CN114393685B - Grouting method for T beam - Google Patents
Grouting method for T beam Download PDFInfo
- Publication number
- CN114393685B CN114393685B CN202111680374.9A CN202111680374A CN114393685B CN 114393685 B CN114393685 B CN 114393685B CN 202111680374 A CN202111680374 A CN 202111680374A CN 114393685 B CN114393685 B CN 114393685B
- Authority
- CN
- China
- Prior art keywords
- grouting
- pipe
- hole
- switching device
- holes
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 238000012360 testing method Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 230000000149 penetrating effect Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012258 stirred mixture Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 abstract description 29
- 238000009434 installation Methods 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 33
- 238000010276 construction Methods 0.000 description 11
- 239000004570 mortar (masonry) Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009662 stress testing Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a grouting method for a T beam, which comprises the following steps: the installation of the switching device is carried out, and the switching device is installed at the end part of the grouting hole of the T beam; the grouting flow channel is cleaned, and a water source pipe and an air source pipe are connected with a switching device to perform water flow flushing and air flow drainage; penetrating the steel bars, penetrating the plurality of steel bars through the prestress testing main through holes by using a penetrating machine, and sealing by using a sealing plate; the anchor is sealed, the putty and the curing agent are taken and stirred uniformly, and gaps between the sealing cover plate and the reinforcing steel bar holes are smeared and sealed; the grouting end of the grouting device is connected with a switching device, and the switching device switches the grouting end of one grouting device to be communicated with the grouting hole; negative suction drainage, wherein a negative suction device is connected with the cover plate to perform negative suction; and sealing the end parts of the grouting holes and the prestressed test main through holes. The invention is convenient for the slurry to safely and stably fill the grouting flow channel, and meets the actual application requirements.
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-beam refers to a beam with a T-shaped cross-section. The two side pickups are referred to as flanges and the middle portion is referred to as a rib (or web). As it is equivalent to the formation of a rectangular beam in which the tensile zone concrete that does not contribute to the bending strength is excavated. The bending strength is completely the same as that of the original rectangle, but not only can save concrete, but also can lighten the dead weight of the component and improve the spanning capability. The traditional grouting mode is adopted for grouting the existing T beam, and as grouting materials are pure cement slurry, the resistance in a pore canal is large during grouting, and the grouting is not beneficial to complete filling of cement slurry.
The prior patent (application number: 202110414062.7) proposes a construction method of a prefabricated T beam, which comprises the following steps: 1) Preparing construction; 2) Binding a T beam reinforcement cage; 3) A T beam template is supported; 4) Pouring T beam concrete; 5) The prestress lacing wire is penetrated; 6) Sealing mortar for pressing and injecting; 7) Prefabricated T Liang Yanghu. The method reduces the difficulty of arranging the built-in guide ring; the positions of the template supporting plate and the T-beam template are limited through the template supporting frame, so that the accuracy of mounting and positioning 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 compactness of the plugging mortar and the sleeve grouting body is controlled by adopting 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 precast T beam maintenance construction can be effectively reduced.
In the patent, the compaction degree of the plugging mortar and the sleeve grouting body is controlled by adopting 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; the difficulty of precast T beam maintenance construction is effectively reduced, but the grouting runner is not convenient for the safe and stable filling of the slurry.
Disclosure of Invention
Based on the above, the present invention is directed to a grouting method for a T-beam, which is used for solving the technical problems set forth in the above-mentioned background art.
The invention provides a grouting method for a T beam, which comprises the following steps of:
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 runner, namely connecting a water source pipe and an air source pipe with a switching device, switching the water source pipe to be communicated with a grouting hole by the switching device so as to clean the grouting hole and a pre-stress test main through hole communicated with the grouting hole in a water flow mode, and switching the air source pipe to be communicated with the grouting hole by the switching device after cleaning the water flow so as to drain the grouting hole and the pre-stress test main through hole communicated with the grouting hole in an air flow mode;
Penetrating the steel bars into the prestress testing main through hole by using a penetrating machine, covering the two ends of the T beam by using a cover plate after the penetrating is finished, penetrating the steel bars by using the cover plate, and clamping the inner wall of the prestress testing main through hole;
Fourthly, sealing the anchor, uniformly stirring the putty and the curing agent, smearing and sealing gaps between the sealing cover plate and the steel bar holes by the uniformly stirred mixture, and performing pressure grouting after the mixture is cured;
step five, pressure grouting, namely connecting grouting ends of a plurality of grouting devices with a switching device, and switching the grouting end of one grouting device to be communicated with a grouting hole by the switching device;
step six, negative suction 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, sealing the end, and sealing the grouting holes and the end parts of the prestress testing main through holes after grouting is completed, so that grouting can be completed.
Preferably, the switching device comprises a base plate, a connecting part arranged on one side of the base plate, a chute arranged on the other side of the base plate, a switching slide plate in sliding connection with the chute, a plurality of flow guide pipes penetrating through the switching slide plate, a first flange edge arranged on one end of the flow guide pipe away from the connecting part, and a switching driving part arranged on the upper surface of the base plate and used for moving one of the flow guide pipes to a position corresponding to the connecting part. In the preferred embodiment, the switching device is conveniently connected to the water source tube, the air source tube and the grouting device so as to facilitate the introduction of water, air or slurry into the grouting holes and the pre-stress test main through holes.
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 present preferred embodiment, stable connection with the grouting holes is facilitated by the connection member.
Preferably, the switching driving part comprises a through hole penetrating through the upper surface of the base plate and linear guide rails with two ends connected with the upper surface of the base plate through support columns, and the execution end of each linear guide rail penetrates through the through hole to be connected with the switching sliding plate. In the preferred embodiment, the driving part is switched to facilitate moving one of the guide pipes to correspond to the position of the connecting part, so that the water flow and the air flow can be switched during cleaning, the grouting device can be switched during grouting, and the problem of grouting interruption is avoided.
Preferably, the sealing cover plate outer wall is provided with a plurality of limit friction blocks in an annular array, the side wall of the sealing cover plate is provided with air holes and a plurality of reinforcing steel bar holes in a penetrating mode, the air holes are located at the center of the sealing cover plate, and the reinforcing steel bar holes are distributed in an annular array. In the preferred embodiment, the fixation of the rebars is facilitated by the cover plate, and the formation of gaps between the rebars is facilitated to facilitate venting.
Preferably, the negative pressure suction device comprises a negative pressure tank, a vacuum pump arranged at the top of the negative pressure tank and the execution end of the vacuum pump is communicated with the negative pressure tank, and a transmission component arranged on the outer wall of the negative pressure tank and used for connecting a cover plate. In the preferred embodiment, the grouting holes and the pre-stress test main through holes are conveniently subjected to negative pressure suction through the negative pressure suction device so as to form negative pressure in the grouting holes and the pre-stress test main through holes, so that slurry is conveniently filled.
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 thread pipe rotationally connected with the other end of the transmission pipe, and an internal thread pipe arranged on the inner wall of the air hole. In the preferred embodiment, the stable connection of the suction canister to the closure plate is facilitated by the transfer member.
Preferably, the grouting device comprises a grouting pump and a secondary pressurizing pipe, the side wall of the secondary pressurizing pipe is connected with the grouting pump through a pipeline, one end of the secondary pressurizing pipe is provided with a second flange edge, the other end of the secondary pressurizing pipe is provided with a secondary pressurizing component, the execution end of the secondary pressurizing component extends into the secondary pressurizing pipe, and the side wall, close to one end of the second flange edge, of the secondary pressurizing pipe is provided with a pressure detecting component. In the preferred embodiment, the grouting material is conveniently introduced into the grouting holes through a grouting device.
Preferably, the secondary pressurizing component comprises a driving motor arranged on the outer wall of the secondary pressurizing pipe and an auger arranged at the executing end of the driving motor and positioned in the secondary pressurizing pipe. In the preferred embodiment, the secondary pressurizing means is used to facilitate the secondary pressurizing of the slurry to be fed, so that the slurry fills the grouting holes and the pre-stress test main through holes.
Preferably, the pressure detection component comprises a pressure measuring pipe, a pressure sensor and a pressure transmitting plate, wherein the bottom of the pressure measuring pipe is communicated with the outer wall of the secondary pressurizing pipe, the pressure sensor is arranged at the top of the inner wall of the pressure measuring pipe, and the pressure transmitting plate is arranged at the bottom of the pressure sensor. In the present preferred embodiment, the detection of the grouting pressure is facilitated by the pressure detecting means.
Compared with the prior art, the invention has the beneficial effects that:
the grouting method for the T beam is convenient for slurry to safely and stably fill the grouting flow channel;
the switching device is convenient to connect with the water source pipe, the air source pipe and the grouting device so as to conveniently introduce water, air or slurry into the grouting hole and the prestress testing main through hole, the switching device is convenient to stably connect with the grouting hole through the connecting part, one of the guide pipes is convenient to move to correspond to the position of the connecting part through the switching driving part, so that the water flow and the air flow can be conveniently switched during cleaning, the grouting device can be conveniently switched during grouting, and the problem of intermittent grouting operation is avoided;
The sealing cover plate is convenient for fixing the reinforcing steel bars, so that gaps are formed between the reinforcing steel bars, exhaust is facilitated, negative pressure suction is facilitated to the grouting holes and the prestress test main through holes through the negative pressure suction device, negative pressure is formed in the grouting holes and the prestress test main through holes, slurry filling is facilitated, and stable connection of the negative pressure tank and the sealing cover plate is facilitated through the transmission component in the negative pressure suction device;
The grouting device is convenient for introduce slurry into the grouting hole, the grouting device is convenient for secondarily pressurizing the conveyed slurry through the secondary pressurizing component, so that the slurry fills the grouting hole and the main pre-stress testing through hole, and the grouting pressure is convenient to detect through the pressure detecting component.
Additional features and advantages of the invention will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the above objects, features and advantages of the present invention more 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 structure of the switching device of the present invention;
FIG. 3 is a cross-sectional view of the overall structure of the switching device of the present invention;
FIG. 4 is an isometric view of the overall structure of the negative pressure suction device of the present invention;
FIG. 5 is an isometric view of the structure of the closure plate of the present invention;
fig. 6 is a cross-sectional view showing the overall structure of the negative pressure suction apparatus of the present invention;
FIG. 7 is an isometric view of the overall construction of the grouting apparatus of the present invention;
Fig. 8 is a cross-sectional view showing the overall structure of the grouting apparatus of the present invention.
Main symbol description:
10. A switching device; 11. a base plate; 111. a chute; 12. a connecting member; 121. a threaded positioning tube; 122. a handle; 13. a switching slide plate; 14. a flow guiding pipe; 15. a first flange edge; 16. a switching drive section; 161. a through hole; 162. a linear guide rail; 20. a cover plate; 201. a limit friction block; 202. air holes; 203. a reinforcing bar hole; 30. a grouting device; 31. a grouting pump; 32. a secondary pressurizing pipe; 33. a second flange edge; 34. a secondary pressurizing member; 341. a driving motor; 342. an auger; 35. a pressure detecting section; 351. a pressure measuring tube; 352. a pressure sensor; 353. a pressure transmitting plate; 40. negative pressure suction means; 41. a negative pressure tank; 42. a vacuum pump; 43. a transmission member; 431. an electromagnetic valve; 432. a transmission tube; 433. an external threaded tube; 434. an internally threaded tube.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended 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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein 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, the method 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 beam.
Step two, cleaning the grouting flow channel, namely connecting a water source pipe and an air source pipe with a switching device 10, switching the water source pipe to be communicated with the grouting hole by the switching device 10 so as to clean the grouting hole and a pre-stress test main through hole communicated with the grouting hole, and switching the air source pipe to be communicated with the grouting hole by the switching device 10 after cleaning the water flow so as to drain the grouting hole and the pre-stress test main through hole communicated with the grouting hole by air flow.
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 chute 111 disposed on the other side of the base plate 11, a switching slide plate 13 slidably connected to the chute 111, a plurality of flow guide pipes 14 penetrating the switching slide plate 13, a first flange 15 disposed on one end of the flow guide pipe 14 away from the connecting member 12, and a switching driving member 16 disposed on the upper surface of the base plate 11 for moving one of the flow guide pipes 14 to a position corresponding to the connecting member 12.
In addition, the connecting member 12 includes a screw positioning tube 121 having one end connected to the outer wall of the base plate 11, and handles 122 symmetrically provided at both sides of the base plate 11. The switching driving member 16 includes a through hole 161 penetrating the upper surface of the base plate 11, and a linear rail 162 having both ends connected to the upper surface of the base plate 11 via support columns. The switching slide 13 is connected to the execution end of the linear guide 162 through the through hole 161.
In this embodiment, when grouting is performed, 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 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 pre-stress test main through hole communicated with the grouting hole. After the water flow is cleaned, 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 screw 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 screw positioning tube 121 is screwed into the grouting hole, and the fixation can be completed. Then, the water source pipe and the air source pipe are respectively connected with the first flange edge 15, so that the connection of the water source and the air source can be completed.
Further, when the switching driving part 16 is operated, the linear guide rail 162 drives the switching slide plate 13 to move, so that one of the guide pipes 14 is communicated with the threaded positioning pipe 121.
And thirdly, penetrating the steel bars into the prestress testing main through holes by using a penetrating machine, sealing the two ends of the T-beam by using sealing cover plates 20 after the penetrating, penetrating the steel bars by using the sealing cover plates 20, and clamping the inner walls of the prestress testing main through holes.
In this step, the outer wall of the cover plate 20 is annularly lined with a plurality of stopper friction blocks 201. The side wall of the cover plate 20 is perforated with air holes 202 and a plurality of reinforcing steel bar holes 203, the air holes 202 are positioned at the center of the cover plate 20, and a plurality of reinforcing steel bar holes 203 are distributed in an annular array.
And fourthly, sealing the anchor, uniformly stirring the putty and the curing agent, smearing and sealing gaps between the sealing cover plate (20) and the reinforcing steel bar holes (203) by the uniformly stirred mixture, and performing pressure grouting after the mixture is cured.
An anchor sealing operation is also required for the surface of the cover plate 20 before the pressure grouting operation is performed. The traditional method is to manually smear the exposed prestressed tendons with high-strength mortar into a mushroom head shape so as to seal the cover plate 20, thereby achieving the effect of sealing and pressure maintaining. However, the mortar should be formed to have strength at least for 12 hours before grouting, which clearly restricts the construction progress.
In order to solve the technical problem, in the invention, a novel material is adopted for the anchor sealing operation. Specifically, taking out a proper amount of putty, adding a curing agent, proportioning the putty and the curing agent according to the mass ratio of 100:2, and then stirring the mixed putty and the curing agent until the putty and the curing agent are uniform; and using a scraper to paint the prepared putty at the gap between the cover plate 20 and the steel bar hole 203.
The curing agent mentioned above generally includes polyamide curing agents, aliphatic amine curing agents, and aromatic amine curing agents. In this embodiment, the aliphatic amine curing agent and the putty are mixed and stirred to achieve the effect of rapid 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 grouting operation of the pore canal can be thoroughly performed after 1h, thereby greatly improving the construction efficiency;
(2) The gap between the sealing cover plate 20 and the steel bar hole 203 is sealed by utilizing putty, and the holes of the steel strands in the steel bar hole 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) Because if the traditional mode is adopted, the mushroom head is required to be chiseled after grouting is completed, however, the steel strand and the clamping piece are easy to disturb in the chiseling process, and the prestress quality is further affected. By adopting the method provided by the embodiment, the thickness of the putty is less than 1cm, so that chiseling is not needed, and the continuous cast-in-place concrete combination effect on the bridge deck at the later stage is good.
Fifth, the grouting ends of the 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. The side wall of the secondary pressurizing pipe 32 is connected with the grouting pump 31 through a pipeline, one end of the secondary pressurizing pipe 32 is provided with a second flange edge 33, the other end of the secondary pressurizing pipe 32 is provided with a secondary pressurizing component 34 with an execution end extending into the secondary pressurizing pipe 32, and the side wall of the secondary pressurizing pipe 32, which is close to one end of the second flange edge 33, is provided with a pressure detecting component 35.
In addition, the secondary pressurizing member 34 includes a driving motor 341 disposed on the outer wall of the secondary pressurizing pipe 32, and a packing auger 342 disposed at the executing end of the driving motor 341 and disposed in the secondary pressurizing pipe 32.
In the present embodiment, the pressure detecting part 35 includes a pressure measuring pipe 351 whose bottom communicates with the outer wall of the secondary pressurizing pipe 32, a pressure sensor 352 provided at the top of the inner wall of the pressure measuring pipe 351, and a pressure transmitting plate 353 provided at the bottom of the pressure sensor 352.
In this embodiment, a bellows may be disposed in the pre-stress test main through hole to facilitate the slurry flow.
After cleaning, a plurality of reinforcing steel bars penetrate through the prestress testing main through holes by using a beam penetrating machine, and after beam penetrating, sealing is carried out at two ends of the T beam by using sealing plates 20. Specifically, in the actual capping, a plurality of reinforcing bars are respectively penetrated through the reinforcing bar holes 203 so that gaps are formed between the reinforcing bars to facilitate the exhaustion. In addition, the limiting friction block 201 is clamped with the inner wall of the pre-stress test main through hole, so that the fixation of the cover plate 20 is completed.
The grouting ends of the 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 of intermittent grouting caused by 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 carried out, stirred slurry is introduced into the grouting pump 31, and the grouting pump 31 gives power to the slurry for transmission so that the slurry enters the secondary pressurizing pipe 32, the grouting holes and the prestress testing main through holes through pipelines.
When the secondary pressurizing member 34 works, the actuating end of the driving motor 341 drives the packing auger 342 to rotate, and the packing auger 342 performs secondary extrusion on the slurry so that the slurry enters the grouting hole. Further, the slurry in the secondary pressurization pipe 32 is pressed against the pressure transmitting plate 353, and the pressure sensor 352 generates pressure data and transmits the pressure data to the controller, and the controller monitors the grouting pressure.
And step six, negative suction and drainage, namely connecting a negative pressure 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 provided at the top of the negative pressure tank 41 and having an execution end communicating with the negative pressure tank 41, and a transmission member 43 provided at the outer wall of the negative pressure tank 41 for connecting the 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 tube 432 having one end connected to the solenoid valve 431, an externally threaded tube 433 rotatably connected to the other end of the transmission tube 432, and an internally threaded tube 434 disposed on the inner wall of the air hole 202.
In this embodiment, when grouting is performed, the negative pressure suction device 40 is connected to the cover plate 20 to form a negative pressure in the grouting hole and the pre-stress test main through hole, and after grouting is completed, the grouting operation is completed by performing cement sealing on the ends of the grouting hole and the pre-stress test main through hole.
Further, when the negative pressure suction device 40 works, the external thread tube 433 is in threaded connection with the internal thread tube 434 to complete the connection between the negative pressure tank 41 and the cover plate 20, and at this time, the vacuum pump 42 starts to work 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 tube 432.
And seventhly, sealing the end, and sealing the grouting holes and the end parts of the prestress testing main through holes after grouting is completed, so that grouting operation can be completed.
The specific flow of the invention is as follows:
the controller model is "6ES7214-2AD23-0XB8", and the pressure sensor 352 model is "NF102".
When grouting is performed, firstly, a switching device 10 is arranged at the end part of a grouting hole of a T beam, a water source pipe and an air source pipe are connected with the switching device 10, the switching device 10 firstly switches the water source pipe to be communicated with the grouting hole so as to perform water flow cleaning on the grouting hole and a prestress test main through hole communicated with the grouting hole, and after 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 test main through hole communicated with the grouting hole;
when the switching device 10 is installed, the threaded positioning pipe 121 is arranged 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, the fixation can be completed, and the water source pipe and the air source pipe are respectively connected with the first flange edge 15, so that the connection of the water source and the air source can be completed;
When the switching driving part 16 works, the linear guide rail 162 drives the switching sliding plate 13 to move so as to enable one of the guide pipes 14 to be communicated with the threaded positioning pipe 121;
a corrugated pipe can be arranged in the prestress test main through hole so as to facilitate slurry flow;
penetrating the plurality of steel bars through the prestress test main through holes by using a beam penetrating machine after cleaning, and sealing two ends of the T beam by using sealing plates 20 after beam penetrating; in actual capping, a plurality of steel bars respectively penetrate through the steel bar holes 203, so that gaps are formed between the steel bars to facilitate air exhaust, and the limiting friction blocks 201 are clamped with the inner wall of the prestress test main through hole so as to complete the fixation of the capping plate 20;
Uniformly stirring putty and a curing agent, smearing and sealing gaps between the sealing cover plate 20 and the reinforcing steel bar holes 203 by using the uniformly stirred mixture, and performing pressure grouting after the mixture is cured;
the grouting ends of the 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 device 30 during grouting, and grouting interruption caused by the fact that the grouting device 30 in a working state stops working is avoided;
When the grouting device 30 is connected with the switching device 10, the second flange 33 is connected with the first flange 15 through screws;
when grouting is carried out, stirred slurry is introduced into the grouting pump 31, and the grouting pump 31 gives 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 component 34 works, the actuating end of the driving motor 341 drives the auger 342 to rotate, and the auger 342 performs secondary extrusion on the slurry so that the slurry enters the grouting hole; the slurry in the secondary pressurizing pipe 32 is extruded by the pressure transmitting plate 353, the pressure sensor 352 generates pressure data and transmits the pressure data to the controller, and the controller monitors the grouting pressure;
When grouting, the negative pressure suction device 40 is connected with the cover plate 20 to form negative pressure in the grouting hole and the prestress testing main through hole, and after grouting is finished, the grouting hole and the end part of the prestress testing main through hole are subjected to cement sealing, so that grouting can be finished;
When the negative pressure suction device 40 works, the external thread pipe 433 is in threaded connection 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 work 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 examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A grouting method for a T-beam, the method comprising the steps of:
Step one, installing a switching device, namely installing the switching device (10) at the end part of a grouting hole of a T beam, wherein the switching device (10) comprises a base plate (11), a connecting part (12) arranged at one side of the base plate (11), a sliding groove (111) arranged at the other side of the base plate (11), a switching sliding plate (13) in sliding connection with the sliding groove (111), a plurality of guide pipes (14) penetrating through the switching sliding plate (13), a first flange edge (15) arranged at one end of the guide pipe (14) far away from the connecting part (12), and a switching driving part (16) arranged on the upper surface of the base plate (11) and used for moving one of the guide pipes (14) to the position corresponding to the connecting part (12), 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).
When the switching device (10) is installed, a threaded positioning pipe (121) is arranged at the end part of a grouting hole, a 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 finish fixing, and then a water source pipe and an air source pipe are respectively connected with a first flange edge (15) to finish connection of a water source and an air source;
Step two, cleaning a grouting runner, namely connecting a water source pipe and an air source pipe with a switching device (10), switching the water source pipe to be communicated with a grouting hole by the switching device (10) so as to clean the grouting hole and a pre-stress test main through hole communicated with the grouting hole in a water flow manner, and switching the air source pipe to be communicated with the grouting hole by the switching device (10) after the water flow cleaning so as to drain the grouting hole and the pre-stress test main through hole communicated with the grouting hole in an air flow manner;
Penetrating the steel bars into the prestress testing main through holes by using a penetrating machine, sealing the two ends of the T-beam by using sealing plates (20) after the penetrating is finished, penetrating the steel bars by the sealing plates (20) and clamping the inner walls of the prestress testing main through holes;
fourthly, sealing the anchor, uniformly stirring the putty and the curing agent, smearing and sealing gaps between the sealing cover plate (20) and the reinforcing steel bar holes (203) by the uniformly stirred mixture, and performing pressure grouting after the mixture is cured;
Step five, pressure grouting, the grouting ends of a plurality of grouting devices (30) are connected with a switching device (10), the switching device (10) switches the grouting end of one grouting device (30) to be communicated with a grouting hole, the grouting device (30) comprises a grouting pump (31) and a secondary pressurizing pipe (32), the side wall of the secondary pressurizing pipe (32) is connected with the grouting pump (31) through a pipeline, one end of the secondary pressurizing pipe (32) is provided with a second flange edge (33), the other end of the secondary pressurizing pipe (32) is provided with a secondary pressurizing component (34) with an executing end extending into the secondary pressurizing pipe (32), and the side wall of the secondary pressurizing pipe (32) close to one end of the second flange edge (33) is provided with a pressure detecting component (35);
the secondary pressurizing component (34) comprises a driving motor (341) arranged on the outer wall of the secondary pressurizing pipe (32), and an auger (342) arranged at the execution end of the driving motor (341) and positioned in the secondary pressurizing pipe (32);
The pressure detection component (35) comprises a pressure measuring tube (351) with the bottom communicated with the outer wall of the secondary pressurizing tube (32), a pressure sensor (352) arranged at the top of the inner wall of the pressure measuring tube (351), and a pressure transmitting plate (353) arranged at the bottom of the pressure sensor (352);
step six, negative suction drainage, namely connecting a negative suction device (40) with the cover plate (20) so as to form negative pressure in the grouting hole and the prestress testing main through hole;
And seventhly, sealing the end, and sealing the grouting holes and the end parts of the prestress testing main through holes after grouting is completed, so that grouting operation can be completed.
2. The grouting method for a T-beam according to claim 1, wherein the switching driving part (16) includes a through hole (161) penetrating 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 support columns, and an execution end of the linear guide (162) penetrates the through hole (161) and is connected to the switching slider (13).
3. The grouting method for the T beam according to claim 1, wherein the outer wall of the cover plate (20) is provided with a plurality of limiting friction blocks (201) in an annular array, 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) in a penetrating mode, the air holes (202) are located at the center of the cover plate (20), and the plurality of reinforcing steel bar holes (203) are distributed in an annular array.
4. A grouting method for a T-beam according to claim 3, characterized in that the negative pressure suction device (40) comprises a negative pressure tank (41), a vacuum pump (42) provided at the top of the negative pressure tank (41) and having an execution end communicating with the negative pressure tank (41), and a transmission member (43) provided at the outer wall of the negative pressure tank (41) for connecting the cover plate (20).
5. The grouting method for T-beam according to claim 4, wherein the transmission part (43) comprises a solenoid valve (431) provided at an 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) provided at an inner wall of the air hole (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680374.9A CN114393685B (en) | 2021-12-31 | 2021-12-31 | Grouting method for T beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111680374.9A CN114393685B (en) | 2021-12-31 | 2021-12-31 | Grouting method for T beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114393685A CN114393685A (en) | 2022-04-26 |
| CN114393685B true CN114393685B (en) | 2024-06-11 |
Family
ID=81229273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111680374.9A Active CN114393685B (en) | 2021-12-31 | 2021-12-31 | Grouting method for T beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114393685B (en) |
Families Citing this family (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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089694A (en) * | 2001-05-23 | 2002-11-30 | 주식회사유신코퍼레이션 | The method of construction prevening a waterflow of cassion basis for a bridge |
| CN201155588Y (en) * | 2007-11-28 | 2008-11-26 | 烟台金洋旋流器有限公司 | Slurry automatic switching valve |
| CN103603273A (en) * | 2013-11-04 | 2014-02-26 | 沈阳市政集团有限公司 | Method for grouting construction of prestressed pipe |
| CN205741920U (en) * | 2016-05-13 | 2016-11-30 | 中冶交通建设集团有限公司 | A kind of Post-tension Prestress Construction anchor plate |
| CN110374004A (en) * | 2019-07-10 | 2019-10-25 | 江苏镇江路桥工程有限公司 | A kind of presstressed reinforcing steel mud-jacking technology |
| 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 |
-
2021
- 2021-12-31 CN CN202111680374.9A patent/CN114393685B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089694A (en) * | 2001-05-23 | 2002-11-30 | 주식회사유신코퍼레이션 | The method of construction prevening a waterflow of cassion basis for a bridge |
| CN201155588Y (en) * | 2007-11-28 | 2008-11-26 | 烟台金洋旋流器有限公司 | Slurry automatic switching valve |
| CN103603273A (en) * | 2013-11-04 | 2014-02-26 | 沈阳市政集团有限公司 | Method for grouting construction of prestressed pipe |
| CN205741920U (en) * | 2016-05-13 | 2016-11-30 | 中冶交通建设集团有限公司 | A kind of Post-tension Prestress Construction anchor plate |
| CN110374004A (en) * | 2019-07-10 | 2019-10-25 | 江苏镇江路桥工程有限公司 | A kind of presstressed reinforcing steel mud-jacking technology |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114393685A (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101139867B (en) | Pressure-grouting construction method for structure consolidation | |
| CN105113425B (en) | A kind of construction method of efficiently assembled steel reinforced concrete combination beam | |
| CN114393685B (en) | Grouting method for T beam | |
| CN101109227B (en) | Construction method of single-stride large cantilever double-pre-stress concrete steel concrete crossbeam | |
| CN103615053B (en) | Monolithic reinforced concrete structure post empiricism engineering method | |
| CN113738119A (en) | Large-span prestressed concrete beam roof tooth block tensioning construction method with bonding | |
| CN103410329A (en) | Large-span basement concrete roof structure flat tube bonded prestressing force construction method | |
| CN110552370A (en) | Reverse construction method based annular lining wall integral single-side formwork construction method | |
| CN107299773B (en) | Load bearing wall reinforcing construction method | |
| CN106930338A (en) | A kind of reinforcement means of the sleeve of glass under water | |
| AU2021102008A4 (en) | Concrete pouring guiding device and construction method for sewage treatment tank | |
| CN113756301A (en) | Basalt fiber accurate sectional grouting anchoring system and installation method thereof | |
| CN107989398B (en) | Construction method for wall reinforcing structure | |
| CN113530294A (en) | Method for assembling prefabricated member reinforcing column by adopting concrete | |
| CN210977514U (en) | Tunnel secondary lining anti-hollow longitudinal belt mold grouting pipe drawing device | |
| CN106988298A (en) | The concrete guide wall and its construction method of a kind of preset reinforcing bar of assembled | |
| KR101503816B1 (en) | Vacuum grouting method for filling post-tensioned concrete grout in sheath tube of post-tensioned bridge | |
| CN110230271A (en) | Bridge biased displacement post-reinforcing resets construction method | |
| CN113719152B (en) | Steel member externally-wrapped prestressed precast concrete reinforced structure and construction method | |
| Issa | Methods of crack repair in concrete structures | |
| CN217027506U (en) | Prefabricated module connecting structure | |
| CN110820990B (en) | Embedded steel bar positioning and grouting method for PC component construction | |
| CN114434627B (en) | Post-tensioning method large tubular pile production process | |
| CN113790065B (en) | Auxiliary kit for in-situ repair of large-volume defects of tunnel lining by UHPC material and construction method | |
| CN111778882B (en) | Method for reinforcing plate arch formed by reforming main arch rib of double-arch bridge |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |