CN106351134A - Synchronous jacking system and method for underneath passing existing line box culvert - Google Patents
Synchronous jacking system and method for underneath passing existing line box culvert Download PDFInfo
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- CN106351134A CN106351134A CN201610952581.8A CN201610952581A CN106351134A CN 106351134 A CN106351134 A CN 106351134A CN 201610952581 A CN201610952581 A CN 201610952581A CN 106351134 A CN106351134 A CN 106351134A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims abstract description 128
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000012937 correction Methods 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 3
- 241001654412 Corchorus hirsutus Species 0.000 claims 2
- 235000007261 jackswitch Nutrition 0.000 claims 2
- 238000010276 construction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000013461 design Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a synchronous jacking system for underneath passing an existing line box culvert. A plurality of jack groups, which are arrayed to form one row along a jacking direction, are arranged, so that the frequency of increasing cushion blocks between a rear wall and the jack groups is reduced and the jacking errors are reduced; the requirements on piston rod routes of the jacks are reduced and an applicable range of equipment is enlarged. According to a synchronous jacking method provided by the invention, reversing time of a reversing valve connected with each jack is controlled through a controller to be gradually increased along a direction from small displacement to large displacement of the box culvert, so that the jacking force of each jack is gradually increased along a direction from the large displacement to the small displacement of the box culvert in a synchronous jacking adjusting process; each jack has a stopping action, so that each jack can be independently and accurately controlled and the synchronous adjusting process can also be divided into a plurality of small routes according to requirements; the adjusting process is more accurate and controllable and aims of reasonably adjusting and correcting in real time are realized.
Description
Technical field
The present invention relates to genuine jacking construction equipment, particularly, it is related under one kind wear existing line box culvert synchronization jacking system
System and jacking method.
Background technology
Under wear more than the box culvert of existing line using the construction of jacking method, jacking construction flow process is: 1. excavates working pit, pours
After the prefabricated box culvert body → 3. build on slide plate of slide plate → 2. parados, existing route reinforce → 4. jacking equipment, jacking are installed
After box culvert → 5. complete a jacking stroke, place the circulation of fore-set → 6. at neutral and carry out, until jacking is in place.Jacking method
Construction can reduce the disturbance to existing line, does not interrupt existing line operation, has the advantages that method is easy, safe and reliable.
" cities and towns Subway Bridge jacking construction and control of acceptance cjj74-99 " specifies, the jacking of box culvert allows that medium line error is:
It is ± 200mm during the jacking of one end, be ± 100mm during the jacking of two ends.Therefore, for preventing excessive medium line error, need to strengthen seeing
Survey, conscientiously prevent, rectify a deviation in time.
But during practice of construction, by the factor such as soil layer property, jacking technique under box culvert angle of bevel, existing line
Influence each other, often occur off-design center line horizontal off normal the problems such as, if untreated, following harmful effect can be caused:
(1) the horizontal off normal of box culvert excessive lead to side cut soil amount backbreak, side owes to dig.Even if righting of rectifying a deviation can be passed through,
Side of backbreaking can form large area cavity and causes existing line additionally to settle, and cause route top surface to ftracture when serious.
(2), after laterally off normal is excessive, correction can lead to box culvert front end to cut indigenous equipment (shield machine, the basil) side local pressure
Excessive, produce improper deformation and cause box culvert main body concrete destruction.
(3) once off normal transfinites, correction difficulty is big, forces correction to cause box culvert pontic and front end to cut indigenous equipment and produce non-ballistic
Property deformation and crackle, harm huge, if not taking any measure, box culvert is with the increase of jacking length, off-design axis
Line increasingly severe it is impossible to intercommunication circuit connect suitable.
(4) existing jacking device is made up of hydraulic system and top force system system two large divisions, and this jacking device passes through oil gauge
Reading is scaled top force data, reads jack displacement data by artificial survey, and error is larger.Laterally off normal relies on manual monitoring to survey
Amount, once box culvert merogenesis quantity is many, panel length big, the responsibility to survey crew and professional standards are individual huge tests, and
Efficiency of manual measurement is low, the frequency is low it is impossible to control the medium line error situation of box culvert in time.
(5), after oblique angle box culvert cuts native jacking, form couple because length difference in soil is cut in the left and right sides, force box culvert
Along the horizontal off normal in acute angle side, and have to left and right sides Ding Gao position is adjusted with soil depth increase, but
Existing jacking device cannot the data such as Real-time Collection each jack top power, displacement, under the conditions of prior art, top pick substantially with box culvert
Centrage is arranged symmetrically or unsymmetrical arrangement, and top pick position adjustment is compared blindly, and adjustment does not often reach reasonable request.
Chinese patent 200510111406.8 discloses a kind of computer synchronous propelling method and device, and it adopts computer
Hydraulic system control jack group is controlled to complete the synchronous jacking of box culvert, the program is only referred to by box culvert left and right sides peace
Dress displacement transducer is used for obtaining the displacement of the box culvert left and right sides, and displacement is big, reduces the oil cylinder speed of the big side of displacement, position
Move little, then increase the oil cylinder speed of the little side of displacement, not open specifically detailed oil cylinder adjusted in concert in the program
Mode and process.
In sum, under wear in existing line box culvert, control horizontal off normal extremely important, though under the conditions of prior art
Enable displacement synchronous, but during displacement adjusted in concert can not " Reasonable adjustment " and " real-time deviation correcting ", box culvert is also easy to produce relatively
Horizontal off normal greatly, accordingly, it would be desirable to a kind of scheme is solving this problem.
Content of the invention
Present invention aim at provide wearing existing line box culvert synchronization jacking system and jacking method under one kind, to solve to carry on the back
The problem proposing in scape technology.
Existing line box culvert synchronization jacking system is worn, including arranging along box culvert advancing direction for pushing tow box culvert under one kind
Jack group, the quantity of described jack group is one or more groups of, and described in every group, jack group includes setting respectively
Be placed in the left jack of box culvert the right and left and right jack, jack group described in every group also include being arranged on left jack with
1 between right jack or the middle jack of multiple stage, left jack, right jack and each middle jack are along box culvert laterally side
To be arranged in a row and adjacent two jack between box culvert horizontal direction is provided with spacing；Left jack and difference on right jack
It is provided with for the left dislocation sensor detecting displacement that box culvert the right and left is occurred in jack-in process and right displacement sensing
Device；
Left jack included by Mei Zu jack group, right jack and each middle jack by same oil pump or
Between same group of oil pump feed, and the pushing tow oil pocket of described left jack, right jack and each middle jack and retraction oil pocket
It is respectively connected with for making jack in pushing tow stroke, retract stroke and the reversal valve stopping switching between stroke three, wherein push up
Carry out journey, retract stroke and stop the stroke pushing tow position of corresponding reversal valve, retraction position and middle stop bit respectively；
Left jack, right jack and each middle jack are provided with the pressure for detecting this jack pushing tow pressure
Sensor；
Described jack group is additionally provided with controller, described left dislocation sensor, right displacement transducer, reversal valve and pressure
Force transducer is electrically connected by controller and controls；Described left dislocation sensor and right displacement transducer are used for anti-to controller respectively
Displacement on the right of the displacement on the feedback box culvert left side and box culvert, switching between pushing tow position, retraction position and middle stop bit for the described reversal valve
By controller control；
Described pressure transducer is used for the pushing tow force value of Real-time Collection jack and feeds back to controller so that controller can
Pushing tow force value based on jack sends the instruction of switching position so that the jacking force of each jack is permissible to each reversal valve in real time
Controlled by controlling the commutating period of reversal valve, and then the displacement difference in the jacking direction left and right sides for the real time correction box culvert is (i.e.
The horizontal off normal of box culvert)；
Described controller is used for, when the displacement difference of left dislocation sensor and right displacement transducer feedback is not equal to 0, first leading to
Cross each reversal valve and whole jack switched to termination stroke, then by except displacement big left jack or right jack it
Other outer each jack gain to pushing tow stroke, then by successively pushing tow will be in successively to the little direction of displacement greatly along displacement
Each jack in stroke switches to termination stroke, that is, make displacement big left jack or right jack suspend top
Push away, other each jack continue pushing tows and along displacement greatly to the little direction of displacement successively switch to termination stroke successively and successively first
Suspend pushing tow afterwards；Described controller controls other each jack to experience one or more cyclic processes successively suspending pushing tow successively
Afterwards, the displacement of the box culvert left side and right bit phase shift etc. is finally made to reach the purpose making box culvert the right and left synchronous.
Further, being respectively connected between each jack is connected reversal valve and its pushing tow oil pocket prevents pushing tow oil pocket from returning
The too fast hydraulic control one-way valve of oil, the retraction oil pocket of the control port of each hydraulic control one-way valve jack corresponding with each hydraulic control one-way valve
Connection.
Further, it is connected with for increasing pushing tow oil pocket between each jack is connected reversal valve and its pushing tow oil pocket
Oil-feed flow and the flow control valve reducing pushing tow oil pocket return flow, flow control valve is by its corresponding controller electrical connection control
System.
Further, described synchronous jacking system is provided with multigroup jack group, and each group jack group is along pushing tow direction
Form a line, between two adjacent groups jack group, be folded with cushion block.
Further, the controller set by each group jack group be separately provided for each group jack group it
Between carry out the wireless communication module of information transmission.
Further, described controller is connected with the touch screen for showing each jack information parameter, the information of display
Parameter includes the pressure value of each pressure transducer feedback and the shift value of displacement transducer feedback.
Further, described pressure transducer is the oil pressure sensor and/or setting connecting with each jack pushing tow oil pocket
Force transducer in each jack base one end end or pushing end end.
According to wearing existing line box culvert synchronization jacking system under described, present invention also offers wearing existing line case under one kind
Contain synchronous jacking method, comprise the following steps:
1) controller receives the displacement of the box culvert left side and the box culvert right bit that left dislocation sensor is fed back with right displacement transducer
Move；
2) when on the right of the displacement of the box culvert left side and box culvert, the difference between displacement is not equal to 0, controller passes through each reversal valve
Whole jack are switched to termination stroke；
3) controller pass through reversal valve by addition to the left jack or right jack on the big one side of displacement other each thousand
Jin is taken one's place and is back to pushing tow stroke；
4) value fed back in step 1 when the displacement that left dislocation sensor or the right displacement transducer on the little one side of displacement feed back
On the basis of when increased, controller by pressure transducer gather displacement little left jack or right jack
Pushing tow force value is simultaneously stored as thrust trial value fi, controller also gather displacement big right jack or left jack top
Thrust magnitude is simultaneously stored as thrust reference value gi；
5) controller is that each middle jack distributes target pushing tow force value according to thrust trial value fi, each middle jack
Target pushing tow force value tn is respectively less than fi, and along little direction (the target pushing tow force value of n intermediate jack big to displacement of displacement
It is designated as tn), target pushing tow force value tn of each middle jack is successively decreased based on fi successively, amplitude δ of successively decreasing t=(fi-gi)/
(n+1), wherein n is total number of units of middle jack；
6) along displacement greatly to the direction that displacement is little, the real-time jacking force of each middle jack being fed back by pressure transducer
After value successively reaches target pushing tow force value tn successively, during each middle jack is successively switched to by controller successively by reversal valve
Little for displacement left jack or right jack are finally switched to termination stroke by only stroke；
7) process of repeat step 2～step 6, on the right of the displacement of the box culvert left side and box culvert, the difference between displacement is equal to 0
When, complete adjusted in concert process, whole jack are switched to pushing tow stroke pushing tow is synchronized with identical jacking force.
Heretofore described box culvert horizontal direction refers to the direction vertical with box culvert advancing direction；Heretofore described is very heavy
Top includes left jack, right jack and each middle jack；Heretofore described displacement transducer includes left dislocation sensing
Device and right displacement transducer, several oil pumps that heretofore described one group of oil pump is pointed out hydraulic fluid port and connected.
The method have the advantages that
The pushing tow system of the present invention is provided with the multigroup jack group forming a line along pushing tow direction, on the one hand can subtract
The few frequency increasing cushion block between rear parados and jack group, it is to avoid make jack piston rod return because of cushion block to be increased
Contract and cause pushing tow error；On the other hand the requirement of the piston rod stroke to jack can be reduced, when needing Long travel, can lead to
Cross the jack group priority pushing tow that end to end multigroup short stroke is set to meet requirement, expand the scope of application of equipment,
Beneficial to cost control.
The pushing method that the pushing tow system of the present invention is adopted controls, by controller, the reversal valve that each jack connected
Commutating period along the little direction big to displacement of box culvert displacement increase successively thus reach synchronous push adjust during, edge
Box culvert displacement to be incremented by the jacking force of each jack in the little direction of displacement greatly, finally make box culvert the right and left displacement identical and real
Now synchronous, control process is simple, and the thrust profiles of each jack are reasonable.
The pushing method of the present invention during adjusted in concert, the big not jacking of box culvert displacement, remaining position is along position
Move greatly to the little direction of displacement be in incrementally jacking, the adjustment of the on one side continuous way of deceleration with respect to speedup in prior art
Mode, each jack of this patent has abort actions so that each of this patent jack can be independently accurate
Control, also make adjusted in concert process can be subdivided into multiple little strokes as needed, adjust process more controllable precise, reach conjunction
Reason adjustment and the purpose of real-time deviation correcting；
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the overall top view of the synchronous jacking system of the preferred embodiment of the present invention；
Fig. 2 is the hydraulic schematic diagram of the synchronous jacking system of the preferred embodiment of the present invention；
Fig. 3 is the control principle block diagram of the synchronous jacking system of the preferred embodiment of the present invention.
In figure: 1- jack group, the left jack of 11-, the right jack of 12-, a- pushing tow oil pocket, b- retraction oil pocket, 13- is left
Displacement transducer, the right displacement transducer of 14-, jack in the middle of 15-, 16- reversal valve one, 17- oil pressure sensor, 18- controller,
19- hydraulic control one-way valve, 10- reversal valve two, 2- oil pump, 3- cushion block.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can limit according to claim
Multitude of different ways that is fixed and covering is implemented.
Referring to wearing existing line box culvert synchronization jacking system under one kind of Fig. 1～Fig. 3, including along the setting of box culvert advancing direction
The jack group 1 for pushing tow box culvert, jack group 1 includes the left jack 11 being respectively arranged at box culvert the right and left
With right jack 12, jack 15 in the middle of jack group 1 also include being arranged between left jack and right jack ten,
Left jack, right jack and each middle jack along box culvert horizontal direction be arranged in a row and adjacent two jack between along box culvert
Horizontal direction is provided with spacing；It is separately provided for detecting box culvert the right and left in jacking on left jack and right jack
Left dislocation sensor 13 and the right displacement transducer 14 of the displacement being occurred in journey；
Left jack, right jack and each middle jack by oil pump 2 fuel feeding, and left jack, right jack with each
The pushing tow oil pocket a of middle jack and retraction oil pocket b between be respectively connected with for make jack pushing tow stroke, retract stroke with
Stop the reversal valve 1 of switching between stroke three, wherein pushing tow stroke, retract stroke and termination stroke corresponding commutation respectively
The pushing tow position of valve one, retraction position and middle stop bit, in the present embodiment, reversal valve one is three position four-way directional control valve, the top of reversal valve one
Pushing, retraction position are respectively right position, left position and middle position with middle stop bit；
Left jack, right jack and each middle jack are provided with the pressure for detecting this jack pushing tow pressure
Sensor, in the present embodiment, pressure transducer is the oil pressure sensor 17 connecting with each jack pushing tow oil pocket.
The jack group of the present embodiment is additionally provided with controller 18, left dislocation sensor 13, right displacement transducer 14, changes
Electrically connected by controller to valve 1, oil pressure sensor 17 and Oil pump electrical machinery and control；Described left dislocation sensor and right displacement
Sensor is used for feeding back the displacement on the right of displacement and the box culvert on the box culvert left side to controller respectively, described reversal valve pushing tow position,
Switching between retraction position and middle stop bit is by controller control；
Oil pressure sensor 17 is used for the pushing tow force value of Real-time Collection jack and feeds back to controller 18 so that controller can
Pushing tow force value based on jack sends the instruction of switching position so that the jacking force of each jack to each reversal valve 1 in real time
Can be controlled by controlling the commutating period of reversal valve one, and then the horizontal off normal of real time correction box culvert；
(it is set to left side displacement when box culvert the right and left displacement occurs deviation in this facility example big, the right displacement is little), left
Displacement transducer is not equal to 0 with the displacement difference of right displacement transducer feedback, and controller first passes through each reversal valve 1 by whole thousand
Jin top switches to termination stroke, then jack in the middle of ten and right jack are gained to pushing tow stroke, then by from left to right
Direction successively each jack being in pushing tow stroke is switched to termination stroke successively, that is, make left jack first suspend top
Push away, other each jack continue pushing tow and successively switch to termination stroke successively along direction from left to right and make ten centres thousand
Jin top and right jack successively suspend pushing tow successively；Controller controls ten middle jack one or more with right very heavy experience
After successively suspending the cyclic process of pushing tow successively, the displacement of the box culvert left side and right bit phase shift etc. is finally made to reach and make about box culvert
The synchronous purpose in both sides.
Referring to Fig. 2, it is respectively connected between the reversal valve 1 that each jack is connected and its pushing tow oil pocket a and prevents pushing tow oil
The too fast hydraulic control one-way valve of chamber oil return 19, the control port of each hydraulic control one-way valve jack corresponding with each hydraulic control one-way valve return
Contracting oil pocket b connects.
Referring to Fig. 2, it is connected with for increasing pushing tow between the reversal valve 1 that each jack is connected and its pushing tow oil pocket b
Oil pocket oil-feed flow and the flow control valve reducing pushing tow oil pocket return flow, in the present embodiment, flow control valve adopts two
The reversal valve 2 10 of two-way, reversal valve two also electrically connects control by controller 18.
Referring to Fig. 1, synchronous jacking system is provided with four groups of jack groups, and Mei Zu jack group is provided with and is laterally arranged in a row
12 jack, four groups of jack groups form a line along pushing tow direction, are folded between two adjacent groups jack group
Cushion block 3.Multigroup jack group one side is set and can reduce the frequency increasing cushion block between rear parados and jack group,
Avoid and so that jack piston rod is bounced back and cause pushing tow error；On the other hand can reduce to jack
The requirement of piston rod stroke, when needing longer stroke, can be by arranging the jack group of end to end multigroup short stroke
Priority pushing tow, to meet requirement, expands the scope of application of equipment, beneficial to cost control.
Referring to Fig. 3, the controller set by four groups of jack groups be connected to for each group jack group it
Between carry out the wireless communication module of information transmission, each controller gathers other each group jack groups by wireless communication module
Pushing tow pressure and pushing tow displacement data and realize information sharing.
Referring to Fig. 3, each controller is connected to the same touch screen for showing each jack information parameter, the letter of display
Breath parameter includes the pressure value of each pressure transducer feedback and the shift value of displacement transducer feedback.
Wear existing line box culvert synchronization jacking method under one kind, comprise the following steps:
1) controller receives the displacement of the box culvert left side and the box culvert right bit that left dislocation sensor is fed back with right displacement transducer
Move；
2) when the difference of the displacement of the box culvert left side and the right displacement is not equal to 0, it is assumed that the displacement of the box culvert left side in the present embodiment
Bigger than displacement on the right of box culvert, whole jack are switched to termination stroke by each reversal valve by controller；
3) each for other in addition to the left jack on the big one side of displacement jack (is included ten by reversal valve by controller
Individual middle jack and right jack) gain to pushing tow stroke；
4) when the little one side of displacement right displacement transducer feedback displacement on the right of the box culvert that step 1 is fed back shift value
On the basis of when increased, controller by pressure transducer gather displacement little the pushing tow force value of right jack and deposit
Store up as thrust trial value fi, controller also gather displacement big the pushing tow force value of left jack and be stored as thrust benchmark
Value gi；
5) controller is that each middle jack distributes target pushing tow force value according to thrust trial value fi, each middle jack
Target pushing tow force value tn is respectively less than fi, and along little direction (the target pushing tow force value of n intermediate jack big to displacement of displacement
It is designated as tn), target pushing tow force value tn of each middle jack is successively decreased based on fi successively, amplitude δ of successively decreasing t=(fi-gi)/
(n+1), that is, along the little direction big to displacement of displacement, in the middle of first, the target pushing tow force value of jack is t1=fi- δ t, the
In the middle of two, the target pushing tow force value of jack is t2=t1- δ t=fi-2 δ t, the target jacking force of n intermediate jack
It is worth for tn=fi-n* δ t, wherein n are total number of units of middle jack；
6) along displacement greatly to the direction that displacement is little, the real-time jacking force of each middle jack being fed back by pressure transducer
After value successively reaches target pushing tow force value tn successively, during each middle jack is successively switched to by controller successively by reversal valve
Little for displacement left jack or right jack are finally switched to termination stroke by only stroke；
7) process of repeat step 2～step 6, on the right of the displacement of the box culvert left side and box culvert, the difference between displacement is equal to 0
When, complete adjusted in concert process, whole jack are switched to pushing tow stroke pushing tow is synchronized with identical jacking force.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. wear existing line box culvert synchronization jacking system under a kind of it is characterised in that including the use along the setting of box culvert advancing direction
In the jack group of pushing tow box culvert, the quantity of described jack group is one or more groups of, and jack group described in every group
Including the left jack being respectively arranged at box culvert the right and left and right jack, jack group described in every group also includes being arranged on
1 between left jack and right jack or the middle jack of multiple stage, left jack, right jack and each middle jack edge
Box culvert horizontal direction be arranged in a row and adjacent two jack between box culvert horizontal direction is provided with spacing；Left jack and right thousand
Be separately provided on jin top detecting the left dislocation sensor of displacement that occurred in jack-in process of box culvert the right and left with
Right displacement transducer；
Left jack included by Mei Zu jack group, right jack and each middle jack are by same oil pump or same
All connect between group oil pump feed, and the pushing tow oil pocket of described left jack, right jack and each middle jack and retraction oil pocket
It is connected to for making jack in pushing tow stroke, retract stroke and the reversal valve stopping switching between stroke three, wherein pushing tow row
Journey, retract stroke and the termination stroke pushing tow position of corresponding reversal valve, retraction position and middle stop bit respectively；
Left jack, right jack and each middle jack are provided with the pressure sensing for detecting this jack pushing tow pressure
Device；
Described jack group is additionally provided with controller, and described left dislocation sensor, right displacement transducer, reversal valve and pressure pass
Sensor is electrically connected by controller and controls；Described left dislocation sensor is used for respectively to controller feedback box with right displacement transducer
Contain the displacement on the right of displacement and the box culvert on the left side, switching between pushing tow position, retraction position and middle stop bit for the described reversal valve is by controlling
Device processed controls；
Described pressure transducer is used for the pushing tow force value of Real-time Collection jack and feeds back to controller so that controller can be based on
The pushing tow force value of jack sends the instruction of switching position so that the jacking force of each jack can be passed through to each reversal valve in real time
The commutating period controlling reversal valve controls, and then real time correction box culvert is in the displacement difference of the jacking direction left and right sides；
Described controller is used for, when the displacement difference of left dislocation sensor and right displacement transducer feedback is not equal to 0, first passing through each
Whole jack are switched to termination stroke by reversal valve, then by except displacement big left jack or right jack in addition to
Other each jack gain to pushing tow stroke, then by successively pushing tow stroke will be in successively to the little direction of displacement greatly along displacement
In each jack switch to termination stroke, that is, make displacement big left jack or right jack suspend pushing tow, its
His each jack continue pushing tow and along displacement greatly to the little direction of displacement successively switch to termination stroke successively and successively temporarily successively
Stop pushing tow；After described controller controls the one or more successively cyclic process of time-out pushing tow successively of other each jack experience,
The displacement of the box culvert left side and right bit phase shift etc. is finally made to reach the purpose making box culvert the right and left synchronous.
2. wear existing line box culvert synchronization jacking system under one kind according to claim 1 it is characterised in that each jack
It is respectively connected with the hydraulic control one-way valve preventing pushing tow oil pocket oil return too fast, each hydraulic control between the reversal valve being connected and its pushing tow oil pocket
The retraction oil pocket connection of the control port of check valve jack corresponding with each hydraulic control one-way valve.
3. wear existing line box culvert synchronization jacking system under one kind according to claim 1 it is characterised in that each jack
It is connected between the reversal valve being connected and its pushing tow oil pocket and return for increasing pushing tow oil pocket oil-feed flow and reduction pushing tow oil pocket
The flow control valve of oily flow, flow control valve is controlled by its corresponding controller electrical connection.
4. wear existing line box culvert synchronization jacking system under one kind according to claim 1 it is characterised in that described pressure
Sensor is the oil pressure sensor being connected with each jack pushing tow oil pocket and/or is arranged on each jack base one end end or top
Push away the force transducer of end end.
5. under the one kind according to any one in Claims 1 to 4, wear existing line box culvert synchronization jacking system, its feature
It is, described synchronous jacking system is provided with multigroup jack group, and the jack included by each group jack group is along pushing tow side
To forming a line, between two adjacent groups jack group, it is folded with cushion block.
6. wear existing line box culvert synchronization jacking system under one kind according to claim 5 it is characterised in that each group is very heavy
Controller set by the group of top is separately provided for carrying out the radio communication of information transmission between each group jack group
Module.
7. wear existing line box culvert synchronization jacking system under one kind according to claim 5 it is characterised in that described control
Device is connected with for inputting control parameter and showing the touch screen of each jack information parameter.
8. wear under according to any one in claim 1～7 under one kind of existing line box culvert synchronization jacking system setting
Wear existing line box culvert synchronization jacking method it is characterised in that comprising the following steps:
1) controller receives displacement on the right of the box culvert left side displacement of left dislocation sensor and right displacement transducer feedback and box culvert；
2) when on the right of the displacement of the box culvert left side and box culvert, the difference between displacement is not equal to 0, controller passes through each reversal valve will be complete
Portion's jack switches to termination stroke；
3) controller passes through reversal valve by other each jack in addition to the left jack or right jack on the big one side of displacement
Gain to pushing tow stroke；
4) base of the value fed back in step 1 when the displacement that left dislocation sensor or the right displacement transducer on the little one side of displacement feed back
When increased on plinth, controller by pressure transducer gather displacement little left jack or right jack pushing tow
Force value is simultaneously stored as thrust trial value fi, controller also gather displacement big right jack or left jack jacking force
It is worth and is stored as thrust reference value gi；
5) controller is that each middle jack distributes target pushing tow force value, the target of each middle jack according to thrust trial value fi
Pushing tow force value tn is respectively less than fi, and along the little direction big to displacement of displacement, the target pushing tow force value of n intermediate jack is designated as
Tn, target pushing tow force value tn of each middle jack is successively decreased based on fi successively, amplitude δ of successively decreasing t=(fi-gi)/(n+1),
Wherein n is total number of units of middle jack；
6) along displacement greatly to the direction that displacement is little, the real-time pushing tow force value of each middle jack being fed back by pressure transducer according to
After secondary priority reaches target pushing tow force value tn, each middle jack is successively switched to termination row by reversal valve by controller successively
Little for displacement left jack or right jack are finally switched to termination stroke by journey；
7) process of repeat step 2～step 6, when on the right of the displacement of the box culvert left side and box culvert, the difference between displacement is equal to 0, complete
Become adjusted in concert process, whole jack are switched to pushing tow stroke pushing tow is synchronized with identical jacking force.
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| CN201610952581.8A CN106351134B (en) | 2016-11-02 | 2016-11-02 | Existing line box culvert is worn under one kind and synchronizes jacking system and jacking method |
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| CN107505910A (en) * | 2017-10-19 | 2017-12-22 | 中铁六局集团石家庄铁路建设有限公司 | Box culvert synchronization jacking system |
| CN107574765A (en) * | 2017-10-19 | 2018-01-12 | 中铁六局集团石家庄铁路建设有限公司 | Division control type box culvert synchronization jacking system |
| CN107905259A (en) * | 2017-11-29 | 2018-04-13 | 浙江跃龙园林建设有限公司 | Box culvert advancing monitoring device and its construction method |
| CN108375361A (en) * | 2018-03-13 | 2018-08-07 | 中国矿业大学 | A method of the detection effective pass trip of hydraulic support |
| CN110219256A (en) * | 2019-06-17 | 2019-09-10 | 中建六局土木工程有限公司 | A kind of channel complexity Construction of Supporting method for passing through box culvert |
| CN114687303A (en) * | 2022-03-15 | 2022-07-01 | 东南大学 | Active deviation rectifying method and system for large-angle oblique crossing box culvert jacking construction |
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| CN114687303A (en) * | 2022-03-15 | 2022-07-01 | 东南大学 | Active deviation rectifying method and system for large-angle oblique crossing box culvert jacking construction |
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| CN106351134B (en) | 2018-06-15 |
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Denomination of invention: Synchronous jacking system and method for underneath passing existing line box culvert Effective date of registration: 20190701 Granted publication date: 20180615 Pledgee: Bank of Communications Co.,Ltd. Hunan Branch Pledgor: Hunan Lianzhi Bridge and Tunnel Technology Co.,Ltd. Registration number: 2019430000061 |
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Denomination of invention: A synchronous jacking system and jacking method for box culvert passing through existing line Effective date of registration: 20220920 Granted publication date: 20180615 Pledgee: China Everbright Bank Co.,Ltd. Changsha Huafeng Sub branch Pledgor: Hunan Lianzhi Technology Co.,Ltd. Registration number: Y2022430000087 |
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Denomination of invention: A Synchronous Jacking System and Jacking Method for Undercrossing Existing Line Box Culverts Effective date of registration: 20231109 Granted publication date: 20180615 Pledgee: China Everbright Bank Co.,Ltd. Changsha Huafeng Sub branch Pledgor: Hunan Lianzhi Technology Co.,Ltd. Registration number: Y2023980064937 |