CN111945585A - Bridge prestressed pipeline end slurry supplementing device and method - Google Patents
Bridge prestressed pipeline end slurry supplementing device and method Download PDFInfo
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- CN111945585A CN111945585A CN202010802899.4A CN202010802899A CN111945585A CN 111945585 A CN111945585 A CN 111945585A CN 202010802899 A CN202010802899 A CN 202010802899A CN 111945585 A CN111945585 A CN 111945585A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention relates to the technical field of slurry supplement of a bridge prestressed pipeline, in particular to slurry supplement equipment and a slurry supplement method for an end of a bridge prestressed pipeline, wherein the slurry supplement method comprises the following steps: s10, connecting one end of a flexible pipe to a grout outlet of a grouting container; s20, stirring the grouting material according to the grouting requirement, and pouring the stirred grouting material into a grouting container; s30, inserting the other end of the flexible pipe into a grouting hole in the end of the prestressed pipeline; and S40, starting to supplement the slurry until grouting materials flow out of grouting holes in the end of the prestressed pipeline, stopping supplementing the slurry, and repeating the step for more than 3 times. The grout supplementing method is simple, effective and convenient to realize, is a remedial measure when a void or a cavity exists at the end position of the pipeline, can prolong the service life and the durability of the bridge, and ensures the normal exertion of the bridge prestress system.
Description
Technical Field
The invention relates to the technical field of bridge prestressed pipeline slurry supplement, in particular to a device and a method for slurry supplement of an end of a bridge prestressed pipeline.
Background
The bridge prestressed system is a main stress system for bearing the dead weight and live load of the bridge, when the grouting in the prestressed pipeline of the beam slab is full, not only can the prestressed steel strands, the grouting material in the pore channel and the reinforced concrete around the pore channel form a common stress system, but also can prevent the prestressed tendons from contacting with air and water in the air, and avoid the corrosion of the prestressed steel strands.
Due to the reasons that the pressure stabilizing time is insufficient, the grouting process such as slurry spraying in the pipeline after pipe drawing is poor, the slurry micro-expansion effect is poor, the water-cement ratio does not meet the requirements of site construction and the like, after the prestressed grouting of the bridge is completed, the end part of the prestressed duct is often hollow or hollow in a section range. Due to the linear design of the prestressed steel strands, after the end of the prestressed duct is emptied or is hollow, the prestressed steel strands are basically exposed and are in direct contact with air, and the stress of the prestressed steel strands at the two ends of the prestressed beam body is concentrated, so that the corrosion of the prestressed steel strands is aggravated under the action of high stress, and therefore the emptying or the hollow at the end of the prestressed duct needs to be subjected to slurry supplementing treatment. Because the prestressed duct end is usually very complicated in steel bar arrangement, it is difficult to carry out re-grouting in a windowing slurry supplementing manner.
Based on the above description, in the construction of the prestressed bridge slab, there is an urgent need for a processing method and a supporting device capable of performing grout replenishment on the void or cavity condition in the prestressed duct end, so as to solve the problem that the void or cavity exists at the prestressed duct end position in the prior art, which affects the service life and durability of the bridge, and causes the bridge prestressed system not to function normally.
Disclosure of Invention
One of the purposes of the invention is to provide a method for replenishing slurry to the end of a prestressed bridge pipeline, which is simple, effective and convenient to realize, is a remedy measure for the existence of a void or a cavity at the end of the pipeline, can improve the service life and the durability of the bridge, and ensures the normal exertion of a prestressed bridge system.
The invention also aims to provide a device for grout replenishment at the end of the prestressed pipeline of the bridge, which uses the grout replenishment method.
The purpose of the invention is realized by the following technical scheme.
The utility model provides a bridge prestressed pipe end mends thick liquid equipment, prestressed pipe way sets up in the prestressed beam slab, prestressed beam slab tip is provided with the slip casting hole, the lower port in slip casting hole and the end switch-on of prestressed pipe way, mend thick liquid equipment and include grout container and flexible pipe, the horizontal plane that grout container bottom plane was located is on prestressed pipe way, grout container bottom is provided with out the thick liquid mouth, and upper portion is provided with into thick liquid mouth, flexible pipe one end is connected with the play thick liquid mouth of grout container, and the other end inserts in the slip casting hole of prestressed pipe end department.
Preferably, a switch is arranged on the flexible pipe or at the grout outlet of the grouting container.
Preferably, the flexible pipe is made of a plastic material.
Preferably, the tip of the flexible tube inserted into the injection hole is set at an inclined angle.
Preferably, the grout inlet of the grout container is positioned at the top end of the grout container.
Preferably, the grouting container is provided with a handle.
A method for supplementing slurry at the end of a prestressed bridge pipeline is applied to equipment for supplementing slurry at the end of the prestressed bridge pipeline, wherein the prestressed pipeline is arranged in a prestressed beam slab, the end of the prestressed beam slab is provided with a grouting hole, the lower port of the grouting hole is communicated with the end of the prestressed pipeline, the equipment for supplementing slurry comprises a grouting container and a flexible pipe, the horizontal plane of the bottom end plane of the grouting container is positioned above the prestressed pipeline, the bottom of the grouting container is provided with a slurry outlet, the upper part of the grouting container is provided with a slurry inlet, one end of the flexible pipe is connected with the slurry outlet of the grouting container, and the other end of the flexible pipe is inserted into the grouting hole at the end of the prestressed pipeline;
the pulp replenishing method comprises the following steps:
s10, connecting one end of a flexible pipe to a grout outlet of a grouting container;
s20, stirring the grouting material according to the grouting requirement, and pouring the stirred grouting material into a grouting container;
s30, inserting the other end of the flexible pipe into a grouting hole in the end of the prestressed pipeline;
and S40, starting to supplement the slurry until grouting materials flow out of grouting holes in the end of the prestressed pipeline, stopping supplementing the slurry, and repeating the step for more than 3 times.
Preferably, a switch is arranged on the flexible pipe or at a grout outlet of the grouting container;
in step S40, the switch is turned on to start grout replenishment until grouting material flows out of the grouting hole at the end of the prestressed pipe, and then the switch is turned off to stop grout replenishment, and the step is repeated for more than 3 times.
The invention has the beneficial effects that:
in the bridge prestressed pipeline end slurry supplementing device provided by the scheme, the prestressed pipeline is arranged in the prestressed beam slab, the end part of the prestressed beam slab is provided with the grouting hole, the lower port of the grouting hole is communicated with the end of the prestressed pipeline, the slurry supplementing device comprises a grouting container and a flexible pipe, the horizontal plane where the bottom end plane of the grouting container is located is above the prestressed pipeline, the bottom of the grouting container is provided with a slurry outlet, the upper part of the grouting container is provided with a slurry inlet, one end of the flexible pipe is connected with the slurry outlet of the grouting container, and the other end of the flexible pipe is inserted into the grouting hole at the end part of the prestressed pipeline. The slurry supplementing method is applied to slurry supplementing equipment for the end of the bridge prestressed pipeline. The pulp supplementing method comprises the following steps: s10, connecting one end of a flexible pipe to a grout outlet of a grouting container; s20, stirring the grouting material according to the grouting requirement, and pouring the stirred grouting material into a grouting container; s30, inserting the other end of the flexible pipe into a grouting hole in the end of the prestressed pipeline; and S40, starting to supplement the slurry until grouting materials flow out of grouting holes in the end of the prestressed pipeline, stopping supplementing the slurry, and repeating the step for more than 3 times. The grout supplementing method is simple, effective and convenient to realize, is a remedial measure when a void or a cavity exists at the end position of the pipeline, can prolong the service life and the durability of the bridge, and ensures the normal exertion of the bridge prestress system.
Drawings
FIG. 1 is a front view of the prestressed pipe and prestressed beam slab assembly provided in this embodiment;
FIG. 2 is a left side view of the prestressed pipe and the prestressed beam slab according to the present embodiment;
FIG. 3 is a schematic structural diagram of a device for grout replenishment at an end of a prestressed bridge pipeline provided by the embodiment;
fig. 4 is a flowchart of a method for grout filling of an end of a prestressed bridge pipeline provided by the embodiment.
In the figure:
1-prestressed pipe; 2-surface layer steel bars; 3-prestressed beam slab; 6-grouting container; 7-grouting material; 8-a flexible tube; 9-grouting holes; 10-voids; 11-prestressed steel strands; 12-slurry.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Device embodiment
As shown in fig. 1 to 3, in the present solution, a plurality of prestressed pipes 1 are disposed in a prestressed beam slab 3, a plurality of longitudinal and transverse surface steel bars 2 are disposed in the prestressed beam slab 3, and the surface steel bars 2 are distributed around the prestressed pipes 1. The prestressed steel strand 11 penetrates through the prestressed pipeline 1. The two ends of the prestressed pipeline 1 are often empty or hollow, that is, the end of the prestressed pipeline 1 is provided with a hollow 10, and slurry 12 is distributed at the middle part of the prestressed pipeline 1 at a grouting compact position.
In this embodiment, the end of the prestressed beam slab 3 is provided with a grouting hole 9, a lower port of the grouting hole 9 is communicated with the end of the prestressed pipe 1, and grouting is performed into the prestressed pipe 1 through the grouting hole 9. The grout supplementing equipment comprises a grouting container 6 and a flexible pipe 8, wherein the grouting container 6 is used for containing grouting materials 7, the horizontal plane where the bottom end plane of the grouting container 6 is located on the prestressed pipeline 1, a grout outlet is formed in the bottom of the grouting container 6, a grout inlet is formed in the upper portion of the grouting container, one end of the flexible pipe 8 is connected with the grout outlet of the grouting container 6, and the other end of the flexible pipe is inserted into a grouting hole 9 in the end of the prestressed pipeline 1.
In this embodiment, as a preferable scheme, the grouting equipment further includes a switch for controlling whether the grouting material 7 in the grouting container 6 flows out or not, when the switch is in a closed state, the grouting material 7 in the grouting container 6 does not flow out, and when the switch is in an open state, the grouting material 7 in the grouting container 6 flows into the end of the prestressed pipe 1 through the flexible pipe 8. The switch can be arranged at the grout outlet of the grouting container 6 and also can be arranged on the flexible pipe 8.
In this embodiment, as a preferable scheme, the flexible pipe 8 is made of a plastic material.
In this embodiment, the end of the flexible tube 8 inserted into the grouting hole 9 is preferably set to an inclined angle. The inclination angle can ensure the fluency of pouring the grouting material 7 into the pore canal of the grouting hole 9.
In this embodiment, the grout inlet of the grout container 6 is preferably located at the top end of the grout container 6. Of course, the top end is not limited to the uppermost end, and the top end may be provided at another position of the upper end portion of the grout container 6.
In this embodiment, as a preferable scheme, the grouting container 6 is provided with a handle, so that the grouting container 6 can be conveniently taken and placed.
Method embodiment
The application also provides a slurry supplementing method for the end of the prestressed bridge pipeline, which is applied to the slurry supplementing equipment for the end 1 of the prestressed bridge pipeline, as shown in fig. 4, and the slurry supplementing method comprises the following steps:
and S10, firmly connecting one end of the flexible pipe 8 to a grout outlet of the grouting container 6.
S20, stirring the grouting material 7 according to grouting requirements, and pouring the stirred grouting material 7 into a grouting container 6.
And S30, inserting the other end of the flexible pipe 8 into a grouting hole 9 at the end of the prestressed pipeline 1. The end of the flexible pipe 8 inserted into the grouting hole 9 is subjected to oblique angle treatment, so that the smoothness of pouring the grouting material 7 into the pore channel of the grouting hole 9 is guaranteed.
S40, after the preparation work is finished, grout is supplemented, because the horizontal plane where the bottom end plane of the grouting container 6 is located above the prestressed pipeline 1 and is influenced by gravity, if a switch is not arranged, the other end of the flexible pipe 8 is inserted into a grouting hole 9 in the end of the prestressed pipeline 1, grouting materials 7 can flow into the grouting hole 9 from the grouting container 6, grout supplementing is started until the grouting materials 7 flow out of the grouting hole 9 in the end of the prestressed pipeline 1, and then grout supplementing is stopped. The grouting material 7 will gradually fill the void or cavity at the end of the prestressed pipe 1 under the action of gravity. However, the slurry replenishing process is usually repeated more than 3 times to completely replenish the void or hollow space at the end of the prestressed pipe 1 because the air gas in the void or hollow space at the end of the prestressed pipe 1 is discharged out with hysteresis and the process is slow.
In this embodiment, if a switch is disposed on the flexible pipe 8 or at the grout outlet of the grouting container 6, in step S40, the switch is turned on first to start grout replenishment until grouting material 7 flows out of the grouting hole 9 at the end of the prestressed pipe 1, and then the switch is turned off to stop grout replenishment, and this step is repeated for more than 3 times.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (8)
1. The bridge prestressed pipeline end slurry supplementing device is characterized in that a prestressed pipeline is arranged in a prestressed beam slab, a grouting hole is formed in the end portion of the prestressed beam slab, the lower end port of the grouting hole is communicated with the end of the prestressed pipeline, the slurry supplementing device comprises a grouting container and a flexible pipe, the horizontal plane where the bottom end plane of the grouting container is located above the prestressed pipeline, a slurry outlet is formed in the bottom of the grouting container, a slurry inlet is formed in the upper portion of the grouting container, one end of the flexible pipe is connected with the slurry outlet of the grouting container, and the other end of the flexible pipe is inserted into the grouting hole in the end portion of the prestressed pipeline.
2. The bridge prestressed pipe end grout-replenishing equipment according to claim 1, wherein a switch is arranged on the flexible pipe or at a grout outlet of the grouting container.
3. The bridge prestressed pipe end grout-filling apparatus as claimed in claim 1, wherein said flexible pipe is made of plastic material.
4. The bridge prestressed pipe end grouting apparatus of claim 1, wherein an end of said flexible pipe inserted into said grouting hole is set at an inclined angle.
5. The bridge prestressed pipe end grout-replenishing equipment according to claim 1, wherein a grout inlet of the grout container is positioned at the top end of the grout container.
6. The bridge prestressed pipe end grout-replenishing equipment according to claim 1, wherein a handle is provided on said grout container.
7. A method for supplementing slurry at the end of a prestressed bridge pipeline is characterized in that the method is applied to equipment for supplementing slurry at the end of the prestressed bridge pipeline, the prestressed pipeline is arranged in a prestressed beam slab, the end of the prestressed beam slab is provided with a grouting hole, the lower port of the grouting hole is communicated with the end of the prestressed pipeline, the slurry supplementing equipment comprises a grouting container and a flexible pipe, the horizontal plane of the bottom end plane of the grouting container is positioned above the prestressed pipeline, the bottom of the grouting container is provided with a slurry outlet, the upper part of the grouting container is provided with a slurry inlet, one end of the flexible pipe is connected with the slurry outlet of the grouting container, and the other end of the flexible pipe is inserted into the grouting hole at the end of the prestressed pipeline;
the pulp replenishing method comprises the following steps:
s10, connecting one end of a flexible pipe to a grout outlet of a grouting container;
s20, stirring the grouting material according to the grouting requirement, and pouring the stirred grouting material into a grouting container;
s30, inserting the other end of the flexible pipe into a grouting hole in the end of the prestressed pipeline;
and S40, starting to supplement the slurry until grouting materials flow out of grouting holes in the end of the prestressed pipeline, stopping supplementing the slurry, and repeating the step for more than 3 times.
8. The method for grouting an end of a prestressed bridge pipeline according to claim 7,
a switch is arranged on the flexible pipe or at the grout outlet of the grouting container;
in step S40, the switch is turned on to start grout replenishment until grouting material flows out of the grouting hole at the end of the prestressed pipe, and then the switch is turned off to stop grout replenishment, and the step is repeated for more than 3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802899.4A CN111945585A (en) | 2020-08-11 | 2020-08-11 | Bridge prestressed pipeline end slurry supplementing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010802899.4A CN111945585A (en) | 2020-08-11 | 2020-08-11 | Bridge prestressed pipeline end slurry supplementing device and method |
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| CN111945585A true CN111945585A (en) | 2020-11-17 |
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| CN202010802899.4A Pending CN111945585A (en) | 2020-08-11 | 2020-08-11 | Bridge prestressed pipeline end slurry supplementing device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187270A (en) * | 2003-12-25 | 2005-07-14 | Taiheiyo Material Kk | Grout material, method of injecting grout material and prestressed concrete |
| CN204385623U (en) * | 2014-12-11 | 2015-06-10 | 陈熙贵 | Sizing device mended by a kind of bridge prestress pipeline |
| CN106869029A (en) * | 2017-01-17 | 2017-06-20 | 陈宇豪 | Bridge prestress pipeline ftercompction sizing device and its construction method |
| CN107023176A (en) * | 2017-03-29 | 2017-08-08 | 中铁十九局集团有限公司 | A kind of low pressure concrete structural cracks method for repairing and mending and device |
| CN206937597U (en) * | 2017-06-21 | 2018-01-30 | 中铁四局集团路桥工程有限公司 | A kind of automatic benefit sizing device being used for after box beam mud jacking |
| CN209369400U (en) * | 2018-12-25 | 2019-09-10 | 长安大学 | A kind of repairing concrete crack syringe |
-
2020
- 2020-08-11 CN CN202010802899.4A patent/CN111945585A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187270A (en) * | 2003-12-25 | 2005-07-14 | Taiheiyo Material Kk | Grout material, method of injecting grout material and prestressed concrete |
| CN204385623U (en) * | 2014-12-11 | 2015-06-10 | 陈熙贵 | Sizing device mended by a kind of bridge prestress pipeline |
| CN106869029A (en) * | 2017-01-17 | 2017-06-20 | 陈宇豪 | Bridge prestress pipeline ftercompction sizing device and its construction method |
| CN107023176A (en) * | 2017-03-29 | 2017-08-08 | 中铁十九局集团有限公司 | A kind of low pressure concrete structural cracks method for repairing and mending and device |
| CN206937597U (en) * | 2017-06-21 | 2018-01-30 | 中铁四局集团路桥工程有限公司 | A kind of automatic benefit sizing device being used for after box beam mud jacking |
| CN209369400U (en) * | 2018-12-25 | 2019-09-10 | 长安大学 | A kind of repairing concrete crack syringe |
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