CN110080203B - Treatment method and treatment structure for repeatedly adjusting settlement differences at two sides of pile foundation track beam of deep soft soil foundation - Google Patents
Treatment method and treatment structure for repeatedly adjusting settlement differences at two sides of pile foundation track beam of deep soft soil foundation Download PDFInfo
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- CN110080203B CN110080203B CN201910233150.XA CN201910233150A CN110080203B CN 110080203 B CN110080203 B CN 110080203B CN 201910233150 A CN201910233150 A CN 201910233150A CN 110080203 B CN110080203 B CN 110080203B
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000002689 soil Substances 0.000 title claims abstract description 21
- 230000007704 transition Effects 0.000 claims abstract description 42
- 238000004062 sedimentation Methods 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000002344 surface layer Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 239000003469 silicate cement Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 5
- 238000003672 processing method Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000002159 abnormal effect Effects 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
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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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- 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 the technical field of traffic infrastructure, and particularly discloses a treatment method and a treatment structure for repeatedly adjusting settlement differences at two sides of a pile foundation track beam of a deep soft soil foundation, wherein the treatment method comprises the following specific steps of: (1) installing transition plates continuously arranged on two sides of the track beam; (2) reserving grouting holes; (3) manufacturing a grouting pipe; (4) burying a grouting pipe; (5) Placing a grouting core pipe into the pre-buried grouting pipe to the bottom of the pipe; (6) injecting cement paste from the outer side to the inner side of the track beam; (7) carrying out sedimentation observation and simultaneously carrying out pressure maintaining; (8) after grouting is completed, carrying out post-construction sedimentation observation; (9) clearing holes and pulling out the grouting core pipe; (10) restoring the structural appearance of the pavement surface. The processing method can effectively solve the defects in the traditional bridge abutment vehicle jump problem processing, the method not only relatively simplifies the operation process, has low implementation process cost, greatly improves the processing efficiency, but also reduces the construction risk in the processing process and reduces the operation and maintenance cost.
Description
Technical Field
The invention belongs to the technical field of traffic infrastructure, and particularly relates to a method for treating differential settlement between different rigidities on two sides of a pile foundation track beam of a deep soft soil foundation.
Background
In the past pile foundation both sides, because the rigidity of different foundations is different, produces the differential subsidence, like the problem of abutment jump car, abutment jump car is the comparatively common road bed disease problem in the highway construction, and the prevention abutment jump car problem is a long-term and difficult work, needs to include construction, design and the common effort of construction unit each side to accomplish. The key diseases are one of the important hidden dangers of road traffic safety, seriously affect the travelling comfort, reduce the travelling speed and the road traffic capacity of vehicles, and damage the social benefit and the economic benefit of expressway construction.
In order to ensure coordination and smoothness of the bridge and the route, the design, construction and maintenance of the bridge and the bridge abutment back roadbed are reinforced so as to solve the phenomenon of abutment jumping.
At present, the common solutions are: a replacement and filling method, a composite foundation treatment method, a geogrid (net) reinforced soil treatment method, a light filler treatment method, a grouting treatment method and the like.
The conventional treatment method has the following defects:
(1) The cost is high, such as using light filler treatment method and composite foundation treatment method.
(2) The process is complex, multiple construction cooperation on site is needed, and the implementation difficulty is high.
(3) Due to the characteristics of secondary consolidation and creep deformation of soft soil, the sedimentation duration is longer after completion, so that differential sedimentation occurs after foundation treatment, continuous maintenance is easy to generate, and poor circulation is generated continuously by differential sedimentation. Later maintenance can last for a longer time, and the traditional processing method can cause maintenance difficulty and influence the problem of operation and use, thereby increasing maintenance cost and increasing safety risk in the maintenance process.
Therefore, the development of a treatment method for continuously adjusting the sedimentation difference at two sides of the pile foundation track of the deep soft soil foundation, which can save the cost for treating the sedimentation difference, reduce the complexity and difficulty of treatment, reduce the construction risk generated in the treatment process and reduce the operation and maintenance cost is urgent.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and particularly discloses a treatment method capable of repeatedly adjusting sedimentation differences at two sides of a pile foundation track beam of a deep soft soil foundation.
In order to achieve the technical purpose, the invention is realized according to the following technical scheme:
the invention relates to a treatment method capable of repeatedly adjusting sedimentation differences at two sides of a pile foundation track beam of a deep soft soil foundation, which comprises the following specific steps:
(1) Installing transition plates continuously arranged on two sides of the track beam;
(2) Reserving grouting holes: grouting holes can be reserved in advance at the positions of the transition plate, which are close to the track beam, the two ends far away from the track beam and the corresponding roadbed surface layers;
(3) And (3) manufacturing a grouting pipe: manufacturing a grouting pipe with a first grouting port and a one-way valve, wherein the first grouting port and the one-way valve are arranged at intervals with the bottom of a transition plate, and a gap between the grouting pipe and the transition plate is plugged by cement;
(4) Burying a grouting pipe: burying the manufactured grouting pipe to a preset position and elevation;
(5) When excessive differential settlement occurs on two sides of a pile foundation track beam in field monitoring, placing a grouting core pipe with a second grouting port and a two-way bowl-shaped rubber valve into a pre-buried grouting pipe to the bottom of the pipe, wherein the first grouting port corresponds to the second grouting port in height position;
(6) Grouting cement paste from the outer side to the inner side of the track beam;
(7) In the grouting process, carrying out sedimentation observation on a treatment area and simultaneously carrying out pressure maintaining;
(8) After grouting is completed, carrying out post-construction settlement observation for a certain time, and if the completion effect is poor, repeating the steps (5) to (7) until the settlement difference at two sides of the pile foundation track beam is adjusted to meet the field use requirement;
(9) And cleaning the holes and pulling out the grouting core tube.
(10) Restoring the structural appearance of the pavement surface layer.
As a further improvement of the above technique, in the step (1), when the track beam is poured after the backfill sand is excavated in the newly built structure, the transition plates continuously arranged at both sides of the track beam are symmetrically installed.
As a further improvement of the technology, in the step (2), grouting holes can be reserved in advance at the positions of the two ends of the transition plate, which are close to the track beam and far from the track beam, and the corresponding roadbed surface layers, wherein the diameter of each grouting hole is 50mm, and the longitudinal spacing is 0.7 m-1.5 m.
As a further improvement of the technology, in the step of manufacturing the grouting pipe in the step (3), the pipe diameter of the grouting pipe is 48mm, the one-way valve is a rubber one-way valve, the distance between the first slurry discharging port and the rubber one-way valve is 500mm from the bottom of the transition plate, and the distance between the top of the transition plate and the bottom of the roadbed surface layer is 2000 mm-3000 mm.
As a further improvement of the technology, in the step (6), cement slurry is injected from the outer side to the inner side of the track beam, wherein the cement slurry water cement ratio is 0.7-1.0, the initial setting time of the slurry is 1.5h, the grouting pressure is 0.6-1.0 MPa, and common Portland cement with the mark of 42.5 is selected. The grouting proportion and the grouting standard are required to be comprehensively analyzed according to the difference condition of the site, geological conditions and load conditions in the site use process, and are tested under the condition permission, and finally the grouting proportion and the grouting standard are determined.
As a further improvement of the above technique, in the sedimentation observation of the treatment region in the step (7), the standard of the sedimentation observation is about 3mm/d, and if it is larger than this, it is necessary to adjust the grouting scheme; if the value is smaller than the value, the grouting effect is good, the processed elevation reaches the design requirement, and the observation is carried out to verify the effectiveness of the processing.
As a further improvement of the above technique, in the step (8), post-construction settlement observation was performed for about 3 days after completion of grouting.
The treatment method also comprises the step of forming holes at the positions with overlarge settlement when the settlement occurs on the two sides of the pile foundation track beam, wherein the diameter of the holes is A110mm, and the depth of the bottoms of the holes is about 2 m. Then a grouting pipe with a first grouting port and a rubber one-way valve is installed, length records are made, and the pipe is 20cm higher than the ground. The gaps between the drilled holes are filled with casing materials, and the mixing ratio of the casing materials is as follows: and (3) cement: bentonite=0.6-0.8:1.2. And then repeating the steps (5) to (10).
The invention also discloses a processing structure capable of repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation, which comprises a plurality of transition plates continuously arranged at two sides of the track beam, grouting holes penetrating through the transition plates are formed at the positions, close to the track beam, of two ends far away from the track beam or corresponding roadbed surface layers, of the transition plates, a grouting pipe and a grouting core pipe are sequentially arranged in the grouting holes, a first grouting port and a rubber one-way valve are arranged on the grouting pipe, the first grouting port and the rubber one-way valve are arranged at equal intervals with the bottoms of the transition plates, a gap between the grouting pipe and the transition plates is plugged by cement, a second grouting port and a two-way bowl-shaped rubber valve are arranged on the grouting core pipe, and the height positions of the first grouting port and the second grouting port correspond.
Specifically: the diameter of the grouting holes is 50mm, and the longitudinal distance is 0.7 m-1.5 m.
The slurry discharge port and the rubber one-way valve are 500mm away from the bottom of the transition plate, and the top of the transition plate is 2000 mm-3000 mm away from the bottom of the roadbed surface layer.
The grouting core pipe is provided with a second slurry outlet and a two-way bowl-shaped rubber valve, and the height positions of the first slurry outlet and the second slurry outlet correspond.
Compared with the prior art, the invention has the beneficial effects that:
(1) The treatment method capable of repeatedly adjusting the sedimentation difference is based on common abnormal sedimentation treatment, combines sedimentation observation in the implementation process, adopts repeated grouting so as to achieve the expected treatment effect, and has high treatment efficiency;
(2) In the treatment method with repeatable adjustment of the sedimentation difference, the adopted mechanical equipment is common, the adopted process is simple, the implementation cost is very low, the operability is relatively convenient, the influence on the environment is relatively small, the treatment efficiency is high, the implementation period is short, the implementation process is stable and safe, the operation and maintenance cost is reduced, the defects in the conventional treatment are overcome, a novel treatment method for differential sedimentation treatment in traffic infrastructure projects is provided, and the application value is relatively high;
(3) The treatment structure with the repeatable adjustment of the sedimentation difference is simple and easy to realize.
Drawings
The invention is described in detail below with reference to the attached drawings and specific examples:
FIG. 1 is a schematic diagram of a processing structure in which differential settlement occurs between different rigidities on two sides of a pile foundation rail beam of a deep soft soil foundation;
FIG. 2 is a schematic illustration of grouting implementation during the treatment of differential settlement in the present invention.
Detailed Description
Embodiment one:
as shown in fig. 1 and 2, the processing structure capable of repeatedly adjusting the settlement difference at two sides of a pile foundation track beam of a deep soft soil foundation comprises a plurality of transition plates 2 which are continuously arranged at two sides of the track beam 1, grouting holes 8 penetrating through the transition plates 2 are formed in positions, close to the track beam 1, of two ends of the track beam 1 or corresponding roadbed surface layers 3, of the transition plates 2, grouting pipes 4 and grouting core pipes 5 are sequentially arranged in the grouting holes 8, a first grouting port 41 and a rubber check valve 42 are arranged on the grouting pipes 4, the first grouting port 41 and the rubber check valve 42 are arranged at intervals with the bottoms of the transition plates 2, a gap between the grouting pipes 4 and the transition plates 2 is plugged by cement, a second grouting port 51 and a bidirectional bowl-shaped rubber valve 52 are arranged on the grouting core pipes 5, and the height positions of the first grouting port 41 and the second grouting port 51 correspond to each other. The diameter of the grouting holes 8 is 50mm, the longitudinal distance is 1.2m, the distance between the first slurry discharging port 41 and the rubber check valve 42 is 500mm from the bottom of the transition plate, and the distance between the top of the transition plate 2 and the bottom of the roadbed surface layer 3 is 2000mm.
The invention relates to a processing structure capable of repeatedly adjusting sedimentation differences at two sides of a pile foundation track beam of a deep soft soil foundation, which comprises the following specific steps:
(1) The transition plates 2 arranged continuously on both sides of the track beam 1 are installed: when a newly built structure is constructed, in the process of pouring the track beam 1 after backfilling sand 9 is excavated, transition plates 2 which are continuously arranged at two sides of the track beam 1 are symmetrically installed;
(2) Reserving grouting holes 8: grouting holes 8 can be reserved in advance at the positions A of the transition plate 2, which are close to the track beam 1, far from the two ends of the track beam 1 and the corresponding roadbed surface layers 3, wherein the diameter of each grouting hole 8 is 50mm, and the longitudinal distance is 1.2 m.
(3) And (3) manufacturing a grouting pipe 4: manufacturing a grouting pipe 4 with a first grouting opening 41 and a one-way valve 42, wherein the first grouting opening 41 and the one-way valve 42 are arranged at intervals with the bottom of the transition plate 2, and a gap between the grouting pipe 4 and the transition plate 2 is plugged by cement; the pipe diameter of the grouting pipe 4 is 48mm, the one-way valve 42 is a rubber one-way valve, the distance between the first slurry discharging port 41 and the rubber one-way valve 42 and the bottom of the transition plate 2 is 500mm, and the distance between the top of the transition plate 2 and the bottom of the roadbed surface layer 3 is 2000mm.
(4) Embedding grouting pipe 4: burying the manufactured grouting pipe 4 to a preset position and elevation;
(5) When excessive differential settlement occurs on two sides of the pile foundation track beam 1 in the on-site monitoring, placing a grouting core pipe 5 with a second grouting port 51 and a two-way bowl-shaped rubber valve 52 into the pre-buried grouting pipe 4 until the grouting core pipe bottom is reached, wherein the first grouting port 41 of the grouting pipe 4 corresponds to the second grouting port 51 of the grouting core pipe 5 in height position;
(6) Grouting 6 from the outer side to the inner side of the track beam 1: the cement slurry 6 has a water cement ratio of 0.7-1.0, initial setting time of the slurry of 1.5h, grouting pressure of 0.6-1.0 MPa, and common Portland cement with the mark of 42.5, grouting proportion and grouting standard, and needs comprehensive analysis according to the difference condition of the site, geological conditions and load conditions in the use process of the site, and tests under the condition of allowing, so as to finally determine the grouting proportion and grouting standard;
(7) In the grouting process, carrying out sedimentation observation on a treatment area and simultaneously carrying out pressure maintaining, wherein the sedimentation observation standard in the step is about 3mm/d, and if the sedimentation observation standard is greater than the standard, the grouting scheme is required to be adjusted; if the ratio is smaller than the value, the grouting effect is better, the processed elevation reaches the design requirement, and the observation is carried out to verify the effectiveness of the processing;
(8) After grouting is completed, carrying out post-construction settlement observation for a certain time, if the completion effect is poor, carrying out post-construction settlement observation for about 3 days after grouting is completed, and repeating the steps (5) to (7) until the settlement difference at two sides of the pile foundation track beam 1 is adjusted to meet the field use requirement;
(9) And cleaning the holes, and pulling out the grouting core tube 5.
(10) Restoring the structural appearance of the pavement surface layer.
(11) When the situation that the differential settlement of the two sides of the pile foundation 7 and the track beam 1 is too large occurs again, the steps 5 to 10 are repeated.
The processing method of the invention combines sedimentation observation in the implementation process on the basis of common abnormal sedimentation treatment, adopts repeatable grouting, can effectively solve the defects in the traditional bridge abutment vehicle jump problem processing, has relatively simplified operation, lower implementation process cost and greatly improved processing efficiency, reduces construction risk in the processing process and reduces operation and maintenance cost.
Embodiment two:
the differential settlement treatment method disclosed by the invention can be also applied to the built structures, and when the settlement is overlarge at two sides of the pile foundation track beam:
firstly, forming holes at the position with overlarge sedimentation, wherein the diameter of each hole is A110mm, and the depth of each hole bottom is 3m;
then, a grouting pipe 4 with a first grouting port 41 and a rubber one-way valve 42 is installed, length records are made, and the pipe is 20cm higher than the ground; the gaps between the drilled holes are filled with casing materials, and the mixing ratio of the casing materials is as follows: and (3) cement: bentonite=0.6-0.8:1.2, repeating steps 5 to 10.
The present invention is not limited to the above-described embodiments, and various modifications or variations of the present invention are intended to be included in the present invention, provided that they fall within the scope of the appended claims and the equivalents thereof, unless they depart from the spirit and scope of the present invention.
Claims (7)
1. The treatment method capable of repeatedly adjusting the sedimentation difference at two sides of the pile foundation track beam of the deep soft soil foundation comprises the following specific steps:
(1) Installing transition plates continuously arranged on two sides of the track beam;
(2) Reserving grouting holes;
(3) And (3) manufacturing a grouting pipe: manufacturing a grouting pipe with a first grouting port and a one-way valve, wherein the first grouting port and the one-way valve are arranged at intervals with the bottom of a transition plate, and a gap between the grouting pipe and the transition plate is plugged by cement;
(4) Burying a grouting pipe: burying the manufactured grouting pipe to a preset position and elevation;
(5) When the overlarge differential settlement occurs on two sides of the pile foundation track beam in the on-site monitoring, placing a grouting core pipe with a second grouting port and a two-way rubber valve into the pre-buried grouting pipe to the bottom of the grouting pipe, wherein the first grouting port corresponds to the second grouting port in height position;
(6) Grouting cement paste from the outer side to the inner side of the track beam;
(7) In the grouting process, carrying out sedimentation observation on a treatment area and simultaneously carrying out pressure maintaining;
(8) After grouting is completed, carrying out post-construction settlement observation for a certain time, and if the completion effect is poor, repeating the steps (5) to (7) until the settlement difference at two sides of the pile foundation track beam is adjusted to meet the field use requirement;
(9) And cleaning holes and pulling out the grouting core pipe;
(10) Restoring the structural appearance of the pavement surface layer;
the treatment structure capable of repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation comprises a plurality of transition plates which are continuously arranged at two sides of the track beam, grouting holes penetrating through the transition plates are formed in the positions, close to the track beam, of two ends far away from the track beam or corresponding roadbed surface layers, of the transition plates, a grouting pipe and a grouting core pipe are sequentially arranged in the grouting holes, a first grouting port and a rubber check valve are arranged on the grouting pipe, the first grouting port and the rubber check valve are arranged at intervals with the bottoms of the transition plates, gaps between the grouting pipe and the transition plates are plugged by cement, a second grouting port and a bidirectional bowl-shaped rubber valve are arranged on the grouting core pipe, and the height positions of the first grouting port and the second grouting port correspond to each other; the diameter of the grouting holes is 50mm, and the longitudinal spacing is 0.7 m-1.5 m; the first slurry discharge port and the rubber one-way valve are 500mm away from the bottom of the transition plate, and the top of the transition plate is 2000 mm-3000 mm away from the bottom of the roadbed surface layer.
2. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: in the step (1), when the newly built structure is excavated and the track beam is poured after backfilling sand, the transition plates continuously arranged on two sides of the track beam are symmetrically installed.
3. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: in the step (2), grouting holes can be reserved in advance at the two ends of the transition plate, which are close to the track beam and far from the track beam, and the positions of the corresponding roadbed surface layers.
4. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: in the step of manufacturing the grouting pipe in the step (3), the pipe diameter of the grouting pipe is 48mm, and the one-way valve is a rubber one-way valve.
5. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: and (3) injecting cement paste from the outer side to the inner side of the track beam in the step (6), wherein the cement paste water cement ratio is 0.7-1.0, the initial setting time of the cement paste is 1.5h, the grouting pressure is 0.6-1.0 MPa, and the common silicate cement with the mark of 42.5 is selected.
6. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: in the sedimentation observation of the treatment area in the step (7), the standard of the sedimentation observation is 3mm/d, and if the standard is larger than the standard, the grouting scheme needs to be adjusted; if the value is smaller than this value, the grouting effect is better.
7. The treatment method for repeatedly adjusting the settlement difference at two sides of the pile foundation track beam of the deep soft soil foundation according to claim 1, wherein the treatment method comprises the following steps: in the step (8), post-construction settlement observation was performed for 3 days after completion of grouting.
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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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| 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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Citations (5)
| 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 |
-
2019
- 2019-03-26 CN CN201910233150.XA patent/CN110080203B/en active Active
Patent Citations (5)
| 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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| CN110080203A (en) | 2019-08-02 |
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