CN109914240A - A construction method for treating bridge head jumping by grouting polyurethane polymer under the condition of opening to traffic - Google Patents
A construction method for treating bridge head jumping by grouting polyurethane polymer under the condition of opening to traffic Download PDFInfo
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- CN109914240A CN109914240A CN201910165860.3A CN201910165860A CN109914240A CN 109914240 A CN109914240 A CN 109914240A CN 201910165860 A CN201910165860 A CN 201910165860A CN 109914240 A CN109914240 A CN 109914240A
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 67
- 239000004814 polyurethane Substances 0.000 title claims abstract description 67
- 229920000642 polymer Polymers 0.000 title claims abstract description 43
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 230000009191 jumping Effects 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005553 drilling Methods 0.000 claims abstract description 25
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000036541 health Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 210000004911 serous fluid Anatomy 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000007569 slipcasting Methods 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 21
- 239000004568 cement Substances 0.000 claims description 16
- 239000002689 soil Substances 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 244000025254 Cannabis sativa Species 0.000 claims description 6
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000010754 BS 2869 Class F Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 3
- 238000009533 lab test Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 210000002966 serum Anatomy 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000740 bleeding effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 10
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Polyurethane high polymer grouting punishes bumping at bridge-head construction method under a kind of train-passing through conditions, the following steps are included: polyurethane high polymer grouting after (1) highway abutment, based on Technological Economy principle, with polyurethane: flyash: water=1:2:3 mass ratio prepares grouting serous fluid；(2) cross drilling Grouting bumping at bridge-head construction method, process are as follows under train-passing through conditions: 2.1) grouting serous fluid is prepared；2.2) roadbed side slope transverse direction twist bit drills；2.3) polyurethane high polymer grouting；2.4) sealing of hole health；2.5) side slope is poured；2.6) earth-covering greening.Easy construction of the present invention, punishment works well and remarkable benefit.
Description
Technical field
The invention belongs in geotechnical engineering the control technique of settlement after construction technical field more particularly to a kind of train-passing through conditions under poly- ammonia
Ester high polymer grouting punishes bumping at bridge-head construction method.
Background technique
Currently, the traffic infrastructures such as China's highway and high-speed railway are built mostly in " Yangtze River Delta ", " Pearl River Delta "
With the developed coastal provinces part such as Bohai Economic Rim, these widely distributed water content in area are high, compressibility are big, poor permeability and intensity
Low Deep Thick Soft Ground.After runing the several years, often there is " bumping at bridge-head " disease because post-construction settlement of subgrade is excessive in these facilities, sternly
It threatens traffic safety again and reduces road-ability.
Currently, common " bumping at bridge-head " handle measure includes that road surface overlays, excavates lightweight displacement and vertical bored grouting
Deng.Number of patent application 201110302492.6 discloses " a kind of existing vehicle jumping at bridge head of highway processing method ".The patent is logical
Side slope of embankment cross drilling slip casting is crossed, using light material displacement embankment filled soil, to mitigate embankment self weight, reaches reduction highway
Post-construction settlement of subgrade purpose.This patent is only capable of reducing roadbed subsequent sedimentation, it is difficult to restore the original absolute altitude of roadbed.And patent application
Numbers 200910066336.7 disclose " Prevention of Bump at End of Bridge high polymer grouting technology and its construction method ".The patent is to bridge
The head attachment strap or vertical bored grouting in sleeper beam bottom, is expanded rapidly and cured inherent characteristic using polyurethane, Fast Filling comes to nothing,
Lifting attachment strap is simultaneously reinforcing road bed, can effectively prevent Bridgehead-Jumping Disease.This patent at brow plate emptying only to not punished, and not
Consider that Roadbed Soil settles the influence to bumping at bridge-head；And man-hour requirement traffic control is applied, influence road normal operation.
Summary of the invention
In order to overcome the shortcomings of traditional technology or above-mentioned patent, it is high that the present invention provides polyurethane under a kind of train-passing through conditions
Polymers Grouting bumping at bridge-head construction method, be suitable for highway/urban roads at different levels/(high speed) railway bridge, culvert and
The punishment construction of retaining wall behind rigid-flexibility transition section differential settlement；Integrated " a kind of existing vehicle jumping at bridge head of highway processing method "
The technological merit of " Prevention of Bump at End of Bridge high polymer grouting technology and its construction method " two patents, using side slope of embankment
Cross drilling slurry injection technique is replaced characteristic using the rapid expanding of polyurethane high polymer, solidification and lightweight, is realized " bumping at bridge-head "
It is new to form " polyurethane high polymer grouting punishes bumping at bridge-head under train-passing through conditions " new technology for " lifting resets " of section subgrade and pavement
Technique, can be further to solve the problems, such as that road-bridge transition section subgrade and pavement disease provides advantage.
The technical solution adopted by the present invention to solve the technical problems is:
Polyurethane high polymer grouting punishes bumping at bridge-head construction method under a kind of train-passing through conditions, comprising the following steps:
(1) polyurethane high polymer grouting after highway abutment
Based on Technological Economy principle, with polyurethane: flyash: water=1:2:3 mass ratio prepares grouting serous fluid.
Raw material selection is as follows:
Water: pH value is greater than or equal to 6 drinkable water；
Polyurethane high polymer: water dispersible polyurethane, aqueous polyurethane or water-based polyurethane are used, i.e., is replaced with water organic molten
New polyurethane system of the agent as decentralized medium；
Flyash: the wet row's low-sulfur Class F fly ash of thermal power plant is used；
Under highway train-passing through conditions, roadbed side slope place is made full use of, is constructed using lateral pilot hole slurry injection technique；
1.1) total grouting amount: grouting amount is related with the volume V of subgrade soils, porosity n and empirical coefficient k value, single hole slip casting
Measure Q=knV, projected area and lateral pilot hole slip casting depth of the volume of subgrade soils by stabilization zone under roadbed center line on vertical section
Degree determines that porosity n is measured by laboratory test, and experience k value range is 0.6~1.0, is often converted into grouting amount in construction
Cement amount W, W (T) ≈ Q (m3)/1.35(T/m3)；
1.2) it drill hole density: according to " bumping at bridge-head " section relative settlement regularity of distribution, designs between section drilling lays
Away from/density, calculation expression are as follows: n=2 Δ s/ [(μ1/2-1)R0], wherein Δ s is the differential settlement of certain section, R0To open
Bore dia, μ are the polyurethane high polymer coefficient of expansion, and n is certain section cloth hole density, according to grouting material coefficient of expansion variation water
Flat, differential settlement is controlled within 1.0cm after can resetting lifting；
(2) cross drilling Grouting bumping at bridge-head construction method, process are as follows under train-passing through conditions:
2.1) grouting serous fluid is prepared
According to above-mentioned mixture proportions recommended, the dosage of polyurethane, flyash and water is accurately calculated；With every each 0.3m3
For unit, in mass ratio weighing raw material；Polyurethane and flyash are added to the water, stirring 5min or so keeps raw material complete
It dissolves and is sufficiently spread in water, form uniform and stable rubber cement；
Rubber cement consistency is controlled in 18~24s, and to meet pressure grouting requirement, the control of rubber cement bleeding rate is secreted 2% after stirring
Out moisture Ying Yu for 24 hours in is all absorbed by rubber cement, setting time control in 10~30min, it is desirable that slurries in process of setting not
It shrinks, early strength reaches 1.2MPa or more；
2.2) roadbed side slope transverse direction twist bit drills；
2.3) polyurethane high polymer grouting
Mix and stir polyurethane and flyash mixed serum at the scene using mortar mixer；
It in mortar mixer bottom opening, is successively connect, is formed poly- with Grouting Pipe outer end in booster pump and hole by hose
Urethane high polymer grouting transfer passage；
After drilling machine is crept into projected depth, booster pump slip casting is opened, marginal not starches the slow withdrawing Grouting Pipe in side, makes Grouting Pipe
Mouth is always below slurries liquid level.When aperture is counter starch when pressurize in time, disposably fill entire drilling, finally, extract slip casting
Pipe completes slip casting.During slip casting, grouting pressure is maintained at 0.6~1.0MPa range；
After one hole fills polyurethane high polymer slurries, telephone-moving to next hole location is constructed, until " bumping at bridge-head " section is entire
Roadbed side slope slope surface completes drilling, slip casting；
2.4) sealing of hole health
After polyurethane high polymer slurries are injected in drilling, there is cracking phenomena to prevent from rapidly drying, aperture is covered
Gunnysack or plastic film carry out sealing of hole health；
2.5) side slope is poured
After to the drilling of all hole locations, slip casting and health, slope surface is sprayed with polyurethane high polymer dilution slurries, with solidifying
Knot, solidification and the stable side slope soil body；
2.6) earth-covering greening
It is required according to soil, weather and landscape, chooses grass seeds or shrub, implement slope greening work, comprising: slope surface paving
If non-woven geotextile, filling 50mm thickness loam and grass fill miscegenation slope greening.
Further, in the step 2.3), in the construction process, jump hole mode is taken to widen into pitch of holes, to reduce phase
The interference of adjacent hole interdigit.
Basic principle of the invention includes:
In " bumping at bridge-head " section, using lateral pilot hole technology to roadbed side slope filling polyurethane high polymer slurries, sufficiently
It plays polyurethane expand rapidly, solidify and the effect of lightweight displacement, realizes that " bumping at bridge-head " section quickly " lifting reset ", " is lifted
Rise and reset " afterwards differential settlement be controlled within 1.0cm, while greatly reduce the self weight of existing roadbed and the compression of subsequent roadbed with
Ground consolidation settling amount, to achieve the purpose that eliminate " bumping at bridge-head " disease.
The beneficial effect comprise that 1, easy construction: utilizing roadbed side slope field construction, be not necessarily to traffic pipe in construction
System has ensured being open to traffic and runing for highway.Construction technology is simple, and operability is stronger；Requirement to construction machinery is lower, construction
Fast, high-efficient and short time limit.2, punishment works well: polyurethane high polymer has expansion rapidly, solidification, is self-possessed the small and later period
The characteristics such as intensity height can make quick " lifting resets " of jumping bus or train route section, and change the effect of filling out by lightweight and mitigate roadbed self weight significantly,
To realize the purpose repaired vehicle bump and reduce subsequent sedimentation.3, it remarkable benefit: is changed with excavation and fills out EPS, vertical densification note
The conventional schemes such as slurry and cement mixing pile compare, and can greatly reduce nature construction material dosage, also flyash equal industrial residue can be used to make
Filler material realizes the regeneration of waste.
Detailed description of the invention
Fig. 1 is " polyurethane high polymer grouting hole location artwork after abutment " of the invention；Wherein, (1)-bridge floor, (2)-abutment,
(3) posterior surface, (7)-injected hole, (8)-go back to are repaired in-ground, (4)-bumping at bridge-head section, (5)-depression posterior surface, (6)-
Fill out region roadbed, (9)-general section roadbed.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig.1, polyurethane high polymer grouting punishes bumping at bridge-head construction method, including highway bridge under a kind of train-passing through conditions
Polyurethane high polymer grouting technology and cross drilling Grouting bumping at bridge-head construction method under train-passing through conditions after platform, including it is following
Step:
(1) polyurethane high polymer grouting technology after highway abutment
Based on Technological Economy principle, with polyurethane: flyash: water=1:2:3 mass ratio prepares grouting serous fluid, raw material
It selects as follows:
Water: pH value is greater than or equal to 6 drinkable water.
Polyurethane high polymer: water dispersible polyurethane, aqueous polyurethane or water-based polyurethane are used, i.e., is replaced with water organic molten
New polyurethane system of the agent as decentralized medium.
Flyash: using the wet row's low-sulfur Class F fly ash of thermal power plant, and fundamental property requires such as table 1.
Table 1
Under (high speed) highway train-passing through conditions, roadbed side slope place is made full use of, is constructed using lateral pilot hole slurry injection technique.
1.1) total grouting amount: grouting amount is related with the volume V of subgrade soils, porosity n and empirical coefficient k value.Single hole slip casting
Measure Q=knV.Projected area and lateral pilot hole slip casting depth of the volume of subgrade soils by stabilization zone under roadbed center line on vertical section
Degree determines that porosity n is measured by laboratory test, and experience k value range is 0.6~1.0 (foundation bearing capacity more high-k is bigger).
For convenience of metering, grouting amount is often converted into cement amount W, W (T) ≈ Q (m in construction3)/1.35(T/m3)。
1.2) drill hole density: as shown in Figure 1, according to " bumping at bridge-head " section relative settlement regularity of distribution, the section is designed
Spacing/density, calculation expression are as follows: n=2 Δ s/ [(μ are laid in drilling1/2-1)R0], wherein Δ s is that the difference of certain section is heavy
Drop amount, R0For opening diameter, μ is the polyurethane coefficient of expansion, and n is certain section cloth hole density (or quantity).It is swollen according to grouting material
Swollen coefficient Deflection level, differential settlement is controlled within 1.0cm after can resetting lifting.
(2) cross drilling Grouting bumping at bridge-head construction method under train-passing through conditions
Construction technology process include preparation of construction, surveying and locating, grouting serous fluid preparation, the auger boring of roadbed side slope transverse direction,
Polyurethane high polymer grouting, sealing of hole health, side slope pours and earth-covering greening.Before construction, site clearing and surveying and locating are carried out
And the preparations such as technology, material, equipment and staffing.Steps are as follows in construction:
2.1) grouting serous fluid is prepared
According to above-mentioned mixture proportions recommended, the dosage of polyurethane, flyash and water is accurately calculated；With every each 0.3m3
For unit, in mass ratio weighing raw material (polyurethane and flyash)；Polyurethane and flyash are added to the water, stirring 5min is left
The right side makes raw material be completely dissolved and sufficiently be spread in water, forms uniform and stable rubber cement.
Rubber cement consistency is controlled in 18~24s (measurement of slip consistency instrument), to meet pressure grouting requirement.Rubber cement is secreted after stirring
Water rate is controlled 2% or so, is secreted moisture Ying Yu out and is all absorbed by rubber cement in for 24 hours.Setting time controls in 10~30min.It wants
Slurries are asked not shrink in process of setting, early strength (for 24 hours) reaches 1.2MPa or more.
2.2) roadbed side slope transverse direction twist bit drill construction technique is referring to a kind of " existing vehicle jumping at bridge head of highway processing
Method " (number of patent application 201110302492.6) executes.
2.3) polyurethane high polymer grouting
Mix and stir polyurethane and flyash mixed serum at the scene using mortar mixer.
It in mortar mixer bottom opening, is successively connect, is formed poly- with Grouting Pipe outer end in booster pump and hole by hose
Urethane high polymer grouting transfer passage.
After drilling machine is crept into projected depth, booster pump slip casting is opened, marginal not starches the slow withdrawing Grouting Pipe in side, makes Grouting Pipe
Mouth is always below slurries liquid level.When aperture is counter starch when pressurize in time, disposably fill entire drilling.Finally, extracting slip casting
Pipe completes slip casting.During slip casting, grouting pressure is maintained at 0.6~1.0MPa range.
After one hole fills polyurethane high polymer slurries, telephone-moving to next hole location is constructed, until " bumping at bridge-head " section is entire
Roadbed side slope slope surface completes drilling, slip casting.
In the construction process, jump hole mode can be taken to widen into pitch of holes, to reduce the interference of adjacent holes interdigit.
2.4) sealing of hole health
After polyurethane high polymer slurries are injected in drilling, there is cracking phenomena to prevent from rapidly drying, aperture is covered
Gunnysack or plastic film carry out sealing of hole health.
2.5) side slope is poured
After to the drilling of all hole locations, slip casting and health, slope surface is sprayed with polyurethane high polymer dilution slurries, with solidifying
Knot, solidification and the stable side slope soil body.
2.6) earth-covering greening
It is required according to soil, weather and landscape, chooses grass seeds or shrub, implement slope greening work as early as possible, comprising: slope
Face is laid with non-woven geotextile, and filling about 50mm thickness loam and grass fill the conventional constructions links such as miscegenation slope greening.
Claims (2)
1. polyurethane high polymer grouting punishes bumping at bridge-head construction method under a kind of train-passing through conditions, which is characterized in that the method
The following steps are included:
(1) polyurethane high polymer grouting after highway abutment
Based on Technological Economy principle, with polyurethane: flyash: water=1:2:3 mass ratio prepares grouting serous fluid；
Raw material selection is as follows:
Water: pH value is greater than or equal to 6 drinkable water；
Polyurethane high polymer: water dispersible polyurethane, aqueous polyurethane or water-based polyurethane are used, i.e., is made with water instead of organic solvent
For the new polyurethane system of decentralized medium；
Flyash: the wet row's low-sulfur Class F fly ash of thermal power plant is used；
Under highway train-passing through conditions, roadbed side slope place is made full use of, is constructed using lateral pilot hole slurry injection technique；
1.1) total grouting amount: grouting amount is related with the volume V of subgrade soils, porosity n and empirical coefficient k value, single hole grouting amount Q=
KnV, the volumes of subgrade soils are true by projected area of the stabilization zone under roadbed center line on vertical section and lateral pilot hole slip casting depth
Fixed, porosity n is measured by laboratory test, and experience k value range is 0.6~1.0, and grouting amount is often converted into cement in construction
Measure W, W (T) ≈ Q (m3)/1.35(T/m3)；
1.2) it drill hole density: according to " bumping at bridge-head " section relative settlement regularity of distribution, designs section drilling and lays spacing/close
Degree, calculation expression are as follows: n=2 Δ s/ [(μ1/2-1)R0], wherein Δ s is the differential settlement of certain section, R0It is straight for aperture
Diameter, μ are the polyurethane high polymer coefficient of expansion, and n is that certain section cloth hole density can according to grouting material coefficient of expansion Deflection level
Differential settlement is controlled within 1.0cm after lifting is resetted；
(2) cross drilling Grouting bumping at bridge-head construction method, process are as follows under train-passing through conditions:
2.1) grouting serous fluid is prepared
According to above-mentioned mixture proportions recommended, the dosage of polyurethane, flyash and water is accurately calculated；With every each 0.3m3For list
Position, in mass ratio weighing raw material；Polyurethane and flyash are added to the water, stirring 5min or so is completely dissolved raw material
And be sufficiently spread in water, form uniform and stable rubber cement；
Rubber cement consistency is controlled in 18~24s, and to meet pressure grouting requirement, the control of rubber cement bleeding rate secretes water outlet 2% after stirring
Ying Yu is divided all to be absorbed by rubber cement in for 24 hours, setting time controls in 10~30min, it is desirable that slurries are not shunk in process of setting,
Early strength reaches 1.2MPa or more；
2.2) roadbed side slope transverse direction twist bit drills；
2.3) polyurethane high polymer grouting
Mix and stir polyurethane and flyash mixed serum at the scene using mortar mixer；
It in mortar mixer bottom opening, is successively connect with Grouting Pipe outer end in booster pump and hole by hose, forms polyurethane
High polymer grouting transfer passage；
After drilling machine is crept into projected depth, booster pump slip casting is opened, marginal not starches the slow withdrawing Grouting Pipe in side, and slip casting nozzle is made to begin
Eventually be in slurries liquid level hereinafter, when aperture is counter starch when pressurize in time, disposably fill entire drilling, finally, extract Grouting Pipe it is complete
At slip casting, during slip casting, grouting pressure is maintained at 0.6~1.0MPa range；After one hole fills polyurethane high polymer slurries,
Telephone-moving to next hole location is constructed, and until " bumping at bridge-head " section, entire roadbed side slope slope surface completes drilling, slip casting；
2.4) sealing of hole health
After polyurethane high polymer slurries are injected in drilling, there is cracking phenomena to prevent from rapidly drying, gunnysack is covered to aperture
Or plastic film carries out sealing of hole health；
2.5) side slope is poured
After to the drilling of all hole locations, slip casting and health, slope surface is sprayed with polyurethane high polymer dilution slurries, to condense, admittedly
Change and the stable side slope soil body；
2.6) earth-covering greening
It is required according to soil, weather and landscape, chooses grass seeds or shrub, implement slope greening work, comprising: slope surface is laid with nothing
Geotextiles are spun, filling 50mm thickness loam and grass fill miscegenation slope greening.
2. polyurethane high polymer grouting punishes bumping at bridge-head construction method under a kind of train-passing through conditions as described in claim 1,
It is characterized in that, in the step 2.3), in the construction process, takes jump hole mode to widen into pitch of holes, to reduce adjacent hole location
Between interference.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910165860.3A CN109914240B (en) | 2019-03-06 | 2019-03-06 | Construction method for treating bump at bridge head by polyurethane high polymer grouting under traffic conditions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910165860.3A CN109914240B (en) | 2019-03-06 | 2019-03-06 | Construction method for treating bump at bridge head by polyurethane high polymer grouting under traffic conditions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391889A (en) * | 2020-11-10 | 2021-02-23 | 桂林理工大学 | Construction device and method for managing vehicle bump at bridge head |
| CN113235340A (en) * | 2021-04-09 | 2021-08-10 | 浙江工业大学 | Method for treating bump at bridge head by expanding and jacking transverse lead hole |
| CN113737624A (en) * | 2021-09-13 | 2021-12-03 | 天津大学 | Bridge head bump bag type grouting repair construction method |
| CN114508015A (en) * | 2022-03-08 | 2022-05-17 | 河南城建学院 | A kind of bridge head jumping vehicle pavement enhancement repair method |
| CN115717385A (en) * | 2022-12-13 | 2023-02-28 | 中山大学 | A high polymer grouting method and system for airport pavement uplift and roadbed reinforcement |
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| CN115717385A (en) * | 2022-12-13 | 2023-02-28 | 中山大学 | A high polymer grouting method and system for airport pavement uplift and roadbed reinforcement |
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