CN110080203A - The repeatable processing method and its processing structure adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement - Google Patents
The repeatable processing method and its processing structure adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement Download PDFInfo
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- CN110080203A CN110080203A CN201910233150.XA CN201910233150A CN110080203A CN 110080203 A CN110080203 A CN 110080203A CN 201910233150 A CN201910233150 A CN 201910233150A CN 110080203 A CN110080203 A CN 110080203A
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- 238000003672 processing method Methods 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 title claims abstract description 20
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 238000007569 slipcasting Methods 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims abstract description 44
- 238000010276 construction Methods 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000000284 extract Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 38
- 239000002002 slurry Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011398 Portland cement Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 31
- 230000008569 process Effects 0.000 abstract description 18
- 230000007812 deficiency Effects 0.000 abstract description 5
- 238000009411 base construction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000011257 shell material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
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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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
- E02D2300/004—Bentonite or bentonite-like
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to traffic base construction technique fields, the specific repeatable processing method and its processing structure adjusted of open deep soft soil foundation pile foundation track girder two sides differential settlement, processing method comprise the concrete steps that: (1) installation is continuously arranged in the transition plates of track girder two sides；(2) injected hole is reserved；(3) Grouting Pipe is made；(4) Grouting Pipe is buried；(5) slip casting core pipe is put into pre-buried Grouting Pipe to tube bottom；(6) cement injection is carried out inwardly on the outside of track girder；(7) settlement observation is carried out, while carrying out pressure maintaining；(8) after the completion of slip casting, settlement after construction observation is carried out；(9) borehole cleaning extracts slip casting core pipe；(10) restore pavement surface structure appearance.The processing method can effectively solve deficiency present in traditional " bump at bridgehead " issue handling, this method not only operates relative simplicity program, and implementation process cost is less, and treatment effeciency greatly improves, reduce construction risk in treatment process simultaneously, reduces O&M cost.
Description
Technical field
The invention belongs to traffic base construction technique fields, and in particular to deep soft soil foundation pile foundation track girder two sides are different
Occurs the processing method of relative settlement between rigidity.
Background technique
Relative settlement is generated, such as asking for bump at bridgehead since the rigidity of different grounds is different in previous pile foundation two sides
Topic, bump at bridgehead is a kind of subgrade defect problem relatively conventional in highway construction, and prevention bump at bridgehead problem is one long-term
And large order, it needs to include that construction, design and the joint efforts of each side, unit in charge of construction are completed.Crucial disease is road traffic peace
One of complete important hidden danger seriously affects the comfort of driving, reduces the travel speed and road passage capability of vehicle, and damage is high
The Social benefit and economic benefit of fast highway construction.
In order to ensure bridge and harmony of align ment and smoothly it is necessary to reinforce the design of bridge and bridge platform back roadbed, construction and
Maintenance, the phenomenon that solve bump at bridgehead.
Currently, its common solution has: exchange filling method, treatment process of composite foundation, TGXG (net) reinforced earth
Treatment Methods, light filler Treatment Methods, injecting treatment method etc..
Above-mentioned traditional processing method has the following disadvantages:
(1) cost is higher, such as uses light filler Treatment Methods, treatment process of composite foundation.
(2) complex process, needs a variety of construction cooperations in scene, and enforcement difficulty is larger.
(3) due to the characteristic of the secondary consolidation of weak soil, creep, the complete settlement after construction duration is longer, after causing basement process
There is relative settlement, and is easy to produce continuous maintenance, the poor circulation that relative settlement constantly generates.The maintenance in later period can continue to compare
Longer time, and will cause with traditional treatment method it is difficult in maintenance, influence operation use the problem of generate, to increase maintenance
Cost, while will increase the security risk in maintenance process.
Therefore, it researches and develops a kind of pair of deep soft soil foundation pile foundation track two sides differential settlement and carries out sustainable adjusting, save punishment
The cost of differential settlement reduces the complexity and degree of difficulty of punishment, reduces the construction risk generated in treatment process, reduces O&M
The processing method of cost is extremely urgent.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, specifically disclose a kind of deep soft soil foundation pile foundation track girder two
The repeatable processing method adjusted of side differential settlement, which can effectively solve deposits in traditional " bump at bridgehead " issue handling
Deficiency, this method not only operates relative simplicity program, and implementation process cost is less, and treatment effeciency greatly improves, and subtracts simultaneously
Lack construction risk in treatment process, reduces O&M cost.
In order to reach above-mentioned technical purpose, the present invention is realized by following technical scheme:
The repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement of the present invention, tool
Steps are as follows for body:
(1) installation is continuously arranged in the transition plates of track girder two sides；
(2) injected hole is reserved: can be in advance in transition plates close to track girder, the both ends far from track girder and corresponding bedding of roadbed
Reserve injected hole in position；
(3) make Grouting Pipe: production has a Grouting Pipe of the first thick liquid discharge mouth and check valve, first thick liquid discharge mouth and unidirectional
Valve and the bottom interval of transition plates are arranged, the gap grout off between the Grouting Pipe and transition plates；
(4) it buries Grouting Pipe: the Grouting Pipe to complete is buried to predetermined position and absolute altitude；
(5) it when pile foundation track girder two sides, which occurs, in field monitoring excessive relative settlement occurs, is put in pre-buried Grouting Pipe
Enter the slip casting core pipe with the second thick liquid discharge mouth and two-way bowl-type rubber valve to tube bottom, and first thick liquid discharge mouth and the second plasma discharge of note
The height and position correspondence of mouth is generally corresponding to；
(6) cement injection is carried out inwardly on the outside of track girder；
(7) during carrying out slip casting, settlement observation is carried out to processing region, while carrying out pressure maintaining；
(8) after the completion of slip casting, the settlement after construction observation for carrying out certain time repeats step (5) if completing less effective
To step (7), the differential settlement until pile foundation track girder two sides is adjusted until meeting live requirement；
(9) and borehole cleaning is carried out, extracts slip casting core pipe.
(10) restore pavement surface structure appearance.
As the further improvement of above-mentioned technology, in above-mentioned steps (1), in newly-built structures, digging up and filling in
It is carried out after sand during pouring track girder, is symmetrically installed the transition plates for being continuously arranged in track girder two sides.
As the further improvement of above-mentioned technology, reserves in injected hole, can be leaned in transition plates in advance in above-mentioned steps (2)
Injected hole is reserved in nearly track girder, the both ends far from track girder and corresponding bedding of roadbed position, and the diameter of the injected hole is 50mm,
Longitudinal pitch is 0.7m~1.5m.
As the further improvement of above-mentioned technology, in the production Grouting Pipe step of above-mentioned steps (3), the Grouting Pipe
Caliber is 48mm, and the check valve is rubber check valve, the bottom of first thick liquid discharge mouth and rubber check valve apart from transition plates
For 500mm, the transition plates apex distance is 2000mm~3000mm from bedding of roadbed bottom.
As the further improvement of above-mentioned technology, cement injection is carried out inwardly on the outside of the slave track girder of step (6)
In, the cement slurry ratio of mud is 0.7~1.0, and the presetting period of slurries is 1.5h, and grouting pressure is 0.6MPa~1.0MPa,
What is selected is marked as 42.5 ordinary portland cements.Slip casting proportion and slip casting standard, need according to scene difference condition,
Loading condition in matter condition and live use process, carries out comprehensive analysis, and tested when conditions permit,
It is final to determine slip casting proportion and slip casting standard.
As the further improvement of above-mentioned technology, in the settlement observation of the processing region of step (7), settlement observation
Standard is 3mm/d or so, if more than this value, then needs to adjust the scheme of slip casting；If be less than this value, illustrate slip casting effect compared with
Well, treated, and absolute altitude reaches the requirement of design, is observed, with the validity of verification processing.
As the further improvement of above-mentioned technology, in step (8), after the completion of slip casting, sink after carrying out 3 days or so works
Drop observation.
Processing method of the present invention further includes the structures that may be equally suitable for built completion, when pile foundation track
When beam two sides occur settling excessive situation, first excessive position pore-forming, opening diameter A110mm, bottom hole depth can be being settled
For 2m or so.Then installation has the Grouting Pipe of the first thick liquid discharge mouth and rubber check valve, and carries out length records, manages above ground level
20cm.Gap between drilling is filled with sleeve shell material, the match ratio of sleeve shell material are as follows: cement: bentonite=0.6~0.8:
1.2.Then step (5) to step (10) are repeated.
The invention also discloses the repeatable processing adjusted of the deep soft soil foundation pile foundation track girder two sides differential settlement
Structure comprising several transition platess for being continuously installed on track girder two sides, in transition plates close to track girder, two far from track girder
End or corresponding bedding of roadbed position are equipped with the injected hole across each transition plates, the inside of the injected hole be successively arranged Grouting Pipe and
Slip casting core pipe, the Grouting Pipe are equipped with the first thick liquid discharge mouth and rubber check valve, first thick liquid discharge mouth and rubber check valve with
The bottom of transition plates is spaced setting, and the gap between the Grouting Pipe and transition plates is to be blocked with cement, the slip casting
Core pipe is equipped with the second thick liquid discharge mouth and two-way bowl-type rubber valve, and the height and position of first thick liquid discharge mouth and the second thick liquid discharge mouth is substantially right
It answers.
Specifically: the diameter of the injected hole is 50mm, and longitudinal pitch is 0.7m~1.5m.
The bottom of the thick liquid discharge mouth and rubber check valve apart from transition plates is 500mm, the distance from top road of the transition plates
The bottom of foundation base is 2000mm~3000mm.
The slip casting core pipe is equipped with the second thick liquid discharge mouth and two-way bowl-type rubber valve, first thick liquid discharge mouth and the second plasma discharge
The height and position of mouth is generally corresponding to.
Compared with prior art, the beneficial effects of the present invention are:
(1) the repeatable processing method adjusted of differential settlement of the present invention is knot on the basis of common abnormal settlement treatment
The settlement observation in implementation process is closed, using repeatable slip casting, to reach estimated treatment effect, treatment effeciency is high；
(2) in the repeatable processing method adjusted of differential settlement of the present invention, used mechanical equipment is common, the technique of use
Simply, implementation cost is very low, and operability is more convenient, and the influence of versus environmental is smaller, and treatment effeciency is high, the duration of implementation
Short, the safe safety of implementation process reduces O&M cost, compensates for the deficiency in conventional treatment, builds item for traffic base
Relative settlement processing occurs in mesh and provides a kind of new processing method, application value with higher；
(3) the repeatable processing structure adjusted of differential settlement of the present invention, is simply easily achieved.
Detailed description of the invention
The present invention is described in detail in the following with reference to the drawings and specific embodiments:
Fig. 1 is the processing structure signal for occurring relative settlement between the different-stiffness of deep soft soil foundation pile foundation track girder two sides
Figure；
Occurs slip casting implementation diagram in the treatment process of relative settlement in Fig. 2 present invention.
Specific embodiment
Embodiment one:
As shown in Figure 1 and Figure 2, deep soft soil foundation pile foundation track girder two sides differential settlement of the present invention is repeatable is adjusted
Processing structure comprising it is several to be continuously installed on the transition platess 2 of 1 two sides of track girder, in transition plates 2 close to track girder 1, separate
The both ends of track girder 1 or 3 position of corresponding bedding of roadbed are equipped with the injected hole 8 across each transition plates 2, the inside of the injected hole 8
It is successively arranged Grouting Pipe 4 and slip casting core pipe 5, the Grouting Pipe 4 is equipped with the first thick liquid discharge mouth 41 and rubber check valve 42, and described the
The bottom of one thick liquid discharge mouth 41 and rubber check valve 42 and transition plates 2 is spaced setting, between the pipe of slip casting 4 and transition plates 2
Gap is to be blocked with cement, and the slip casting core pipe 5 is equipped with the second thick liquid discharge mouth 51 and two-way bowl-type rubber valve 52, the slip casting
Core pipe 5 is equipped with the second thick liquid discharge mouth 51 and two-way bowl-type rubber valve 52, the height of first thick liquid discharge mouth 41 and the second thick liquid discharge mouth 51
Degree position is generally corresponding to.The diameter of the injected hole 8 is 50mm, longitudinal pitch 1.2m, first thick liquid discharge mouth 41 and rubber
Bottom of the check valve 42 apart from transition plates is 500mm, and the bottom of the distance from top bedding of roadbed 3 of the transition plates 2 is 2000mm.
The repeatable processing adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement of the present invention described below
Structure, the specific steps of which are as follows:
(1) installation is continuously arranged in the transition plates 2 of 1 two sides of track girder: in newly-built structures, after digging up and filling in sand 9
It carries out during pouring track girder 1, is symmetrically installed the transition plates 2 for being continuously arranged in 1 two sides of track girder；
(2) injected hole 8 is reserved: can be in advance in transition plates 2 close to track girder 1, the both ends far from track girder 1 and corresponding roadbed
Injected hole 8 is reserved at 3 position A of surface layer, the diameter of the injected hole 8 is 50mm, longitudinal pitch 1.2m.
(3) make Grouting Pipe 4: production has the Grouting Pipe 4 of the first thick liquid discharge mouth 41 and check valve 42, first thick liquid discharge mouth
41 and the bottom interval of check valve 42 and transition plates 2 be arranged, the gap grout off between the Grouting Pipe 4 and transition plates 2；
4 caliber of Grouting Pipe is 48mm, and the check valve 42 is rubber check valve, first thick liquid discharge mouth 41 and rubber check valve 42
Bottom apart from transition plates 2 is 500mm, and 2 apex distance of transition plates is 2000mm from 3 bottom of bedding of roadbed.
(4) it buries Grouting Pipe 4: the Grouting Pipe 4 to complete is buried to predetermined position and absolute altitude；
(5) when 1 two sides of pile foundation track girder, which occurs, in field monitoring excessive relative settlement occurs, in pre-buried Grouting Pipe 4
The slip casting core pipe 5 with the second thick liquid discharge mouth 51 and two-way bowl-type rubber valve 52 is put into tube bottom, the first plasma discharge of the Grouting Pipe 4
Mouth 41 and the height and position of the second thick liquid discharge mouth 51 of slip casting core pipe 5 are generally corresponding to；
(6) carry out cement injection 6 inwardly from 1 outside of track girder: 6 ratio of mud of cement slurry is 0.7~1.0, slurries
Presetting period be 1.5h, grouting pressure is 0.6MPa~1.0MPa, and selection is the note marked as 42.5 ordinary portland cements
Slurry proportion and slip casting standard are needed according to the loading condition in the difference condition at scene, geological conditions and live use process,
Comprehensive analysis is carried out, and is tested when conditions permit, it is final to determine slip casting proportion and slip casting standard；
(7) during carrying out slip casting, settlement observation is carried out to processing region, while carrying out pressure maintaining, the sedimentation of this step
The standard of observation is 3mm/d or so, if more than this value, then needs to adjust the scheme of slip casting；If being less than this value, illustrate that slip casting is imitated
Fruit is preferable, and the requirement for absolute altitude reaches design that treated is observed, with the validity of verification processing；
(8) after the completion of slip casting, the settlement after construction observation of certain time is carried out, if completing less effective, after the completion of slip casting, into
Settlement after construction observation in row 3 days or so, repeats step (5) to step (7), until the differential settlement tune of 1 two sides of pile foundation track girder
It is whole until meeting live requirement；
(9) and borehole cleaning is carried out, extracts slip casting core pipe 5.
(10) restore pavement surface structure appearance.
(11) when the excessive situation of the two sides relative settlement for occurring pile foundation 7 and track girder 1 again, step 5 is repeated to step
Rapid 10.
Processing method of the invention is seen on the basis of common abnormal settlement treatment in conjunction with the sedimentation in implementation process
It surveys, using repeatable slip casting, which can effectively solve deficiency present in traditional " bump at bridgehead " issue handling, should
Method not only operates relative simplicity program, and implementation process cost is less, and treatment effeciency greatly improves, while reducing treatment process
Middle construction risk reduces O&M cost.
Embodiment two:
The processing method of relative settlement of the present invention may be equally suitable for the structures of built completion, when pile foundation rail
When the two sides Dao Liang occur settling excessive situation:
Firstly, settling excessive position pore-forming, opening diameter A110mm, bottom hole depth is 3m；
Then, installation has the Grouting Pipe 4 of the first thick liquid discharge mouth 41 and rubber check valve 42, and carries out length records, Guan Gao
Ground 20cm out；Gap between drilling is filled with sleeve shell material, the match ratio of sleeve shell material are as follows: cement: bentonite=0.6~
0.8:1.2 repeats step 5 to step 10.
It is all that the present invention is not departed to various changes or modifications of the invention the invention is not limited to above embodiment
Spirit and scope, if these modification and variations belong within the scope of claim and equivalent technologies of the invention, then this hair
It is bright to also imply that comprising these modification and variations.
Claims (10)
1. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement, the specific steps of which are as follows:
(1) installation is continuously arranged in the transition plates of track girder two sides；
(2) injected hole is reserved；
(3) make Grouting Pipe: production has a Grouting Pipe of the first thick liquid discharge mouth and check valve, first thick liquid discharge mouth and check valve with
The bottom interval of transition plates is arranged, the gap grout off between the Grouting Pipe and transition plates；
(4) it buries Grouting Pipe: the Grouting Pipe to complete is buried to predetermined position and absolute altitude；
(5) when pile foundation track girder two sides, which occurs, in field monitoring excessive relative settlement occurs, band is put into pre-buried Grouting Pipe
There are the second thick liquid discharge mouth and the slip casting core pipe of two-way rubber valve to tube bottom, and the height position of first thick liquid discharge mouth and the second thick liquid discharge mouth
It sets and is generally corresponding to；
(6) cement injection is carried out inwardly on the outside of track girder；
(7) during carrying out slip casting, settlement observation is carried out to processing region, while carrying out pressure maintaining；
(8) after the completion of slip casting, the settlement after construction observation of certain time is carried out, if completing less effective, repeats step (5) to step
Suddenly (7), the differential settlement until pile foundation track girder two sides adjust until meeting live requirement；
(9) and borehole cleaning is carried out, extracts slip casting core pipe；
(10) restore pavement surface structure appearance.
2. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: in newly-built structures, pour the mistake of track girder after digging up and filling in sand in above-mentioned steps (1)
Cheng Zhong is symmetrically installed the transition plates for being continuously arranged in track girder two sides.
3. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: reserved in injected hole in above-mentioned steps (2), it can be in advance in transition plates close to track girder, two far from track girder
Injected hole is reserved in end and corresponding bedding of roadbed position, and the diameter of the injected hole is 50mm, and longitudinal pitch is 0.7m~1.5m.
4. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: the Grouting Pipe caliber is 48mm in the production Grouting Pipe step of above-mentioned steps (3), the check valve is
Rubber check valve, the bottom of first thick liquid discharge mouth and rubber check valve apart from transition plates are 500mm, the transition plates apex distance
It is 2000mm~3000mm from bedding of roadbed bottom.
5. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: carrying out in cement injection inwardly on the outside of the slave track girder of above-mentioned steps (6), the cement slurry ratio of mud is
0.7~1.0, the presetting period of slurries is 1.5h, and grouting pressure is 0.6MPa~1.0MPa, and selection is common marked as 42.5
Portland cement.
6. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: the standard of settlement observation is 3mm/d or so, in the settlement observation of the processing region of step (7) if more than this
Value, then need to adjust the scheme of slip casting；If being less than this value, illustrate that slip casting effect is preferable.
7. the repeatable processing method adjusted of deep soft soil foundation pile foundation track girder two sides differential settlement according to claim 1,
It is characterized by: after the completion of slip casting, carrying out settlement after construction observation in 3 days or so in step (8).
It is adjusted 8. deep soft soil foundation pile foundation track girder two sides differential settlement according to any one of claims 1 to 7 is repeatable
Processing structure, it is characterised in that: continuously the transition platess of track girder two sides are installed on including several, in transition plates close to track
Beam, far from track girder both ends or corresponding bedding of roadbed position be equipped with across each transition plates injected hole, the injected hole it is interior
Portion is successively arranged Grouting Pipe and slip casting core pipe, and the Grouting Pipe is equipped with the first thick liquid discharge mouth and rubber check valve, the first row
The bottom of slurry mouth and rubber check valve and transition plates is spaced setting, the gap cement between the Grouting Pipe and transition plates into
Row blocks, and the slip casting core pipe is equipped with the second thick liquid discharge mouth and two-way bowl-type rubber valve, first thick liquid discharge mouth and the second thick liquid discharge mouth
Height and position be generally corresponding to.
9. the repeatable processing structure adjusted of thick-soft base pile foundation track girder two sides differential settlement according to claim 8,
It is characterized by: the diameter of the injected hole is 50mm, longitudinal pitch is 0.7m~1.5m.
10. the repeatable processing structure adjusted of thick-soft base pile foundation track girder two sides differential settlement according to claim 9,
It is characterized by: the bottom of first thick liquid discharge mouth and rubber check valve apart from transition plates is about 500mm, the top of the transition plates
Bottom of the portion apart from bedding of roadbed is about 2000mm~3000mm.
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| CN201910233150.XA CN110080203B (en) | 2019-03-26 | 2019-03-26 | Treatment method and treatment structure for repeatedly adjusting settlement differences at two sides of pile foundation track beam of deep soft soil foundation |
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| CN209975499U (en) * | 2019-03-26 | 2020-01-21 | 中交四航工程研究院有限公司 | Processing structure capable of repeatedly adjusting settlement difference on two sides of pile foundation track beam of deep soft soil foundation |
-
2019
- 2019-03-26 CN CN201910233150.XA patent/CN110080203B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0953237A (en) * | 1995-08-11 | 1997-02-25 | Mitsui Home Co Ltd | Pit and constructing method of basement utilizing the pit |
| CN102926303A (en) * | 2012-11-22 | 2013-02-13 | 河海大学 | Method for reinforcing soft soil foundation settlement control pile foundation bracket of high-grade highway in use |
| CN106759223A (en) * | 2015-11-19 | 2017-05-31 | 五邑大学 | Controllable rigid pile+displacement hull+reinforcement cushion combined composite foundation |
| CN107513995A (en) * | 2017-08-07 | 2017-12-26 | 中国水利水电第十工程局有限公司 | A kind of bridge struction pile post grouting construction method |
| CN209975499U (en) * | 2019-03-26 | 2020-01-21 | 中交四航工程研究院有限公司 | Processing structure capable of repeatedly adjusting settlement difference on two sides of pile foundation track beam of deep soft soil foundation |
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