CN114393685A - Grouting method for T-shaped beam - Google Patents
Grouting method for T-shaped beam Download PDFInfo
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- CN114393685A CN114393685A CN202111680374.9A CN202111680374A CN114393685A CN 114393685 A CN114393685 A CN 114393685A CN 202111680374 A CN202111680374 A CN 202111680374A CN 114393685 A CN114393685 A CN 114393685A
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- grouting
- hole
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- sealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
Abstract
The invention provides a grouting method for a T-shaped beam, which comprises the following steps: installing a switching device, namely installing the switching device at the end part of a grouting hole of the T-shaped beam; cleaning a grouting flow channel, namely connecting a water source pipe and an air source pipe with a switching device to flush water flow and discharge air flow; penetrating a plurality of steel bars through the prestress testing main through holes by using a bundle penetrating machine and sealing by using a sealing cover plate; sealing the anchor, taking the putty and the curing agent, uniformly stirring, and smearing and sealing the gap between the sealing cover plate and the reinforcing steel bar hole; pressure grouting, namely connecting the grouting end of the grouting device with a switching device, and switching the grouting end of one grouting device to be communicated with the grouting hole by the switching device; negative suction drainage, connecting a negative suction device with the cover plate to perform negative suction; and end sealing, namely sealing the grouting holes and the end parts of the prestress testing main through holes. The invention is convenient for the slurry to safely and stably fill the grouting flow channel and meets the requirement of practical application.
Description
Technical Field
The invention relates to the technical field of T-beam construction, in particular to a grouting method for a T-beam.
Background
T-shaped beam refers to a beam with a T-shaped cross section. The two side-out portions are called flanges, and the middle portion is called a beam rib (or web). Since it is formed by excavating concrete in the tensile zone of the rectangular beam which does not contribute to the flexural strength. The bending strength of the concrete is completely the same as that of the original rectangle, but the concrete can be saved, the self weight of the member is reduced, and the spanning capability is improved. The existing T beam adopts the traditional grouting mode to carry out grouting, and as the grouting material is pure cement slurry, the resistance in the pore channel is larger during grouting, which is not beneficial to completely filling cement slurry.
The prior patent (application number: 202110414062.7) proposes a construction method of a prefabricated T-beam, which comprises the following steps: 1) construction preparation; 2) binding a T-beam reinforcement cage; 3) erecting a T-beam template; 4) t-beam concrete pouring; 5) the prestressed lacing wire penetrates through the hole; 6) closed mortar pressure injection; 7) and (5) performing prefabricated T-shaped beam maintenance. The method reduces the layout difficulty of the built-in guide ring; the positions of the template supporting plate and the T-beam template are limited by the template support frame, so that the mounting and positioning accuracy of the T-beam template is improved; the accuracy of installation and positioning of the tensioning jack is effectively improved, and the difficulty of on-site prestress tensioning construction is reduced. In addition, the compaction degree of the plugging mortar and the sleeve grouting body is controlled by the grouting pump body and the air pressure control pump, so that the construction quality of the plugging mortar and the sleeve grouting body can be effectively improved, and the difficulty of the maintenance construction of the prefabricated T-shaped beam is effectively reduced.
In the patent, the compaction degree of the plugging mortar and the sleeve grouting body is controlled by a grouting pump body and an air pressure control pump, so that the construction quality of the plugging mortar and the sleeve grouting body can be effectively improved; the difficulty of maintenance construction of the prefabricated T-shaped beam is effectively reduced, and the grouting flow channel is not conveniently filled with slurry safely and stably.
Disclosure of Invention
Based on this, the present invention is directed to a grouting method for a T-beam, so as to solve the technical problems in the background art.
The invention provides a grouting method for a T-shaped beam, which comprises the following steps:
step one, installing a switching device, namely installing the switching device at the end part of a grouting hole of a T beam;
step two, cleaning a grouting flow channel, namely connecting a water source pipe and a gas source pipe with a switching device, switching the water source pipe to be communicated with a grouting hole by the switching device to perform water flow cleaning on the grouting hole and a main prestress testing through hole communicated with the grouting hole, and switching the gas source pipe to be communicated with the grouting hole by the switching device after water flow cleaning to perform air flow drainage on the grouting hole and the main prestress testing through hole communicated with the grouting hole;
thirdly, penetrating the reinforcing steel bars through the main prestress testing through holes by using a penetrating machine, sealing the two ends of the T-shaped beam by using cover plates after penetrating, and penetrating the reinforcing steel bars by using the cover plates and clamping the inner walls of the main prestress testing through holes;
fourthly, sealing the anchor, namely uniformly stirring the atomic ash and the curing agent, smearing and sealing the uniformly stirred mixture to the gap between the cover plate and the reinforcing steel bar hole, and performing pressure grouting after the mixture is cured;
pressure grouting, namely connecting the grouting ends of the plurality of grouting devices with a switching device, and switching the grouting end of one grouting device to be communicated with the grouting hole by the switching device;
step six, negative suction and drainage, namely connecting a negative suction device with the cover plate to form negative pressure in the grouting hole and the prestress testing main through hole;
and seventhly, end sealing, namely sealing the grouting hole and the end part of the main prestress testing through hole after grouting is finished, and thus grouting can be finished.
Preferably, the switching device includes the base plate, locates the adapting unit of base plate one side is located the spout of base plate opposite side, with spout sliding connection's switching slide, wear to locate a plurality of honeycomb ducts of switching slide locate the honeycomb duct is kept away from the first flange limit of adapting unit one end, and locate base plate upper surface just is used for moving one of them honeycomb duct to the switching drive part that corresponds with adapting unit position. In the preferred embodiment, the switching device is conveniently connected with the water source pipe, the air source pipe and the grouting device so as to conveniently lead water, air or slurry to the grouting hole and the prestress testing main through hole.
Preferably, the connecting part comprises a threaded positioning pipe with one end communicated with the outer wall of the base plate and handles symmetrically arranged on two sides of the base plate. In the preferred embodiment, the stable connection with the injection hole is facilitated by the connecting member.
Preferably, the switching driving part comprises a through hole penetrating through the upper surface of the base plate, and a linear guide rail with two ends connected with the upper surface of the base plate through support pillars, and the execution end of the linear guide rail penetrates through the through hole and is connected with the switching sliding plate. In the preferred embodiment, one of the guide pipes is conveniently moved to the position corresponding to the connecting part by switching the driving part, so that the switching of water flow and air flow is realized during cleaning, the grouting device is conveniently switched during grouting, and the problem of grouting discontinuity is avoided.
Preferably, the outer wall of the cover plate is annularly aligned with a plurality of limiting friction blocks, the side wall of the cover plate is provided with an air hole and a plurality of reinforcing steel bar holes in a penetrating manner, the air hole is located at the center of the cover plate, and the plurality of reinforcing steel bar holes are annularly aligned. In the preferred embodiment, the cover plate is used for facilitating the fixation of the reinforcing steel bars and forming a gap between the reinforcing steel bars so as to facilitate air exhaust.
Preferably, the negative pressure suction device comprises a negative pressure tank, a vacuum pump arranged at the top of the negative pressure tank and communicated with the execution end of the negative pressure tank, and a transmission component arranged on the outer wall of the negative pressure tank and used for connecting the sealing cover plate. In the preferred embodiment, the negative pressure suction device is used for facilitating negative pressure suction on the grouting hole and the main prestress testing through hole so as to form negative pressure in the grouting hole and the main prestress testing through hole and facilitate slurry filling.
Preferably, the transmission component comprises an electromagnetic valve arranged on the outer wall of the negative pressure tank, a transmission pipe with one end connected with the electromagnetic valve, an external threaded pipe rotationally connected with the other end of the transmission pipe, and an internal threaded pipe arranged on the inner wall of the air hole. In the preferred embodiment, the stable connection of the underpressure can to the closing cap is facilitated by the transfer member.
Preferably, the grouting device includes grouting pump and secondary pressuring pipe, the secondary pressuring pipe lateral wall through the pipeline with the grouting pump is connected, secondary pressuring pipe one end be equipped with the second flange limit secondary pressuring part that the secondary pressuring pipe other end was equipped with the execution end and extends to in the secondary pressuring pipe, the secondary pressuring pipe is close to the lateral wall of second flange limit one end is equipped with pressure detection part. In the preferred embodiment, the slurry is conveniently introduced into the grouting hole through the grouting device.
Preferably, the secondary pressurizing part comprises a driving motor arranged on the outer wall of the secondary pressurizing pipe and a packing auger arranged at the execution end of the driving motor and positioned in the secondary pressurizing pipe. In the preferred embodiment, the secondary pressurization of the slurry being delivered is facilitated by the secondary pressurization component to facilitate slurry filling of the grout hole and pre-stress testing of the main through hole.
Preferably, the pressure detection component comprises a pressure measuring pipe, a pressure sensor and a pressure transmission plate, wherein the bottom of the pressure measuring pipe is communicated with the outer wall of the secondary pressurization pipe, the pressure sensor is arranged at the top of the inner wall of the pressure measuring pipe, and the pressure transmission plate is arranged at the bottom of the pressure sensor. In the preferred embodiment, the detection of the grouting pressure is facilitated by a pressure detection component.
Compared with the prior art, the invention has the beneficial effects that:
the grouting method for the T-shaped beam is convenient for safely and stably filling the grouting flow channel with the slurry;
the switching device is conveniently connected with the water source pipe, the air source pipe and the grouting device so as to conveniently lead water, gas or slurry to the grouting hole and the prestress testing main through hole, the switching device is conveniently and stably connected with the grouting hole through a connecting part, and one of the guide pipes is conveniently moved to correspond to the connecting part through the switching driving part so as to realize the switching of water flow and air flow during cleaning, so that the grouting device is conveniently switched during grouting, and the problem of discontinuous grouting operation is avoided;
the cover plate is convenient for fixing the steel bars so as to form a gap between the steel bars and exhaust air, the negative pressure suction device is convenient for performing negative pressure suction on the grouting hole and the main prestress testing through hole so as to form negative pressure in the grouting hole and the main prestress testing through hole so as to fill slurry, and the transmission part is convenient for stably connecting the negative pressure tank and the cover plate in the negative pressure suction device;
be convenient for through slip casting device to downthehole the letting in thick liquids of slip casting, be convenient for carry out the secondary pressurization to the thick liquids of carrying through secondary pressurization part in the slip casting device to the thick liquids are filled slip casting hole and main through-hole of prestressing force test, are convenient for detect grouting pressure through the pressure detection part.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention as set forth above.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a flow chart of a grouting method for a T-beam according to the present invention;
fig. 2 is an isometric view of the overall construction of the switching device of the present invention;
FIG. 3 is a sectional view showing the overall structure of the switching device of the present invention;
FIG. 4 is an isometric view of the overall construction of the negative pressure suction device of the present invention;
FIG. 5 is a structural isometric view of the closure panel of the present invention;
FIG. 6 is a sectional view showing the overall structure of the negative pressure suction device of the present invention;
FIG. 7 is an isometric view of the overall construction of the grouting device of the invention;
fig. 8 is a sectional view showing the overall structure of the grouting device of the present invention.
Description of the main symbols:
10. a switching device; 11. a base plate; 111. a chute; 12. a connecting member; 121. a threaded positioning tube; 122. a handle; 13. switching the sliding plate; 14. a flow guide pipe; 15. a first flanged edge; 16. a switching drive section; 161. a through hole; 162. a linear guide rail; 20. sealing the cover plate; 201. a limiting friction block; 202. air holes; 203. reinforcing steel bar holes; 30. a grouting device; 31. a mud jacking pump; 32. a secondary pressurization pipe; 33. a second flanged edge; 34. a secondary pressing member; 341. a drive motor; 342. a packing auger; 35. a pressure detecting member; 351. a piezometric tube; 352. a pressure sensor; 353. a pressure transmitting plate; 40. a negative pressure suction device; 41. a negative pressure tank; 42. a vacuum pump; 43. a transmission member; 431. an electromagnetic valve; 432. a conveying pipe; 433. an externally threaded tube; 434. an internally threaded tube.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 8, the present invention provides a grouting method for a T-beam, which includes the following steps:
step one, mounting a switching device, namely mounting the switching device 10 at the end part of a grouting hole of the T-shaped beam.
And step two, cleaning a grouting flow channel, namely connecting a water source pipe and a gas source pipe with a switching device 10, switching the water source pipe to be communicated with a grouting hole by the switching device 10 to perform water flow cleaning on the grouting hole and a main prestress testing through hole communicated with the grouting hole, and switching the gas source pipe to be communicated with the grouting hole by the switching device 10 after the water flow cleaning to perform air flow drainage on the grouting hole and the main prestress testing through hole communicated with the grouting hole.
Specifically, in this step, the switching device 10 includes a base plate 11, a connecting member 12 disposed on one side of the base plate 11, a slide groove 111 disposed on the other side of the base plate 11, a switching slide plate 13 slidably connected to the slide groove 111, a plurality of flow tubes 14 passing through the switching slide plate 13, a first flange 15 disposed on one end of the flow tube 14 away from the connecting member 12, and a switching driving member 16 disposed on the upper surface of the base plate 11 and configured to move one of the flow tubes 14 to a position corresponding to the connecting member 12.
In addition, the above-mentioned connecting part 12 includes a threaded positioning tube 121 having one end communicating with the outer wall of the base plate 11, and handles 122 symmetrically disposed on both sides of the base plate 11. The switching drive member 16 includes a through hole 161 formed through the upper surface of the base plate 11, and a linear guide 162 having both ends connected to the upper surface of the base plate 11 via support columns. The actuator end of the linear guide 162 penetrates the through hole 161 and is connected to the switching slider 13.
It should be noted that, in this embodiment, during grouting, the switching device 10 is installed at the end of the grouting hole of the T-beam, the water source pipe and the air source pipe are both connected to the switching device 10, and the switching device 10 switches the water source pipe to be communicated with the grouting hole, so as to perform water flow cleaning on the grouting hole and the main through hole for prestress testing communicated with the grouting hole. After the water flow cleaning, the switching device 10 switches the air source pipe to be communicated with the grouting hole so as to perform air flow drainage on the grouting hole and the prestress testing main through hole communicated with the grouting hole.
Further, when the switching device 10 is installed, the threaded positioning tube 121 is placed at the end of the grouting hole, the handle 122 is held by hand and the base plate 11 is rotated, so that the threaded positioning tube 121 is screwed into the grouting hole, and fixation can be completed. Then, the water source pipe and the air source pipe are respectively connected with the first flange edge 15, and then the connection of the water source and the air source can be completed.
Further, when the switching driving member 16 is in operation, the linear guide 162 drives the switching sliding plate 13 to move, so that one of the fluid guide tubes 14 is communicated with the threaded positioning tube 121.
And thirdly, penetrating the reinforcing steel bars into the prestress testing main through hole by using a penetrating machine, sealing the two ends of the T beam by using the sealing cover plates 20 after the penetrating is finished, and penetrating the reinforcing steel bars by using the sealing cover plates 20 and clamping the inner walls of the prestress testing main through hole.
In this step, the outer wall of the cover plate 20 is annularly aligned with a plurality of limit friction blocks 201. The side wall of the cover plate 20 is provided with an air hole 202 and a plurality of reinforcement holes 203, the air hole 202 is located at the center of the cover plate 20, and the reinforcement holes 203 are distributed in an annular array.
And step four, sealing the anchor, namely uniformly stirring the atomic ash and the curing agent, smearing and sealing the uniformly stirred mixture to the gap between the cover plate (20) and the reinforcing steel bar hole (203), and performing pressure grouting after the mixture is cured.
It is also necessary to perform an anchoring operation on the surface of the capping plate 20 before performing the pressure grouting operation. In the traditional method, high-strength mortar is manually smeared on exposed prestressed ribs to be manufactured into a mushroom head shape so as to plug the cover sealing plate 20, so that the effect of sealing and pressure maintaining is achieved. However, the mortar is pressed after the mortar reaches at least 12 hours to form strength, which undoubtedly restricts the construction progress.
Aiming at the technical problem, the invention adopts a novel material to carry out the anchor sealing operation. Specifically, taking out a proper amount of atomic ash, adding a curing agent, mixing the atomic ash and the curing agent according to a mass ratio of 100: 2, and then stirring the mixed atomic ash and the curing agent until the mixture is uniform; the prepared putty is applied to the gap between the cover plate 20 and the reinforcing steel bar hole 203 by using a scraper.
It should be noted that the curing agent generally includes a polyamide-based curing agent, an aliphatic amine-based curing agent, and an aromatic amine-based curing agent. In this embodiment, the aliphatic amine curing agent and the putty are mixed and stirred to achieve the effect of fast curing.
The method has the following advantages:
(1) the curing agent is added into the putty, so that the curing speed is very high, and the pore canal grouting operation can be carried out after 1 hour, so that the construction efficiency is greatly improved;
(2) the gaps between the sealing cover plate 20 and the reinforcing steel bar holes 203 are sealed by using the atomic ash, and the holes of the steel strands in the reinforcing steel bar holes 203 are not sealed, so that the air outlet and slurry drainage effects are quite obvious during grouting, and the grouting quality is improved;
(3) if a traditional mode is adopted, after grouting is finished, the mushroom head needs to be chiseled, however, steel strands and clamping pieces are easily disturbed in the chiseling process, and the prestress quality is further influenced. By adopting the method provided by the embodiment, the atomic ash is less than 1cm in thickness, so chiseling is not needed, and the combination effect on the continuous cast-in-place concrete of the bridge deck in the later period is good.
And step five, pressure grouting, wherein the grouting ends of the plurality of grouting devices 30 are connected with the switching device 10, and the switching device 10 switches the grouting end of one grouting device 30 to be communicated with the grouting hole.
Specifically, in this step, the grouting device 30 includes a grouting pump 31 and a secondary pressurizing pipe 32. Wherein, the lateral wall of secondary pressure pipe 32 is connected with the fan pump 31 through the pipeline, and the one end of secondary pressure pipe 32 is equipped with second flange limit 33, and the other end of secondary pressure pipe 32 is equipped with the secondary pressure part 34 that the execution end extends to in the secondary pressure pipe 32, and the lateral wall that secondary pressure pipe 32 is close to second flange limit 33 one end is equipped with pressure detection part 35.
The secondary pressurizing member 34 includes a driving motor 341 provided on the outer wall of the secondary pressurizing pipe 32, and an auger 342 provided at the execution end of the driving motor 341 and located in the secondary pressurizing pipe 32.
In this embodiment, the pressure detecting unit 35 includes a pressure measuring pipe 351 having a bottom communicating with an outer wall of the secondary pressure pipe 32, a pressure sensor 352 provided on a top of an inner wall of the pressure measuring pipe 351, and a pressure transmitting plate 353 provided on a bottom of the pressure sensor 352.
It should be noted that, in this embodiment, a corrugated pipe may be disposed in the main through hole for pre-stress test, so as to facilitate the flow of the slurry.
After cleaning, a plurality of steel bars penetrate through the prestress testing main through hole by using a bundle penetrating machine, and after the bundle penetrating is finished, the two ends of the T-shaped beam are sealed by using the sealing cover plates 20. Specifically, when the actual capping is performed, the plurality of reinforcing bars respectively penetrate through the reinforcing bar holes 203, so that gaps are formed between the reinforcing bars to facilitate air exhaust. In addition, the limiting friction block 201 is clamped on the inner wall of the main prestress testing through hole to complete the fixation of the sealing cover plate 20.
The grouting ends of the plurality of grouting devices 30 are connected with the switching device 10, and the switching device 10 switches the grouting end of one grouting device 30 to be communicated with the grouting hole, so that grouting can be started. The switching device 10 can switch the grouting device 30 during grouting, so that the problem that grouting is interrupted due to the fact that the grouting device 30 in a working state stops working is avoided.
Further, when the grouting device 30 is connected to the switching device 10, the second flange 33 may be connected to the first flange 15 by screws. When grouting is performed, the stirred slurry is introduced into the grouting pump 31, and the grouting pump 31 provides slurry transmission power to enable the slurry to enter the secondary pressurizing pipe 32, the grouting hole and the main prestress testing through hole through the pipeline.
When the secondary pressurizing part 34 works, the execution end of the driving motor 341 drives the packing auger 342 to rotate, and the packing auger 342 carries out secondary extrusion on the slurry so as to enable the slurry to enter the grouting hole. Further, the slurry in the secondary pressurization pipe 32 will press the pressure transmission plate 353, the pressure sensor 352 will generate pressure data and transmit the data to the controller, and the controller will monitor the grouting pressure.
And step six, negative suction and drainage, namely connecting the negative suction device 40 with the cover plate 20 to form negative pressure in the grouting holes and the prestress testing main through holes.
In this step, the negative pressure suction device 40 includes a negative pressure tank 41, a vacuum pump 42 disposed on the top of the negative pressure tank 41 and having an execution end communicated with the negative pressure tank 41, and a transmission member 43 disposed on the outer wall of the negative pressure tank 41 and connected to the sealing cover plate 20.
Specifically, the transmission member 43 includes a solenoid valve 431 disposed on the outer wall of the negative pressure tank 41, a transmission pipe 432 having one end connected to the solenoid valve 431, an externally threaded pipe 433 rotatably connected to the other end of the transmission pipe 432, and an internally threaded pipe 434 disposed on the inner wall of the air hole 202.
In the present embodiment, during grouting, the negative pressure suction device 40 is connected to the cover plate 20 to form negative pressure in the grouting hole and the main pre-stress test through hole, and after grouting is completed, the ends of the grouting hole and the main pre-stress test through hole are sealed with cement, so that grouting operation is completed.
Further, when the negative pressure suction device 40 is operated, the external threaded pipe 433 is threadedly connected to the internal threaded pipe 434 to complete the connection between the negative pressure tank 41 and the cover plate 20, and at this time, the vacuum pump 42 is operated to generate negative pressure in the negative pressure tank 41, and the electromagnetic valve 431 is opened, so that the negative pressure tank 41 can perform negative pressure suction through the transmission pipe 432.
And seventhly, end sealing, namely sealing the grouting hole and the end part of the main prestress testing through hole after grouting is finished, and finishing grouting operation.
The specific process of the invention is as follows:
the controller model is '6 ES7214-2AD23-0XB 8', and the pressure sensor 352 model is 'NF 102'.
When grouting is carried out, firstly installing a switching device 10 at the end part of a grouting hole of a T-shaped beam, connecting a water source pipe and a gas source pipe with the switching device 10, switching the water source pipe to be communicated with the grouting hole by the switching device 10 to carry out water flow cleaning on the grouting hole and a main prestress testing through hole communicated with the grouting hole, and switching the gas source pipe to be communicated with the grouting hole by the switching device 10 after the water flow cleaning so as to carry out air flow drainage on the grouting hole and the main prestress testing through hole communicated with the grouting hole;
when the switching device 10 is installed, the threaded positioning pipe 121 is placed at the end part of the grouting hole, the handle 122 is held by hand and the base plate 11 is rotated, so that the threaded positioning pipe 121 is screwed into the grouting hole to complete fixation, and the water source pipe and the air source pipe are respectively connected with the first flange edge 15 to complete connection of a water source and an air source;
when the switching driving part 16 works, the linear guide rail 162 drives the switching sliding plate 13 to move, so that one of the guide pipes 14 is communicated with the thread positioning pipe 121;
a corrugated pipe can be arranged in the prestress testing main through hole so as to facilitate the flow of slurry;
penetrating a plurality of steel bars through the prestress testing main through holes by using a strand penetrating machine after cleaning is finished, and sealing two ends of the T-shaped beam by using sealing cover plates 20 after the strand penetrating is finished; during actual capping, a plurality of steel bars respectively penetrate through the steel bar holes 203, so that gaps are formed among the steel bars to facilitate air exhaust, and the limiting friction block 201 is clamped on the inner wall of the prestress testing main through hole to complete the fixation of the capping plate 20;
uniformly stirring the atomic ash and the curing agent, smearing and sealing the uniformly stirred mixture to the gap between the cover plate 20 and the reinforcing steel bar hole 203, and performing pressure grouting after the mixture is cured;
the grouting ends of the plurality of grouting devices 30 are connected with the switching device 10, the switching device 10 switches the grouting end of one grouting device 30 to be communicated with the grouting hole, grouting can be started, the switching device 10 can switch the grouting devices 30 during grouting, and grouting interruption caused by stopping the operation of the grouting devices 30 in a working state is avoided;
when the grouting device 30 is connected with the switching device 10, the second flange edge 33 is connected with the first flange edge 15 through screws;
when grouting is performed, the stirred slurry is introduced into the grouting pump 31, and the grouting pump 31 provides slurry transmission power to enable the slurry to enter the secondary pressurizing pipe 32, the grouting hole and the prestress testing main through hole through the pipeline;
when the secondary pressurizing part 34 works, the execution end of the driving motor 341 drives the packing auger 342 to rotate, and the packing auger 342 carries out secondary extrusion on the slurry so as to enable the slurry to enter the grouting hole; the slurry in the secondary pressurization pipe 32 extrudes the pressure transmission plate 353, the pressure sensor 352 generates pressure data and transmits the pressure data to the controller, and the controller monitors grouting pressure;
during grouting, the negative pressure suction device 40 is connected with the cover plate 20 to form negative pressure in the grouting holes and the main prestress testing through holes, and after grouting is finished, cement sealing is carried out on the ends of the grouting holes and the main prestress testing through holes, so that grouting can be finished;
when the negative pressure suction device 40 is operated, the external thread pipe 433 is screwed with the internal thread pipe 434 to complete the connection between the negative pressure tank 41 and the cover plate 20, at this time, the vacuum pump 42 starts to operate to form negative pressure in the negative pressure tank 41, the electromagnetic valve 431 is opened, and the negative pressure tank 41 can perform negative pressure suction through the transmission pipe 432.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A grouting method for a T-beam, characterized by comprising the following steps:
step one, mounting a switching device, namely mounting the switching device (10) at the end part of a grouting hole of a T-shaped beam;
step two, cleaning a grouting flow channel, namely connecting a water source pipe and a gas source pipe with a switching device (10), switching the water source pipe to be communicated with a grouting hole by the switching device (10) to perform water flow cleaning on the grouting hole and a main prestress testing through hole communicated with the grouting hole, and switching the gas source pipe to be communicated with the grouting hole by the switching device (10) after water flow cleaning to perform air flow drainage on the grouting hole and the main prestress testing through hole communicated with the grouting hole;
thirdly, penetrating the reinforcing steel bars through the main prestress testing through hole by using a penetrating machine, sealing the two ends of the T beam by using a sealing cover plate (20) after penetrating, and penetrating the reinforcing steel bars through the sealing cover plate (20) and clamping the inner wall of the main prestress testing through hole;
fourthly, sealing the anchor, namely uniformly stirring the atomic ash and the curing agent, smearing and sealing the uniformly stirred mixture to the gap between the cover plate (20) and the reinforcing steel bar hole (203), and performing pressure grouting after the mixture is cured;
fifthly, pressure grouting is carried out, grouting ends of the plurality of grouting devices (30) are connected with the switching device (10), and the switching device (10) switches the grouting end of one grouting device (30) to be communicated with the grouting hole;
step six, negative suction drainage, namely connecting a negative suction device (40) with the cover plate (20) to form negative pressure in the grouting hole and the prestress testing main through hole;
and seventhly, end sealing, namely sealing the grouting hole and the end part of the main prestress testing through hole after grouting is finished, and finishing grouting operation.
2. The grouting method for a T-beam according to claim 1, characterized in that the switching device (10) comprises a base plate (11), a connecting member (12) arranged on one side of the base plate (11), a chute (111) arranged on the other side of the base plate (11), a switching slide plate (13) slidably connected with the chute (111), a plurality of guide pipes (14) arranged on the switching slide plate (13), a first flange (15) arranged on one end of the guide pipe (14) far away from the connecting member (12), and a switching driving member (16) arranged on the upper surface of the base plate (11) and used for moving one of the guide pipes (14) to a position corresponding to the connecting member (12).
3. The grouting method for the T-beam as claimed in claim 2, wherein the connecting part (12) comprises a threaded positioning pipe (121) with one end communicated with the outer wall of the base plate (11) and handles (122) symmetrically arranged at two sides of the base plate (11).
4. The grouting method for a T-beam according to claim 2, characterized in that the switching driving part (16) comprises a through hole (161) penetrating through the upper surface of the base plate (11), and a linear guide (162) having both ends connected to the upper surface of the base plate (11) through supporting columns, and the execution end of the linear guide (162) penetrates through the through hole (161) and is connected to the switching slider (13).
5. The grouting method for the T-shaped beam as claimed in claim 1, wherein the outer wall of the cover plate (20) is annularly aligned with a plurality of limiting friction blocks (201), the side wall of the cover plate (20) is provided with a plurality of air holes (202) and a plurality of reinforcing steel bar holes (203), the air holes (202) are located at the center of the cover plate (20), and the plurality of reinforcing steel bar holes (203) are annularly aligned.
6. The grouting method for a T-beam according to claim 5, characterized in that the negative pressure suction device (40) comprises a negative pressure tank (41), a vacuum pump (42) arranged at the top of the negative pressure tank (41) and having an execution end communicated with the negative pressure tank (41), and a transmission part (43) arranged on the outer wall of the negative pressure tank (41) and used for connecting a cover sealing plate (20).
7. The grouting method for a T-beam according to claim 6, wherein the transmission member (43) comprises a solenoid valve (431) disposed on the outer wall of the negative pressure tank (41), a transmission pipe (432) having one end connected to the solenoid valve (431), an external threaded pipe (433) rotatably connected to the other end of the transmission pipe (432), and an internal threaded pipe (434) disposed on the inner wall of the air hole (202).
8. The grouting method for the T-beam as claimed in claim 1, wherein the grouting device (30) comprises a grouting pump (31) and a secondary pressure pipe (32), the side wall of the secondary pressure pipe (32) is connected with the grouting pump (31) through a pipeline, one end of the secondary pressure pipe (32) is provided with a second flange edge (33), the other end of the secondary pressure pipe (32) is provided with a secondary pressure component (34) with an execution end extending into the secondary pressure pipe (32), and the side wall of the secondary pressure pipe (32) close to one end of the second flange edge (33) is provided with a pressure detection component (35).
9. The grouting method for the T-beam as claimed in claim 8, wherein the secondary pressing part (34) comprises a driving motor (341) arranged on the outer wall of the secondary pressing pipe (32), and an auger (342) arranged at the execution end of the driving motor (341) and positioned in the secondary pressing pipe (32).
10. The grouting method for the T-beam according to claim 8, wherein the pressure detection part (35) comprises a pressure measuring pipe (351) with the bottom communicated with the outer wall of the secondary pressure pipe (32), a pressure sensor (352) arranged at the top of the inner wall of the pressure measuring pipe (351), and a pressure transmitting plate (353) arranged at the bottom of the pressure sensor (352).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680374.9A CN114393685A (en) | 2021-12-31 | 2021-12-31 | Grouting method for T-shaped beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680374.9A CN114393685A (en) | 2021-12-31 | 2021-12-31 | Grouting method for T-shaped beam |
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| CN114393685A true CN114393685A (en) | 2022-04-26 |
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| CN202111680374.9A Pending CN114393685A (en) | 2021-12-31 | 2021-12-31 | Grouting method for T-shaped beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115156777A (en) * | 2022-08-30 | 2022-10-11 | 中铁山桥(南通)有限公司 | Locking device for welding pre-deformation of steel box girder plate unit |
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| CN111749467A (en) * | 2020-06-29 | 2020-10-09 | 中冶天工集团有限公司 | Jacking device for steel pipe concrete and construction method thereof |
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