CN111962407A - Method for treating incomplete grouting of hogging moment prestress hole channel of continuous beam - Google Patents
Method for treating incomplete grouting of hogging moment prestress hole channel of continuous beam Download PDFInfo
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- CN111962407A CN111962407A CN202010956318.2A CN202010956318A CN111962407A CN 111962407 A CN111962407 A CN 111962407A CN 202010956318 A CN202010956318 A CN 202010956318A CN 111962407 A CN111962407 A CN 111962407A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 239000004567 concrete Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000011440 grout Substances 0.000 claims description 30
- 239000000428 dust Substances 0.000 claims description 9
- 238000007667 floating Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 9
- 238000005498 polishing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002262 irrigation Effects 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/02—Analysing fluids
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Abstract
The invention relates to the technical field of building construction, in particular to a method for processing the incomplete grouting of a hogging moment prestressed duct of a continuous beam, which can accurately check the incomplete grouting part of the prestressed duct by adopting ultrasonic detection equipment, then respectively opening holes on the top surface of a concrete member at two ends of the incomplete grouting area of the prestressed duct, and then grouting through grouting (slurry outlet) pipes arranged at the opening holes; the method has the advantages of simple process, convenient construction, capability of improving the construction efficiency, better effect after treatment, capability of effectively improving the grouting fullness of the prestressed duct of the continuous beam and preventing the steel strand from rusting and loosening, thereby improving the bearing capacity of the continuous beam.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a method for treating incomplete grouting of a hogging moment prestressed duct of a continuous beam.
Background
The prestressed duct grouting is used as a last defense line for preventing prestressed tendons from being corroded in a post-tensioned prestressed concrete bridge, is also a necessary condition for ensuring the correct action of prestress, and has the problem that the quality of the duct grouting must be carefully treated to ensure the bearing capacity, the service life and the safety of bridge operation of the bridge structure. Although the existing most used vacuum auxiliary grouting technology improves grouting quality to a certain extent compared with the common pressure grouting technology, practice proves that the application of the technology has defects at the same time. Therefore, the method has the advantages that the method is very necessary to check the fullness of the pore canal grouting through an effective means and perform grouting supplement on the existing unsaturated part so as to ensure the solid quality of the pore canal grouting.
At present, the types of the grouting plumpness of the pore channels are detected in the professional field, for example, as for the plumpness detection method, a visual observation method, an irrigation method, a grooving method, a geological radar method (GPR) and the like exist, but in an actual situation, the visual observation method and the irrigation method are only suitable for detecting the grouting plumpness of the continuous beam positive bending moment pore channels. The instrument is commonly used for detecting the grouting plumpness of the hogging moment duct of the continuous beam, the geological radar method detection of the instrument also has the limitation, and multiple tests prove that the metal corrugated pipe has strong shielding effect on electromagnetic waves. In addition, the treatment method of grouting insufficiency does not have a uniform standard in the industry, and the practical treatment of the commonly used windowing grouting method and mechanical tapping grouting method often has a plurality of problems, namely firstly, the treatment process is complex, the construction is inconvenient, and the construction efficiency is low; secondly, the concrete damage area of the beam body is large, and the whole stress of the beam body is damaged; thirdly, the prestressed tendons are easy to damage during construction operation; fourthly, effective grouting (slurry outlet) holes are not formed, and the quality of secondary grouting cannot be guaranteed; these are undesirable to those skilled in the art.
Disclosure of Invention
The invention aims to provide a method for treating incomplete grouting of a hogging moment prestressed duct of a continuous beam, which aims to simplify the construction difficulty, improve the construction efficiency and improve the quality after treatment. The innovation points are as follows: checking the grouting fullness of the pore channel, opening pores, installing grouting holes and grout outlet holes, cleaning the pore channel, grouting the pore channel, and removing the grouting holes and the grout outlet holes, wherein the concrete steps are as follows:
step S1, adopting ultrasonic detection equipment to check the grouting fullness of the prestressed duct, and marking the corresponding position of the area with insufficient grouting on the surface of the concrete member;
step S2, respectively forming openings at two ends of the grouting unsaturated area of the prestressed duct from the top surface of the concrete member according to the mark;
step S3, respectively installing a grouting pipe and a grout outlet pipe at the positions of the two openings;
step S4, removing floating dust in the prestressed duct, and checking the connectivity of an insufficient grouting area in the prestressed duct;
step S5, grouting an area with insufficient grouting in the prestressed duct by a grouting machine from the grouting pipe, plugging the grout outlet pipe after the grout outlet hole overflows the grout, and stopping grouting after the grouting is kept for a period of time;
and step S6, removing the grouting pipe and the grout outlet pipe.
Preferably, the step S1 specifically includes:
step S11, detecting the grouting plumpness of the prestressed duct by adopting a sound wave instrument and matching with a damping detector, and recording the detected data;
and step S12, marking the corresponding position of the part surface of the region with insufficient grouting by using an oil pen.
Preferably, the step S2 specifically includes:
step S21, acquiring the concrete thickness of the area with insufficient grouting of the prestressed duct and the position of the prestressed duct from a drawing;
and step S22, respectively opening holes at two ends of the grouting insufficient area of the prestressed duct from the top surface of the concrete member by adopting an electric drill drilling coring method according to the mark and the concrete thickness and the position of the prestressed duct.
Preferably, the diameter of the opening is 4-6 cm.
Preferably, the step S22 further includes the step of covering the opening of the hole to prevent the impurities from falling into the hole.
Preferably, the step S3 specifically includes:
step S31, manufacturing the grouting pipe and the grout outlet pipe, wherein the grouting pipe and the grout outlet pipe both comprise a steel plate and a steel pipe welded on the steel plate, the middle part of the steel plate is provided with a through hole with the diameter being the same as the inner diameter of the steel pipe, and the steel pipe is arranged right opposite to the through hole;
step S32, turning the upper end of the steel pipe into a screw thread;
step S33, the surfaces of the concrete members around the two openings are polished to be flat, and floating dust is blown off by an air compressor;
step S33, grinding the bottom surface of the steel plate by using an angle grinder;
and step S34, respectively coating structural adhesive on the polished surfaces of the steel plate and the concrete member, and installing the grouting pipe and the grout outlet pipe on the open hole through the structural adhesive.
Preferably, the step S4 specifically includes:
and (3) injecting compressed air with the air pressure not greater than 1MPa into the pre-stressed duct by aligning a compressed air pipe with the grouting pipe by adopting an air compressor so as to blow floating dust in the pre-stressed duct and check the connectivity of an insufficient grouting area in the pre-stressed duct.
Preferably, in the step S5, the slurry used for grouting is a prestressed pipe grouting slurry for bridges, the water-cement ratio is 1:0.28, and the grouting pressure is 0.5 MPa.
Preferably, in step S5, the grouting is stopped after holding the pressure for 3 min.
Preferably, the step S6 specifically includes:
and after the grouting is checked to be full and solidified, manually removing the grouting pipe and the grout outlet pipe by using an iron drill.
The invention has the following advantages or beneficial effects:
the invention discloses a method for processing the incomplete grouting of a hogging moment prestressed duct of a continuous beam, which can accurately check the incomplete grouting part of the prestressed duct by adopting ultrasonic detection equipment, then respectively opening holes on the top surface of a concrete member at two ends of the incomplete grouting area of the prestressed duct, and then grouting through grouting (slurry outlet) pipes arranged at the opening holes; the method has the advantages of simple process, convenient construction, capability of improving the construction efficiency, better effect after treatment, capability of effectively improving the grouting fullness of the prestressed duct of the continuous beam and preventing the steel strand from rusting and loosening, thereby improving the bearing capacity of the continuous beam.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a flow chart of a method for treating insufficient grouting of a hogging moment prestressed duct of a continuous beam in an embodiment of the invention;
FIG. 2 is a schematic view of the installation of a grouting pipe (slurry outlet pipe) in the embodiment of the invention;
FIG. 3 is a schematic illustration of a grouting embodiment of the invention;
FIG. 4 is a schematic view of the fabrication of a slip casting pipe;
wherein 1 is a capping beam; 2, prefabricating a T beam, 3, a pier top cast-in-place section, 4, 41 and 42, wherein the pier top cast-in-place section is a prestressed duct, the prestressed duct is an area with incomplete grouting, and the prestressed duct is an area with full grouting; 5 is a grouting pipe, 51 is a steel plate of the grouting pipe, 52 is a steel pipe of the grouting pipe, 521 is a screw thread of the grouting pipe, 6 is a slurry outlet pipe, 61 is a steel plate of the slurry outlet pipe, 62 is a steel pipe of the slurry outlet pipe, 621 is a screw thread of the slurry outlet pipe; 7 is a press and 8 is a press pipe.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the present invention is not limited thereto.
As shown in FIGS. 1 to 4, the invention discloses a method for treating incomplete grouting of hogging moment prestressed ducts of continuous beams, wherein 1 in FIG. 1 is a bent cap; 2, prefabricating a T beam, and 3, forming a pier top cast-in-place section; specifically, the method comprises the following steps:
step S1, checking the grouting plumpness of the pore canal: the grouting fullness of the prestressed duct 4 (the prestressed duct 4 is a corrugated pipe) is checked by adopting ultrasonic detection equipment, the corresponding position of the area 41 with insufficient grouting on the surface of the concrete member is marked, 42 is the area with full grouting of the prestressed duct, and the area with full grouting does not need to be marked.
Specifically, step S1 includes:
step S11, adopting a sound wave meter (such as a BCT sound wave meter) and matching a damping detector with 64 channels and 20khz to carry out channel grouting plumpness detection on the prestressed channel 4 (the hogging moment prestressed channel 4 which has been grouted), and recording the detected data.
Step S12, marking the position of the unsaturated area 41 on the surface of the concrete member (beam) with an oil pen.
Step S2, forming openings at both ends of the insufficient grouting area 41 of the prestressed duct 4 from the top surface of the concrete member according to the marking in step S1, respectively.
Specifically, step S2 includes:
in step S21, before opening the hole, the drawing is referred to obtain the concrete thickness of the prestressed duct 4 in the grouting insufficient area 41 and the position of the prestressed duct 4 from the drawing.
Step S22, according to the mark and the concrete thickness and the position of the prestressed duct 4, forming open holes at two ends of the grout-insufficient region 41 of the prestressed duct 4 by adopting an electric drill drilling coring method from the top surface of the concrete member (namely the top surface of the beam body), wherein the open holes extend from the top surface of the concrete member to the grout-insufficient region 41 of the prestressed duct 4; when the hole is opened, the drill bit is prevented from damaging the steel strand, and the orifice of the opened hole is covered by a template when the grouting (slurry outlet) pipe is not installed urgently, so that sundries are prevented from falling into the opened hole.
In a preferred embodiment of the present invention, the diameter of the opening is 4 to 6 cm.
And step S3, installing the grouting pipe 5 and the grout outlet pipe 6 at the positions of the two openings respectively.
Specifically, the step S3 specifically includes the following steps:
step S31, manufacturing the grouting pipe 5 and the slurry outlet pipe 6, wherein the grouting pipe 5 and the slurry outlet pipe 6 both comprise a steel plate and a steel pipe welded on the steel plate (the grouting pipe 5 comprises a steel plate 51 and a steel pipe 52 welded on the steel plate 51, and the slurry outlet pipe 6 comprises a steel plate 61 and a steel pipe 62 welded on the steel plate 61), the middle part of the steel plate is provided with a through hole with the diameter the same as the inner diameter of the steel pipe, and the steel pipe is arranged right opposite to the through hole.
Specifically, the inner diameter of the steel pipe adopted by the grouting pipe 5 and the slurry outlet pipe 6 is 5cm, the wall thickness is 5mm, the steel plate adopted by the grouting pipe 5 and the slurry outlet pipe 6 is 10mm thick, the length and the width are 10cm x 10cm, a hole with the diameter of 5cm is formed in the center, then the steel pipe and the steel plate are welded into a whole, and attention is paid to the hole of the steel plate and the hole pair of the steel pipe.
In step S32, the upper end of the steel pipe is threaded (the upper end of the steel pipe 52 has a thread 521, and the upper end of the steel pipe 62 has a thread 621) so as to connect with the pipeline of the grouting machine 7, and a stop valve (not shown) is installed.
And step S33, polishing the surfaces (subsequent bonding) of the concrete member around the two openings to a polishing depth of 2-3mm, and blowing off floating dust on the chiseled surface by using an air compressor.
And step S33, polishing the bottom surface of the steel plate by using an angle grinder, wherein the polishing degree is better than the appearance of metallic luster on the steel plate.
Step S34, respectively coating structural adhesive (RII type high-strength structural adhesive) on the polished surfaces of the steel plate and the concrete member, respectively installing a grouting pipe 5 and a grout outlet pipe 6 at the positions of the holes of the concrete member, forcibly pressing after bonding to enable the adhesive to overflow a bonding area, confirming that the bonding area cannot be shaken within 1 hour after compaction to ensure that the bonding surface is firm and stable, and installing the grouting pipe 5 and the grout outlet pipe 6 on the holes through the structural adhesive.
Step S4, removing floating dust in the prestressed duct 4, and checking the connectivity of the insufficient grouting area 41 in the prestressed duct 4;
specifically, a compressed air pipe is aligned to a grouting pipe 5 by adopting an air compressor to inject compressed air with the air pressure not more than 1MPa into the pre-stressed duct 4, floating dust in the duct is blown out of a grout outlet by utilizing the pressure of the compressed air, and the connectivity of a grout unsaturated area 41 in the pre-stressed duct 4 is checked.
Step S5, connecting the grouting machine 7 with the grouting pipe 5 by a grouting pipeline 8; and (3) grouting the insufficient grouting area 41 in the prestressed duct 4 from the grouting pipe 5 by using a grouting machine 7, plugging the grout outlet pipe 6 after the grout outlet hole overflows with the grout, and stopping grouting after the grouting is kept for a period of time to ensure full grouting.
In a specific embodiment of the invention, the slurry adopted for grouting is prestressed pipeline grouting slurry special for bridges, the water-cement ratio is 1:0.28, and the grouting pressure is 0.5 MPa.
And step S6, removing the grouting pipe 5 and the grout outlet pipe 6.
Preferably, the step S6 specifically includes:
and after the grouting is checked to be full and solidified, manually removing the grouting pipe 5 and the grout outlet pipe 6 by using an iron drill.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. A method for treating incomplete grouting of hogging moment prestressed ducts of continuous beams is characterized by comprising the following steps of:
step S1, adopting ultrasonic detection equipment to check the grouting fullness of the prestressed duct, and marking the corresponding position of the area with insufficient grouting on the surface of the concrete member;
step S2, respectively forming openings at two ends of the grouting unsaturated area of the prestressed duct from the top surface of the concrete member according to the mark;
step S3, respectively installing a grouting pipe and a grout outlet pipe at the positions of the two openings;
step S4, removing floating dust in the prestressed duct, and checking the connectivity of an insufficient grouting area in the prestressed duct;
step S5, grouting an area with insufficient grouting in the prestressed duct by a grouting machine from the grouting pipe, plugging the grout outlet pipe after the grout outlet hole overflows the grout, and stopping grouting after the grouting is kept for a period of time;
and step S6, removing the grouting pipe and the grout outlet pipe.
2. The method for treating the insufficient grouting of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the step S1 specifically comprises:
step S11, detecting the grouting plumpness of the prestressed duct by adopting a sound wave instrument and matching with a damping detector, and recording the detected data;
and step S12, marking the corresponding position of the part surface of the region with insufficient grouting by using an oil pen.
3. The method for treating the insufficient grouting of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the step S2 specifically comprises:
step S21, acquiring the concrete thickness of the area with insufficient grouting of the prestressed duct and the position of the prestressed duct from a drawing;
and step S22, respectively opening holes at two ends of the grouting insufficient area of the prestressed duct from the top surface of the concrete member by adopting an electric drill drilling coring method according to the mark and the concrete thickness and the position of the prestressed duct.
4. The method for treating the underfilling of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the diameter of said opening is 4-6 cm.
5. The method for treating the underbalanced hogging moment prestressed duct grouting according to claim 1, wherein the step S22 further includes the step of covering the open-hole opening to prevent impurities from falling.
6. The method for treating the insufficient grouting of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the step S3 specifically comprises:
step S31, manufacturing the grouting pipe and the grout outlet pipe, wherein the grouting pipe and the grout outlet pipe both comprise a steel plate and a steel pipe welded on the steel plate, the middle part of the steel plate is provided with a through hole with the diameter being the same as the inner diameter of the steel pipe, and the steel pipe is arranged right opposite to the through hole;
step S32, turning the upper end of the steel pipe into a screw thread;
step S33, the surfaces of the concrete members around the two openings are polished to be flat, and floating dust is blown off by an air compressor;
step S33, grinding the bottom surface of the steel plate by using an angle grinder;
and step S34, respectively coating structural adhesive on the polished surfaces of the steel plate and the concrete member, and installing the grouting pipe and the grout outlet pipe on the open hole through the structural adhesive.
7. The method for treating insufficient grouting in the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the step S4 is specifically as follows:
and (3) injecting compressed air with the air pressure not greater than 1MPa into the pre-stressed duct by aligning a compressed air pipe with the grouting pipe by adopting an air compressor so as to blow floating dust in the pre-stressed duct and check the connectivity of an insufficient grouting area in the pre-stressed duct.
8. The method for treating the underfill of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein in step S5, the grouting slurry is a prestressed duct grouting slurry for bridge, the water-cement ratio is 1:0.28, and the grouting pressure is 0.5 MPa.
9. The method for treating the underfilling of the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein in step S5, the grouting is stopped after maintaining the pressure for 3 min.
10. The method for treating insufficient grouting in the hogging moment prestressed duct of the continuous beam as claimed in claim 1, wherein the step S6 is specifically as follows:
and after the grouting is checked to be full and solidified, manually removing the grouting pipe and the grout outlet pipe by using an iron drill.
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| CN202010956318.2A CN111962407A (en) | 2020-09-11 | 2020-09-11 | Method for treating incomplete grouting of hogging moment prestress hole channel of continuous beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914222A (en) * | 2021-10-12 | 2022-01-11 | 中国路桥工程有限责任公司 | Prestressed pipeline grouting device and pressure drop method |
| CN115506221A (en) * | 2022-09-08 | 2022-12-23 | 中电建路桥集团有限公司 | Prefabricated box girder capable of controlling grouting fullness of beam pore canal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011021463A (en) * | 2009-06-19 | 2011-02-03 | Kyoritsu Enji Kk | Injection method for pc grout |
| CN103147400A (en) * | 2013-03-01 | 2013-06-12 | 天津第四市政建筑工程有限公司 | One-time tensioning construction method of super-long prestressed tendon for cast-in-place box girder bridge web |
| KR20130096369A (en) * | 2012-02-22 | 2013-08-30 | 우경기술주식회사 | Girder bridge which has psc tendon which can change pc strand |
| CN103469734A (en) * | 2013-09-25 | 2013-12-25 | 中铁十六局集团第三工程有限公司 | Negative-bending-moment corrugated pipe duct grouting construction method |
| CN109610331A (en) * | 2018-12-18 | 2019-04-12 | 中国五冶集团有限公司 | A kind of steel pipe of arch bridge inner concrete casting method and its device and application |
| 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 |
| CN211113192U (en) * | 2019-09-05 | 2020-07-28 | 中建四局贵州投资建设有限公司 | Bridge floor hogging moment grouting device for prestressed simply-supported beam bridge |
-
2020
- 2020-09-11 CN CN202010956318.2A patent/CN111962407A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011021463A (en) * | 2009-06-19 | 2011-02-03 | Kyoritsu Enji Kk | Injection method for pc grout |
| KR20130096369A (en) * | 2012-02-22 | 2013-08-30 | 우경기술주식회사 | Girder bridge which has psc tendon which can change pc strand |
| CN103147400A (en) * | 2013-03-01 | 2013-06-12 | 天津第四市政建筑工程有限公司 | One-time tensioning construction method of super-long prestressed tendon for cast-in-place box girder bridge web |
| CN103469734A (en) * | 2013-09-25 | 2013-12-25 | 中铁十六局集团第三工程有限公司 | Negative-bending-moment corrugated pipe duct grouting construction method |
| CN109610331A (en) * | 2018-12-18 | 2019-04-12 | 中国五冶集团有限公司 | A kind of steel pipe of arch bridge inner concrete casting method and its device and application |
| 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 |
| CN211113192U (en) * | 2019-09-05 | 2020-07-28 | 中建四局贵州投资建设有限公司 | Bridge floor hogging moment grouting device for prestressed simply-supported beam bridge |
Non-Patent Citations (6)
| Title |
|---|
| 于全吉;徐霄;张华;: "先简支后连续箱形梁桥负弯矩区孔道压浆不实的防治", 内蒙古科技与经济, no. 11, 15 June 2008 (2008-06-15) * |
| 康俊;: "高速公路桥梁施工中注浆技术的应用", 住宅与房地产, no. 05, 15 February 2017 (2017-02-15) * |
| 曹妍;王芮文;: "桥梁预应力孔道真空辅助压浆施工技术", 施工技术, no. 06, 18 June 2009 (2009-06-18) * |
| 翟海潮: "建筑粘合与防水材料应用手册", vol. 1, 30 June 2006, 中国石化出版社, pages: 157 - 158 * |
| 赵建铧;: "预应力孔道密实度检测的技术现状及发展趋势研究", 工程质量, no. 1, 30 May 2020 (2020-05-30) * |
| 陈震;: "T梁负弯矩压浆不密实的处理方法", 价值工程, no. 01, 8 January 2014 (2014-01-08), pages 1 - 7 * |
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| CN113914222A (en) * | 2021-10-12 | 2022-01-11 | 中国路桥工程有限责任公司 | Prestressed pipeline grouting device and pressure drop method |
| CN115506221A (en) * | 2022-09-08 | 2022-12-23 | 中电建路桥集团有限公司 | Prefabricated box girder capable of controlling grouting fullness of beam pore canal |
| CN115506221B (en) * | 2022-09-08 | 2024-05-17 | 中电建路桥集团有限公司 | Precast box girder capable of controlling Liang Kongdao grouting plumpness |
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