CN113373902B - Grouting device suitable for soil solidification around stake of crowd under water - Google Patents
Grouting device suitable for soil solidification around stake of crowd under water Download PDFInfo
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- CN113373902B CN113373902B CN202110669874.6A CN202110669874A CN113373902B CN 113373902 B CN113373902 B CN 113373902B CN 202110669874 A CN202110669874 A CN 202110669874A CN 113373902 B CN113373902 B CN 113373902B
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- structure section
- plate
- grouting
- side plate
- grout outlet
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
The invention discloses a grouting device suitable for solidifying soil around underwater pile groups, and relates to the technical field of grouting. This slip casting device includes: the upper structure section is arranged on the lower structure section, the cutting edge is arranged below the lower structure section, the floating caisson is arranged on the side wall of the upper structure section, a pile foundation is arranged in the lower structure section and the upper structure section, an upper grout outlet and a lower grout outlet are formed in the side wall of the lower structure section, a side grouting pipe and a grouting rod are arranged on the upper structure section, and the side grouting pipe is connected with the upper grout outlet and the lower grout outlet. The grouting device forms the pile group construction cofferdam through the upper structure section and the lower structure section, can solidify large-range soil bodies including inter-pile and pile periphery, simultaneously increases the solidification depth of the soil body, improves the horizontal bearing capacity of a pile foundation and the scouring resistance of soil around the pile, has the characteristics of continuous and convenient construction, and simultaneously, the upper structure section can be repeatedly utilized.
Description
Technical Field
The invention relates to the technical field of grouting, in particular to a grouting device suitable for solidifying soil around underwater pile groups.
Background
The pile foundation is an important form of bridge foundation, and is often used in the arrangement mode of pile group in engineering practice. In the construction of a bridge, how to effectively carry out pile foundation construction is an important engineering problem. In the long-term use after the completion of building, rivers erode can cause the scouring loss of the pile periphery soil body, and then produce huge adverse effect to pile foundation bearing performance.
In the prior art, steel cofferdams are frequently installed in underwater pile foundation construction, water in the cofferdams is drained to obtain dry construction operation spaces, and then relevant operation work is performed in the cofferdams. How to efficiently build the cofferdam is very important for the smooth development of pile foundation construction. Generally, the strength of the underwater shallow soil body is weak, the horizontal bearing capacity of the pile foundation is affected, and the underwater shallow soil body is easy to wash under the action of water flow. Therefore, grouting reinforcement construction needs to be continued more, a solidification effect on a shallow soil body is formed, soil body erosion is effectively reduced, and the bearing performance of a pile foundation is improved. But conventional grouting device is mostly local processing, can't realize evenly being under construction around the grouted pile on a large scale to with cofferdam construction mutual independence, be unfavorable for control project period.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a grouting device suitable for solidifying soil around underwater pile groups. The grouting device forms the pile group construction cofferdam through the upper structure section and the lower structure section, can solidify large-range soil bodies including inter-pile and pile periphery, simultaneously increases the solidification depth of the soil body, improves the horizontal bearing capacity of a pile foundation and the scouring resistance of soil around the pile, has the characteristics of continuous and convenient construction, and simultaneously, the upper structure section can be repeatedly utilized.
In order to achieve the purpose, the invention adopts the following technical scheme: a slip casting device suitable for soil solidification around underwater pile group includes: the upper structure section is arranged on the lower structure section, the cutting edge is arranged below the lower structure section, the floating caisson is arranged on the side wall of the upper structure section, a pile foundation is arranged in the lower structure section and the upper structure section, an upper grout outlet and a lower grout outlet are formed in the side wall of the lower structure section, a side grouting pipe and a grouting rod are arranged on the upper structure section, and the side grouting pipe is connected with the upper grout outlet and the lower grout outlet.
Further, the lower structure section is located below the mud surface, and the upper structure section is located above the mud surface.
Further, the lower structural section includes: the vertical plate comprises an inner vertical plate, an upper partition plate, a middle vertical plate, a lower partition plate, a lower inner side plate, a lower outer side plate and a lower bottom plate; one end of the inner vertical plate is fixedly connected with one end of the lower partition plate, the lower portion of the lower partition plate is fixedly connected with the lower inner side plate and the lower outer side plate respectively, one end of the lower bottom plate is fixedly connected with the other end of the lower inner side plate, the other end of the lower bottom plate is fixedly connected with the other end of the lower outer side plate, the upper partition plate is arranged on the middle vertical plate, the middle vertical plate is arranged on the lower partition plate, and the middle vertical plate is arranged close to the outer side.
Furthermore, an upper grout outlet on the lower structure section penetrates through the inner vertical plate, a lower grout outlet on the lower structure section penetrates through the lower inner side plate, protective grooves are formed in the upper grout outlet and the lower grout outlet and fixedly connected with the lower inner side plate, each protective groove is of a hollow structure, and the bottom of each protective groove is of an inclined plane structure.
Furthermore, the lower bottom plate is fixedly connected with the cutting edge, and the sharp angle of the cutting edge faces downwards.
Further, the upper structural section includes: the movable base, backstop, go up the roof, annotate slip casting pipe, go up the interior plate, go up the lateral plate, go up the interior plate and go up the lateral plate of fixed connection in proper order on going up the roof, upward be equipped with the track on the roof, orbital both ends are equipped with the backstop, backstop and roof fixed connection, be equipped with the movable base on the track, the slip casting pole runs through the movable base, the slip casting pipe is connected with annotating the slip casting pipe, the outside fixed connection who goes up the lateral plate floats the caisson.
Further, the upper inner side plate is in contact with the upper partition plate, and the upper outer side plate is in contact with the lower partition plate.
Furthermore, a valve is arranged on the floating and sinking tank, and a floating and sinking pipe is arranged at the upper part of the valve.
Further, slip casting pole fixed connection horizontal pole, the both ends and the crossbeam of horizontal pole are connected, crossbeam and pole setting fixed connection, pole setting and sliding seat fixed connection, sliding seat, horizontal pole, slip casting pole all with cable junction.
Compared with the prior art, the invention has the following beneficial effects: the lower structure section in the grouting device is of a hollow structure, so that the sinking efficiency of the grouting device can be improved by pouring concrete; the side wall of the upper structure section of the invention is provided with the floating caisson, and the floating caisson can assist to realize the floating and sinking of the upper structure section through the operation of filling and draining, so the grouting device of the invention can reduce the use of large-scale water machinery and the deviation correction in the construction process. The grouting rod can move and perform grouting at any position in the cofferdam, so that large-range soil body solidification treatment around and among underwater grouped piles is realized, in addition, the grouting rod has a vertical jacking function and can solidify and treat soil among piles with a certain depth, a grout outlet of a lower structural section of the cofferdam is provided with a soil body which can treat the deeper outer side of the grouped piles, the scouring resistance effect and durability are greatly improved, and the horizontal bearing performance of the grouped piles is also improved after the soil body is strengthened. The grouting device has the function of constructing the cofferdam underwater, so that the efficient connection of foundation construction and grouting construction links is realized, the construction convenience is improved, the upper structural section and the lower structural section are in non-permanent connection, the upper structural section can be hoisted and recycled after the construction is finished, the lower structural section is reserved in a soil body outside the grouped piles, the problems that the uplift resistance of the structure in the soil is large and the hoisting is difficult are solved, the lateral constraint effect can be formed on the grouped piles, and the bearing performance of the grouped piles is favorably improved.
Drawings
FIG. 1 is a schematic view of the grouting device for solidifying soil around underwater piles according to the present invention;
FIG. 2 is a top view of the grouting device of the present invention for solidifying soil around underwater piles;
FIG. 3 is a cross-sectional view of a grouting apparatus of the present invention adapted for solidifying soil around underwater piles;
wherein, 1-upper structure section; 2-lower structural section; 3-cutting edge; 4-floating caisson; 5-a valve; 6-a cross beam; 7-a movable seat; 8-erecting a rod; 9-a cross bar; 10-a grouting rod; 11-a track; 12-a bolt; 13-a stop; 14-an inner vertical plate; 15-pile foundation; 16-upper inner decking; 17-upper outer panel; 18-upper top plate; 19-protecting the groove; 20-a cable; 22-floating and sinking pipe; 23-side grouting pipe; 24-an upper baffle plate; 25-a middle vertical plate; 26-a lower baffle plate; 27-upper pulp outlet; 28-lower pulp outlet; 29-lower floor; 30-curing zone, 31-lower inner panel, 32-lower outer panel.
Detailed Description
The technical solution of the present invention is further explained below with reference to the accompanying drawings.
Referring to fig. 1-3, the present invention provides a grouting apparatus suitable for solidifying soil around underwater piles, comprising: the upper structure section 1 and the lower structure section 2 are both rectangular steel structures, the upper structure section 1 is arranged on the lower structure section 2, the blade foot 3 is arranged below the lower structure section 2, the blade foot 3 is of a steel structure, and the sharp angle of the blade foot 3 faces downwards, so that the lower structure section 2 can be pricked into underwater soil. Be equipped with on the lateral wall of upper structure section 1 and float caisson 4, float caisson 4 embeds there is liquefied high-pressure gas, controls upper structure section 1's come-up or sink through floating caisson 4, helps reducing the use of large-scale machinery on water and rectifying in the work progress. The lower structure section 2 is a hollow structure, the lower structure section 2 and the upper structure section 1 are provided with pile foundations 15, specifically, the lower structure section 2 surrounds the grouped piles and is located below the mud surface, and the upper structure section 1 surrounds the grouped piles and is located above the mud surface. An upper grout outlet 27 and a lower grout outlet 28 are formed in the side wall of the lower structure section 2, a side grouting pipe 23 and a grouting rod 10 are arranged on the upper structure section 1, the side grouting pipe 23 is connected with the upper grout outlet 27 and the lower grout outlet 28, grout is extruded from the upper grout outlet 27 and the lower grout outlet 28 through the side grouting pipe 23, and sinking efficiency of the lower structure section 2 is improved; the grout is pressed into the soil between the adjacent pile foundations 15 for a certain depth through the grouting rod 10, and the pile foundation soil is high in processing precision and good in effect.
The lower structural section 2 of the present invention includes: the inner vertical plate 14, the upper partition plate 24, the middle plate 25, the lower partition plate 26, the lower inner plate 31, the lower outer plate 32 and the lower bottom plate 29; one end of the inner vertical plate 14 is fixedly connected with one end of the lower partition plate 26, the lower part of the lower partition plate 26 is fixedly connected with the lower inner side plate 31 and the lower outer side plate 32 respectively, one end of the lower bottom plate 29 is fixedly connected with the other end of the lower inner side plate 31, the other end of the lower bottom plate 29 is fixedly connected with the other end of the lower outer side plate 32, the lower bottom plate 29 is fixedly connected with the blade leg 3, the upper partition plate 24 is arranged on the middle vertical plate 25, the middle vertical plate 25 is arranged on the lower partition plate 26, and the middle vertical plate 25 is arranged close to the outer side. An upper grout outlet 27 on the lower structural section 2 penetrates through the inner vertical plate 14, and the upper grout outlet 27 is positioned near the mud surface; the lower grout outlet 28 on the lower structure section 2 penetrates through the lower inner side plate 31, the lower grout outlet 28 is located at a deeper position below the mud surface, grout is extruded from the upper grout outlet 27 and the lower grout outlet 28 to enter soil bodies at a certain deeper position around the group pile foundation to form a solidification area 30, and therefore solidification of the deeper soil bodies around the group piles can be achieved. The upper slurry outlet 27 and the lower slurry outlet 28 are provided with a protective groove 19, the protective groove 19 is fixedly connected with the lower inner side plate 31, the protective groove 19 is of a hollow structure, the bottom of the protective groove is of an inclined plane structure, and the protective groove 19 can protect the upper slurry outlet 27 and the lower slurry outlet 28 from being damaged in the descending process of the lower structure section 2.
The upper structure section 1 of the present invention includes: the movable seat 7, the stop 13, the upper top plate 18, the middle grouting pipe and the upper outer plate 17 of the upper inner plate 16; the upper inner side plate 16 is in contact with the upper partition plate 24, the upper outer side plate 17 is in contact with the lower partition plate 26, and after construction is finished, the upper structure section is lifted for recycling. The upper top plate 18 is fixedly connected with the upper inner side plate 16 and the upper outer side plate 17 in turn and is arranged along the axis in a segmented manner so as to leave a space for the outlet of the side grouting pipe 23. Be equipped with track 11 on the roof 18, the both ends of track 11 are equipped with backstop 13, backstop 13 passes through bolt 12 and roof 18 fixed connection, be equipped with sliding seat 7 on the track 11, slip casting pole 10 runs through sliding seat 7, slip casting pole 10 fixed connection horizontal pole 9, the both ends of horizontal pole 9 are connected with crossbeam 6, horizontal pole 9 can be followed crossbeam 6 and removed in upper structure section 1 inner space, crossbeam 6 and pole setting 8 fixed connection, pole setting 8 and sliding seat 7 fixed connection, sliding seat 7 can be followed track 11 and removed, sliding seat 7, horizontal pole 9, slip casting pole 10 all is connected with cable 20, after the circular telegram, sliding seat 7 removes on track 11, horizontal pole 9 removes on crossbeam 6, slip casting pole 10 can vertically go up and down and be connected with the slip casting pipe, the thick liquid flows into slip casting pole 10 by the slip casting pipe and is pressed in to certain degree of depth soil layer between the adjacent pile foundation 15 at last. Go up the outside fixed connection of outer panel 17 and float caisson 4, be equipped with valve 5 on the caisson 4, the upper portion of valve 5 is equipped with floats heavy pipe 22, controls the intake or the exhaust of floating heavy pipe 22 through valve 5 to the supplementary come-up and the sinking that realize the upper structure section.
The grouting device of the invention has the working process that: the lower structure section 2 of the invention is driven to a certain preset depth below the mud surface, the upper partition plate 24 of the lower structure section 2 is kept close to the height of the mud surface, the upper structure section 1 is installed at the top of the lower structure section 2, and the valve 5 is adjusted to enable the floating and sinking pipe 22 to enter air, so that the upper structure section sinks, an internal construction dry dock is formed, and pile group foundation construction is carried out. After the construction of the pile foundation 15 is completed, slurry is pressed out from the upper slurry outlet 27 and the lower slurry outlet 28 through the side grouting pipe 23 by using a pressure pump, so that the solidification treatment of the deeper soil body around the pile group foundation is realized; the movable base 7 is moved to different positions among the piles, and grout is injected into soil layers between the piles between the pile foundations 15 by the grouting rods 10 to a certain depth in combination with the pressure pump, so that the solidification treatment of the soil between the piles is realized. After the grouting construction is finished, the valve 5 is opened, liquefied air in the floating and sinking tank 4 is discharged through the floating and sinking pipe 22, and the upper structure section 1 is removed under the buoyancy action of the hoisting machinery and the floating and sinking tank 4 after the floating and sinking tank 4 is emptied. The grouting device of the invention keeps the lower structure section in the soil body outside the grouped piles after construction, thereby avoiding the problems of larger uplift resistance and difficult hoisting of the structure in the soil, and forming a lateral constraint effect on the grouped piles due to the existence of the lower structure section, which is beneficial to improving the bearing performance of the grouped piles; meanwhile, the grouting device realizes the solidification treatment of soil bodies with a certain depth in a larger range around the underwater pile group foundation, compared with the common grouting device, the grouting device can treat the soil bodies with deeper outer sides of the pile group, can greatly improve the anti-scouring effect and durability of the soil bodies near the mud surface, and is also beneficial to improving the horizontal bearing performance of the pile group after the soil bodies are strengthened.
The above are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the above examples, and all technical solutions that fall under the spirit of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention may be apparent to those skilled in the relevant art and are intended to be within the scope of the present invention.
Claims (4)
1. A grouting device suitable for soil solidification around underwater pile groups is characterized by comprising: the device comprises an upper structure section (1), a lower structure section (2), a cutting edge (3), a floating and sinking box (4) and a grouting rod (10), wherein the upper structure section (1) is arranged on the lower structure section (2), the lower structure section (2) is positioned below a mud surface, and the upper structure section (1) is positioned above the mud surface; a blade foot (3) is arranged below the lower structure section (2), a floating caisson (4) is arranged on the side wall of the upper structure section (1), the lower structure section (2) is of a hollow structure, a pile foundation (15) is arranged in the lower structure section (2) and the upper structure section (1), an upper grout outlet (27) and a lower grout outlet (28) are arranged on the side wall of the lower structure section (2), a side grouting pipe (23) and a grouting rod (10) are arranged on the upper structure section (1), and the side grouting pipe (23) is connected with the upper grout outlet (27) and the lower grout outlet (28);
the upper structural section (1) comprises: the movable base (7), the stop (13), the upper top plate (18), the middle grouting pipe, the upper inner side plate (16) and the upper outer side plate (17), wherein the upper top plate (18) is sequentially and fixedly connected with the upper inner side plate (16) and the upper outer side plate (17), the upper top plate (18) is provided with a track (11), two ends of the track (11) are provided with the stop (13), the stop (13) is fixedly connected with the upper top plate (18), the track (11) is provided with the movable base (7), the grouting rod (10) penetrates through the movable base (7), the grouting rod (10) is connected with the middle grouting pipe, and the outer side of the upper outer side plate (17) is fixedly connected with the floating caisson (4); the grout flows into the grouting rod (10) from the grouting pipe and is pressed into a soil layer with a certain depth between adjacent pile foundations (15);
slip casting pole (10) fixed connection horizontal pole (9), the both ends and crossbeam (6) of horizontal pole (9) are connected, crossbeam (6) and pole setting (8) fixed connection, pole setting (8) and sliding seat (7) fixed connection, sliding seat (7), horizontal pole (9), slip casting pole (10) all are connected with cable (20).
2. Grouting device according to claim 1, characterised in that the lower structure section (2) comprises: the vertical plate comprises an inner vertical plate (14), an upper clapboard (24), a middle vertical plate (25), a lower clapboard (26), a lower inner side plate (31), a lower outer side plate (32) and a lower bottom plate (29); one end of the inner vertical plate (14) is fixedly connected with one end of a lower partition plate (26), the lower part of the lower partition plate (26) is fixedly connected with a lower inner side plate (31) and a lower outer side plate (32) respectively, one end of the lower bottom plate (29) is fixedly connected with the other end of the lower inner side plate (31), the other end of the lower bottom plate (29) is fixedly connected with the other end of the lower outer side plate (32), the upper partition plate (24) is arranged on the middle vertical plate (25), the middle vertical plate (25) is arranged on the lower partition plate (26), and the middle vertical plate (25) is arranged close to the outer side; the upper inner side plate (16) is in contact with the upper partition plate (24), and the upper outer side plate (17) is in contact with the lower partition plate (26); the lower bottom plate (29) is fixedly connected with the cutting edge (3), and the sharp angle of the cutting edge (3) faces downwards.
3. The grouting device for soil mass solidification around underwater piles according to claim 2, characterized in that an upper grout outlet (27) on the lower structure section (2) penetrates through the inner vertical plate (14), a lower grout outlet (28) on the lower structure section (2) penetrates through the lower inner side plate (31), a protective groove (19) is arranged at the upper grout outlet (27) and the lower grout outlet (28), the protective groove (19) is fixedly connected with the lower inner side plate (31), and the protective groove (19) is of a hollow structure and has an inclined surface structure at the bottom.
4. The grouting device for soil solidification around underwater piles according to claim 1, characterized in that a valve (5) is arranged on the floating and sinking tank (4), and a floating and sinking pipe (22) is arranged on the upper part of the valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669874.6A CN113373902B (en) | 2021-06-17 | 2021-06-17 | Grouting device suitable for soil solidification around stake of crowd under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669874.6A CN113373902B (en) | 2021-06-17 | 2021-06-17 | Grouting device suitable for soil solidification around stake of crowd under water |
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| Publication Number | Publication Date |
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| CN113373902A CN113373902A (en) | 2021-09-10 |
| CN113373902B true CN113373902B (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110669874.6A Active CN113373902B (en) | 2021-06-17 | 2021-06-17 | Grouting device suitable for soil solidification around stake of crowd under water |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277876A (en) * | 2011-05-17 | 2011-12-14 | 石家庄铁道大学 | Multifunctional pile-raft foundation and construction process thereof |
| CN103967031A (en) * | 2013-01-24 | 2014-08-06 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil and construction method of caisson and pile combined foundation |
| CN205576929U (en) * | 2016-04-22 | 2016-09-14 | 广州市建筑科学研究院有限公司 | Along with boring with high -pressure slip casting system of tubular pile stake side segmentation |
| CN107642041A (en) * | 2017-08-17 | 2018-01-30 | 华东交通大学 | The hollow clump of piles anchorage of super-large diameter |
| CN108360510A (en) * | 2018-05-09 | 2018-08-03 | 合肥学院 | A kind of grouting behind shaft or drift lining system and method increasing perfusion shaft resistance |
| CN110397057A (en) * | 2019-07-31 | 2019-11-01 | 武汉市市政建设集团有限公司 | A kind of soft soil area Self-sinking type steel open caisson support system and method |
-
2021
- 2021-06-17 CN CN202110669874.6A patent/CN113373902B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277876A (en) * | 2011-05-17 | 2011-12-14 | 石家庄铁道大学 | Multifunctional pile-raft foundation and construction process thereof |
| CN103967031A (en) * | 2013-01-24 | 2014-08-06 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil and construction method of caisson and pile combined foundation |
| CN205576929U (en) * | 2016-04-22 | 2016-09-14 | 广州市建筑科学研究院有限公司 | Along with boring with high -pressure slip casting system of tubular pile stake side segmentation |
| CN107642041A (en) * | 2017-08-17 | 2018-01-30 | 华东交通大学 | The hollow clump of piles anchorage of super-large diameter |
| CN108360510A (en) * | 2018-05-09 | 2018-08-03 | 合肥学院 | A kind of grouting behind shaft or drift lining system and method increasing perfusion shaft resistance |
| CN110397057A (en) * | 2019-07-31 | 2019-11-01 | 武汉市市政建设集团有限公司 | A kind of soft soil area Self-sinking type steel open caisson support system and method |
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| CN113373902A (en) | 2021-09-10 |
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