixing and stirring, with transport, with paving, be preferred with compacting；In the saponification slag coal ash mixed material of uniform mixing, be free of
There are the coal ash soil granule more than 25mm and the saponification slag granule more than 10mm.
Filler 3 below should be flattened during arrangement GSZ muscle material, by muscle material and the fixed strain of shingle nail 1, in case
Panel is extruded during compacting, layering is carried out according to the vertical spacing of GSZ 4 and be paved, is compacted；Filler 3 paves：Pave thickness
Degree wants uniformity, surfacing, and sets the horizontal wall inscription not less than 3%.
Muscle material of the invention refers to GSZ 4.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. a kind of reinforced sand soil barricade, is made up of filler, the reinforcement and the part of shingle nail three arranged in filler；Metope
Plate uses blockwork structure；Eps foam plastic plate is set between shingle nail and filler；Described filler uses saponified residue-powder
Coal ash-soil light filling；Reinforcement uses GSZ, makes drawing coefficient excursion for 0.54-0.85, and GSZ is directly pressed
Between the building block up and down of shingle nail.
2. it is a kind of according to claims 1 reinforced sand soil barricade, it is characterised in that：The soap that described filler is used
In change residue-flyash-soil：Between 0.075-2mm, the content of the CaO of saponified residue is more than saponified residue Particle size requirements
45%.
3. it is a kind of according to claims 1 reinforced sand soil barricade, it is characterised in that：The soap that described filler is used
In change residue-flyash-soil：Flyash requirement SiO2And Al2O3Content be more than 70%, the particle size distribution of flyash exists
Between 0.001-2mm, wherein granule content of the particle diameter less than 0.074mm is greater than 45%；Radii of soil particles in filler is less than
2mm。
4. it is a kind of according to claims 1 reinforced sand soil barricade, it is characterised in that：The soap that described filler is used
Change the physical characteristic of residue-flyash-soil three's mixture：Natural moisture content W scopes are 20%-50%, and proportion ρ scopes are
2.1-2.3, maximum dry density γmaxIt is 1170kg/m3。
5. it is a kind of according to claims 1 reinforced sand soil barricade, it is characterised in that：The soap that described filler is used
In change residue-flyash-soil：Flyash is 1 with the mass ratio of soil:1.5-1:2.5, saponification slag is 1 with the mass ratio of soil:2-1:
3.5。
6. it is a kind of as described in claim any one of 1-5 reinforced sand soil barricade construction method, it is characterised in that including
Following steps：
A the foundation construction of () reinforced sand soil barricade, first excavates the size barricade base bigger than basic outer rim on ground to be onstructed
Kerve, sets blotter in barricade substrate groove, and basis is poured using C15 crushed stone concretes and formed, every one on the basis of
Segment distance sets one subsiding crack expansion joint with together with, and soaks plank as joint sealing material using pitch；
When the building block of () shingle nail installs first piece b, first one layer of cement mortar of pad on the basis of is answered, make its that stabilization to be installed, then
With building block come panel of building a wall, cement mortar is filled in faulting of slab ends space between building block and basis；Dry cement is used between building block
Mortar laid dry is docked, and is built by laying bricks or stones in facade layering；
C () eps foam plastic plate is installed, should cohere mortar by eps foam plastic plate and wall using what is configured by design size
Panel is cohered, and to keep extruding uniform during cohering；Milling tools should be also used afterwards by eps foam plastic sheet surface
Polish；
D the installation laying of () GSZ, the GSZ plane laying length, vertical spacing all should be entered by design requirement
Row laying, the anchoring of its muscle material makes grid smooth through eps foam plastic plate, and is fixed on the U-shaped of equidistantly distributed in building block
In steel disc crotch, by the way that GSZ is fixed between two building blocks of shingle nail in U-shaped steel disc crotch；
(e) backfill filler, the performance of filler should meet design requirement in compacting process, away from eps foam plastic plate 50-75cm with
Manual is inside carried out, small-sized frog rammer compacting leveling afterwards paves GSZ muscle material in place, and away from eps foam plastics
Compacting can be rolled with machine spreading beyond plate 50-75cm, the pressure until each layer of GSZ muscle material laying of completion and filler pave
It is real, that is, complete the construction of reinforced sand soil barricade.
7. a kind of construction method of reinforced sand as claimed in claim 6 soil barricade, it is characterised in that：Gear in step (a)
Wall base kerve 25cm-35cm bigger than basic outer rim, the thickness of the blotter is 15-25cm.
8. a kind of construction method of reinforced sand as claimed in claim 6 soil barricade, it is characterised in that：In the step
A in (), subsiding crack and expansion joint are set when panel is built a wall, together with expansion joint setting, its width is the subsiding crack
1cm-2cm, can use the filling such as asphalt plank, cork sheet, pitch loose hemp fiber；Subsiding crack spacing, earthen foundation is 10m-30m.
9. a kind of construction method of reinforced sand as claimed in claim 6 soil barricade, it is characterised in that：The step (e)
In, specific requirement is during backfill filler：Discharging equipment cannot be less than 1.0m, unloader with the distance of eps foam plastic plate
Tool can not be travelled on the muscle material band for do not cover filler, and must not disturb lower layers of reinforcement material；The maximum depth of spread of filler is 30cm,
And layering is carried out on request to pave, and Manual, small-sized frog rammer compacting are carried out within eps foam plastic plate 50-75cm
Leveling, afterwards paves grid muscle material in place, and can roll compacting with machine spreading beyond eps foam plastic plate 50-75cm；
Pave compacting and the laying in place of GSZ of every layer of filler all should be carried out by requirements above, until completing each layer of geotechnological lattice
Compacting that grid muscle material is laid and filler paves, and should be flattened, checked, and gradient or vertical correction are carried out to shingle nail, treat
Reach after design requirement acceptance(check), the construction of building above can be carried out；Filler answers strict compaction in layers, lift height
Between 30cm and 15cm；Compacting criteria uses heavy compaction standard, and within eps foam plastic plate 50-75cm, compactness is not
Less than 90%；Beyond eps foam plastic plate 50-75cm, in the groove bottom above 0.8m depth boundses of barricade substrate groove, pressure
Solidity is more than 95%；Away from more than the groove bottom 0.8m of barricade substrate groove, compactness is more than 90%.
10. a kind of construction method of reinforced sand as claimed in claim 6 soil barricade, it is characterised in that：The saponification is residual
Slag-flyash-soil light filling makes requirement：Saponification slag coal ash soil is used in filler, the lowest temperature of construction is Celsius 5
It is more than degree；The water content of flyash strictly to be controlled between 25%-40%；Compound is mixed and stirred and mixed and stirred using premixing place,
Can in time make and timely use, mix and stir place flat, solid；In the saponification slag coal ash mixed material of uniform mixing, do not contain
Coal ash soil granule more than 25mm and the saponification slag granule more than 10mm.
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| CN107503370A (en) * | 2017-08-14 | 2017-12-22 | 河海大学 | The high barricade of one planting sand well combined type reinforced earth and preparation method |
| CN108222061A (en) * | 2018-03-29 | 2018-06-29 | 中冶成都勘察研究总院有限公司 | A kind of compound barricade of load retaining wall reinforcement |
| CN108978704A (en) * | 2018-08-14 | 2018-12-11 | 中国十七冶集团有限公司 | A kind of reinforced soil retaining wall and its construction method |
| CN109371989A (en) * | 2018-10-26 | 2019-02-22 | 华中科技大学 | A kind of combined type retaining structure and its construction method suitable for stability of slope supporting |
| CN111454567A (en) * | 2020-04-16 | 2020-07-28 | 航锦科技股份有限公司 | Preparation method for producing polyurethane imitation marble decorative material by using industrial saponified waste residue |
| CN111945775A (en) * | 2020-08-18 | 2020-11-17 | 中南大学 | Assembled expansive soil slope ecological shock attenuation reinforced earth double sided board unit and native barricade |
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| 何思明等: "《强震带边坡位移控制设计与柔性防护技术》", 30 June 2015 * |
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| CN109371989A (en) * | 2018-10-26 | 2019-02-22 | 华中科技大学 | A kind of combined type retaining structure and its construction method suitable for stability of slope supporting |
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Application publication date: 20170627 |