CN104196244B - Tandem circulation squeezing unit and mud jacking method - Google Patents
Tandem circulation squeezing unit and mud jacking method Download PDFInfo
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- CN104196244B CN104196244B CN201410455169.6A CN201410455169A CN104196244B CN 104196244 B CN104196244 B CN 104196244B CN 201410455169 A CN201410455169 A CN 201410455169A CN 104196244 B CN104196244 B CN 104196244B
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Abstract
nullThe invention discloses a kind of tandem circulation squeezing unit and mud jacking method，Described device includes slurry storing tank、There is manometric mudjack、Some prestressed pipes、Mud jacking mouth valve、Grout outlet valve、Enter to starch denseness detection meter and pulp denseness detection meter and madjack pipe，Prestressing force corrugated tube is parallel to be distributed in concrete pre-stress component，Some prestressing force corrugated tubes concatenation forms prestressed pipe group，Slurry storing tank、Mudjack and prestressed pipe group are sequentially connected in series formation closed circuit by madjack pipe，Mud jacking mouth valve is arranged on the madjack pipe between mudjack and prestressed pipe group，Grout outlet valve is arranged on the madjack pipe between prestressed pipe group and slurry storing tank，Enter to starch on the madjack pipe on the madjack pipe that denseness detection meter is arranged between slurry storing tank and mudjack or between mudjack and prestressed pipe group，Pulp denseness detection meter is arranged on the madjack pipe between prestressed pipe group and slurry storing tank，By circulation mud jacking, it can ensure that mud jacking is closely knit，And can prevent slurry pipe from blocking.
Description
Technical field
The invention belongs to the realm of building construction, particularly to a kind of tandem circulation squeezing unit and mud jacking method.
Background technology
In construction, in prestressing force corrugated tube Transducers Embedded in Concrete prestressed component in advance, after treating concreting, and after concrete reaches some strength, carry out in prestressing force corrugated tube duct connecting presstressed reinforcing steel (such as steel strand wires), after treating tension of prestressed tendon anchoring, carry out prestressing force corrugated tube hole path pressure grouting, serosity is made to fill up the gap of presstressed reinforcing steel and duct, presstressed reinforcing steel is firmly bonded as one with concrete, improve the intensity of concrete component, rigidity and bending resistance, prevent concrete component from crack occurring too early.
Tradition mud-jacking technology there will be the technical problems such as madjack pipe blocking, mud jacking leakiness often in construction.Madjack pipe blocking can cause to the work of follow-up mud jacking and have a strong impact on.And residual air is not discharged and causes mud jacking leakiness in prestressing force corrugated tube, additionally, due to slurry deadweight also results in top, prestressing force corrugated tube duct mud jacking leakiness.Mud jacking leakiness in prestressing force corrugated tube, can cause prestressed failure, steel strand wires corrosion, and steel strand wires relax, shorten the service life of concrete component.
Therefore, how to provide a kind of and can solve the problem that madjack pipe blocking, the construction method of prestressing force corrugated tube mud jacking leakiness problem and device, it has also become industry needs the technical problem of further improvement and optimization.
Summary of the invention
It is an object of the invention to provide a kind of tandem circulation squeezing unit and mud jacking method, to solve the existing problems such as madjack pipe of the prior art blocking, prestressed pipe mud jacking leakiness.
For solving above-mentioned technical problem, the present invention provides following technical scheme:
nullA kind of tandem circulation squeezing unit，Slurry storing tank、There is manometric mudjack、Some prestressing force corrugated tubes、Mud jacking mouth valve、Grout outlet valve、Enter to starch denseness detection meter and pulp denseness detection meter and madjack pipe，Described prestressed pipe is parallel to be distributed in concrete pre-stress component，Described some prestressing force corrugated tubes concatenation forms prestressed pipe group，Described slurry storing tank、Mudjack and prestressed pipe group are sequentially connected in series formation closed circuit by madjack pipe，Described mud jacking mouth valve is arranged on the madjack pipe between mudjack and prestressed pipe group，Described grout outlet valve is arranged on the madjack pipe between prestressed pipe group and slurry storing tank，Described enter to starch on the madjack pipe on the denseness detection madjack pipe that is arranged between slurry storing tank and mudjack of meter or between mudjack and prestressed pipe group，Described pulp denseness detection meter is arranged on the madjack pipe between described prestressed pipe group and slurry storing tank.
Preferably, in above-mentioned tandem circulation squeezing unit, also include that pulper, described pulper are connected with described slurry storing tank.
Preferably, in above-mentioned tandem circulation squeezing unit, the described prestressing force corrugated tube that described madjack pipe is corresponding with described prestressed pipe group uses threaded.
The invention also discloses a kind of tandem circulation mud jacking method, use tandem circulation squeezing unit as above, including: open described mud jacking mouth valve, grout outlet valve, start mudjack, control the pressure of mud jacking not less than 2.0Mpa, if finding during mud jacking, described Pressure gauge data rise rapidly, mud jacking should be stopped immediately, after checking madjack pipe blocking position section by section and dredging, carry out mud jacking again, when pulp denseness is consistent with entering to starch denseness, close described grout outlet valve, 2.0Mpa pressure above is kept two minutes in making prestressing force corrugated tube, close described mud jacking mouth valve and described mudjack the most successively, thus prestressing force ripple ipe grout completes.
Preferably, in above-mentioned tandem circulation mud jacking method, also include that pulper, described pulper are connected with described slurry storing tank.
Preferably, in above-mentioned tandem circulation mud jacking method, the described prestressing force corrugated tube that described madjack pipe is corresponding with described prestressed pipe group uses threaded.
Compare tradition mud-jacking technology construction often there will be madjack pipe blocking, mud jacking leakiness and cause prestressed failure; steel strand wires corrosion; the problems such as steel strand wires relax, and service life of concrete component is short, due to the fact that employing said structure has the advantages that
(1) series circulation mud jacking: the tandem circulation squeezing unit of present invention offer and mud jacking method, use the series connection of prestressing force corrugated tube and the mentality of designing of circulation mud jacking, ensure serosity persistent loop in prestressed pipe, such that it is able to the air in prestressing force corrugated tube is completely exhausted out, air chamber or air bin is not had in the serosity filled in ensureing prestressing force corrugated tube, make in prestressing force corrugated tube that mud jacking is the most closely knit can make concrete slurry preferably enrich in whole prestressing force corrugated tube, and then the presstressed reinforcing steel in prestressing force corrugated tube is integrated with concrete secure bond, guarantee prestressed effectiveness, improve the intensity of concrete component, rigidity and bending resistance, prevent concrete component from crack occurring too early；
(2) effective supervision, Stress control: the present invention carries out the most effectively observing and controlling to circulation mud jacking process, wherein, manometric Main Function on mudjack is the pressure of monitoring stock inlet, if finding during mud jacking, described Pressure gauge data rise rapidly, mud jacking should be stopped immediately, after checking madjack pipe blocking position section by section and dredging, then carry out mud jacking；Enter to starch denseness detection meter and detect, with pulp denseness, the denseness that the Main Function counted is monitoring circulation mud jacking, when the denseness of the serosity that both detect is consistent, showing that the slurry consistency of prestressed pipe group gateway is consistent, serosity has enriched prestressed pipe, also indicates that mud jacking work can terminate；Mud jacking mouth valve, the Main Function of grout outlet valve are the pressure controlling circulation mud jacking system, guarantee that mud jacking is continuously, slowly, carry out equably, to be further ensured that the prestressing force liquid-tight reality of corrugated tube entoplasm, above-mentioned parts are used can mud jacking process effectively to be supervised, not only can find that madjack pipe blocks in time, and closely knit by ensureing mud jacking, improve the safety and reliability of mud-jacking technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of the tandem circulation squeezing unit of the embodiment of the present invention 1；
In figure: 1, pulper；2, slurry storing tank；3, mudjack；4, high pressure madjack pipe；5, mud jacking mouth valve；6, grout outlet valve；7, prestressing force corrugated tube；8, concrete pre-stress component；9, denseness detection is entered to starch；10, pulp denseness detection.
Detailed description of the invention
The central idea of the present invention is, use prestressed pipe series connection and the mentality of designing of circulation mud jacking, ensure serosity persistent loop in prestressing force corrugated tube, such that it is able to the air in prestressing force corrugated tube is completely exhausted out, air chamber or air bin is not had in the serosity filled in ensureing prestressing force corrugated tube, make in prestressing force corrugated tube that mud jacking is the most closely knit can make concrete slurry preferably enrich in whole prestressing force corrugated tube, and then the presstressed reinforcing steel in prestressing force corrugated tube is integrated with concrete secure bond, guarantee prestressed effectiveness, improve the intensity of concrete component, rigidity and bending resistance, prevent concrete component from crack occurring too early.
The tandem circulation squeezing unit proposed the present invention below in conjunction with the drawings and specific embodiments is described in further detail.According to following explanation and claims, advantages and features of the invention will be apparent from.It should be noted that, accompanying drawing all uses the form simplified very much and all uses non-ratio accurately, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
In conjunction with Fig. 1, present embodiment discloses a kind of tandem circulation squeezing unit, including: slurry storing tank 2, there is manometric mudjack 3, some prestressing force corrugated tubes 7, mud jacking mouth valve 5, grout outlet valve 6 and madjack pipe 4, the parallel concrete component that is distributed in of described prestressing force corrugated tube 7 is in concrete pre-stress component 8, described some prestressing force corrugated tubes 7 concatenation forms prestressed pipe group, described slurry storing tank 2, mudjack 3 and prestressed pipe group are sequentially connected in series i.e. series connection by madjack pipe 4 and form closed circuit, described mud jacking mouth valve 5 is arranged on the madjack pipe 4 between mudjack 3 and prestressed pipe group, described grout outlet valve 6 is arranged on the madjack pipe 4 between prestressed pipe group and slurry storing tank 2.The Main Function of described slurry storing tank 2 is to store serosity, and the Main Function of described mudjack 3 is to provide power and is carried to beam body from slurry storing tank 2 by serosity.By described some prestressing force corrugated tubes 7 being concatenated formation prestressed pipe group, described slurry storing tank 2, mudjack 3 and prestressed pipe group are sequentially connected in series formation closed circuit by madjack pipe 4, ensure that serosity persistent loop in prestressing force corrugated tube 7, such that it is able to the air in prestressing force corrugated tube 7 is completely exhausted out, air chamber or air bin is not had in the serosity filled in ensureing prestressing force corrugated tube 7, in making prestressing force corrugated tube 7, mud jacking is the most closely knit, and then the presstressed reinforcing steel in prestressing force corrugated tube 7 is integrated with concrete secure bond, guarantee prestressed effectiveness, improve the intensity of concrete component, rigidity and bending resistance, prevent concrete component from crack occurring too early.Additionally, the manometric Main Function on mudjack 3 is the pressure of monitoring stock inlet, if finding during mud jacking, described Pressure gauge data rise rapidly, should stop mud jacking immediately, after checking madjack pipe 4 blocking position section by section and dredging, then carry out mud jacking；The Main Function entering to starch denseness detection meter 9 and pulp denseness detection meter 10 is the denseness of monitoring circulation mud jacking, when the denseness of the serosity that both detect is consistent, show that the slurry consistency of prestressed pipe group gateway is consistent, serosity has enriched prestressing force corrugated tube 7, also indicates that mud jacking work can terminate；Mud jacking mouth valve 5, the Main Function of grout outlet valve 6 be control circulation mud jacking system pressure, it is ensured that mud jacking continuously, slowly, carry out equably, to be further ensured that the prestressing force corrugated tube 7 liquid-tight reality of entoplasm.By using above-mentioned detection part i.e. Pressure gauge, mud jacking mouth valve 5, grout outlet valve 6, entering to starch denseness detection meter 9 and count with the detection of pulp denseness and 10 mud jacking process effectively can be supervised, not only can find that madjack pipe 4 blocks in time, and can ensure that mud jacking is closely knit, improve the safety and reliability of mud-jacking technology.
Preferably, in above-mentioned tandem circulation squeezing unit, also include that pulper 1, described pulper 1 are connected with described slurry storing tank 2.The Main Function of described pulper 1 is mixing serosity.By arranging pulper 1, on-the-spot slurrying can be carried out, facilitate site operation.
Preferably, in above-mentioned tandem circulation squeezing unit, the described prestressing force corrugated tube 7 that described madjack pipe 4 is corresponding with described prestressed pipe group uses threaded and uses sealing ring to seal.The described prestressing force corrugated tube 7 that described madjack pipe 4 is corresponding with described prestressed pipe group uses threaded, has advantage easy to connect, that be easy to sealing.
The invention also discloses a kind of tandem circulation mud jacking method, use tandem circulation squeezing unit as above, including: open described mud jacking mouth valve 5, grout outlet valve 6, start mudjack 3, control the pressure of mud jacking not less than 2.0Mpa, pressure less than 2.0Mpa, slurry flow rate is too low, grouting result is bad, if finding during mud jacking, described Pressure gauge data rise rapidly, mud jacking should be stopped immediately, after checking madjack pipe 4 blocking position section by section and dredging, carry out mud jacking again, when pulp denseness is consistent with entering to starch denseness, close described grout outlet valve 6, 2.0Mpa pressure above is kept two minutes in making the duct of prestressing force corrugated tube 7, close described mud jacking mouth valve 5 and described mudjack 3 the most successively, thus the duct grouting of prestressing force corrugated tube 7 completes.Described pulp denseness is consistent with entering to starch denseness, is that fingering slurry denseness detection meter 9 is consistent with the denseness of the serosity that pulp denseness detection meter 10 detects, shows that serosity has enriched prestressing force corrugated tube 7, also indicate that mud jacking work can terminate.Wherein, keep 2.0Mpa pressure above two minutes in making the duct of prestressing force corrugated tube 7, be that mud jacking has worked in order to confirm prestressing force corrugated tube 7 intrinsic pressure strong stability.
In sum, the tandem circulation squeezing unit of present invention offer and mud jacking method, use the series connection of prestressing force corrugated tube and the mentality of designing of circulation mud jacking, ensure serosity persistent loop in prestressing force corrugated tube, such that it is able to the air in prestressing force corrugated tube is completely exhausted out, air chamber or air bin is not had in the serosity filled in ensureing prestressing force corrugated tube, make in prestressing force corrugated tube that mud jacking is the most closely knit can make concrete slurry preferably enrich in whole prestressed pipe, and then the presstressed reinforcing steel in prestressing force corrugated tube is integrated with concrete secure bond, guarantee prestressed effectiveness, improve the intensity of concrete component, rigidity and bending resistance, prevent concrete component from crack occurring too early.
Further, the present invention can carry out the most effectively observing and controlling to circulation mud jacking process, can be monitored the pressure of stock inlet by the Pressure gauge on mudjack, if finding during mud jacking, described Pressure gauge data rise rapidly, mud jacking should be stopped immediately, after checking madjack pipe blocking position section by section and dredging, then carry out mud jacking；The denseness of circulation mud jacking can be monitored by entering to starch denseness detection meter and pulp denseness detection meter, when the denseness of the serosity that both detect is consistent, showing that the slurry consistency of prestressed pipe group gateway is consistent, serosity has enriched prestressed pipe, also indicates that mud jacking work can terminate；Can control to circulate the pressure of mud jacking system by mud jacking mouth valve, grout outlet valve, guarantee that mud jacking is continuously, slowly, carry out equably, to be further ensured that the prestressing force liquid-tight reality of corrugated tube entoplasm, above-mentioned parts are used can mud jacking process effectively to be supervised, not only can find that madjack pipe blocks in time, and closely knit by ensureing mud jacking, improve the safety and reliability of mud-jacking technology.
Claims (6)
1. a tandem circulation squeezing unit, it is characterised in that including: slurry storing tank, there is Pressure gauge
Mudjack, some prestressing force corrugated tubes, mud jacking mouth valve, grout outlet valve, enter to starch denseness detection meter with
Pulp denseness detection meter and madjack pipe, described prestressing force corrugated tube is parallel is distributed in concrete pre-stress component
In, described some prestressing force corrugated tubes concatenation forms prestressed pipe group, described slurry storing tank, mudjack and pre-
Stress tube group is sequentially connected in series formation closed circuit by madjack pipe, described mud jacking mouth valve be arranged at mudjack with
On madjack pipe between prestressed pipe group, described grout outlet valve is arranged between prestressed pipe group and slurry storing tank
Madjack pipe on, described in enter to starch on the denseness detection madjack pipe that is arranged between slurry storing tank and mudjack of meter or
On madjack pipe between mudjack and prestressed pipe group, described pulp denseness detection meter is arranged at described prestressing force
On madjack pipe between Guan Zuyu slurry storing tank.
2. tandem circulation squeezing unit as claimed in claim 1, it is characterised in that also include slurrying
Machine, described pulper is connected with described slurry storing tank.
3. tandem circulation squeezing unit as claimed in claim 1, it is characterised in that described madjack pipe
The described prestressing force corrugated tube corresponding with described prestressed pipe group uses threaded.
4. a tandem circulation mud jacking method, it is characterised in that use as any in claim 1-3
One described tandem circulation squeezing unit, including: open described mud jacking mouth valve, grout outlet valve,
Starting mudjack, the pressure controlling mud jacking is not less than 2.0Mpa, if finding described Pressure gauge data during mud jacking
Rise rapidly, mud jacking should be stopped immediately, after checking madjack pipe blocking position section by section and dredging, then carry out mud jacking,
When pulp denseness is consistent with entering to starch denseness, close described grout outlet valve, keep in making prestressed pipe
2.0Mpa pressure above two minutes, then close described mud jacking mouth valve and described mudjack successively, thus
Prestressing force ripple ipe grout completes.
5. tandem circulation mud jacking method as claimed in claim 4, it is characterised in that also include slurrying
Machine, described pulper is connected with described slurry storing tank.
6. tandem circulation mud jacking method as claimed in claim 4, it is characterised in that described madjack pipe
The described prestressing force corrugated tube corresponding with described prestressed pipe group uses threaded.
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| CN201410455169.6A CN104196244B (en) | 2014-09-09 | 2014-09-09 | Tandem circulation squeezing unit and mud jacking method |
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| CN201410455169.6A CN104196244B (en) | 2014-09-09 | 2014-09-09 | Tandem circulation squeezing unit and mud jacking method |
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| CN104196244B true CN104196244B (en) | 2016-08-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532844B (en) * | 2014-12-26 | 2017-02-01 | 柳州黔桥工程材料有限公司 | Anti-slurry-leakage circulating intelligent slurry making and pressing system |
| CN106869033A (en) * | 2017-03-09 | 2017-06-20 | 中铁十九局集团有限公司 | The box girder pre-stressed pipeline pneumatic mortar packing control method of large-sized concrete |
| CN107675888A (en) * | 2017-09-22 | 2018-02-09 | 中国建筑土木建设有限公司 | Circulate mud jacking system and its circulation mud jacking method |
| CN108590189A (en) * | 2018-05-30 | 2018-09-28 | 宁波普利凯建筑科技有限公司 | A kind of provisions for grouting and its construction method of prefabricated components |
| CN115070932A (en) * | 2022-06-23 | 2022-09-20 | 保利长大工程有限公司 | Prefabricating method of high-stability curved plate beam |
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| JPH08100530A (en) * | 1994-09-30 | 1996-04-16 | P C Kyoryo Kk | Confirmation method for injection or discharge of grout for post-tension prestressed concrete and device therefor |
| CN202519708U (en) * | 2012-04-17 | 2012-11-07 | 中铁十二局集团第三工程有限公司 | Mobile grouting device for concrete shrinkage crack grouting |
| CN103132454A (en) * | 2013-01-23 | 2013-06-05 | 上海市基础工程有限公司 | Mud jacking device used for pre-stressed pipeline |
| CN204174942U (en) * | 2014-09-09 | 2015-02-25 | 上海建工七建集团有限公司 | Tandem circulation squeezing unit |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08100530A (en) * | 1994-09-30 | 1996-04-16 | P C Kyoryo Kk | Confirmation method for injection or discharge of grout for post-tension prestressed concrete and device therefor |
| CN202519708U (en) * | 2012-04-17 | 2012-11-07 | 中铁十二局集团第三工程有限公司 | Mobile grouting device for concrete shrinkage crack grouting |
| CN103132454A (en) * | 2013-01-23 | 2013-06-05 | 上海市基础工程有限公司 | Mud jacking device used for pre-stressed pipeline |
| CN204174942U (en) * | 2014-09-09 | 2015-02-25 | 上海建工七建集团有限公司 | Tandem circulation squeezing unit |
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