CN106351134B - Existing line box culvert is worn under one kind and synchronizes jacking system and jacking method - Google Patents
Existing line box culvert is worn under one kind and synchronizes jacking system and jacking method Download PDFInfo
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- CN106351134B CN106351134B CN201610952581.8A CN201610952581A CN106351134B CN 106351134 B CN106351134 B CN 106351134B CN 201610952581 A CN201610952581 A CN 201610952581A CN 106351134 B CN106351134 B CN 106351134B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000006073 displacement reaction Methods 0.000 claims abstract description 144
- 230000001360 synchronised effect Effects 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000000725 suspension Substances 0.000 claims description 13
- 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
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 241001654412 Corchorus hirsutus Species 0.000 claims 2
- 235000007261 jackswitch Nutrition 0.000 claims 2
- 238000010276 construction Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000010676 Ocimum basilicum Nutrition 0.000 description 1
- 240000007926 Ocimum gratissimum Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 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
- 238000012544 monitoring process Methods 0.000 description 1
- 230000007935 neutral effect 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
Abstract
Existing line box culvert is worn under one kind and synchronizes jacking system, is provided with the multigroup jack group to form a line along pushing tow direction, the frequency for increasing cushion block between rear parados and jack group is reduced, reduces pushing tow error；The requirement to the piston rod stroke of jack is reduced, expands the scope of application of equipment.The synchronous push method of the present invention controls the commutating period of reversal valve that each jack is connected to successively increase to reach during synchronous push adjusting along the big direction of box culvert displacement as low as displacement by controller, it is incremented by along box culvert displacement to the jacking force of each jack in the small direction of displacement greatly, each jack of this patent has abort actions, so that each jack independently can be controlled accurately in this patent, but also the process of synchronous adjustment can be subdivided into multiple small strokes as needed, adjusting process more controllable precise, achieve the purpose that rationally to adjust and real-time deviation correcting.
Description
Technical field
The present invention relates to genuine jacking construction equipment, particularly, are related to wearing existing line box culvert synchronization jacking system under one kind
System and jacking method.
Background technology
Under wear the box culvert of existing line and mostly constructed using jacking method, jacking construction flow is：1. it excavates working pit, pour
3. jacking equipment, jacking are reinforced → 4. installed to parados, existing route to slide plate → the 2. prefabricated box culvert body on slide plate → after building
After box culvert → 5. completes a jacking stroke, the cycle of fore-set → 6. is placed at neutral gear and is carried out, until jacking is in place.Jacking method
Construction can reduce the disturbance to existing line, not interrupt existing line operation, have the advantages that method is easy, safe and reliable.
《Cities and towns Subway Bridge jacking construction and control of acceptance CJJ74-99》Regulation, the jacking of box culvert allow the medium line error to be：
For ± 200mm during the jacking of one end, when both ends jacking is ± 100mm.Therefore, it to prevent excessive medium line error, needs to strengthen seeing
It surveys, conscientiously prevents, rectify a deviation in time.
But during practice of construction, by the factors such as soil layer property, jacking technique under box culvert angle of bevel, existing line
It influences each other, occurs the problems such as lateral deviation of off-design center line often, if untreated, following harmful effect can be caused：
(1) box culvert transverse direction deviation is excessive causes a lateral incision soil amount to be backbreak, and side owes to dig.Even if can by righting of rectifying a deviation,
Side of backbreaking can form large area cavity existing line is caused additionally to settle, and route top surface is caused to crack when serious.
(2) after lateral deviation is excessive, correction can cause box culvert front end to cut indigenous equipment (shield machine, the basil) side local pressure
It is excessive, it generates improper deformation and causes box culvert main body concrete destruction.
(3) once deviation transfinites, correction difficulty is big, forces correction that box culvert pontic and front end is caused to cut indigenous equipment and generate non-ballistic
Property deformation and crackle, harm it is huge, if not taking any measure, box culvert is with the increase of jacking length, off-design axis
Line is increasingly severe, can not be connect with intercommunication circuit suitable.
(4) existing jacking device is made of hydraulic system and top force system system two large divisions, which passes through oil pressure gauge
Reading is scaled top force data, reads jack displacement data by manually surveying, and error is larger.Lateral deviation is surveyed by artificial monitoring
Amount, once box culvert merogenesis quantity is more, panel length is big, the sense of responsibility and professional standards to survey crew are a huge tests, and
Efficiency of manual measurement is low, the frequency is low, can not control the medium line error situation of box culvert in time.
(5) after oblique angle box culvert cuts native jacking, couple is formed due to length difference in left and right sides incision soil, forces box culvert
Along acute angle side transverse direction deviation, and as soil depth increase has to be adjusted left and right sides top pick position, but
Existing jacking device can not acquire the data such as each jack top power, displacement in real time, and under the conditions of the prior art, top pick is substantially with box culvert
Center line is arranged symmetrically or unsymmetrical arrangement, and the adjustment of top pick position is compared blindly, and reasonable request is often not achieved in adjustment.
Chinese patent 200510111406.8 discloses a kind of computer synchronous propelling method and device, uses computer
Hydraulic system control jack group is controlled to complete the synchronization jacking of box culvert, the program is only referred to by pacifying at left and right sides of box culvert
For dress displacement sensor for obtaining the displacement at left and right sides of box culvert, displacement is big, reduces the oil cylinder speed of displacement big side, position
It moves small, then increases the oil cylinder speed of the small side of displacement, there is no open specific detailed oil cylinders in the program to be adjusted in synchronism
Mode and process.
In conclusion being worn under in existing line box culvert, control lateral deviation extremely important, though under the conditions of the prior art
Can realize displacement synchronous, but during displacement synchronous adjustment cannot " rationally adjustment " and " real-time deviation correcting ", box culvert be also easy to produce compared with
Big transverse direction deviation, therefore, it is necessary to a kind of schemes to solve the problems, such as this.
Invention content
Present invention aims at providing to wear existing line box culvert synchronization jacking system and jacking method under one kind, to solve to carry on the back
The problem of being proposed in scape technology.
Existing line box culvert is worn under one kind and synchronizes jacking system, pushing tow box culvert is used for including what is set along box culvert advancing direction
Jack group, the quantity of the jack group is one or more groups of, and jack group described in every 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 further include be arranged on left jack with
1 or more between right jack intermediate jack, left jack, right jack and each intermediate jack are along box culvert transverse direction side
To being arranged in a row and box culvert horizontal direction be provided with spacing between adjacent two jack；Left jack on right jack with distinguishing
It is provided with the left position displacement sensor for detecting the displacement that box culvert the right and left is occurred in jack-in process and right displacement sensing
Device；
Left jack, right jack and each intermediate jack included by every group of jack group by same oil pump or
Same group of oil pump feed, and between the left jack, the pushing tow oil pocket of right jack and each intermediate jack and retraction oil pocket
It is respectively connected with for making jack in pushing tow stroke, retract stroke and stopping the reversal valve switched between stroke three, wherein pushing up
Carry out journey, retract stroke corresponds to the pushing tow position of reversal valve with stopping stroke respectively, bounce back position and middle stop bit；
Left jack, right jack and each intermediate jack are both provided with the pressure for detecting the jack pushing tow pressure
Sensor；
The jack group is additionally provided with controller, the left position displacement sensor, right displacement sensor, reversal valve and pressure
Force snesor is electrically connected by controller and controlled；The left position displacement sensor is with right displacement sensor for anti-to controller respectively
Present the displacement on the right of the displacement and box culvert on the box culvert left side, switching of the reversal valve between pushing tow position, retraction position and middle stop bit
It is controlled by controller；
The pressure sensor is for the pushing tow force value of acquisition jack in real time and feeds back to controller so that controller can
Pushing tow force value based on jack sends the instruction of switching position to each reversal valve in real time so that the jacking force of each jack can be with
It is controlled by controlling the commutating period of reversal valve, and then displacement difference of the real time correction box culvert at left and right sides of jacking direction is (i.e.
The lateral deviation of box culvert)；
The controller is used to, when the displacement difference of left position displacement sensor and right displacement sensor feedback is not equal to 0, first lead to
Cross each reversal valve and whole jack switched into suspension stroke, then by except the left jack on the big one side of displacement or right jack it
Other outer each jack are gained to pushing tow stroke, then by will successively be in pushing tow successively to the small direction of displacement greatly along displacement
Each jack in stroke switches to suspension stroke, that is, the left jack on the one side for causing displacement big or right jack pause top
It pushes away, other each jack continue pushing tows and successively switch to successively greatly to the small direction of displacement along displacement to stop stroke and successively elder generation
After suspend pushing tow；The controller controls other each one or more cyclic processes for successively suspending pushing tow successively of jack experience
Afterwards, finally make the displacement of the box culvert left side and right bit phase shift etc. and achieve the purpose that make 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 to increase pushing tow oil pocket between each jack is connected reversal valve and its pushing tow oil pocket
Oil inlet flow and the flow control valve for reducing pushing tow oil pocket return flow, flow control valve is by its corresponding controller electrical connection control
System.
Further, the synchronous jacking system is equipped with multigroup jack group, and each group jack group is along pushing tow direction
It forms a line, cushion block is folded between two adjacent groups jack group.
Further, the controller set by each group jack group be separately provided for each group jack group it
Between into row information transmit wireless communication module.
Further, the 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 sensor feedback and the shift value of displacement sensor feedback.
Further, the pressure sensor is the oil pressure sensor and/or setting connected with each jack pushing tow oil pocket
Force snesor in each jack base one end end or pushing end end.
Jacking system is synchronized according to existing line box culvert is worn under described, the present invention also provides existing line case is worn under one kind
Contain synchronous jacking method, include the following steps：
1) controller receives left position displacement sensor and the box culvert left side displacement of right displacement sensor feedback and box culvert right bit
It moves；
2) when the difference between the displacement of the box culvert left side and box culvert the right displacement is not equal to 0, controller passes through each reversal valve
Whole jack are switched into suspension stroke；
3) controller by reversal valve by addition to the left jack on the big one side of displacement or right jack other each thousand
Jin, which is taken one's place, is back to pushing tow stroke；
4) when the value that the displacement that the left position displacement sensor on the small one side of displacement or right displacement sensor are fed back is fed back in step 1
On the basis of when increased, controller acquires the left jack on displacement small one side or right jack by pressure sensor
Pushing tow force value is simultaneously stored as thrust trial value Fi, and controller also acquires the right jack on the big one side of displacement or the top of left jack
Thrust magnitude is simultaneously stored as thrust a reference value Gi；
5) controller distributes target pushing tow force value according to thrust trial value Fi for each intermediate jack, each intermediate jack
Target pushing tow force value Tn is respectively less than Fi, and along the big direction of displacement as low as displacement (the target pushing tow force value of n intermediate jack
It is denoted as Tn), the target pushing tow force value Tn of each intermediate jack is successively decreased successively based on Fi, amplitude, ao of successively decreasing T=(Fi-Gi)/
(N+1), wherein N is total number of units of intermediate jack；
6) along displacement greatly to the small direction of displacement, by the real-time jacking force of each intermediate jack of pressure sensor feedback
After value successively reaches target pushing tow force value Tn successively, during controller is successively successively switched to each intermediate jack by reversal valve
The left jack on the small one side of displacement or right jack are finally switched to suspension stroke by only stroke；
7) process of step 2~step 6 is repeated, until the difference on the right of the displacement of the box culvert left side and box culvert between displacement is equal to 0
When, synchronous adjustment process is completed, whole jack is switched into 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 intermediate jack；Heretofore described displacement sensor is sensed including left dislocation
Device and right displacement sensor, heretofore described one group of oil pump point out hydraulic fluid port and several oil pumps even.
The invention has the advantages that：
The pushing tow system of the present invention is provided with the multigroup jack group to form a line along pushing tow direction, on the one hand can subtract
Few frequency for increasing cushion block between rear parados and jack group, avoiding returns jack piston rod due to cushion block to be increased
It contracts and causes pushing tow error；On the other hand the requirement to the piston rod stroke of jack can be reduced, when needing long stroke, can be led to
It crosses and the jack group priority pushing tow of end to end multigroup short stroke is set to meet the requirements, expand the scope of application of equipment,
Conducive to cost control.
Pushing method controls the reversal valve that each jack connected by controller used by the pushing tow system of the present invention
Commutating period successively increased along the big direction of box culvert displacement as low as displacement so as to reach synchronous push adjusting during, edge
It box culvert displacement to the jacking force of each jack in the small direction of displacement to be incremented by greatly, finally makes box culvert the right and left displacement identical and real
It now synchronizes, control process is simple, and the thrust profiles of each jack are reasonable.
The pushing method of the present invention is during synchronous adjustment, the big one side not jacking of box culvert displacement, remaining position is along position
It moves greatly to the small direction of displacement in incrementally jacking, relative to the continuous adjustment slowed down while speedup in the prior art
Mode, each jack of this patent have abort actions so that each jack can be independently accurate in this patent
Control but also the process of synchronous adjustment can be subdivided into multiple small strokes as needed, adjusts process more controllable precise, reaches conjunction
Reason adjustment and the purpose of real-time deviation correcting；
Other than 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 described in further detail.
Description of the drawings
The attached drawing for forming the part of the application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the overall top view of the synchronization jacking system of the preferred embodiment of the present invention；
Fig. 2 is the hydraulic schematic diagram of the synchronization jacking system of the preferred embodiment of the present invention；
Fig. 3 is the control principle block diagram of the synchronization 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 pockets, B- retraction oil pockets, 13- are left
Displacement sensor, the right displacement sensors of 14-, 15- centres jack, 16- reversal valves one, 17- oil pressure sensors, 18- controllers,
19- hydraulic control one-way valves, 10- reversal valves two, 2- oil pumps, 3- cushion blocks.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Jacking system is synchronized referring to existing line box culvert is worn under one kind of Fig. 1~Fig. 3, including being set along box culvert advancing direction
The jack group 1 for pushing tow box culvert, jack group 1 includes being respectively arranged at the left jack 11 of box culvert the right and left
With right jack 12, jack group 1 further includes the intermediate jack 15 of ten be arranged between left jack and right jack,
Left jack, right jack and each intermediate jack are arranged in a row along box culvert horizontal direction and between adjacent two jack along box culvert
Horizontal direction is provided with spacing；Detection box culvert the right and left is separately provided on left jack and right jack in jacking
The left position displacement sensor 13 of the displacement occurred in journey and right displacement sensor 14；
Left jack, right jack and each intermediate jack by 2 fuel feeding of oil pump, and left jack, right jack with it is each
Be respectively connected between the pushing tow oil pocket A of intermediate jack and retraction oil pocket B for make jack pushing tow stroke, retract stroke with
Stop the reversal valve 1 switched between stroke three, wherein pushing tow stroke, retract stroke are with stopping 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 and middle stop bit are respectively right position, left position and middle position；
Left jack, right jack and each intermediate jack are both provided with the pressure for detecting the jack pushing tow pressure
Sensor, in the present embodiment, pressure sensor is the oil pressure sensor 17 connected with each jack pushing tow oil pocket.
The jack group of the present embodiment is additionally provided with controller 18, and left position displacement sensor 13, changes right displacement sensor 14
It is electrically connected and controlled by controller to valve 1, oil pressure sensor 17 and Oil pump electrical machinery；The left position displacement sensor and right displacement
Sensor for the displacement respectively on the right of the displacement on the controller feedback box culvert left side and box culvert, the reversal valve pushing tow position,
Switching between retraction position and middle stop bit is controlled by controller；
Oil pressure sensor 17 is for the pushing tow force value of acquisition jack in real time and feeds back to controller 18 so that controller can
Pushing tow force value based on jack sends the instruction of switching position to each reversal valve 1 in real time so that the jacking force of each jack
It can be controlled by controlling the commutating period of reversal valve one, and then the lateral deviation of real time correction box culvert；
It is left when deviation occurs for the displacement of box culvert the right and left (be set as in this facility example left side displacement is big, and the right displacement is small)
The displacement difference of displacement sensor and right displacement sensor feedback is not equal to 0, and controller first passes through each reversal valve 1 by all thousand
Jin top switches to suspension stroke, then ten intermediate jack are gained with right jack to pushing tow stroke, then by from left to right
Direction each jack in pushing tow stroke successively switched into suspension stroke successively, i.e., so that left jack first suspends top
It pushes away, other each jack continue pushing tow and successively switch to successively along direction from left to right to stop stroke and make ten centres thousand
Successively suspend pushing tow successively with right jack in jin top；Controller controls ten intermediate jack and right very heavy experience one or more
Successively finally make the displacement of the box culvert left side and right bit phase shift etc. and reaching makes box culvert or so after the cyclic process of pause pushing tow successively
The purpose that both sides synchronize.
Referring to Fig. 2, being respectively connected between reversal valve 1 and its pushing tow oil pocket A that each jack is connected prevents pushing tow oily
The too fast hydraulic control one-way valve 19 of chamber oil return, the control port of each hydraulic control one-way valve jack corresponding with each hydraulic control one-way valve return
Contracting oil pocket B is connected.
Referring to Fig. 2, it is connected with to increase pushing tow between reversal valve 1 and its pushing tow oil pocket A that each jack is connected
Oil pocket oil inlet flow and the flow control valve for reducing pushing tow oil pocket return flow, in the present embodiment, flow control valve uses two
The reversal valve 2 10 of two-way, reversal valve two are also electrically connected control by controller 18.
Referring to Fig. 1, synchronous jacking system is equipped with four groups of jack groups, and every group of jack group, which is equipped with, to be 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 is set on the one hand can to reduce the frequency for increasing cushion block between rear parados and jack group,
Avoid makes jack piston rod bounce back and cause pushing tow error due to cushion block to be increased；On the other hand it can reduce to jack
The requirement of piston rod stroke, can be by setting the jack group of end to end multigroup short stroke when needing longer stroke
Priority pushing tow is met the requirements, and expands the scope of application of equipment, conducive to cost control.
Referring to Fig. 3, the controller set by four groups of jack groups be connected separately with for each group jack group it
Between into row information transmit wireless communication module, module acquires other each group jack groups to each controller by radio communication
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 being used to show each jack information parameter, the letter of display
It ceases parameter and includes the pressure value of each pressure sensor feedback and the shift value of displacement sensor feedback.
Existing line box culvert is worn under one kind and synchronizes jacking method, is included the following steps：
1) controller receives left position displacement sensor and the box culvert left side displacement of right displacement sensor feedback and box culvert right bit
It moves；
2) when the difference of the displacement of the box culvert left side and the right displacement is not equal to 0, in the present embodiment, it is assumed that the displacement of the box culvert left side
Bigger than displacement on the right of box culvert, whole jack are switched to suspension stroke by controller by each reversal valve；
3) controller by reversal valve by other each jack in addition to the left jack on the big one side of displacement (including ten
A intermediate jack and right jack) it gains to pushing tow stroke；
4) shift value on the right of the box culvert that the displacement of the right displacement sensor on displacement small one side feedback is fed back in step 1
On the basis of when increased, controller is acquired the pushing tow force value of the right jack on the small one side of displacement by pressure sensor and deposited
It stores up as thrust trial value Fi, controller also acquires the pushing tow force value of the left jack on the big one side of displacement and is stored as thrust benchmark
Value Gi；
5) controller distributes target pushing tow force value according to thrust trial value Fi for each intermediate jack, each intermediate jack
Target pushing tow force value Tn is respectively less than Fi, and along the big direction of displacement as low as displacement (the target pushing tow force value of n intermediate jack
It is denoted as Tn), the target pushing tow force value Tn of each intermediate jack is successively decreased successively based on Fi, amplitude, ao of successively decreasing T=(Fi-Gi)/
(N+1), i.e., along the big direction of displacement as low as displacement, the target pushing tow force value of first intermediate jack is T1=Fi- Δ T, the
The target pushing tow force value of two intermediate 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 intermediate jack；
6) along displacement greatly to the small direction of displacement, by the real-time jacking force of each intermediate jack of pressure sensor feedback
After value successively reaches target pushing tow force value Tn successively, during controller is successively successively switched to each intermediate jack by reversal valve
The left jack on the small one side of displacement or right jack are finally switched to suspension stroke by only stroke；
7) process of step 2~step 6 is repeated, until the difference on the right of the displacement of the box culvert left side and box culvert between displacement is equal to 0
When, synchronous adjustment process is completed, whole jack is switched into pushing tow stroke, pushing tow is synchronized with identical jacking force.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. existing line box culvert is worn under one kind synchronizes jacking system, which is characterized in that including the use set along box culvert advancing direction
In the jack group of pushing tow box culvert, the quantity of the jack group is one or more groups of, and jack group described in every group
Including the left jack for being respectively arranged at box culvert the right and left and right jack, jack group, which further includes, described in every group is arranged on
1 or more intermediate jack between left jack and right jack, left jack, right jack and each intermediate jack edge
Box culvert horizontal direction is arranged in a row and box culvert horizontal direction is provided with spacing between adjacent two jack；Left jack and the right side thousand
Be separately provided on jin top the left position displacement sensor of displacement that detection box culvert the right and left occurred in jack-in process with
Right displacement sensor；
Left jack, right jack and each intermediate jack included by every group of jack group are by same oil pump or same
Group oil pump feed, and connect between the left jack, the pushing tow oil pocket of right jack and each intermediate jack and retraction oil pocket
It is connected to make jack in pushing tow stroke, retract stroke and stop the reversal valve switched between stroke three, wherein pushing tow row
Journey, retract stroke correspond to the pushing tow position, retraction position and middle stop bit of reversal valve with stopping stroke respectively；
Left jack, right jack and each intermediate jack are both provided with the pressure sensing for detecting the jack pushing tow pressure
Device；
The jack group is additionally provided with controller, and the left position displacement sensor, right displacement sensor, reversal valve and pressure pass
Sensor is electrically connected by controller and controlled；The left position displacement sensor is used for right displacement sensor respectively to controller feedback box
Contain the displacement on the right of the displacement and box culvert on the left side, switching of the reversal valve between pushing tow position, retraction position and middle stop bit is by controlling
Device control processed；
The pressure sensor is for the pushing tow force value of acquisition jack in real time 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 to each reversal valve in real time so that the jacking force of each jack passes through control
The commutating period of reversal valve controls, and then displacement difference of the real time correction box culvert at left and right sides of jacking direction；
The controller is used to, when the displacement difference of left position displacement sensor and right displacement sensor feedback is not equal to 0, first pass through each
Whole jack are switched to suspension stroke by reversal valve, then will be in addition to the left jack on the big one side of displacement or right jack
Other each jack are gained to pushing tow stroke, then by will successively be in pushing tow stroke successively to the small direction of displacement greatly along displacement
In each jack switch to suspension stroke, i.e., so that the big left jack on one side of displacement or right jack pause pushing tow,
His each jack continue pushing tow and successively switched to successively greatly to the small direction of displacement along displacement stop stroke and successively temporarily successively
Stop pushing tow；After the controller controls the one or more successively cyclic processes of pause pushing tow successively of other each jack experience,
Finally make the displacement of the box culvert left side and right bit phase shift etc. and achieve the purpose that make box culvert the right and left synchronous.
2. wearing existing line box culvert under one kind according to claim 1 synchronizes jacking system, which is characterized in that each jack
The hydraulic control one-way valve for preventing pushing tow oil pocket oil return too fast, each hydraulic control are respectively connected between the reversal valve 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. wearing existing line box culvert under one kind according to claim 1 synchronizes jacking system, which is characterized in that each jack
It is connected between the reversal valve connected and its pushing tow oil pocket and is returned for increasing pushing tow oil pocket oil inlet flow and reducing pushing tow oil pocket
The flow control valve of oil stream amount, flow control valve is by its corresponding controller electrical connection control.
4. wearing existing line box culvert under one kind according to claim 1 synchronizes jacking system, which is characterized in that the pressure
Sensor is the oil pressure sensor 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 snesor of end end.
5. existing line box culvert is worn under one kind according to any one in Claims 1 to 4 synchronizes jacking system, feature
It is, the synchronous jacking system is equipped with multigroup jack group, and jack included by each group jack group is along pushing tow side
To forming a line, cushion block is folded between two adjacent groups jack group.
6. wearing existing line box culvert under one kind according to claim 5 synchronizes jacking system, which is characterized in that each group is very heavy
Controller set by the group of top is separately provided for the wireless communication transmitted between each group jack group into row information
Module.
7. wearing existing line box culvert under one kind according to claim 5 synchronizes jacking system, which is characterized in that the control
Device is connected with for input control parameter and the touch screen for showing each jack information parameter.
Under 8. one kind that existing line box culvert synchronizes the setting of jacking system is worn under according to any one in claim 1~7
It wears existing line box culvert and synchronizes jacking method, which is characterized in that include the following steps：
1) displacement of the box culvert left side and displacement on the right of box culvert that controller receives left position displacement sensor and right displacement sensor feedback；
2) when the difference between the displacement of the box culvert left side and box culvert the right displacement is not equal to 0, controller will be complete by each reversal valve
Portion's jack switches to suspension stroke；
3) controller by reversal valve by other each jack in addition to the left jack on the big one side of displacement or right jack
It gains to pushing tow stroke；
4) when the base of value that the displacement that the left position displacement sensor on the small one side of displacement or right displacement sensor are fed back is fed back in step 1
When increased on plinth, controller acquires the small left jack on one side of displacement or the pushing tow of right jack by pressure sensor
Force value is simultaneously stored as thrust trial value Fi, and controller also acquires the right jack on the big one side of displacement or the jacking force of left jack
It is worth and is stored as thrust a reference value Gi；
5) controller distributes target pushing tow force value, the target of each intermediate jack according to thrust trial value Fi for each intermediate jack
Pushing tow force value Tn is respectively less than Fi, and along the big direction of displacement as low as displacement, and the target pushing tow force value of n intermediate jack is denoted as
Tn, the target pushing tow force value Tn of each intermediate jack are successively decreased successively based on Fi, amplitude, ao of successively decreasing T=(Fi-Gi)/(N+1),
Wherein N is total number of units of intermediate jack；
6) along displacement greatly to the small direction of displacement, by pressure sensor feedback each intermediate jack real-time pushing tow force value according to
After secondary priority reaches target pushing tow force value Tn, each intermediate jack is successively switched to suspension row by controller by reversal valve successively
The left jack on the small one side of displacement or right jack are finally switched to suspension stroke by journey；
7) process of step 2~step 6 is repeated, until when the difference on the right of the displacement of the box culvert left side and box culvert between displacement is equal to 0, it is complete
Into the process of synchronous adjustment, whole jack are switched into pushing tow stroke, pushing tow is synchronized with identical jacking force.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| CN108375361B (en) * | 2018-03-13 | 2019-09-03 | 中国矿业大学 | A method of detection hydraulic support effectively elapses stroke |
| CN110219256B (en) * | 2019-06-17 | 2021-02-19 | 中建六局土木工程有限公司 | Construction method for complex support of channel 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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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 |
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