CN116856414A - Bridge approach pile foundation distributed grouting device and method - Google Patents
Bridge approach pile foundation distributed grouting device and method Download PDFInfo
- Publication number
- CN116856414A CN116856414A CN202310784664.0A CN202310784664A CN116856414A CN 116856414 A CN116856414 A CN 116856414A CN 202310784664 A CN202310784664 A CN 202310784664A CN 116856414 A CN116856414 A CN 116856414A
- Authority
- CN
- China
- Prior art keywords
- grouting
- pipe
- valve
- distributed
- pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000013459 approach Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 239000002002 slurry Substances 0.000 claims description 30
- 239000011440 grout Substances 0.000 claims description 24
- 230000002787 reinforcement Effects 0.000 claims description 23
- 238000003825 pressing Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 210000005077 saccule Anatomy 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 230000000149 penetrating effect Effects 0.000 description 11
- 239000002689 soil Substances 0.000 description 9
- 239000004568 cement Substances 0.000 description 6
- 238000007569 slipcasting Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
Abstract
The application provides a bridge approach pile foundation distributed grouting device and method, comprising the following steps: grouting pipe, grouting valve and grouting stop valve; the grouting valve comprises a grouting pipe and a pressurizing pipe, one end of the grouting pipe is connected with a grouting pump through a grouting pipe, the other end of the grouting pipe is a closed end, a grouting outlet is formed in the middle of the grouting pipe, two ends of the grouting pipe are respectively sleeved with a balloon, the balloons at the two ends of the grouting pipe are connected in series through the pressurizing pipe, and two balloons are respectively used for blocking two sides of one grouting valve, so that the grouting pipe, the grouting outlet and the corresponding grouting valve form a grouting channel. The grouting valve is arranged, and independent grouting can be carried out aiming at different grouting valves, so that grouting effect is ensured, and pile body anti-sedimentation performance after grouting is improved.
Description
Technical Field
The application belongs to the technical field of bridge pile foundation construction, and particularly relates to a bridge approach pile foundation distributed grouting device and method.
Background
The bored pile technology is widely adopted in the field of engineering construction, along with the rapid development of foundation construction in China, the requirement on the bearing capacity of a foundation is higher and higher, the requirement on the bearing capacity of a pile body is also continuously improved, the pile body bearing capacity can be obviously improved by the rear grouting technology, the bored pile technology is widely applied, a grouting pipe in the prior art is bound on a reinforcement cage, grouting is carried out through a grouting opening at the side part of the grouting pipe, and grouting pressure intensity after grouting is consistent and grouting pressure intensity cannot be adjusted according to different elevation positions when pile body concrete is poured.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The application aims to overcome the defects in the prior art, and provides a bridge approach pile foundation distributed grouting device and method.
In order to achieve the above object, the present application provides the following technical solutions:
a bridge approach pile foundation distributed grouting device, comprising:
the grouting pipes are correspondingly distributed on the inner sides of the reinforcement cages and are uniformly distributed around the circumferences of the reinforcement cages;
the slurry outlet valves are uniformly distributed on the slurry pressing pipe and extend out of the outer circumferential surface of the reinforcement cage along the radial direction;
the grout stopping valve is correspondingly arranged in the grouting pipe and is assembled in a sliding way along the axial direction of the grouting pipe:
the grouting valve comprises a grouting pipe and a pressurizing pipe, one end of the grouting pipe is connected with a grouting pump through a grouting pipe, the other end of the grouting pipe is a closed end, a grouting outlet is formed in the middle of the grouting pipe, two ends of the grouting pipe are respectively sleeved with a balloon, the balloons at the two ends of the grouting pipe are connected in series through the pressurizing pipe, two balloons are respectively used for blocking two sides of one grouting valve, and accordingly the grouting pipe, the grouting outlet and the corresponding grouting valve form a grouting channel.
Preferably, the sacculus is tubular structure, and its both ends are fixed respectively through the end plate on the slip casting pipe, two between the adjacent end plate of sacculus pass through the pressurizing pipe intercommunication, keep away from the slip casting pipe closed end the sacculus passes through the air supply pipe and corresponds to be connected on the air pump.
Preferably, the slurry supply pipe and the gas supply pipe are integrally formed or connected into a whole by bonding.
Preferably, the pulp outlet valve is a three-way pipe correspondingly connected to the pulp pressing pipe, a middle pipeline of the three-way pipe extends along the radial direction of the reinforcement cage, one pipeline end part of the three-way pipe is provided with a non-return part, and the non-return part is correspondingly sleeved on the elastic sleeve.
Preferably, the closed end of the slurry supply pipe is detachably sealed by a plunger.
Preferably, the lower end of the grouting pipe is a sharp sealing end, the lower end of the grouting pipe is inserted into the bottom of the pile hole, a grouting opening is formed in the side part of the bottom part of the grouting pipe inserted into the pile hole, and a rubber sleeve corresponding to the grouting opening is sleeved on the grouting pipe.
The utility model provides a bridge approach pile foundation distributing type mud jacking method, carries out mud jacking through arbitrary above-mentioned mud jacking device, includes:
step S1, synchronously binding a grouting pipe and a grouting valve during processing of a reinforcement cage;
s2, after bottom cleaning is completed, the reinforcement cage is lowered to the bottom of the pile hole, and concrete is poured into the pile hole;
step S3, placing the slurry stop valve into one of the grouting pipes, and enabling a slurry outlet in the middle of the slurry stop valve to be opposite to the lowest slurry outlet of the grouting pipe;
step S4, air is supplied to the two saccules, the two saccules rise and then seal the two sides of the corresponding grouting valve, grout is supplied into the grouting pipe, the grouting port and the corresponding grouting valve form a grouting channel, and grouting is carried out on the periphery of the pile hole;
and S5, grouting the grouting valves sequentially from bottom to top, and grouting the next grouting pipe after grouting operation of all the grouting valves of one grouting pipe is completed until grouting of all the grouting pipes is completed.
Preferably, in step S3, the grouting valve is opened within 24 hours of concrete pouring, and clear water is sequentially injected into the grouting valve through the grouting stopping valve during opening, and after the water pressure is reduced, the grouting stopping is performed, so that the opening is completed.
Preferably, pile body integrity detection is carried out through the sound detection pipe after pile body concrete reaches 85% of design strength, and corresponding grouting amount of each grouting valve is set according to detection results.
Preferably, when grouting, if the grouting amount of one of the grouting valves of the grouting pipe does not meet the set requirement, the non-pressed grouting amount is pressed by the grouting pipe at the upper side or the lower side of the grouting pipe.
The beneficial effects are that: after the bored pile is formed, the grout cement paste is pressed into the side soil layer of the pile by the pre-buried grout outlet valve, and the grout plays roles of penetrating, filling, compacting, splitting, solidifying and the like on the mud skin around the pile to strengthen the side soil of the pile, so that the effects of improving the ultimate bearing capacity of the pile foundation and reducing the sinking amount are achieved.
The grouting valve is arranged, and independent grouting can be carried out aiming at different grouting valves, so that grouting effect is ensured, and pile body anti-sedimentation performance after grouting is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
FIG. 1 is a schematic view of a slurry pressing device according to an embodiment of the present application;
FIG. 2 is a schematic illustration of grouting a lowermost ring tube in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of pile end grouting according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a slurry stop valve according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a slurry outlet valve according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a slurry outlet valve with a cannula according to an embodiment of the present application.
In the figure: 1. grouting pipe; 2. a sound tube; 3. a pulp outlet valve; 4. a penetrating pipe; 5. an automatic pipe coiling machine; 6. a slurry stop valve; 7. a non-return element; 601. a balloon; 602. a pressurizing tube; 603. an air supply pipe; 604. a slurry supply pipe; 605. an end plate; 701. a rubber tube.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
In the description of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present application and do not require that the present application must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The application will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
As shown in fig. 1-6, a bridge approach pile foundation distributed grouting device comprises grouting pipes 1, grouting valves 3 and grouting valves 6, wherein the number of grouting pipes 1 can be more than 3-6, preferably 4, the grouting pipes 1 are correspondingly distributed on the inner side of a reinforcement cage and are uniformly distributed in the circumferential direction of the reinforcement cage, and the grouting pipes 1 are fixed with the reinforcement cage in a binding or welding mode.
The grouting valves 3 are uniformly distributed on the grouting pipe 1 and extend to the outer peripheral surface of the reinforcement cage along the radial direction, and further in order to ensure the grouting effect, the grouting valves 3 can extend out of the outer peripheral surface of the reinforcement cage along the radial direction and then are abutted against the inner wall of the pile hole, so that the grouting effect is improved, and one grouting valve 3 is arranged on the same grouting pipe 1 from the pile bottom to every 5 m; the grouting valve 6 is correspondingly arranged in the grouting pipe 1 and is assembled in a sliding manner along the axial direction of the grouting pipe 1, so that accurate point position type grouting can be realized, different grouting pressures can be adopted at different elevations according to actual demands, and different grouting amounts can be preset.
The plurality of grouting valves 3 in the same longitudinal direction are connected in series through the grouting pipe 1, so that grouting can be performed on the positions of the plurality of grouting valves 3 with different elevations through one grouting pipe 1, different grouting pressures can be adopted at the positions with different elevations according to actual demands, and different grouting amounts can be preset.
The grout stop valve 6 comprises a grouting pipe and a pressurizing pipe 602, the grout stop valve 6 is correspondingly arranged in the grouting pipe 1 and is assembled in a sliding manner along the axial direction of the grouting pipe 1, and the grout stop valve 6 can pass through a plurality of grout outlet valves 3 along with the sliding of the grout stop valve 6 along the grouting pipe 1, so that independent grouting can be carried out on the grout outlet valves 3 at different points. The grouting pipe is a metal pipe, one end of the grouting pipe is connected with a grouting pump through a grouting pipe 604 so as to perform grouting through the grouting pump, and the other end of the grouting pipe is a closed end.
The middle part at the slip casting pipe is equipped with the grout outlet, and the grout outlet is one or more perforation, and the sacculus 601 has been cup jointed respectively at the both ends of slip casting pipe, and sacculus 601 that is located slip casting pipe both ends is established ties through pressurizing pipe 602, and sacculus 601 is the rubber material, can through filling gassing used repeatedly to carry out the slip casting to every grout outlet valve 3 corresponding position.
When the balloon 601 is inflated, the balloon 601 is inflated and props against the inner wall of the grouting pipe 1 to form a seal, the grouting stop valve 6 is lowered to the position of the grouting valve 3 to be grouting, and the two balloons 601 are respectively blocked on the upper side and the lower side of the grouting valve 3, so that the grouting pipe, the grouting outlet and the corresponding grouting valve 3 form a grouting channel.
In the present embodiment, the grouting operation should be performed in such a manner that a plurality of the discharge valves 3 on the same grouting pipe 1 should be taken from the bottom up.
Grouting can be performed by adopting a clockwise, anticlockwise and jump grouting mode for a plurality of grouting pipes 1.
In an alternative embodiment, the balloon 601 is in a cylindrical structure, two ends of the balloon 601 are respectively fixed on the grouting pipe through end plates 605, the end plates 605 are provided with perforations corresponding to the grouting pipe and are fixed through welding and sealing, the adjacent end plates 605 of the two balloons 601 are communicated through a pressurizing pipe 602, and the balloon 601 far from the sealed end of the grouting pipe is correspondingly connected to the air pump through an air supply pipe 603.
In this embodiment, the automatic pipe coiling machine 5 corresponding to the air supply pipe 603 and/or the slurry supply pipe 604 is arranged at the orifice of the pile hole.
To ensure the driving effect, the slurry supply pipe 604 and the gas supply pipe 603 are integrally formed or connected as a whole by means of sidewall adhesion.
At this time, the automatic pipe winding machine 5 synchronously drives the gas supply pipe 603 and the slurry supply pipe 604.
In an alternative embodiment, the grouting valve 3 is a three-way pipe correspondingly connected to the grouting pipe 1, the grouting pipe 1 is multi-section, the grouting pipes 1 at two adjacent ends are respectively connected to two ends of a main pipe of the grouting valve 3, and the grouting valve 3 can be connected with the grouting pipe 1 in a threaded connection or welding mode.
One of the pipes (the middle pipe perpendicular to the grouting pipe) of the three-way pipe extends along the radial direction of the reinforcement cage, and the end part of the middle pipe of the three-way pipe is provided with a non-return piece 7, and the non-return piece 7 is correspondingly sleeved on the elastic sleeve.
In some embodiments, the non-return element 7 is a bottle cap-shaped rubber element, the middle pipeline of the grout outlet valve 3 is sealed through deformation, and after the cement grout is pressurized, the non-return element 7 forms a channel for the grout to flow out through deformation, so that grouting is performed on the circumference of the pile body.
In order to increase the grouting range, an insertion pipe 4 is inserted in the middle of the non-return part 7, the insertion pipe 4 can extend into soil in the circumferential direction of the pile body under the action of pressure, specifically, one end of the insertion pipe 4 corresponding to the grouting valve 3 is an open end, the other end of the insertion pipe is a sharp sealing end, a perforation is formed in the inner wall of the insertion pipe 4, which is positioned at the part of the grouting valve 3 and is close to the end part of the non-return valve, after pile body concrete is poured, water is supplied by a grouting pump to open a plug, and in the process of opening the plug, the sharp end of the insertion pipe 4 extends outwards into the soil in the circumferential direction of the pile body through high-pressure water, and grouting is performed through the perforation at the side part of the insertion pipe 4, so that the grouting diffusion range and grouting effect are improved.
The penetrating pipe 4 is only an additional measure for increasing the grouting effect, the foundation grouting requirement that the penetrating pipe 4 does not affect the circumferential direction of the pile body is met, when geology is harder, or the pressure required by the non-return piece 7 is smaller than the pressure required by the penetrating pipe 4 for inserting soil, the non-return piece 7 can be opened, but the penetrating pipe 4 is not inserted into the soil at the periphery of the pile body, grouting is carried out only at the non-return piece 7 at the moment, and cement slurry passes through a thin layer of concrete between the inner wall of a pile hole and the non-return piece 7, so that the effect of grouting in the circumferential direction of the pile body can be achieved.
Therefore, in order to ensure that the penetrating pipe 4 can be inserted into the soil around the pile body as much as possible, the embodiment performs the plugging operation within 12-24 hours, preferably 18 hours, of pile body concrete pouring, at this time, the concrete has a certain strength, the pile body concrete after plugging is completed does not generate backflow to plug the plugging channel, so that the required pressure for plugging is larger, and the penetrating pipe 4 can be driven to be inserted into the soil along the radial direction as much as possible.
In this embodiment, the end of the non-return element 7 is provided with a mounting hole corresponding to the insertion tube 4, the mounting hole is in interference fit with the insertion tube 4, the inner side of the non-return element 7 is integrally formed with a rubber tube 701 corresponding to the insertion tube 4, and the rubber tube 701 extends axially along the non-return element 7, so that the concrete is ensured not to flow into the grout outlet valve 3 or the insertion tube 4 in the grouting process.
The outer diameter of the penetrating pipe 4 is not larger than two thirds of the inner diameter of the pipeline, which extends out of the grouting valve 3 along the radial direction, so that grouting can be performed through a gap between the penetrating pipe 4 and the grouting valve under the condition that the penetrating pipe 4 cannot extend out.
In an alternative embodiment, the closed end of the grout tube 604 is sealed in a removable manner by a plunger, whereby pile end grouting is possible, in this embodiment by grouting tube 1.
The lower end of the grouting pipe 1 is a sharp sealing end, after the reinforcement cage is sunk into the pile hole, the lower end of the grouting pipe 1 is inserted into soil at the bottom of the pile hole, a grouting opening is formed in the side part of the bottom part of the grouting pipe 1 inserted into the pile hole, and a rubber sleeve corresponding to the grouting opening is sleeved on the grouting pipe 1.
When grouting is performed through the grouting valve 6, the plunger may be opened, and the two balloons 601 are inflated to form grouting passages through the grouting pipe end and the grouting port.
Of course, the pressurizing pipe 602 may be provided with a manual control valve, and the manual control valve may be closed to raise only the upper balloon 601, and the cement slurry may be injected into the pile end.
In the implementation, the two control of the grouting amount and the grouting pressure are implemented, the grouting amount control is mainly used, and the grouting pressure control is auxiliary. When the pile ends are pressed, if the pressing amount of a certain pressing pipe 1 does not meet the requirement and the pressing pressure is very high, the cement amount which is not pressed in should be pressed in by other pile end pressing pipes 1 when the pressing cannot be continued;
the application also provides a bridge approach pile foundation distributed grouting method, grouting is performed by any grouting device, and the method comprises the following steps:
step S1, synchronously binding a grouting pipe 1 and a grouting valve 3 during reinforcement cage processing;
s2, after bottom cleaning is completed, the reinforcement cage is lowered to the bottom of the pile hole, and concrete is poured into the pile hole;
step S3, placing the slurry stop valve 6 into one of the grouting pipes 1, and enabling a slurry outlet in the middle of the slurry stop valve 6 to be opposite to one slurry outlet valve 3 at the lowest part of the grouting pipe 1;
step S4, air is supplied to the two sacculus 601, the two sacculus 601 are inflated and sealed at two sides of the corresponding grouting valve 3, grout is supplied into the grouting pipe, the grout outlet and the corresponding grouting valve 3 form a grouting channel, and grouting is carried out on the periphery of the pile hole;
and S5, grouting the grouting valves 3 sequentially from bottom to top, and grouting the next grouting pipe 1 after grouting operation of all the grouting valves 3 of one grouting pipe 1 is completed until grouting of all the grouting pipes 1 is completed.
In an alternative embodiment, in step S3, the grouting valve 3 is opened within 24h of concrete pouring, and when the grouting valve is opened, clean water is sequentially injected into the grouting valve 3 through the grouting stop valve 6, and after the water pressure is reduced, the grouting stop is closed, so that the grouting is completed.
In an alternative embodiment, pile integrity detection is performed through the sounding pipe 2 after the pile body concrete reaches 85% of the design strength, and the grouting amount corresponding to each grouting valve 3 is set according to the detection result.
In this embodiment, each sound tube 2 corresponds to one grouting tube 1, when step S1 is implemented, the sound tubes 2 are bound synchronously, the sound tubes 2 are tightly attached to the grouting tubes 1, in order to ensure the fixing strength, a connecting piece can be arranged on the reinforcement cage, and the connecting piece is provided with perforations corresponding to the grouting tubes 1 and the sound tubes 2 respectively, so that the relative positions of the two are limited, and the exploration capability of the sound tubes 2 to grouting areas is ensured.
In an alternative embodiment, if the grouting amount of one of the grouting valves 3 of the grouting pipe 1 does not meet the set requirement during grouting, the amount of the non-pressurized grouting liquid should be pressurized by the grouting pipe 1 at the upper side or the lower side thereof.
If the grouting pressure is lower than the normal value for a long time or the phenomena of ground grouting, surrounding pile hole grouting and the like occur, intermittent grouting can be adopted, and the intermittent time is preferably 30-60 min; the water-cement ratio can also be regulated down, or the grouting flow can be reduced, or additives such as accelerator and the like can be added.
If all grouting pipes 1 at the pile end are not opened, drilling the bottom of the sounding pipe 2 to a bearing layer, or taking a pile end coring hole as a grouting channel, wherein the grouting quantity can take a design value; the grouting pipe 1 can be buried again after the outside of the pile is drilled to be 20cm below the pile end elevation by 30cm for grouting, and the grouting amount is 120% of the design value.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the appended claims.
Claims (10)
1. The utility model provides a bridge approach pile foundation distributing type mud jacking device which characterized in that includes:
the grouting pipes are correspondingly distributed on the inner sides of the reinforcement cages and are uniformly distributed around the circumferences of the reinforcement cages;
the slurry outlet valves are uniformly distributed on the slurry pressing pipe and extend out of the outer circumferential surface of the reinforcement cage along the radial direction;
the grout stopping valve is correspondingly arranged in the grouting pipe and is assembled in a sliding way along the axial direction of the grouting pipe:
the grouting valve comprises a grouting pipe and a pressurizing pipe, one end of the grouting pipe is connected with a grouting pump through a grouting pipe, the other end of the grouting pipe is a closed end, a grouting outlet is formed in the middle of the grouting pipe, two ends of the grouting pipe are respectively sleeved with a balloon, the balloons at the two ends of the grouting pipe are connected in series through the pressurizing pipe, two balloons are respectively used for blocking two sides of one grouting valve, and accordingly the grouting pipe, the grouting outlet and the corresponding grouting valve form a grouting channel.
2. The bridge approach pile foundation distributed grouting device according to claim 1, wherein the balloon is of a cylindrical structure, two ends of the balloon are fixed on the grouting pipe through end plates respectively, two adjacent end plates of the balloon are communicated through the pressurizing pipe, and the balloon far away from the closed end of the grouting pipe is correspondingly connected to the air pump through an air supply pipe.
3. The bridge approach pile foundation distributed grouting device according to claim 2, wherein the slurry supply pipe and the gas supply pipe are integrally formed or connected into a whole by bonding.
4. The bridge approach pile foundation distributed grouting device according to claim 1, wherein the grouting valve is a three-way pipe correspondingly connected to the grouting pipe, one pipe of the three-way pipe extends along the radial direction of the reinforcement cage, a non-return piece is arranged at the end part of the middle pipe of the three-way pipe, and the non-return piece is correspondingly sleeved on an elastic sleeve.
5. The bridge approach pile distributed grouting device of claim 1, wherein the closed end of the grout supply pipe is detachably sealed by a plunger.
6. The bridge approach pile foundation distributed grouting device according to claim 1, wherein the lower end of the grouting pipe is a sharp sealing end, the lower end of the grouting pipe is inserted into the bottom of the pile hole, a grouting opening is formed in the side portion of the bottom portion of the grouting pipe inserted into the pile hole, and a rubber sleeve corresponding to the grouting opening is sleeved on the grouting pipe.
7. A method for grouting a bridge approach pile foundation in a distributed manner by using the grouting device as claimed in any one of claims 1 to 6, comprising the steps of:
step S1, synchronously binding a grouting pipe and a grouting valve during processing of a reinforcement cage;
s2, after bottom cleaning is completed, the reinforcement cage is lowered to the bottom of the pile hole, and concrete is poured into the pile hole;
step S3, placing the slurry stop valve into one of the grouting pipes, and enabling a slurry outlet in the middle of the slurry stop valve to be opposite to the lowest slurry outlet of the grouting pipe;
step S4, air is supplied to the two saccules, the two saccules rise and then seal the two sides of the corresponding grouting valve, grout is supplied into the grouting pipe, the grouting port and the corresponding grouting valve form a grouting channel, and grouting is carried out on the periphery of the pile hole;
and S5, grouting the grouting valves sequentially from bottom to top, and grouting the next grouting pipe after grouting operation of all the grouting valves of one grouting pipe is completed until grouting of all the grouting pipes is completed.
8. The distributed grouting method of bridge approach pile foundation according to claim 7, wherein in step S3, the grouting valve is opened within 24h of concrete pouring, clear water is sequentially injected into the grouting valve through the grouting stopping valve during the opening, and the water injection is stopped after the water pressure is reduced, so that the opening is completed.
9. The method for distributed grouting of bridge approach pile foundation according to claim 7, wherein the pile body integrity is detected by a sound tube after the pile body concrete reaches 85% of the design strength, and the corresponding grouting amount of each grouting valve is set according to the detection result.
10. The method for distributed grouting of bridge approach pile foundation according to claim 9, wherein if the grouting amount of one of the grouting valves of the grouting pipe does not meet the set requirement during grouting, the amount of the non-pressed grouting is pressed by the grouting pipe on the upper side or the lower side of the grouting pipe.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310784664.0A CN116856414A (en) | 2023-06-29 | 2023-06-29 | Bridge approach pile foundation distributed grouting device and method |
| GBGB2400923.5A GB202400923D0 (en) | 2023-06-29 | 2023-08-02 | Distributed pressure-grouting device and method for bridge approach pile foundation |
| PCT/CN2023/110673 WO2023237133A1 (en) | 2023-06-29 | 2023-08-02 | Distributed pressure-grouting device and method for bridge approach pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310784664.0A CN116856414A (en) | 2023-06-29 | 2023-06-29 | Bridge approach pile foundation distributed grouting device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116856414A true CN116856414A (en) | 2023-10-10 |
Family
ID=88224456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310784664.0A Pending CN116856414A (en) | 2023-06-29 | 2023-06-29 | Bridge approach pile foundation distributed grouting device and method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN116856414A (en) |
| GB (1) | GB202400923D0 (en) |
| WO (1) | WO2023237133A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6063714B2 (en) * | 2012-11-12 | 2017-01-18 | パナホーム株式会社 | Method for creating expandable steel pipe pile and pile structure |
| CN103866762A (en) * | 2014-04-01 | 2014-06-18 | 华东建筑设计研究院有限公司 | Pile body longitudinal multipoint grouting device |
| CN106013134B (en) * | 2016-07-18 | 2020-03-17 | 浙江水利水电学院 | Diameter-expanding concrete pipe pile, diameter-expanding device and diameter-expanding method |
| CN212582651U (en) * | 2020-04-28 | 2021-02-23 | 中国建筑第四工程局有限公司 | Split type closed slip casting device |
| CN111535302A (en) * | 2020-05-08 | 2020-08-14 | 东南大学 | Cast-in-place pile distributed pile side-rear grouting device, hydraulic grouting assembly and construction method |
| CN112459072A (en) * | 2020-12-15 | 2021-03-09 | 安徽省城建基础工程有限公司 | Layered grouting device and application thereof |
| CN115928737A (en) * | 2022-11-30 | 2023-04-07 | 广西容梧高速公路有限公司 | Construction method and system for eliminating mud skin weakening effect of pile wall joint |
-
2023
- 2023-06-29 CN CN202310784664.0A patent/CN116856414A/en active Pending
- 2023-08-02 WO PCT/CN2023/110673 patent/WO2023237133A1/en unknown
- 2023-08-02 GB GBGB2400923.5A patent/GB202400923D0/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB202400923D0 (en) | 2024-03-06 |
| WO2023237133A1 (en) | 2023-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213952192U (en) | High-efficient slip casting pipe is used to foundation engineering | |
| CN109138904B (en) | Double-packer layered grouting water stop device and use method thereof | |
| CN104234043B (en) | A kind of cast-in-place pile construction method | |
| CN116856414A (en) | Bridge approach pile foundation distributed grouting device and method | |
| CN205502044U (en) | Be applied to precipitation structure in grittiness water -bearing stratum under building | |
| CN111519604A (en) | Deep-hole sleeve valve pipe grouting device and application method thereof | |
| CN210049864U (en) | Packer grouting layered water stop simulation device | |
| CN204252139U (en) | Be applied to the two-layer equation film bagging apparatus of Grouting Pipe sealing in water burst sandy soils | |
| CN215804475U (en) | Sleeve valve pipe slip casting component and be used for hole sealing subassembly of rich water karst | |
| CN107816041B (en) | Non-dumping hole-forming prestressed anchor rod, anchor hole leakage-proof structure and construction method thereof | |
| CN210049045U (en) | Slurry leakage detector for sleeve grouting | |
| CN214573969U (en) | Tube-pulling type pre-embedding device for grouting of dam concrete joint | |
| CN1085981A (en) | Capsule sealing grouting and sealing device thereof | |
| CN109899024B (en) | Grouting construction method for water injection pressurization water expansion sealing perforated pipe | |
| CN113152467A (en) | Grouting method for easily collapsed stratum | |
| CN210141963U (en) | Drainage pipe water filling test device | |
| CN208039893U (en) | A kind of biliquid single system air pressure energy storage slip casting machine | |
| CN206418487U (en) | Water-filling band between a kind of stake | |
| CN116905500A (en) | Ring type grouting device and method for bridge approach pile foundation | |
| CN219261018U (en) | Grouting pipe for foundation reinforcement | |
| CN218935401U (en) | Grouting stop for filling pipe cement slurry | |
| CN212375851U (en) | Test pile load box inner crack grouting reinforcement coupling device | |
| CN215329904U (en) | Stratum grouting system | |
| CN217815424U (en) | Antiseep wall pipe device | |
| CN219621812U (en) | Pipe well plugging structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |