CN104196244A - Serial-connection circulating pressure grouting device and pressure grouting method - Google Patents
Serial-connection circulating pressure grouting device and pressure grouting method Download PDFInfo
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- CN104196244A CN104196244A CN201410455169.6A CN201410455169A CN104196244A CN 104196244 A CN104196244 A CN 104196244A CN 201410455169 A CN201410455169 A CN 201410455169A CN 104196244 A CN104196244 A CN 104196244A
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- mud jacking
- pressure grouting
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Abstract
The invention discloses a serial-connection circulating pressure grouting device and a pressure grouting method. The device comprises a grout storage barrel, a pressure grouting pump with a pressure gage, a plurality of prestressed pipes, a pressure grouting port valve, a grout outlet valve, an inflow grout thickness detector, an outflow grout thickness detector and pressure grouting pipes. The prestressed corrugated pipes are distributed in a concrete prestressed component in parallel and connected in series to form a prestressed pipe bundle, the grout storage barrel, the pressure grouting pump and the prestressed pipe bundle are sequentially connected in series through the pressure grouting pipes to form a circulating loop, the pressure grouting port valve is arranged on the pressure grouting pipe between the pressure grouting pump and the prestressed pipe bundle, the grout outlet valve is arranged on the pressure grouting pipe between the prestressed pipe bundle and the grout storage barrel, the inflow grout thickness detector is arranged on the pressure grouting pipe between the grout storage barrel and the pressure grouting pump or on the pressure grouting pipe between the pressure grouting pump and the prestressed pipe bundle, the outflow grout thickness detector is arranged on the pressure grouting pipe between the prestressed pipe bundle and the grout storage barrel, compact pressure grouting can be guaranteed through circulating pressure grouting, and grout pipes can be prevented from being blocked.
Description
Technical field
The invention belongs to the realm of building construction, particularly a kind of tandem circulation squeezing unit and mud jacking method.
Background technology
In building operations, prestressing force bellows is in advance in Transducers Embedded in Concrete prestressed member, after treating concreting, and concrete reaches after some strength, in prestressing force bellows duct, connect presstressed reinforcing steel (for example steel strand), after treating tension of prestressed tendon anchoring, carry out prestressing force bellows hole path pressure grouting, make slurries fill up the gap in presstressed reinforcing steel and duct, presstressed reinforcing steel and concrete are firmly bonded as one, the intensity, rigidity and the bending resistance that improve concrete component, prevent that crack from appearring in concrete component too early.
Tradition mud jacking technique there will be the technical problems such as madjack pipe obstruction, mud jacking leakiness often in construction.Madjack pipe obstruction meeting causes and has a strong impact on to follow-up mud jacking work.And residual air is not discharged from and causes mud jacking leakiness in prestressing force bellows, in addition, because slurry deadweight also can cause top, prestressing force bellows duct mud jacking leakiness.Mud jacking leakiness in prestressing force bellows, can cause prestressed failure, steel strand corrosion, and steel strand are lax, shortened the application life of concrete component.
Therefore, how to provide a kind of construction method and device that can solve madjack pipe obstruction, prestressing force bellows mud jacking leakiness problem, become the technical problem that industry needs further improvement and optimization.
Summary of the invention
The object of the present invention is to provide a kind of tandem circulation squeezing unit and mud jacking method, to solve the existing problems such as madjack pipe obstruction of the prior art, prestressed pipe mud jacking leakiness.
For solving the problems of the technologies described above, the invention provides following technical scheme:
A kind of tandem circulation squeezing unit, slurry storing tank, there is manometric mudjack, some prestressing force bellowss, mud jacking mouth valve, grout outlet valve, enter to starch denseness and detect meter and pulp denseness detection meter and madjack pipe, described prestressed pipe is parallel to be distributed in concrete pre-stress member, described some prestressing force bellows serial connections form prestressed pipe group, described slurry storing tank, mudjack and prestressed pipe group are connected in series formation closed circuit successively 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 denseness detect meter be arranged on the madjack pipe between slurry storing tank and mudjack or mudjack and prestressed pipe group between madjack pipe on, described pulp denseness detects meter and is arranged on the madjack pipe between described prestressed pipe group and slurry storing tank.
Preferably, in above-mentioned tandem circulation squeezing unit, also comprise pulper, described pulper is connected with described slurry storing tank.
Preferably, in above-mentioned tandem circulation squeezing unit, described madjack pipe is threaded with described prestressing force bellows employing corresponding in described prestressed pipe group.
The invention also discloses a kind of tandem circulation mud jacking method, adopt tandem circulation squeezing unit as above, comprise: open described mud jacking mouth valve, grout outlet valve, start mudjack, the pressure of controlling mud jacking is not less than 2.0Mpa, if find during mud jacking, described pressure meter data rise rapidly, should stop immediately mud jacking, check section by section after madjack pipe blocking position dredging, carry out again mud jacking, until pulp denseness with enter to starch denseness when consistent, close described grout outlet valve, make to keep in prestressing force bellows 2.0Mpa with upward pressure two minutes, close successively more described mud jacking mouth valve and described mudjack, thereby prestressing force ripple ipe grout completes.
Preferably, in above-mentioned tandem circulation mud jacking method, also comprise pulper, described pulper is connected with described slurry storing tank.
Preferably, in above-mentioned tandem circulation mud jacking method, described madjack pipe is threaded with described prestressing force bellows employing corresponding in described prestressed pipe group.
Compare that traditional mud jacking technique there will be in construction that madjack pipe stops up often, mud jacking leakiness and cause prestressed failure; steel strand corrosion; the problems such as steel strand are lax, and application life of concrete component is short, the present invention is owing to adopting said structure to have following beneficial effect:
(1) series circulation mud jacking: tandem circulation squeezing unit provided by the invention and mud jacking method, adopt the mentality of designing of the series connection of prestressing force bellows and circulation mud jacking, guarantee that slurries continue circulation in prestressed pipe, thereby the air in prestressing force bellows can be discharged completely, in the slurries that guarantee to fill in prestressing force bellows, there is no air chamber or air bin, make the fully closely knit concrete slurry that can make of mud jacking in prestressing force bellows better enrich in whole prestressing force bellows, and then presstressed reinforcing steel and concrete secure bond in prestressing force bellows are integrated, guarantee prestressed validity, improve the intensity of concrete component, rigidity and bending resistance, prevent that crack from appearring in concrete component too early,
(2) effectively supervision, pressure are controlled: the present invention carries out effectively observing and controlling in real time to circulation mud jacking process, wherein, manometric Main Function on mudjack is the pressure of monitoring stock inlet, if find during mud jacking, described pressure meter data rise rapidly, should stop immediately mud jacking, check section by section after madjack pipe blocking position dredging, then carry out mud jacking; Entering to starch denseness detection meter is the denseness of monitoring circulation mud jacking with the Main Function that pulp denseness detects meter, when the denseness of the slurries that detect when both is consistent, the slurry consistency that shows prestressed pipe group access is consistent, and slurries have enriched prestressed pipe, also just show that mud jacking work can finish; The Main Function of mud jacking mouth valve, grout outlet valve is the pressure of controlled circulation mud jacking system, guarantee that mud jacking continuously, slowly, carry out equably, further to guarantee the liquid-tight reality of prestressing force bellows entoplasm, adopt above-mentioned parts effectively to supervise mud jacking process, not only can find in time that madjack pipe stops up, and pass through to guarantee that mud jacking is closely knit, improved the safety and reliability of mud jacking technique.
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 bellows; 8, concrete pre-stress member; 9, entering to starch denseness detects; 10, pulp denseness detects.
The specific embodiment
Central idea of the present invention is, adopt the mentality of designing of prestressed pipe series connection and circulation mud jacking, guarantee that slurries continue circulation in prestressing force bellows, thereby the air in prestressing force bellows can be discharged completely, in the slurries that guarantee to fill in prestressing force bellows, there is no air chamber or air bin, make the fully closely knit concrete slurry that can make of mud jacking in prestressing force bellows better enrich in whole prestressing force bellows, and then presstressed reinforcing steel and concrete secure bond in prestressing force bellows are integrated, guarantee prestressed validity, improve the intensity of concrete component, rigidity and bending resistance, prevent that crack from appearring in concrete component too early.
Tandem circulation squeezing unit the present invention being proposed below in conjunction with the drawings and specific embodiments is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the object of the aid illustration embodiment of the present invention lucidly.
In conjunction with Fig. 1, the present embodiment discloses a kind of tandem circulation squeezing unit, comprise: slurry storing tank 2, there is manometric mudjack 3, some prestressing force bellowss 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 bellows 7 is in concrete pre-stress member 8, described some prestressing force bellowss 7 serial connections form prestressed pipe group, described slurry storing tank 2, mudjack 3 and prestressed pipe group are connected in series successively 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 slurries, and the Main Function of described mudjack 3 is to provide power slurries are carried from slurry storing tank 2 to beam body.By described some prestressing force bellows 7 serial connections are formed to prestressed pipe group, described slurry storing tank 2, mudjack 3 and prestressed pipe group are connected in series successively and are formed closed circuit by madjack pipe 4, can guarantee that slurries continue circulation in prestressing force bellows 7, thereby the air in prestressing force bellows 7 can be discharged completely, guaranteeing does not have air chamber or air bin in prestressing force bellows 7 interior filled slurries, make the interior mud jacking of prestressing force bellows 7 fully closely knit, and then presstressed reinforcing steel and concrete secure bond in prestressing force bellows 7 are integrated, guarantee prestressed validity, improve the intensity of concrete component, rigidity and bending resistance, prevent that crack from appearring in concrete component too early.In addition, the manometric Main Function on mudjack 3 is the pressure of monitoring stock inlet, if find that described pressure meter data rise rapidly during mud jacking, should stop immediately mud jacking, checks section by section after madjack pipe 4 blocking positions dredging, then carries out mud jacking; Entering to starch denseness detection meter 9 is the denseness of monitoring circulation mud jacking with the Main Function that pulp denseness detects meter 10, when the denseness of the slurries that detect when both is consistent, the slurry consistency that shows prestressed pipe group access is consistent, slurries have enriched prestressing force bellows 7, also just show that mud jacking work can finish; The Main Function of mud jacking mouth valve 5, grout outlet valve 6 is the pressure of controlled circulation mud jacking system, guarantee mud jacking continuously, slowly, carry out equably, further to guarantee the liquid-tight reality of prestressing force bellows 7 entoplasm.By adopting above-mentioned detection part, be pressure meter, mud jacking mouth valve 5, grout outlet valve 6, enter to starch denseness and detect meter 9 and detect meter 10 with pulp denseness and can effectively supervise mud jacking process, not only can find in time that madjack pipe 4 stops up, and can guarantee that mud jacking is closely knit, improved the safety and reliability of mud jacking technique.
Preferably, in above-mentioned tandem circulation squeezing unit, also comprise pulper 1, described pulper 1 is connected with described slurry storing tank 2.The Main Function of described pulper 1 is mixing slurries.By pulper 1 is set, can carry out on-the-spot slurrying, facilitate site operation.
Preferably, in above-mentioned tandem circulation squeezing unit, described madjack pipe 4 is threaded and uses sealing ring sealing with described prestressing force bellows 7 employings corresponding in described prestressed pipe group.Described madjack pipe 4 adopts and is threaded with described prestressing force bellows corresponding in described prestressed pipe group 7, have advantages of easy to connect, be convenient to sealing.
The invention also discloses a kind of tandem circulation mud jacking method, adopt tandem circulation squeezing unit as above, comprise: open described mud jacking mouth valve 5, grout outlet valve 6, start mudjack 3, the pressure of controlling mud jacking is not less than 2.0Mpa, be less than the pressure of 2.0Mpa, slurry flow rate is too low, grouting result is bad, if find during mud jacking, described pressure meter data rise rapidly, should stop immediately mud jacking, check section by section after madjack pipe 4 blocking positions dredging, carry out again mud jacking, until pulp denseness with enter to starch denseness when consistent, close described grout outlet valve 6, make to keep in the duct of prestressing force bellows 7 2.0Mpa with upward pressure two minutes, close successively more described mud jacking mouth valve 5 and described mudjack 3, thereby the duct grouting of prestressing force bellows 7 completes.Described pulp denseness is with to enter to starch denseness consistent, is that fingering slurry denseness detects meter 9 consistent with the denseness that pulp denseness detects meter 10 slurries that detect, and shows substantial prestressing force bellows 7 of slurries, also just shows that mud jacking work can finish.Wherein, making to keep in the duct of prestressing force bellows 7 2.0Mpa with upward pressure two minutes, is stable in order to confirm the interior pressure of prestressing force bellows 7, and mud jacking work completes.
In sum, tandem circulation squeezing unit provided by the invention and mud jacking method, adopt the mentality of designing of the series connection of prestressing force bellows and circulation mud jacking, guarantee that slurries continue circulation in prestressing force bellows, thereby the air in prestressing force bellows can be discharged completely, in the slurries that guarantee to fill in prestressing force bellows, there is no air chamber or air bin, make the fully closely knit concrete slurry that can make of mud jacking in prestressing force bellows better enrich in whole prestressed pipe, and then presstressed reinforcing steel and concrete secure bond in prestressing force bellows are integrated, guarantee prestressed validity, improve the intensity of concrete component, rigidity and bending resistance, prevent that crack from appearring in concrete component too early.
And, the present invention can carry out effectively observing and controlling in real time to circulation mud jacking process, by the pressure meter on mudjack, can monitor the pressure of stock inlet, if find during mud jacking, described pressure meter data rise rapidly, should stop immediately mud jacking, check section by section after madjack pipe blocking position dredging, then carry out mud jacking; By entering to starch, denseness detects meter and pulp denseness detects the denseness that meter can be monitored circulation mud jacking, when the denseness of the slurries that detect when both is consistent, the slurry consistency that shows prestressed pipe group access is consistent, and slurries have enriched prestressed pipe, also just show that mud jacking work can finish; Pressure that can controlled circulation mud jacking system by mud jacking mouth valve, grout outlet valve, guarantee that mud jacking continuously, slowly, carry out equably, further to guarantee the liquid-tight reality of prestressing force bellows entoplasm, adopt above-mentioned parts effectively to supervise mud jacking process, not only can find in time that madjack pipe stops up, and pass through to guarantee that mud jacking is closely knit, improved the safety and reliability of mud jacking technique.
Claims (6)
1. a tandem circulation squeezing unit, it is characterized in that, comprise: slurry storing tank, there is manometric mudjack, some prestressing force bellowss, mud jacking mouth valve, grout outlet valve, enter to starch denseness and detect meter and pulp denseness detection meter and madjack pipe, described prestressing force bellows is parallel to be distributed in concrete pre-stress member, described some prestressing force bellows serial connections form prestressed pipe group, described slurry storing tank, mudjack and prestressed pipe group are connected in series formation closed circuit successively 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 denseness detect meter be arranged on the madjack pipe between slurry storing tank and mudjack or mudjack and prestressed pipe group between madjack pipe on, described pulp denseness detects meter and is arranged on the madjack pipe between described prestressed pipe group and slurry storing tank.
2. tandem circulation squeezing unit as claimed in claim 1, is characterized in that, also comprises pulper, and described pulper is connected with described slurry storing tank.
3. tandem circulation squeezing unit as claimed in claim 1, is characterized in that, described madjack pipe is threaded with described prestressing force bellows employing corresponding in described prestressed pipe group.
4. a tandem circulation mud jacking method, it is characterized in that, the tandem circulation squeezing unit of employing as described in any one in claim 1-3, comprise: open described mud jacking mouth valve, grout outlet valve, start mudjack, the pressure of controlling mud jacking is not less than 2.0Mpa, if find during mud jacking, described pressure meter data rise rapidly, should stop immediately mud jacking, check section by section after madjack pipe blocking position dredging, carry out again mud jacking, until pulp denseness with enter to starch denseness when consistent, close described grout outlet valve, make to keep in prestressed pipe 2.0Mpa with upward pressure two minutes, close successively more described mud jacking mouth valve and described mudjack, thereby prestressing force ripple ipe grout completes.
5. tandem circulation mud jacking method as claimed in claim 4, is characterized in that, also comprises pulper, and described pulper is connected with described slurry storing tank.
6. tandem circulation mud jacking method as claimed in claim 4, is characterized in that, described madjack pipe is threaded with described prestressing force bellows employing corresponding in described prestressed pipe group.
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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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104532844A (en) * | 2014-12-26 | 2015-04-22 | 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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| 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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| 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 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532844A (en) * | 2014-12-26 | 2015-04-22 | 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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| CN104196244B (en) | 2016-08-24 |
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