CN103758049A - Bridge jacking system and jacking method thereof - Google Patents
Bridge jacking system and jacking method thereof Download PDFInfo
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- CN103758049A CN103758049A CN201410043693.2A CN201410043693A CN103758049A CN 103758049 A CN103758049 A CN 103758049A CN 201410043693 A CN201410043693 A CN 201410043693A CN 103758049 A CN103758049 A CN 103758049A
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Abstract
The invention discloses a bridge jacking system and a jacking method of the bridge jacking system. A plurality of two-stage single-action jacks are arranged at the bottom of a bridge, and oil mass control hydraulic power stations drive the jacks to slightly and synchronously rise and fall. Due to the fact that the two-stage single-action jacks are arranged, first-stage pre-jacking can be conducted firstly so that gaps and elastic deformation can be eliminated, and then second-stage formal jacking is conducted. The defect that a piston is disengaged from a cylinder body can be overcome, and the multi-point jacking synchronization controllable function and the jack on-load falling controllable function are achieved through jacking and falling synchronous control achieved by accurately metering the size of hydraulic oil entering and leaving each jack, and therefore the structure safety is effectively ensured in the bridge jacking process.
Description
Technical field
The present invention relates to bridge jacking and the beam technology that falls, more particularly, relate to a kind of bridge jacking system and its raising method.
Background technology
In bridge jacking engineering in the past, the mode that jack-up system generally adopts PLC synchronous control system and double-action jack to combine, controls synchronization of jacking up and the landing of many group jack by many displacement transducers of this system.And be in the bridge jacking and bearing replacement engineering of freely-supported plate-girder, T-shaped beam or little case beam at upper structure type, (current double-action jack is due to technical limitations often because the space between beam body and substructure is too little, large stroke double-acting jack cannot to be directly installed, it is highly that cannot to reach 4mm following), the PLC synchronous control system that slim (being highly less than 4mm) single-acting jack can only be installed and be equipped with displacement control is implemented micro-jacking.But this micro-raising method has following three defects: the control point of displacement limited amount of the one, PLC synchronous control system, and in above-mentioned bridge jacking and bearing replacement engineering, the required jack number of single jacking is more, so a general control point of displacement can be controlled one group, comprise many jack enforcement synchronizations of jacking up, thereby cause the displacement synchronous between interior each the jack of same group of jack uncontrollable.The 2nd, due to slim single-acting jack stroke very little (1～2cm), in jacking process, indivedual jack are prone to piston and depart from cylinder body, cause the consequence of jacking failure after leakage of oil.The 3rd, limited by jack body height, slim jack is single-acting jack, by PLC, can control synchronization of jacking up, but because hydraulic power unit is in the past with oil pressure, displacement control, the uncontrollable single-acting jack of its technical limitations synchronously falls, so generally can only lean on the lower drop of pressure of beam body deadweight while falling beam.Due to above three defects, in jacking and while falling beam operation, can cause damage to the association structure between the beam body of bridge and beam body.
Summary of the invention
For the above-mentioned shortcoming existing in prior art, the object of this invention is to provide a kind of bridge jacking system and its raising method, can realize synchronization of jacking up and landing, eliminate the phenomenon that slim jack piston departs from cylinder body, effectively guarantee jacking and the structural safety of the beam operation that falls.
For achieving the above object, the present invention adopts following technical scheme:
On the one hand, a kind of bridge jacking system, comprise twin-stage single-acting jack and fuel-flow control hydraulic power unit, many identical twin-stage single-acting jack are located at respectively between the beam body and its underpart structure for the treatment of jacking bridge, and every twin-stage single-acting jack includes cylinder body, is located at the oil-in of cylinder body one side and is located at the inside and outside two-stage piston in cylinder body; Fuel-flow control hydraulic power unit is connected with the oil-in of twin-stage single-acting jack respectively by fuel feed pump, fuel-flow control hydraulic power unit also has PLC, and by PLC, record the motor revolution of hydraulic pump, according to revolution, export the hydraulic oil of respective volume amount, with what control every twin-stage single-acting jack, carry out synchronization of jacking up and landing.
Described every four twin-stage single-acting jack are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit.
Between many described fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set.
The height of cylinder of described twin-stage single-acting jack is less than 4mm.
On the other hand, a kind of bridge jacking method, comprises the following steps:
A. treating, between the beam body downside of jacking bridge and its underpart structure, many twin-stage single-acting jack are installed, and at jack upper and lower end several steel plates of cushioning padding respectively;
B. the oil-in of jack is connected to respectively to corresponding fuel-flow control hydraulic power unit by fuel feed pump, between many fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set;
C. by the inner carrier of all jack of fuel-flow control hydraulic power unit control, with outer piston, ejected simultaneously, carry out one-level and synchronously try jacking, in order to eliminate the upper and lower space of jack and to add the elastic deformation of pading plate;
D. by the inner carrier of all jack of fuel-flow control hydraulic power unit control, continued separately to eject, carry out secondary synchronization of jacking up, and put in place;
E. put in place after construction operation, by carrying out successively reverse I and II by all jack of fuel-flow control hydraulic power unit control, synchronously land, in order to realize the beam that synchronously falls.
The hydraulic pump motor of described fuel-flow control hydraulic power unit often turns around, the hydraulic oil of hydraulic pump output fixed amount, and fuel-flow control hydraulic power unit has PLC, in order to record the revolution of oil pressure pump motor, and calculate the hydraulic fluid flow rate volume of turnover jack, with this, control the stroke of synchronization of jacking up and the landing of many jack.
In technique scheme, bridge jacking system of the present invention and its raising method be by bridge bottom, many twin-stage single-acting jack being set, and drive jack to carry out synchronous micro-jacking and landing by fuel-flow control hydraulic power unit.Owing to adopting twin-stage single-acting jack, can first carry out the pre-jacking of one-level, to eliminate space and elastic deformation, and then carry out the formal jacking of secondary, can avoid piston to depart from the defects such as cylinder body, and by the volume that accurate measurement hydraulic oil passes in and out each jack, realize the Synchronization Control of jacking and landing, play jacking Multipoint synchronous controlled, prevent that jack piston from departing from the controlled effect that declines of the controlled and very heavy heading tape lotus of cylinder body, thereby effectively guarantee the structural safety in bridge jacking process.
Accompanying drawing explanation
Fig. 1 is the top view of twin-stage single-acting jack of the present invention;
Fig. 2 is the one-level jacking view of twin-stage single-acting jack of the present invention;
Fig. 3 is the secondary jacking view of twin-stage single-acting jack of the present invention;
Fig. 4 is the jack scheme of installation of bridge jacking method of the present invention;
Fig. 5 is the jack one-level jacking view of bridge jacking method of the present invention;
Fig. 6 is the jack secondary jacking view of bridge jacking method of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, further illustrate technical scheme of the present invention.
Refer to shown in Fig. 1～Fig. 6, bridge jacking system of the present invention comprises twin-stage single-acting jack 10 and fuel-flow control hydraulic power unit 20, many identical twin-stage single-acting jack 10 are located at respectively between the beam body 1 and its underpart structure 2 for the treatment of jacking bridge, every twin-stage single-acting jack 10 includes cylinder body 11, be located at the oil-in 12 of cylinder body 11 1 sides and be located at the inside and outside two-stage piston 13 in cylinder body 11, 14, in order to be applicable to upper structure type, it is freely-supported plate-girder, in the bridge jacking of T-shaped beam or little case beam and bearing replacement engineering, the height of this jack cylinder body 11 can be designed to be less than 4mm, owing to adopting two- stage piston 13, 14, the large 10mm of the existing slim single-acting jack of its stroke ratio left and right.Fuel-flow control hydraulic power unit 20 is connected with the oil-in 12 of twin-stage single-acting jack 10 respectively by fuel feed pump, fuel-flow control hydraulic power unit 20 also has not demonstration in PLC(figure), and by PLC, record the motor revolution of hydraulic pump, according to revolution, export the hydraulic oil of respective volume amount, with what control every twin-stage single-acting jack 10, carry out synchronization of jacking up and landing.
As an embodiment, described every four twin-stage single-acting jack 10 are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit 20.And between many described fuel-flow control hydraulic power units 20 by linkage controller 21 Synchronization Control that links is set.Shown in Fig. 4 totally two groups of jack and two fuel-flow control hydraulic power units 20.
The method that adopts bridge jacking system of the present invention to carry out bridge jacking specifically comprises the following steps:
A. treating, between beam body 1 downside of jacking bridge and its underpart structure 2, many twin-stage single-acting jack 10 are installed, and in jack upper and lower end several steel plate (not shown) of cushioning padding respectively;
B. the oil-in of jack 12 is connected to respectively to corresponding fuel-flow control hydraulic power unit 20 by fuel feed pump, between many fuel-flow control hydraulic power units 20 by linkage controller 21 Synchronization Control that links is set;
C. the inner carrier of controlling all jack by fuel-flow control hydraulic power unit 20 ejects with outer piston simultaneously, carries out one-level and synchronously tries jacking, in order to eliminate the upper and lower space of jack and to add the elastic deformation of pading plate;
D. the inner carrier of controlling all jack by fuel-flow control hydraulic power unit 20 continues separately to eject, and carries out secondary synchronization of jacking up, and puts in place;
E. put in place after construction operation, by controlled all jack by fuel-flow control hydraulic power unit 20, carry out successively reverse I and II and synchronously land, in order to realize the beam that synchronously falls.
In step C, D, E, the hydraulic pump motor of described fuel-flow control hydraulic power unit 20 often turns around, the hydraulic oil of hydraulic pump output fixed amount, and fuel-flow control hydraulic power unit 20 has PLC, in order to record the revolution of oil pressure pump motor, and calculate the hydraulic fluid flow rate volume of turnover jack, with this, accurately control the stroke of jacking and the landing of many jack, to realize synchronization of jacking up or the landing of many jack.
In sum, because the present invention has adopted twin-stage single-acting jack 10, can first carry out the pre-jacking of one-level, to eliminate space and elastic deformation, and then carry out the formal jacking of secondary, can avoid piston in prior art easily to depart from the defects such as cylinder body 11, and by the volume of every jack of accurate measurement hydraulic oil turnover, realize the Synchronization Control of jacking and landing, play the controlled effect that declines of controlled, the very heavy heading tape lotus of jacking Multipoint synchronous, thereby effectively guarantee the structural safety in bridge jacking process.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, variation, modification to the above embodiment all will drop within the scope of claims of the present invention.
Claims (6)
1. a bridge jacking system, is characterized in that:
Comprise twin-stage single-acting jack and fuel-flow control hydraulic power unit, many identical twin-stage single-acting jack are located at respectively between the beam body and its underpart structure for the treatment of jacking bridge, and every twin-stage single-acting jack includes cylinder body, is located at the oil-in of cylinder body one side and is located at the inside and outside two-stage piston in cylinder body; Fuel-flow control hydraulic power unit is connected with the oil-in of twin-stage single-acting jack respectively by fuel feed pump, fuel-flow control hydraulic power unit also has PLC, and by PLC, record the motor revolution of hydraulic pump, according to revolution, export the hydraulic oil of respective volume amount, with what control every twin-stage single-acting jack, carry out synchronization of jacking up and landing.
2. bridge jacking system as claimed in claim 1 and its raising method, is characterized in that:
Described every four twin-stage single-acting jack are one group, and by the connected fuel feeding of a fuel-flow control hydraulic power unit.
3. bridge jacking system as claimed in claim 2 and its raising method, is characterized in that:
Between many described fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set.
4. bridge jacking system as claimed in claim 1 and its raising method, is characterized in that:
The height of cylinder of described twin-stage single-acting jack is less than 4mm.
5. a bridge jacking method, is characterized in that, comprises the following steps:
A. treating, between the beam body downside of jacking bridge and its underpart structure, many twin-stage single-acting jack are installed, and at jack upper and lower end several steel plates of cushioning padding respectively;
B. the oil-in of jack is connected to respectively to corresponding fuel-flow control hydraulic power unit by fuel feed pump, between many fuel-flow control hydraulic power units by the linkage controller Synchronization Control that links is set;
C. by the inner carrier of all jack of fuel-flow control hydraulic power unit control, with outer piston, ejected simultaneously, carry out one-level and synchronously try jacking, in order to eliminate the upper and lower space of jack and to add the elastic deformation of pading plate;
D. by the inner carrier of all jack of fuel-flow control hydraulic power unit control, continued separately to eject, carry out secondary synchronization of jacking up, and put in place;
E. put in place after construction operation, by carrying out successively reverse I and II by all jack of fuel-flow control hydraulic power unit control, synchronously land, in order to realize the beam that synchronously falls.
6. bridge jacking system as claimed in claim 5 and its raising method, is characterized in that:
The hydraulic pump motor of described fuel-flow control hydraulic power unit often turns around, the hydraulic oil of hydraulic pump output fixed amount, and fuel-flow control hydraulic power unit has PLC, in order to record the revolution of oil pressure pump motor, and calculate the hydraulic fluid flow rate volume of turnover jack, with this, control the stroke of synchronization of jacking up and the landing of many jack.
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| CN201410043693.2A CN103758049B (en) | 2014-01-29 | 2014-01-29 | A kind of bridge jacking method |
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| CN201410043693.2A CN103758049B (en) | 2014-01-29 | 2014-01-29 | A kind of bridge jacking method |
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| CN103758049B CN103758049B (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108455499A (en) * | 2017-12-29 | 2018-08-28 | 丹东意邦计量仪器仪表有限公司 | A kind of hydraulic climbing mechanism for liquid weighing container |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985261Y (en) * | 2006-09-19 | 2007-12-05 | 俞小平 | Double-section jack |
| CN201148321Y (en) * | 2007-07-18 | 2008-11-12 | 李海军 | Maneuvering hydraulic jack |
| CN201962023U (en) * | 2011-01-20 | 2011-09-07 | 上海天演建筑物移位工程有限公司 | Jack for jacking ultrathin bridge |
| CN102518044A (en) * | 2011-12-23 | 2012-06-27 | 中交第三航务工程局有限公司 | Programmable logic controller (PLC) hydraulic proportional synchronous jacking system for jacking bridge |
| KR20120137749A (en) * | 2011-06-13 | 2012-12-24 | 에프알앤디건설(주) | Lifting device for girder |
| CN203977302U (en) * | 2014-01-29 | 2014-12-03 | 上海天演建筑物移位工程有限公司 | A kind of bridge jacking system |
-
2014
- 2014-01-29 CN CN201410043693.2A patent/CN103758049B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985261Y (en) * | 2006-09-19 | 2007-12-05 | 俞小平 | Double-section jack |
| CN201148321Y (en) * | 2007-07-18 | 2008-11-12 | 李海军 | Maneuvering hydraulic jack |
| CN201962023U (en) * | 2011-01-20 | 2011-09-07 | 上海天演建筑物移位工程有限公司 | Jack for jacking ultrathin bridge |
| KR20120137749A (en) * | 2011-06-13 | 2012-12-24 | 에프알앤디건설(주) | Lifting device for girder |
| CN102518044A (en) * | 2011-12-23 | 2012-06-27 | 中交第三航务工程局有限公司 | Programmable logic controller (PLC) hydraulic proportional synchronous jacking system for jacking bridge |
| CN203977302U (en) * | 2014-01-29 | 2014-12-03 | 上海天演建筑物移位工程有限公司 | A kind of bridge jacking system |
Non-Patent Citations (1)
| Title |
|---|
| 景大兴: "顶升技术在桥梁加固改造中的应用", 《公路交通科技 应用技术版》, no. 11, 30 November 2008 (2008-11-30), pages 109 - 111 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108455499A (en) * | 2017-12-29 | 2018-08-28 | 丹东意邦计量仪器仪表有限公司 | A kind of hydraulic climbing mechanism for liquid weighing container |
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Inventor after: Lan Wuji Inventor after: Peng Yongping Inventor after: Lin Qichuo Inventor before: Lan Wuji Inventor before: Peng Yongping Inventor before: Lin Qichuo |
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