CN108425357A - The construction technology of soft soil foundation - Google Patents
The construction technology of soft soil foundation Download PDFInfo
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- CN108425357A CN108425357A CN201710079944.6A CN201710079944A CN108425357A CN 108425357 A CN108425357 A CN 108425357A CN 201710079944 A CN201710079944 A CN 201710079944A CN 108425357 A CN108425357 A CN 108425357A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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Abstract
The invention discloses a kind of construction technology of soft soil foundation, drip irrigation device includes the following steps：（1）Boundary of works area delimited, roadbed slot is excavated in soft base and paving spills sand stone layer；（2）The hollow rubber band is laid in sand stone layer, plug sets water suction filler in the hollow rubber band；（3）Sponge heat-insulating layer is wound on the hollow rubber band, is tied up on sponge heat-insulating layer and is set steel wire；（4）Reinforcing steel bar upright post is plugged in the middle part of the hollow rubber band；（5）The cavity for being passed through thermoplastic adhesive is set to the inside of connecting rod, thermoplastic adhesive enters cavity and flowed out via the inner wall of connecting hole；（6）Immersed tube is laid on the hollow rubber band, it is laid with stone sand pulp layer on immersed tube and sets silicate cement mud layer on rubble screed upper berth, the construction technology of the application has excellent environmental-protecting performance, while ensure that there is excellent anti-heavy duty and structural strength on the soft soil foundation.
Description
Technical field
The present invention relates to rooms to build field, more particularly to a kind of construction technology of soft soil foundation.
Background technology
Since reform and opening-up, with the continuous improvement of national product power, the economy in China is grown rapidly, people's livelihood work
Journey is on the increase, and the construction scale of urban road is expanded, since newly-built, Realization of Modernized Construction for Urban road, Urban Underground are complicated,
Cause the difficulty of road construction to be continuously improved, the difficulty of road construction is more the increase in especially for the construction of soft soil foundation
Degree.
Weak soil refers to the natural fine grained soil of valley floor, strand, river shoal, lacustrine sediment, the low, infiltration coefficient with shearing strength
Feature low, water content is high, the settlement stability time is long, the compressed coefficient is high, void ratio is big, if soft soil foundation is without processing or processing
Method is improper, it will reduces the quality of road, the serious use that will influence road.
Currently, the Chinese patent that application publication number is CN105625301A in existing patent discloses a kind for the treatment of of soft foundation and applies
Immersed tube, is sunk to the below ground of soft base by work technique, and is constructed by the way of vibration sinking tube, and enhancing soft base ground is played
The effect of intensity.
But immersed tube is embedded in underground for a long time, when meeting with extremely cold or very hot weather, immersed tube can be sent out after being subjected to hot and cold alternation
Raw rupture etc., significantly reduces the service life of immersed tube.
Invention content
The object of the present invention is to provide a kind of construction technologies of the soft soil foundation for the service life helping to extend immersed tube.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of construction technology of soft soil foundation, includes the following steps：
(1) boundary of works area delimited, roadbed slot is excavated in soft base, paving spills sand stone layer in roadbed slot；
(2) the hollow rubber band is laid in sand stone layer, plug sets water suction filler in the hollow rubber band, and water suction filler is hollow
Density in rubber ring is 25~30kg/m3；
(3) sponge heat-insulating layer is wound on the hollow rubber band, is tied up on sponge heat-insulating layer and is set steel wire；
(4) plug reinforcing steel bar upright post in the middle part of the hollow rubber band, one end of reinforcing steel bar upright post is injected in sand stone layer, reinforcing steel bar upright post it is another
One end protrudes from the upper surface of the hollow rubber band, is arranged connecting rod on reinforcing steel bar upright post, and the both ends of connecting rod are respectively fitted over adjacent
On reinforcing steel bar upright post；
(5) connecting hole is arranged in the both ends of connecting rod, and the cavity for being passed through thermoplastic adhesive, thermoplastic is arranged in the inside of connecting rod
Property adhesive enter cavity and via the inner wall of connecting hole flow out；
(6) it is laid with immersed tube on the hollow rubber band, stone sand pulp layer is laid on immersed tube and sets silicon on rubble screed upper berth
Acid salt cement layer.
By using above-mentioned technical proposal, it is laid with sand stone layer on soft soil foundation, the hollow rubber band is laid in sand stone layer,
And sponge heat-insulating layer is wound on the hollow rubber band, connection hole, thermoplastic cement are flow to out of cavity using thermoplastic adhesive
Stick trickles on the hollow rubber band, reinforcing steel bar upright post is firmly bonded with the hollow rubber band, immersed tube is laid on the hollow rubber band
Top, good heat insulation effect is generated to it, to extend the service life of immersed tube；Meanwhile rubble is laid with above immersed tube
Screed and silicate cement mud layer, ensure that has excellent anti-heavy duty and structural strength on the soft soil foundation.
The present invention is further arranged to：The water suction filler includes the component cotton fibre 20~30 of following parts by weight
Part, 20~30 parts of bamboo charcoal fiber, 10~20 parts of montmorillonite, 5~10 parts of citric acid, 5~10 parts of polyacrylamide, diatom ooze 10~
20 parts.
By using above-mentioned technical proposal, by cotton fibre, bamboo charcoal fiber, montmorillonite and diatom ooze, polyacrylamide into
Row is blended, and the citric acid of liquid condition is added dropwise, and is prepared for the good water suction filler of structural integrity, and water suction filler is filled out
It fills in the hollow rubber band, when the environment in air is more moist, water suction filler plays water sorption, ensure that hollow rubber
Cushion rubber has more dry ambient enviroment, to extend the service life of the hollow rubber band.
The present invention is further arranged to：The hollow rubber band is by neoprene, ethylene propylene diene rubber or butylbenzene rubber
Adhesive curing is formed.
By using above-mentioned technical proposal, neoprene has good mechanical performance, oil resistant, heat-resisting, resistance to combustion, resistance to day
Light, resistance to ozone, acid and alkali-resistance have higher tensile strength, elongation at break and reversible crystallinity, cementability good；Ternary second
Third rubber is the copolymer of ethylene, propylene and a small amount of non-conjugated diene hydrocarbon, has excellent heat-resisting, weatherability and erosion-resistant
Ability；The performance of butadiene-styrene rubber is similar to natural rubber, have it is excellent wear-resisting, heat-resisting, ageing-resistant, can be with a variety of synthesis rubbers
Glue is used in combination, and is widely used, via the standby the hollow rubber band of any one of the above rubber system have excellent resistance to compression, wear-resisting property with
Resistance to extremely cold, very hot Changes in weather.
The present invention is further arranged to：The thermoplastic adhesive include following parts by weight 20~30 parts of component PE powder,
70~80 parts of acrylic acid esters co-polymer, 5~10 parts of polysiloxane, 1~3 part of cumyl peroxide, acetone 5~10
Part, 10~20 parts of aerosil, 3~5 parts of stannous chloride.
The present invention is further arranged to：The preparation method of the acrylic acid esters co-polymer is as follows by hydroxyethyl methacrylate second
Ester, maleic anhydride, Octylphenol polyoxyethylene ether, lauryl sodium sulfate, water and potassium peroxydisulfate are added in emulsifier, are opened
Stirring is emulsified, and then heats to 70~80 DEG C, and room temperature is down to after reacting 3~4h, adjusts pH value to neutrality.
There is excellent thermoplastic via the thermoplastic adhesive prepared by above-mentioned formula by using above-mentioned technical proposal
Property, it can rapidly be melt into fluid after the heating, rapidly inject in cavity, and the flowing that can be maintained for a long time
Property, it is not easy to cure, flow on the inner wall of connecting hole, help to improve connecting rod and the binding ability of the hollow rubber band, to thereon
Side immersed tube generate it is good it is heat-insulated, every cool property.
The present invention is further arranged to：The rubble screed is that rubble is crushed to 10cm hereinafter, simultaneously using crusher
The mortar that mixed ratio is 40~45% into broken rubble is mixed.
By using above-mentioned technical proposal, the grain size of rubble is limited in 10cm hereinafter, helping to play effective filling work
With, and rubble is blended with mortar, making to be stained with a large amount of mortar around rubble, rubble has larger viscosity,
And it is filled in above immersed tube, contributes to the associativity for enhancing immersed tube and rubble screed, in the soft base to improve the application
Paving structure structural integrity and anti-heavy duty.
The present invention is further arranged to：The mortar is by bentonite, clay, wollastonite powder, cement and polyurethane gluing
Agent is mixed.
By using above-mentioned technical proposal, the grain size via the mortar prepared by above-mentioned formula is smaller, can more uniformly
Ground is dispersed in the gap of rubble, and mortar has good viscosity, helps to make have viscosity around rubble, to enhance
With the associativity of immersed tube, the structural integrity on soft soil foundation is improved.
The present invention is further arranged to：The silicate cement mud layer includes the component Portland cement of following parts by weight
60~70 parts, 10~20 parts of flyash, 5~10 parts of sepiolite, 10~20 parts of natural zeolite, 10~20 parts of clay, carbon dust 5~10
Part, 1~5 part of three b propanol amine, 5~10 parts of niter cake, 40~80 parts of water.
By using above-mentioned technical proposal, silicate cement mud layer be by above-mentioned parts by weight component prepare, natural zeolite with
Niter cake generates complex role, contributes to the structural strength for enhancing Portland cement, meanwhile, clay, carbon dust, vitreous are micro-
The grain sizes such as pearl, flyash are different, help to be filled in mutual gap, to significantly improve the pressure resistance of the portland cement
Degree.
In conclusion the invention has the advantages that：
The construction technology of the application is the excavation roadbed slot first in soft base, sand stone layer is laid with into roadbed slot, in sand stone layer
Fixation hollow rubber ring, and plug sets water suction filler inside it, and the hollow rubber band can be kept to have around more drying
Environment；Reinforcing steel bar upright post can firmly be bonded using thermoplastic adhesive with the hollow rubber band, improves the hollow rubber band
With the structural integrity of reinforcing steel bar upright post；Immersed tube is placed on the hollow rubber band, and stone sand pulp layer and silicate are laid on immersed tube
Cement layer is extended and is sunk inside it to be prepared for the paving structure for having on excellent heat-resisting, weatherability soft soil foundation
The service life of pipe.
Specific implementation mode
Invention is further described in detail with reference to embodiments.
The conversion of parts by weight and common mass unit used in this application：1 parts by weight=10g.
Embodiment one：
(1) preparation method of acrylic acid esters co-polymer is as follows：
By 30 parts of hydroxyethyl methacrylates, 40 parts of maleic anhydrides, 15 parts of water, 1 part of lauryl sodium sulfate, 1 part of octyl phenol
Polyoxyethylene ether and 1 part of potassium peroxydisulfate are added in emulsifier, are opened stirring and are emulsified, mixing speed 75r/min, then
70 DEG C are warming up to, is cooled down after reacting 3h, pH value is adjusted to 7, then dries 2h in 200 DEG C of high temperature drying box, be made sticky
Spend higher acrylic acid esters co-polymer.
(2) preparation method of thermoplastic adhesive：
20 parts of PE powder are put on a mill, it is 120 DEG C to adjust temperature, heating time 30min；70 parts of esters of acrylic acid are total to
Polymers is divided equally 3 times and is placed on a mill, and pours into 4 parts of stannous chlorides, after being kneaded 60min；Continue to pour into 15 parts of gas phase dioxies
SiClx and 8 parts of polysiloxane, 2 parts of cumyl peroxides and 6 parts of acetone are kneaded 30min, and thermoplastic binder is made
Agent.
(3) preparation method of water suction filler：
By 20 parts of cotton fibres, 30 parts of bamboo charcoal fibers, 15 parts of montmorillonites, 8 parts of citric acids, 16 parts of diatom oozes, 6 parts of polyacrylamides
It is sufficiently stirred in input to high speed blender, stirs 30min.
(4) preparation method of rubble screed：
Rubble is crushed using crusher, keeps the average grain diameter of rubble in 10cm hereinafter, being mixed into broken rubble
Enter mortar, mortar be by etc. bentonite, clay, wollastonite powder, cement and the polyurethane adhesive of weight ratios be mixed, limit broken
The weight ratio of stone and mortar is 3: 2, is sufficiently mixed rubble and mortar in blender, contributes to rubble surface adhesion big
Mixture after above-mentioned stirring is uniformly laid on the top of immersed tube by the mortar of amount.
(5) preparation method of silicate cement mud layer：
By 65 parts of Portland cements, 13 parts of flyash, 15 parts of sepiolites, 13 parts of natural zeolites, 12 parts of clays, 6 parts of carbon dusts,
3 part of three b propanol amine, 5 parts of niter cakes, 40 parts of water are put into batch mixer and are blended and are stirred, mixing time 1h；Then
Mixture after stirring is coated uniformly on to the top of rubble screed.
(6) construction technology of soft base includes the following steps：
(1) boundary of works area delimited, the roadbed slot of 1m*1m*1m is excavated in soft base, sand stone layer is largely laid with into roadbed slot, spread
If thickness is 0.4m；
(2) the hollow rubber band of a diameter of 0.3m is laid in sand stone layer, the hollow rubber band is made of neoprene solidification, shape
Shape is tire-like, and the hollow rubber band is equidistantly laid in roadbed slot, and water suction filler is tightly filled in the hollow rubber band
It is interior；
(3) it is tightly wound sponge heat-insulating layer on the hollow rubber band, and is tightly tied up using steel wire and is located at sponge heat-insulating layer
On sponge heat-insulating layer to be fixed on the hollow rubber band；
(4) columned reinforcing steel bar upright post is plugged in the middle part of the hollow rubber band, one end of reinforcing steel bar upright post is injected in sand stone layer, reinforcing bar
The other end of column protrudes from the upper surface of the hollow rubber band；
(5) adjacent reinforcing steel bar upright post is attached using connecting rod, the both ends of connecting rod open up connecting hole, the inside of connecting rod
Cavity is set, thermoplastic adhesive is injected into cavity, and flow out from the inner wall direction of connecting hole, thermoplastic adhesive's trickling exists
On the hollow rubber band, be conducive to reinforcing steel bar upright post being closely adhered on the hollow rubber band；
(6) it is laid with immersed tube on the hollow rubber band, rubble screed is laid with to cover the hollow rubber band completely in the top of immersed tube
Lid, is uniformly laid with silicate cement mud layer on rubble screed.
Embodiment two：
(1) preparation method of acrylic acid esters co-polymer is as follows：
By 35 parts of hydroxyethyl methacrylates, 35 parts of maleic anhydrides, 15 parts of water, 1 part of lauryl sodium sulfate, 1 part of octyl phenol
Polyoxyethylene ether and 1 part of potassium peroxydisulfate are added in emulsifier, are opened stirring and are emulsified, mixing speed 75r/min, then
70 DEG C are warming up to, is cooled down after reacting 3h, pH value is adjusted to 7, then dries 2h in 200 DEG C of high temperature drying box, be made sticky
Spend higher acrylic acid esters co-polymer.
(2) preparation method of thermoplastic adhesive：
20 parts of PE powder are put on a mill, it is 120 DEG C to adjust temperature, heating time 30min；70 parts of esters of acrylic acid are total to
Polymers is divided equally 3 times and is placed on a mill, and pours into 3 parts of stannous chlorides, after being kneaded 60min；Continue to pour into 18 parts of gas phase dioxies
SiClx and 6 parts of polysiloxane, 1 part of cumyl peroxide and 7 parts of acetone are kneaded 30min, and thermoplastic binder is made
Agent.
(3) preparation method of water suction filler：
By 25 parts of cotton fibres, 25 parts of bamboo charcoal fibers, 15 parts of montmorillonites, 10 parts of citric acids, 12 parts of diatom oozes, 8 parts of polyacrylamides
Amine is put into be sufficiently stirred into high speed blender, stirs 30min.
(4) preparation method of rubble screed：
Rubble is crushed using crusher, keeps the average grain diameter of rubble in 10cm hereinafter, being mixed into broken rubble
Enter mortar, mortar be by identical weight than bentonite, clay, wollastonite powder, cement and polyurethane adhesive be mixed, limit
The weight ratio of rubble and mortar is 3: 2, is sufficiently mixed rubble and mortar in blender, contributes to rubble surface adhesion
Mixture after above-mentioned stirring is uniformly laid on the top of immersed tube by a large amount of mortar.
(5) preparation method of silicate cement mud layer：
By 62 parts of Portland cements, 13 parts of flyash, 15 parts of sepiolites, 10 parts of natural zeolites, 15 parts of clays, 8 parts of carbon dusts,
2 part of three b propanol amine, 6 parts of niter cakes, 45 parts of water are put into batch mixer and are blended and are stirred, mixing time 1h；Then
Mixture after stirring is coated uniformly on to the top of rubble screed.
(6) construction technology of soft base includes the following steps：
(1) boundary of works area delimited, the roadbed slot of 1m*1m*1m is excavated in soft base, sand stone layer is largely laid with into roadbed slot, spread
If thickness is 0.4m；
(2) the hollow rubber band of a diameter of 0.3m is laid in sand stone layer, the hollow rubber band is made of neoprene solidification, shape
Shape is tire-like, and the hollow rubber band is equidistantly laid in roadbed slot, and water suction filler is tightly filled in the hollow rubber band
It is interior；
(3) it is tightly wound sponge heat-insulating layer on the hollow rubber band, and is tightly tied up using steel wire and is located at sponge heat-insulating layer
On sponge heat-insulating layer to be fixed on the hollow rubber band；
(4) columned reinforcing steel bar upright post is plugged in the middle part of the hollow rubber band, one end of reinforcing steel bar upright post is injected in sand stone layer, reinforcing bar
The other end of column protrudes from the upper surface of the hollow rubber band；
(5) adjacent reinforcing steel bar upright post is attached using connecting rod, the both ends of connecting rod open up connecting hole, the inside of connecting rod
Cavity is set, thermoplastic adhesive is injected into cavity, and flow out from the inner wall direction of connecting hole, thermoplastic adhesive's trickling exists
On the hollow rubber band, be conducive to reinforcing steel bar upright post being closely adhered on the hollow rubber band；
(6) it is laid with immersed tube on the hollow rubber band, rubble screed is laid with to cover the hollow rubber band completely in the top of immersed tube
Lid, is uniformly laid with silicate cement mud layer on rubble screed.
Embodiment three：
(1) preparation method of acrylic acid esters co-polymer is as follows：
By 40 parts of hydroxyethyl methacrylates, 30 parts of maleic anhydrides, 12 parts of water, 2 parts of lauryl sodium sulfate, 2 parts of octyl phenols
Polyoxyethylene ether and 2 parts of potassium peroxydisulfates are added in emulsifier, are opened stirring and are emulsified, mixing speed 75r/min, then
70 DEG C are warming up to, is cooled down after reacting 3h, pH value is adjusted to 7, then dries 2h in 200 DEG C of high temperature drying box, be made sticky
Spend higher acrylic acid esters co-polymer.
(2) preparation method of thermoplastic adhesive：
25 parts of PE powder are put on a mill, it is 120 DEG C to adjust temperature, heating time 30min；70 parts of esters of acrylic acid are total to
Polymers is divided equally 3 times and is placed on a mill, and pours into 3 parts of stannous chlorides, after being kneaded 60min；Continue to pour into 15 parts of gas phase dioxies
SiClx and 5 parts of polysiloxane, 1 part of cumyl peroxide and 5 parts of acetone are kneaded 30min, and thermoplastic binder is made
Agent.
(3) preparation method of water suction filler：
By 30 parts of cotton fibres, 20 parts of bamboo charcoal fibers, 12 parts of montmorillonites, 6 parts of citric acids, 12 parts of diatom oozes, 8 parts of polyacrylamides
It is sufficiently stirred in input to high speed blender, stirs 30min.
(4) preparation method of rubble screed：
Rubble is crushed using crusher, keeps the average grain diameter of rubble in 10cm hereinafter, being mixed into broken rubble
Enter mortar, mortar be by etc. bentonite, clay, wollastonite powder, cement and the polyurethane adhesive of weight ratios be mixed, limit broken
The weight ratio of stone and mortar is 3: 2, is sufficiently mixed rubble and mortar in blender, contributes to rubble surface adhesion big
Mixture after above-mentioned stirring is uniformly laid on the top of immersed tube by the mortar of amount.
(5) preparation method of silicate cement mud layer：
By 65 parts of Portland cements, 13 parts of flyash, 12 parts of sepiolites, 13 parts of natural zeolites, 13 parts of clays, 5 parts of carbon dusts,
4 part of three b propanol amine, 10 parts of niter cakes, 50 parts of water are put into batch mixer and are blended and are stirred, mixing time 1h；Then
Mixture after stirring is coated uniformly on to the top of rubble screed.
(6) construction technology of soft base includes the following steps：
(1) boundary of works area delimited, the roadbed slot of 1m*1m*1m is excavated in soft base, sand stone layer is largely laid with into roadbed slot, spread
If thickness is 0.4m；
(2) the hollow rubber band of a diameter of 0.3m is laid in sand stone layer, the hollow rubber band is made of neoprene solidification, shape
Shape is tire-like, and the hollow rubber band is equidistantly laid in roadbed slot, and water suction filler is tightly filled in the hollow rubber band
It is interior；
(3) it is tightly wound sponge heat-insulating layer on the hollow rubber band, and is tightly tied up using steel wire and is located at sponge heat-insulating layer
On sponge heat-insulating layer to be fixed on the hollow rubber band；
(4) columned reinforcing steel bar upright post is plugged in the middle part of the hollow rubber band, one end of reinforcing steel bar upright post is injected in sand stone layer, reinforcing bar
The other end of column protrudes from the upper surface of the hollow rubber band；
(5) adjacent reinforcing steel bar upright post is attached using connecting rod, the both ends of connecting rod open up connecting hole, the inside of connecting rod
Cavity is set, thermoplastic adhesive is injected into cavity, and flow out from the inner wall direction of connecting hole, thermoplastic adhesive's trickling exists
On the hollow rubber band, be conducive to reinforcing steel bar upright post being closely adhered on the hollow rubber band；
(6) it is laid with immersed tube on the hollow rubber band, rubble screed is laid with to cover the hollow rubber band completely in the top of immersed tube
Lid, is uniformly laid with silicate cement mud layer on rubble screed.
Comparative example：
(1) boundary of works area delimited, roadbed slot is excavated in soft base；
(2) immersed tube is set up into roadbed slot, is oppositely arranged between immersed tube, and is tightly injected in roadbed slot；
(3) into roadbed slot, paving spills a large amount of sandstone and paving spills asphalt surface course, and asphalt surface course is uniformly to be laid with to be formed by pitch.
Detection means：
Tensile splitting strength：Experiment is enterprising in Dalian University of Technology's laboratory 3000KN microcomputer controlled electro-hydraulic servo pressure testing machines
Row, comprises the concrete steps that before the test, position to be cleaved is drawn in the middle part of test specimen；Then test specimen is placed on testing machine lower platen
Center, circular arc type backing plate and wooden three-ply board bed course, headblock slice width 0.5m, thickness are padded between upper lower platen and test specimen
0.01m, length are more than 0.5m；Testing machine is started, is first manually controlled to approach top board and test specimen, adjustment ball seat keeps contact equal
Weighing apparatus；It starts testing machine to automatically control, loading speed 0.05MPa/s, until component damage, food preservation test result.
The test result of test specimen tensile splitting strength is as shown in the table：
By upper table it is found that the attainable average split tensile strength of the test specimen institute of the present embodiment is far longer than existing in 5.5MPa or more
The split tensile strength for having technology has excellent jacking strength in soft base according to the road that the construction technology of the application is mated formation,
Contribute to the service life of extension road.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (8)
1. a kind of construction technology of soft soil foundation, it is characterised in that include the following steps：
（1）Boundary of works area delimited, roadbed slot is excavated in soft base, paving spills sand stone layer in roadbed slot；
（2）The hollow rubber band is laid in sand stone layer, plug sets water suction filler in the hollow rubber band, and water suction filler is hollow
Density in rubber ring is 25 ~ 30kg/m3；
（3）Sponge heat-insulating layer is wound on the hollow rubber band, is tied up on sponge heat-insulating layer and is set steel wire；
（4）Plug reinforcing steel bar upright post in the middle part of the hollow rubber band, one end of reinforcing steel bar upright post is injected in sand stone layer, reinforcing steel bar upright post it is another
One end protrudes from the upper surface of the hollow rubber band, is arranged connecting rod on reinforcing steel bar upright post, and the both ends of connecting rod are respectively fitted over adjacent
On reinforcing steel bar upright post；
（5）Connecting hole is arranged in the both ends of connecting rod, and the cavity for being passed through thermoplastic adhesive, thermoplastic is arranged in the inside of connecting rod
Property adhesive enter cavity and via the inner wall of connecting hole flow out；
（6）It is laid with immersed tube on the hollow rubber band, stone sand pulp layer is laid on immersed tube and sets silicon on rubble screed upper berth
Acid salt cement layer.
2. the construction technology of soft soil foundation according to claim 1, it is characterised in that the water suction filler includes as follows
The component of parts by weight：20 ~ 30 parts of cotton fibre, 20 ~ 30 parts of bamboo charcoal fiber, 10 ~ 20 parts of montmorillonite, 5 ~ 10 parts of citric acid,
5 ~ 10 parts of polyacrylamide, 10 ~ 20 parts of diatom ooze.
3. the construction technology of soft soil foundation according to claim 1, it is characterised in that：The hollow rubber band is by neoprene
Rubber, ethylene propylene diene rubber or butadiene-styrene rubber are formed by curing.
4. the construction technology of soft soil foundation according to claim 1, it is characterised in that the thermoplastic adhesive includes such as
The component of lower parts by weight：20 ~ 30 parts of PE powder, 70 ~ 80 parts of acrylic acid esters co-polymer, 5 ~ 10 parts of polysiloxane, peroxide
Change 1 ~ 3 part of diisopropylbenzene (DIPB), 5 ~ 10 parts of acetone, 10 ~ 20 parts of aerosil, 3 ~ 5 parts of stannous chloride.
5. the construction technology of soft soil foundation according to claim 4, it is characterised in that the acrylic acid esters co-polymer
Preparation method is as follows：By hydroxyethyl methacrylate, maleic anhydride, Octylphenol polyoxyethylene ether, lauryl sodium sulfate, water
It is added in emulsifier with potassium peroxydisulfate, opens stirring and emulsified, then heat to 70 ~ 80 DEG C, room is down to after reacting 3 ~ 4h
Temperature adjusts pH value to neutrality.
6. the construction technology of soft soil foundation according to claim 1, it is characterised in that the rubble screed is using broken
Rubble is crushed to 10cm hereinafter, and mixed ratio is mixed for 40 ~ 45% mortar into broken rubble by broken machine.
7. the construction technology of soft soil foundation according to claim 6, it is characterised in that：The mortar is by bentonite, glues
Soil, wollastonite powder, cement and polyurethane adhesive are mixed.
8. the construction technology of soft soil foundation according to claim 1, it is characterised in that the silicate cement mud layer includes such as
The component of lower parts by weight：60 ~ 70 parts of Portland cement, 10 ~ 20 parts of flyash, 5 ~ 10 parts of sepiolite, natural zeolite
10 ~ 20 parts, 10 ~ 20 parts of clay, 5 ~ 10 parts of carbon dust, 1 ~ 5 part of three b propanol amine, 5 ~ 10 parts of niter cake, 40 ~ 80 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079944.6A CN108425357B (en) | 2017-02-14 | 2017-02-14 | Construction process of soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079944.6A CN108425357B (en) | 2017-02-14 | 2017-02-14 | Construction process of soft soil foundation |
Publications (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111364305A (en) * | 2020-03-18 | 2020-07-03 | 广州众粤市政园林设计工程有限公司 | Municipal road soft soil foundation treatment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10251559A (en) * | 1997-03-07 | 1998-09-22 | Bridgestone Corp | Water-based antifouling agent |
| CN105951872A (en) * | 2016-05-27 | 2016-09-21 | 无锡市政设计研究院有限公司 | Drainage pipeline foundation in soft soil foundation and construction method of drainage pipeline foundation |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10251559A (en) * | 1997-03-07 | 1998-09-22 | Bridgestone Corp | Water-based antifouling agent |
| CN105951872A (en) * | 2016-05-27 | 2016-09-21 | 无锡市政设计研究院有限公司 | Drainage pipeline foundation in soft soil foundation and construction method of drainage pipeline foundation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364305A (en) * | 2020-03-18 | 2020-07-03 | 广州众粤市政园林设计工程有限公司 | Municipal road soft soil foundation treatment method |
| CN111364305B (en) * | 2020-03-18 | 2022-02-01 | 广州众粤市政园林设计工程有限公司 | Municipal road soft soil foundation treatment method |
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| CN108425357B (en) | 2020-05-12 |
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