CN104074143B - Prestressing force intelligent circulation mud jacking system and its control method - Google Patents
Prestressing force intelligent circulation mud jacking system and its control method Download PDFInfo
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- CN104074143B CN104074143B CN201410338844.7A CN201410338844A CN104074143B CN 104074143 B CN104074143 B CN 104074143B CN 201410338844 A CN201410338844 A CN 201410338844A CN 104074143 B CN104074143 B CN 104074143B
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Abstract
A kind of prestressing force intelligent circulation mud jacking system and its control method, mud jacking pipeline between mudjack and stock inlet is provided with pressure compensator, described pressure compensator includes piston and elastic body, the piston termination and mud jacking pipeline communication, the elastic force of the elastic body are pressed into mud jacking pipeline for driving piston termination；Pressurizer is respectively arranged in stock inlet and grout outlet, the slurries amount and the slurries amount in discharge beam duct that control enters in beam duct respectively；Electromagnetic flowmeter is respectively arranged in stock inlet and grout outlet, measures the flow signal of stock inlet and grout outlet respectively；Mud jacking pump plunger is two groups, realizes that mud jacking acts using alternate mode is carried out, ratio of mud value rate-determining steps use closed-loop control, set effective circulating pressure value；Dwell pressure value：The lower limit of dwell pressure；The higher limit of dwell pressure；Dwell time value is controlled to component slurry.Its advantage is that slurry pressure is stable, and mud jacking is closely knit, and component quality is good.
Description
Technical field
The present invention relates to prestress engineering technical field, more particularly to a kind of prestressing force intelligent circulation mud jacking system and its control
Method processed.
Background technology
In bridge construction process, the quality of inherent stress mud-jacking construction for pre-stressed bridge security and durability extremely
Close it is important, therefore post-tensioned prestressing pipeline mud jacking construction turn into pre-stressed bridge construction critical process.
Chinese patent CN103711315 discloses entitled：" intelligent vacuum circulation mud jacking system " patent, the patent is solution
The problem of certainly traditional mud jacking system grouting quality is unstable, the technical scheme of program control triple valve is set using in return pipe, though carry
High grouting quality, but because slurry is in transmitting procedure, its pressure is change, causes the grouting quality of slurry fractions position
It is unstable.
Chinese patent CN103711316 discloses entitled：" control method of intelligent pulping system ", the patent is to slurry
Control be that major ingredient and auxiliary material are subjected to Weight control respectively, control process is opened loop control, and the final slurry ratio of mud can not
Carry out finer control；And its mudjack only sets dwell pressure value only with one in automatic mud jacking step, uses
If control method be pressurize during pressure value drop to below pressure criteria value, control centre send benefit slurry instruction, press again
Slurry, carries out pressurize, this method, effectively squeezing quality can not be controlled, caused again after reaching pressure criteria value
Grouting quality is unstable.
Traditional mud-jacking technology is due to the ratio of mud（The ratio of mud is slurries Specifeca tion speeification）There is no strict control, it is live past
Toward by increasing water consumption mobile performance is improved, it is excessive to ultimately result in bleeding rate, formed in pipeline space and secreting come from by
Water, accelerate steel strand wires corrosion.
These problems existing for above-mentioned traditional mud-jacking technology are by the durability of serious influence structure, first, losing steel strand wires
Deprotection is easy to corrosion, and the corrosion of power muscle, which has, has further slackened cohesive force of the slurry to power muscle, causes effective prestress to decline.
Cause steel strand wires and concrete to fail to form an overall collective effect second, cavity in pipeline be present, reduce the rigidity of structure with
Bearing capacity.
The content of the invention
It is an object of the invention to provide a kind of pressure stability, and solving the pre- of above-mentioned pipeline pneumatic mortar leakiness technical problem should
Power intelligent circulation mud jacking system and its control method.
The solution of the present invention is such：
A kind of prestressing force intelligent circulation mud jacking system, including homogenizer, electric cabinet, low speed slurry storing tank, mudjack, pressure
Force snesor, electromagnetic flowmeter, water intaking valve, weighing sensor, pressurizer, it is characterised in that：Mudjack and stock inlet it
Between mud jacking pipeline be provided with pressure compensator, described pressure compensator includes piston and elastic body, the piston
Termination and mud jacking pipeline communication, the elastic force of the elastic body are pressed into mud jacking pipeline for driving piston termination.
More specifically technical scheme also includes：Described pressurizer is respectively arranged in stock inlet and grout outlet, controls respectively
The slurries amount and the slurries amount in discharge beam duct that system enters in beam duct.
Further：Described electromagnetic flowmeter is respectively arranged in stock inlet and grout outlet, measures stock inlet respectively and goes out
Starch the flow signal of mouth.
Further：The mudjack has two groups of mud jacking plungers, realizes that mud jacking moves using reciprocal alternate mode is carried out
Make.
Further：Described elastic body includes the spring being arranged in piston-cylinder, the spring one end and piston
Connection, its spring force ejector piston are protruding.
A kind of control method being controlled to prestressing force intelligent circulation mud jacking system described in claim 1, its feature exist
In：Including step：
（1）Ratio of mud value rate-determining steps：Established standardses ratio of mud value is formulated according to construction, measures the water ash of homogenizer
Ratio is compared with established standardses ratio of mud value, if the actual ratio of mud is less than standard glue ratio, system send a signal into
Water valve, it is automatically replenished；If actual water-cement ratio is higher than standard glue ratio, cement, additive are added；Until system is real-time
The water-cement ratio of detection reaches established standardses glue ratio；After system detectio water-cement ratio is qualified, dump valve is sent a control signal to, is sent out
Send enabling signal to low speed slurry storing tank, dump valve to automatically open up, the qualified slurries of water-cement ratio are delivered to low speed slurry storing tank；
（2）Control mudjack alternation step：Mudjack uses two groups of mud jacking plungers, and control mode is：When first group
When plunger will starch press-in duct, second group of plunger draws slurries in low speed slurry storing tank；When first group of plunger draws low speed slurry storing tank
During interior slurries, slurries are pressed into duct by second group of plunger, and two groups of plunger alternating movements carry out mud jacking；
（3）Into and out of slurry mouth pressurizer job step：Pressurizer is installed respectively in stock inlet and grout outlet, using pressure
Force snesor measures slurry pressure in beam duct, and sets：
A：Efficient Cycle pressure value；
B：Dwell pressure value：
C：The lower limit of dwell pressure；
D：The higher limit of dwell pressure；
E：Dwell time is worth；
When slurry pressure meets Efficient Cycle value in beam duct, system sends control signal, pulp to pressurizer
Mouth pressurizer is closed, and mudjack continues slurries being pressed into duct, raises slurry pressure in duct；System acquisition pressure passes
Sensor signal, after slurry pressure meets the dwell pressure value of setting in beam duct, system sends stop type to mudjack
Number, control signal is sent to pressurizer, stock inlet pressurizer is closed, and automatic mud jacking program enters packing stage；When beam structure
When slurry pressure is less than the lower limit of dwell pressure in part duct, system sends enabling signal to mudjack, is sent out to pressurizer
Control signal is sent, stock inlet pressurizer is opened, and mudjack continues slurries being pressed into duct, makes slurry pressure liter in duct
It is high；When pressure reaches the higher limit of setting dwell pressure in duct, system sends stop signal to mudjack, to pressurizer
Control signal is sent, stock inlet pressurizer is closed, and after reaching dwell time value, system sends signal to each device, terminates
Whole mud jacking process.
It is an advantage of the invention that slurry pressure is stable, mud jacking is closely knit, and component quality is good.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of pressure compensator 8 of the present invention.
Fig. 3 is the control flow block diagram of control method of the present invention.
In accompanying drawing：1st, weighing sensor, 2, homogenizer, 3, water intaking valve, 4 dump valves, 5, low speed slurry storing tank, 6, mud jacking
Pump, 7, electric cabinet, 8, pressure compensator, 9, device for quickly disassembling, 10, stock inlet pressurizer, 11, stock inlet electromagnetic flowmeter,
12nd, pressure sensor, 13, beam duct, 14, grout outlet electromagnetic flowmeter, 15, grout outlet pressurizer, 16, piston gas
Cylinder, 17, spring, 18, piston, 19, three-way connection.
Embodiment
As shown in figure 1, the prestressing force intelligent circulation mud jacking system of the present invention, including homogenizer 2, electric cabinet 7, low speed
Slurry storing tank 5, mudjack 6, pressure sensor 12, stock inlet electromagnetic flowmeter 11, grout outlet electromagnetic flowmeter 14, water intaking valve 3, title
Retransmit sensor 1, air compressor machine, stock inlet pressurizer 10, grout outlet pressurizer 15, the mud jacking between mudjack and stock inlet
Pipeline is provided with pressure compensator 8, and described pressure compensator 8 includes piston 18 and elastic body, the end of piston 18
Head and mud jacking pipeline communication, the elastic force of the elastic body are pressed into mud jacking pipeline for driving piston termination.
As shown in Fig. 2 described elastic body includes the spring 17 being arranged in piston-cylinder 16, described one end of spring 17
It is connected with piston 18, its spring force ejector piston is protruding, driving piston termination press-in mud jacking pipeline.
Stock inlet is provided with pressure sensor 12, stock inlet electromagnetic flowmeter 11, stock inlet pressurizer 10, grout outlet
It is provided with grout outlet electromagnetic flowmeter 14, grout outlet pressurizer 15.
The plunger of mudjack 6 is two groups, realizes that mud jacking acts using alternate mode is carried out.
A kind of as shown in figure 3, controlling party being controlled to prestressing force intelligent circulation mud jacking system described in claim 1
Method, including step：
（1）Ratio of mud value rate-determining steps：, using close-loop control mode, established standardses ratio of mud value is formulated according to construction, is surveyed
The grey value of water of homogenizer is taken, if the actual ratio of mud is less than standard ratio of mud value, to be compared with established standardses water ash value
System sends a signal to water intaking valve, is automatically replenished；If actual water-cement ratio is higher than standard glue ratio, cement, addition are added
Agent；Until the ratio of mud that system detects in real time reaches established standardses ratio of mud value；After the system detectio ratio of mud is qualified, control is sent
Signal sends enabling signal to low speed slurry storing tank, dump valve and automatically opened up, the qualified slurries of the ratio of mud are delivered to dump valve
Low speed slurry storing tank；
（2）Control mudjack alternation step：Mudjack uses two groups, and control mode is：When first group of mudjack will
During slurry press-in duct, second group of plunger draws slurries in low speed slurry storing tank；When first group of plunger draws slurries in low speed slurry storing tank
When, slurries are pressed into duct by second group of plunger, and two groups of plunger alternating movements carry out mud jacking；
（3）Into and out of slurry mouth pressurizer job step：Pressurizer is installed respectively in stock inlet and grout outlet, using pressure
Force snesor measures slurry pressure in beam duct, and sets：
A：Efficient Cycle pressure value；
B：Dwell pressure value：
C：The lower limit of dwell pressure；
D：The higher limit of dwell pressure；
E：Dwell time is worth；
When slurry pressure meets Efficient Cycle value in beam duct, system sends control signal, pulp to pressurizer
Mouth pressurizer is closed, and mudjack continues slurries being pressed into duct, raises slurry pressure in duct；System acquisition pressure passes
Sensor signal, after slurry pressure meets the dwell pressure value of setting in beam duct 13, system is sent to mudjack to be stopped
Model, control signal is sent to pressurizer, stock inlet pressurizer is closed, and automatic mud jacking program enters packing stage；Work as beam
When slurry pressure is less than the lower limit of dwell pressure in member aperture, system sends enabling signal to mudjack, to pressurizer
Control signal is sent, stock inlet pressurizer is opened, and mudjack continues slurries being pressed into duct, makes slurry pressure liter in duct
It is high；When pressure reaches the higher limit of setting dwell pressure in duct, system sends stop signal to mudjack, to pressurizer
Control signal is sent, stock inlet pressurizer is closed, and after reaching dwell time value, system sends signal to each device, terminates
Whole mud jacking process.
The present embodiment operation principle is：
Parameter setting：According to practice of construction formula, standard glue ratio is inputted by touch-screen, setting adds the weight of water
Amount, the mixing time of setting high-speed mixer 2, pressurize upper lower limit value is set, set the dwell time.
Slurries stir：By touch screen operation, start homogenizer 2, system, which is sent to homogenizer 2 and sent, to be started
Signal, sent to water intaking valve 3 and add water signal, when addition water reaches setting value, add cement, additive, weighing sensor 1
The proportion of monitoring charging in real time in fill process, detection data are sent to the actual ratio of mud of system progress and calculated in real time, with setting
The ratio of mud is compared, if the actual ratio of mud is less than setting value, system sends a signal to water intaking valve 3, is automatically replenished；It is if real
The border ratio of mud is higher than setting value, then adds cement, additive；Until the ratio of mud that system detects in real time reaches the setting ratio of mud and closed
Lattice scope.After the system detectio ratio of mud is qualified, dump valve 4 is sent a control signal to, send enabling signal to low speed slurry storing tank 5,
Dump valve 4 is automatically opened up, and the qualified slurries of the ratio of mud are delivered into low speed slurry storing tank 5.
Automatic mud jacking：Slurries are delivered to low speed slurry storing tank 5, the electric motor starting of low speed slurry storing tank 5, stirring at low speed slurries, ensure
Slurries do not precipitate, and system starts to perform automatic mud jacking program, and mudjack 6 carries out alternating movement by two groups of plungers and realizes that mud jacking moves
Make, when slurries are pressed into duct by first group of plunger, second group of plunger draws slurries in low speed slurry storing tank 5；When first group of plunger
When drawing slurries in low speed slurry storing tank 5, slurries are pressed into duct by second group of plunger, and two groups of plunger alternating movements carry out mud jacking, had
Effect avoids the pulsation of slurry pressure in duct.Pressure compensator 8 is installed in pipeline, makes pressure and stability of flow.Stock inlet pressure
Force snesor 12, stock inlet electromagnetic flowmeter 11, stock inlet pressurizer 10, grout outlet electromagnetic flowmeter 14, grout outlet pressurize
Device 15, system acquisition stock inlet electromagnetic flowmeter 11, the signal of grout outlet electromagnetic flowmeter 14 are calculated, and meet Efficient Cycle
After condition, system sends control signal to grout outlet pressurizer 15, and grout outlet pressurizer 15 is closed, and mudjack 6 continues will
In slurries press-in duct, raise slurry pressure in duct, the signal of system acquisition pressure sensor 12, when slurry pressure in duct
Control signal is sent after meeting the dwell pressure of setting, stock inlet pressurizer 10 is closed, and automatic mud jacking program enters pressurize rank
Section, when slurry pressure is less than the lower limit for setting dwell pressure in duct, system sends enabling signal to mudjack 6, simultaneously
Control signal is sent to stock inlet pressurizer 10, stock inlet pressurizer 10 is opened, and mudjack 6 continues slurries being pressed into duct
It is interior, raise in duct slurry pressure, when pressure reaches the higher limit of setting dwell pressure in duct, system is to mudjack 6
Stop signal is sent, sends control signal to stock inlet pressurizer 10, stock inlet pressurizer 10 is closed, and reaches the dwell time
Afterwards, system sends signal to each device, terminates whole mud jacking process.
Report output：System records mud jacking process data, including the actual ratio of mud, slurries mixing time, pressurize pressure automatically
The data such as power, dwell time.All data can be exported in a manner of chart and form.Mud jacking process data is in mud jacking mistake
Synchronous stored record in journey, prevent artificially to change completely.
Pressure compensator 8 is arranged on a joint of the three-way connection 19 of mud jacking pipeline, forms three-way connection connection
The structure at cylinder piston end, when the pulp pressure oscillation of mudjack 6 is to peak, pressure in mud jacking pipeline is by cylinder piston
18 push away inward, compression spring 17, reduce the pressure in pipeline, when the pulp pressure oscillation of mudjack 6 is to minimum point, are pressed
For contracting spring 17 because suffered external force reduces, spring 17 recovers original length by cylinder piston 18 toward extrapolating, and increases overpressure,
Serve pressure compensated effect.
Claims (1)
1. the control method that a kind of prestressing force intelligent circulation mud jacking system is controlled, wherein, described prestressing force intelligent circulation
Mud jacking system, including homogenizer, electric cabinet, low speed slurry storing tank, mudjack, pressure sensor, electromagnetic flowmeter, water inlet
Valve, weighing sensor, pressurizer；Mud jacking pipeline between mudjack and stock inlet is provided with pressure compensator, described
Pressure compensator include piston and elastic body, the piston termination and mud jacking pipeline communication, the bullet of the elastic body
Power is pressed into mud jacking pipeline for driving piston termination；Pressure compensator is arranged on a joint of the three-way connection of mud jacking pipeline
On, the structure that three-way connection connects cylinder piston end is formed, when the pulp pressure oscillation of mudjack is to peak, mud jacking pipeline
Interior pressure pushes away cylinder piston inward, compression spring, when the pulp pressure oscillation of mudjack is to minimum point, by compression spring
Because suffered external force reduces, spring recovers original length by the past extrapolation of cylinder piston；Described pressurizer be respectively arranged in into
Mouth and grout outlet are starched, the slurries amount and the slurries amount in discharge beam duct that control enters in beam duct respectively；Described
Electromagnetic flowmeter is respectively arranged in stock inlet and grout outlet, measures the flow signal of stock inlet and grout outlet respectively；The mud jacking
Pump is two groups, realizes that mud jacking acts using alternate mode is carried out；Described elastic body includes being arranged in piston-cylinder
Spring, the spring one end is connected with piston, and its spring force ejector piston is protruding；
Characterized in that, the control method that prestressing force intelligent circulation mud jacking system is controlled comprises the following steps：
（1）Ratio of mud rate-determining steps：Established standardses ratio of mud value is formulated according to construction, measures the ratio of mud of homogenizer with setting
Calibrate the quasi- ratio of mud to be compared, if the actual ratio of mud is less than standard ratio of mud value, system sends a signal to water intaking valve, carries out certainly
Dynamic moisturizing；If the actual ratio of mud is higher than standard ratio of mud value, cement, additive are added；Until the water ash that system detects in real time
Than reaching established standardses ratio of mud value；After the system detectio ratio of mud is qualified, dump valve is sent a control signal to, sends enabling signal
To low speed slurry storing tank, dump valve is automatically opened up, and the qualified slurries of the ratio of mud are delivered into low speed slurry storing tank；
（2）Control mud jacking pump piston alternation step：Mudjack uses two groups of pistons, and control mode is：When first group of mud jacking
When slurries are pressed into duct by pump piston, second group of piston draws slurries in low speed slurry storing tank；When first group of piston draws low speed storage
In slurry bucket during slurries, slurries are pressed into duct by second group of piston, and two groups of piston reciprocating alternating movements carry out mud jacking；
（3）Into and out of slurry mouth pressurizer job step：Pressurizer is installed respectively in stock inlet and grout outlet, passed using pressure
Sensor measures slurry pressure in beam duct, and sets：
A：Efficient Cycle pressure value；
B：Dwell pressure value：
C：The lower limit of dwell pressure；
D：The higher limit of dwell pressure；
E：Dwell time is worth；
When slurry pressure meets Efficient Cycle value in beam duct, system sends control signal to pressurizer, and grout outlet is protected
Pressure device is closed, and mudjack continues slurries being pressed into duct, raises slurry pressure in duct；System acquisition pressure sensor
Signal, after slurry pressure meets the dwell pressure value of setting in beam duct, system is sent to mudjack stops model, to
Pressurizer sends control signal, and stock inlet pressurizer is closed, and automatic mud jacking program enters packing stage；When beam duct
When interior slurry pressure is less than the lower limit of dwell pressure, system sends enabling signal to mudjack, sends and controls to pressurizer
Signal, stock inlet pressurizer are opened, and mudjack continues slurries being pressed into duct, raise slurry pressure in duct；Work as hole
When pressure reaches the higher limit of setting dwell pressure in road, system sends stop signal to mudjack, sends and controls to pressurizer
Signal processed, stock inlet pressurizer is closed, and after reaching dwell time value, system sends signal to each device, terminates whole pressure
Slurry process.
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| CN201410338844.7A CN104074143B (en) | 2014-07-17 | 2014-07-17 | Prestressing force intelligent circulation mud jacking system and its control method |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201410338844.7A CN104074143B (en) | 2014-07-17 | 2014-07-17 | Prestressing force intelligent circulation mud jacking system and its control method |
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| CN104074143B true CN104074143B (en) | 2018-03-09 |
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| CN104568642A (en) * | 2014-12-26 | 2015-04-29 | 柳州黔桥工程材料有限公司 | Method for automatically judging water-to-binder ratio of mudjacking slurry |
| CN104614271B (en) * | 2014-12-26 | 2018-06-15 | 柳州黔桥工程材料有限公司 | The device of automatic judgement mud jacking slurries water-cement ratio |
| CN104878697B (en) * | 2015-06-03 | 2016-10-26 | 河北高达电子科技有限公司 | A kind of squeezing trolley |
| CN106436582B (en) * | 2016-10-15 | 2018-04-20 | 中国铁道科学研究院铁道建筑研究所 | A kind of railway aids in the automatic mud jacking all-in-one machine of vacuum |
| CN106869029B (en) * | 2017-01-17 | 2018-02-09 | 陈宇豪 | Bridge prestress pipeline ftercompction sizing device and its construction method |
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| CN109795031B (en) * | 2019-03-21 | 2024-05-17 | 中铁十四局集团第三工程有限公司 | Automatic slurry supplementing device for post-tensioning prefabricated beam slab and application method of automatic slurry supplementing device |
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| CN111240372A (en) * | 2020-01-15 | 2020-06-05 | 淮南东华欧科矿山支护设备有限责任公司 | Water-cement ratio control device for mine |
| CN111650365B (en) * | 2020-07-14 | 2021-05-07 | 清华大学 | Intelligent grouting multifunctional test device |
| CN111877347B (en) * | 2020-07-31 | 2021-08-10 | 南京地下空间高技术产业研究院有限公司 | A slip casting device for underground continuous wall connects |
| CN114352328A (en) * | 2022-01-06 | 2022-04-15 | 徐州徐工基础工程机械有限公司 | Drilling and grouting anchor trolley grouting system and control method thereof |
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| CN2358306Y (en) * | 1998-11-26 | 2000-01-12 | 何宝愚 | Plunger-type compensation pressure valve |
| JP2004263542A (en) * | 2003-02-12 | 2004-09-24 | Anderson Technology Kk | Device for injecting grout into cable sheath of pc structure and grout injection method |
| KR100555247B1 (en) * | 2005-07-30 | 2006-03-03 | 노윤근 | Cmputer-controlled lifting system for synchronous lifting of heavy structures at multi-point and lifting method of bridge using the system |
| CN102359072A (en) * | 2011-08-03 | 2012-02-22 | 李跃军 | Grouting quality control method and grouting quality control device for bridge prestressed pipeline based on density parameters |
| CN102505634A (en) * | 2011-09-29 | 2012-06-20 | 桂岚 | Prestress duct grouting quality control method based on double parameters including tube capacity and density |
| CN102704403B (en) * | 2012-06-13 | 2014-09-17 | 湖南联智桥隧技术有限公司 | Prestressed mud jacking trolley and circulating mud jacking method |
| CN204001775U (en) * | 2014-07-17 | 2014-12-10 | 柳州市桥厦工程管材有限公司 | Prestressing force intelligent circulation mud jacking system |
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