CN104005342B - A kind of bridge deformation dynamic synchronization jacking compensation method and device - Google Patents
A kind of bridge deformation dynamic synchronization jacking compensation method and device Download PDFInfo
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- CN104005342B CN104005342B CN201410231687.XA CN201410231687A CN104005342B CN 104005342 B CN104005342 B CN 104005342B CN 201410231687 A CN201410231687 A CN 201410231687A CN 104005342 B CN104005342 B CN 104005342B
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Abstract
A kind of bridge deformation dynamic synchronization jacking compensation method and device, belong to Technology Bridge Strengthening field.Utilize main control computer, sub-pump, substation and the mutual co-ordination of position sensor, and in conjunction with field monitoring data, adopt multiple spot digital control scheme; to force value, lifting height, the parameters such as load difference; employing electronic system is monitored, and ensure that maltilevel security is protected, lcd screen display integral construction situation.
Description
Technical field
The present invention relates to a kind of bridge deformation dynamic synchronization jacking compensation method and device, belong to Technology Bridge Strengthening field.
Background technology
At present, the stratum deformation that urban construction construction produces and stress release will inevitably to surrounding enviroment generation disturbances to a certain degree, particularly this in Beijing is in the city of main ground traffic form with loop and grade separation, subway work will inevitably pass through a large amount of exist curves, and causes adverse effect to its normal use.Along with Beijing area subway new line construction constantly advances, this phenomenon will get more and more, the contradiction brought and potential safety hazard also will be more outstanding, therefore study subway work and have important practical significance to the impact analysis of contiguous exist curves and the safe operation of active defense technology to Urban Bridge.Structure jacking reduces the technical measures of construction on the impact of exist curves superstructure, traditional jack lifting technique, can not control bridge settlement by Initiative Defense
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of bridge deformation dynamic synchronization jacking compensation method.
A kind of bridge deformation dynamic synchronization jacking compensation method, containing following steps; Utilize main control computer, sub-pump, substation and the mutual co-ordination of position sensor, and in conjunction with field monitoring data, adopt multiple spot digital control scheme; to force value, lifting height, the parameters such as load difference; employing electronic system is monitored, and ensure that maltilevel security is protected, lcd screen can show integral construction situation.
A kind of bridge deformation dynamic synchronization jacking compensation method and device, main composition key element is:
(1), computer hydraulic tuning system
The important component part (computer hydraulic tuning system) of synchronization of jacking up plant equipment, only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is the box-shaped system of display and computer system integration;
(2), sub-pump (pilot controller)
This equipment, at abutment and pier location, plays hydraulic pump function, and collects the computer hydraulic tuning system function that job information is transferred in position, each operating point; Its formation mainly contains hydraulic oil storage fuel tank and hydraulic pressure distributor, hydraulic pump power engine, operation control panel, electronic type control valve and electronic pressure control valve;
(3), substation (manifold synchronization framework system) is containing the first substation, the second substation;
This device is located away from sub-pump, and being mounted on can not on the position of direct operation, and play conduction hydraulic pressure, and the data such as elevation and hydraulic pressure value are transferred to sub-pump, final data collects main control computer, controls operation process;
(4), position sensor
This device is located away from sub-pump, is mounted on Bridge position, measures the height change within the scope of 0-999mm, the error range of accuracy is ± 0.5mm or 0.2% within;
(5), hydraulic jack
Adopt double security device (closing hydraulic valve+locking nut mode) after jacking, prevent the bridge collapse accident that can not envision.
Advantage of the present invention is the top power of the distortion present situation according to bridge, dynamic conditioning jack, reaches the effect of control settlement development.
The present invention utilizes jack lifting technique, carries out certain dynamic compensation to sedimentation, and the synchronous jacking system of employing is formed primarily of equipment connections such as main control computer, sub-pump, substation and position sensors.Important component part-computer hydraulic the tuning system of synchronization of jacking up plant equipment, only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is the box-shaped system of display and computer system integration.Adopt multiple spot digital control scheme, the accuracy of jacking can be ensured; To force value, lifting height, the parameters such as load difference, adopt electronic system monitoring, ensure that maltilevel security is protected; Lcd screen can show integral construction situation, only needs a people can carry out Engineering Control at central controlling chamber, ensure that the convenience of construction.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is computer bridge synchronous jacking system schematic of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Detailed description of the invention
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1,
(1), computer hydraulic tuning system 1; The important component part (computer hydraulic tuning system) of synchronization of jacking up plant equipment, only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is the box-shaped system of display and computer system integration;
(2), sub-pump 2 (pilot controller) at abutment and pier location, play hydraulic pump function, and collect the computer hydraulic tuning system 1 that job information is transferred in position, each operating point; Its formation mainly contains hydraulic oil storage fuel tank and hydraulic pressure distributor, hydraulic pump power engine, operation control panel, electronic type control valve and electronic pressure control valve;
(3), substation (manifold synchronization framework system) is containing the first substation 4, substation 3, second;
First substation 4, substation 3, second connexon pump 2, being mounted on can not on the position of direct operation, and play conduction hydraulic pressure, and the data such as elevation and hydraulic pressure value are transferred to sub-pump, final data collects main control computer, controls operation process;
(4), position sensor is located away from sub-pump, is mounted on Bridge position, measures the height change within the scope of 0-999mm, the error range of accuracy is ± 0.5mm or 0.2% within;
(5), hydraulic jack; Adopt double security device (closing hydraulic valve+locking nut mode) after jacking, prevent the bridge collapse accident that can not envision.
A kind of bridge deformation dynamic synchronization jacking compensation method, containing following steps;
Step 1, preparatory items
On bridge floor, arrange some absolute altitudes and center line observation point before step (1), jacking, accurately measure the absolute altitude value of each point, and make a record, on the basis obtaining design accreditation, determine the accurate top lifting height of each point.And perform following preparation: jack-up system certificate authenticity: respectively to jack, displacement transducer, hydraulic pipe, main control computer, sub-pump, substation, ensure the working stability of each operating point.Equipment duration of work, distribution must keep stable and kilter; Jacking hydraulic system is arranged, system testing; Determine observation point; Check whether bridge has connection phenomenon.
Step (2) jack-up system structure division checks
Whether a, jack are installed firmly vertical;
Whether b, lifting-up support are installed firm;
Whether c, position limiting structure are installed firm, and whether spacing value establishes value size to meet the requirements;
Whether d, the facility affecting jacking are all removed;
Whether the connection of e, agent structure and other structure all removes.
Step (3), jack-up system are debugged
The main contents of debugging comprise:
Step a, hydraulic checking system; Oil cylinder is installed firmly correct; Oil pipe between pumping plant with oil cylinder is connected must be correct, reliable; Fuel tank liquid level, should reach specified altitude; 2 barrels of hydraulic oil for subsequent use, refuel and have to pass through oil filter; Whether hydraulic system is run normal, and oil circuit is with or without blocking or leak; Hydraulic oil is the need of passing through no-load running filter cleaning;
Step b, control system inspection: system installation in position has also been debugged complete; Each road power supply, its wiring, capacity and safety all should conform with the regulations: control device wiring, installation must be correct; Should ensure that data communication circuit is correct; Whether CLS control system is run normal, and whether hydraulic system is sensitive to control instruction reaction; Each sensing system, ensures that signal correctly transmits; Can system be elevated freely; The working condition of displacement transducer; Whether the working condition of various valve is normal, the need of replacing;
Step c, monitoring system inspection: dial gage is installed firmly, correctly, do not have omission; Signal transmissions is errorless;
The setting of steps d, initial value and reading: system original upload jointly to be determined together with Structural Engineer by hydraulic engineer and reported commander in chief, finally inputs CLS by Systems Operator; Read control system force snesor and displacement transducer initial value or made zero; Read the initial value of dial gage in monitoring system or made zero.
Step (4), deliver for a check determination a little;
The bridge floor at each bridge pier place is got 3 monitoring points, and 2 a bit on center line, are respectively used to absolute altitude and the midline position change of monitoring jacking process Bridge in bridge floor both sides, and delivering for a check a little after terminating as jacking.Relief initial value should be recorded, so that jacking is checked after completing before jacking.
Whether step (5), inspection bridge exist connection phenomenon;
Double check to be carried out to each position of bridge before jacking, check whether there is connection phenomenon.Free up Memory is had to meet.
Step (6), to weigh;
Pressurize test procedure: it is errorless that oil cylinder, oil pipe, pumping plant console, monitor etc. install inspection.
Weighing stage: for ensureing synchronously carrying out of jacking process, the actual loading at each Jacking point place should be measured before jacking; According to calculating jacking load when weighing, the mode of multistage loadings is adopted to carry out.Before jack jacking, should carry out pre-jacking, ensure that the jack girder place of connecing stablizes, first top power is 10t, and just top displacement is less than 2mm.
Step 2, pre-jacking;
Step 1., for guaranteeing that the synchronous evenly jacking of superstructure is carried out smoothly, add rubber sheet gasket in hydraulic jack and superstructure bottom surface.
Step 2., before jacking, for ensureing girder and jack contact stabilization and holding out against at the bottom of beam, first top power is 10t, just pushes up displacement and be less than 2mm.
Step 3., in whole work progress, need main control computer display is monitored in real time.
After step 4., height that the actual top lifting height of bridge and computer show confirms, solid mechanical jack, then cancels hydraulic jack.
Step 5., when abutment sedimentation reaches 5mm, girder jacking 6mm, bearing cushioning 4mm steel plate, then fall beam.
Step 3, jacking;
Step 1., according to after monitored results and Party A's agreement, when the adjacent pier stud maximum settlement of each girder is more than 5.0mm, subway stops construction, starts Lifting Equipment and starts jacking.Need in jacking process to carry out main Beam Elevation Real-Time Monitoring (certainty of measurement 0.1mm).
Step 2., jacking step determines according to bridge each pier sedimentation distribution situation.After jacking puts in place, pin mechanic jacks, then let out hydraulic jack.
Step 3., jacking process, need implement under Party A and expert's supervision on the scene.In jacking process, the data such as jacking position, temperature, top lifting height and load are added up, and fills in data statistic.
4., to jacking data step after Party A and expert study and judge, implements next step jacking.
The step of dynamic jacking is:
Step 1., installation position displacement sensor;
Step 2., install hydraulic jack;
Step 3., mounting end controller and hydraulic jack, connect Level monitoring sensor;
Step 4., sub-pump is installed;
Step 5., main control computer and connexon pump are installed;
Step 6., start main control computer and input basic parameter;
Step 7., main elevation sensor is set, hydraulic jack is set, debugging complete equipment;
Step 8., implement bridge jacking;
Jacking process steps:
Step is 1., construction is when marching into the arena, and first carries out field verification to bridge construction, and if different design, should contact with design.
Step is 2., before jacking, reply bridge appearance checks, when discovery is compared with front assessment detection, bridge has newly-increased disease or newly-increased when damaging, should in time and owner and designing unit feed back and link up.
Step 3., this jacking design support top system must be supported on abutment foundation.
Step 4., for guarantee bridge do not occur sedimentation dash forward, during constructing metro tunnel, should take measures to make bridge settlement speed be less than 2mm/d.When can not be met this require, support top designing unit should be notified in time.
Step 5., face apart from bridge foundation 2 Bei Dong footpath time, bridge construction should carry out real-time settlement monitoring.Now, support top measure should be debugged complete, in good condition, can start jacking at any time.
Step 6., guarantee management jack do not want eccentric setting, cause unstability (OverTuning).
After step 7., bridge jacking terminates, strong point hydraulic jack need fix locknut locking nut, then hydraulic jack.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (3)
1. a bridge deformation dynamic synchronization jacking compensation method, is characterized in that containing following steps; Utilize main control computer, sub-pump, substation and the mutual co-ordination of position sensor, and in conjunction with field monitoring data, adopt multiple spot digital control scheme, to force value, lifting height, load difference parameter, employing electronic system is monitored, and ensure that maltilevel security is protected, lcd screen display integral construction situation;
Containing following steps;
Step 1, preparatory items;
Step 1), on bridge floor, arrange some absolute altitudes and center line observation point before jacking, accurately measure the absolute altitude value of each point, and make a record, on the basis obtaining design accreditation, determine the accurate top lifting height of each point; And perform following preparation: jack-up system certificate authenticity: respectively jack, displacement transducer, hydraulic pipe, main control computer, sub-pump, substation are checked, ensure the working stability of each operating point; Equipment duration of work, distribution must keep stable and kilter; Jacking hydraulic system is arranged, system testing; Determine observation point; Check whether bridge has connection phenomenon;
Step 2) inspection of jack-up system structure division;
Whether a, jack are installed firmly vertical;
Whether b, lifting-up support are installed firm;
Whether c, position limiting structure are installed firm, and whether spacing value establishes value size to meet the requirements;
Whether d, the facility affecting jacking are all removed;
Whether the connection of e, agent structure and other structure all removes;
Step 3), jack-up system debugging;
The main contents of debugging comprise:
Step a, hydraulic checking system: oil cylinder is installed firmly correct; Oil pipe between pumping plant with oil cylinder is connected must be correct, reliable; Fuel tank liquid level should reach specified altitude; 2 barrels of hydraulic oil for subsequent use, refuel and have to pass through oil filter; Whether hydraulic system is run normal, and oil circuit is with or without blocking or leak; Hydraulic oil is the need of passing through no-load running filter cleaning;
Step b, control system inspection: system installation in position has also been debugged complete; Each road power supply, its wiring, capacity and safety all should conform with the regulations: control device wiring, installation must be correct; Should ensure that data communication circuit is correct; Whether CLS control system is run normal, and whether hydraulic system is sensitive to control instruction reaction; Each sensing system, ensures that signal correctly transmits; Can system be elevated freely; The working condition of displacement transducer; Whether the working condition of various valve is normal, the need of replacing;
Step c, monitoring system inspection: dial gage is installed firmly, correctly, do not have omission; Signal transmissions is errorless;
The setting of steps d, initial value and reading: system original upload jointly to be determined together with Structural Engineer by hydraulic engineer and reported commander in chief, finally inputs CLS by Systems Operator; Read control system force snesor and displacement transducer initial value or made zero; Read the initial value of dial gage in monitoring system or made zero;
Step 4), deliver for a check determination a little;
The bridge floor at each bridge pier place is got 3 monitoring points, and 2 a bit on center line, are respectively used to absolute altitude and the midline position change of monitoring jacking process Bridge in bridge floor both sides, and deliver for a check a little after terminating as jacking; Relief initial value should be recorded, so that jacking is checked after completing before jacking;
Step 5), check bridge whether there is connection phenomenon;
Double check to be carried out to each position of bridge before jacking, check whether there is connection phenomenon; Free up Memory is had to meet;
Step 6), weigh;
Pressurize test procedure: it is errorless that oil cylinder, oil pipe, pumping plant console, monitor install inspection;
Weighing stage: for ensureing synchronously carrying out of jacking process, the actual loading at each Jacking point place should be measured before jacking; According to calculating jacking load when weighing, the mode of multistage loadings is adopted to carry out; Before jack jacking, should carry out pre-jacking, ensure that the jack girder place of connecing stablizes, first top power is 10t, and just top displacement is less than 2mm;
Step 2, pre-jacking;
Step 1., for guaranteeing that the synchronous evenly jacking of superstructure is carried out smoothly, add rubber sheet gasket in hydraulic jack and superstructure bottom surface;
Step 2., before jacking, for ensureing girder and jack contact stabilization and holding out against at the bottom of beam, first top power is 10t, just pushes up displacement and be less than 2mm;
Step 3., in whole work progress, need main control computer display is monitored in real time;
After step 4., height that the actual top lifting height of bridge and computer show confirms, solid mechanical jack, then cancels hydraulic jack;
Step 5., when abutment sedimentation reaches 5mm, girder jacking 6mm, bearing cushioning 4mm steel plate, then fall beam;
Step 3, jacking;
Step 1., according to after monitored results and Party A's agreement, when the adjacent pier stud maximum settlement of each girder is more than 5.0mm, subway stops construction, starts Lifting Equipment and starts jacking; Need in jacking process to carry out main Beam Elevation Real-Time Monitoring, certainty of measurement 0.1mm;
Step 2., jacking step determines according to bridge each pier sedimentation distribution situation; After jacking puts in place, pin mechanic jacks, then let out hydraulic jack;
Step 3., jacking process, need implement under Party A and expert's supervision on the scene; In jacking process, jacking position, temperature, top lifting height and payload data are added up, and fills in data statistic;
4., to jacking data step after Party A and expert study and judge, implements next step jacking;
The step of dynamic jacking is:
Step 1., installation position displacement sensor;
Step 2., install hydraulic jack;
Step 3., mounting end controller and hydraulic jack, connect Level monitoring sensor;
Step 4., sub-pump is installed;
Step 5., main control computer and connexon pump are installed;
Step 6., start main control computer and input basic parameter;
Step 7., main elevation sensor is set, hydraulic jack is set, debugging complete equipment;
Step 8., implement bridge jacking.
2. a kind of bridge deformation dynamic synchronization jacking compensation method according to claim 1, is characterized in that containing jacking process steps:
Step is 1., construction is when marching into the arena, and first carries out field verification to bridge construction, and if different design, should contact with design;
Step is 2., before jacking, reply bridge appearance checks, when discovery is compared with front assessment detection, bridge has newly-increased disease or newly-increased when damaging, should in time and owner and designing unit feed back and link up;
Step 3., this jacking design support top system must be supported on abutment foundation;
Step 4., for guarantee bridge do not occur sedimentation dash forward, during constructing metro tunnel, should take measures to make bridge settlement speed be less than 2mm/d; When can not be met this require, support top designing unit should be notified in time;
Step 5., face apart from bridge foundation 2 Bei Dong footpath time, bridge construction should carry out real-time settlement monitoring; Now, support top measure should be debugged complete, in good condition, can start jacking at any time;
Step 6., guarantee management jack do not want eccentric setting, cause unstability;
After step 7., bridge jacking terminates, locking nut fixed support point hydraulic jack, re-uses hydraulic jack.
3. a kind of bridge deformation dynamic synchronization jacking compensation arrangement used according to claim 1 or claim 2, is characterized in that comprising:
(1), computer hydraulic tuning system;
The important component part computer hydraulic tuning system of synchronization of jacking up plant equipment, only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is the box-shaped system of display and computer system integration;
(2), sub-pump and pilot controller at abutment and pier location, play hydraulic pump function, and collect the computer hydraulic tuning system function that job information is transferred in position, each operating point; Its formation mainly contains hydraulic oil storage fuel tank and hydraulic pressure distributor, hydraulic pump power engine, operation control panel, electronic type control valve and electronic pressure control valve;
(3), substation and manifold synchronization framework system contain the first substation, the second substation and are located away from sub-pump, being mounted on can not on the position of direct operation, play conduction hydraulic pressure, and elevation and hydraulic pressure value data are transferred to sub-pump, final data collects main control computer, controls operation process;
(4), position sensor is located away from sub-pump, is mounted on Bridge position, measures the height change within the scope of 0-999mm, the error range of accuracy is ± 0.5mm or 0.2% within;
(5), hydraulic jack; Adopt double security device after jacking, close hydraulic valve+locking nut mode, prevent the bridge collapse accident that can not envision.
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| CN201410231687.XA CN104005342B (en) | 2014-05-28 | 2014-05-28 | A kind of bridge deformation dynamic synchronization jacking compensation method and device |
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| CN201410231687.XA CN104005342B (en) | 2014-05-28 | 2014-05-28 | A kind of bridge deformation dynamic synchronization jacking compensation method and device |
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| CN104005342B true CN104005342B (en) | 2016-04-06 |
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Families Citing this family (4)
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| CN106758874A (en) * | 2016-12-14 | 2017-05-31 | 湖南城市学院 | The processing method of combined type beam bridge seat and application |
| CN107724254A (en) * | 2017-08-23 | 2018-02-23 | 北京公联洁达公路养护工程有限公司 | The synchronization of jacking up of construction of bridge T beam changes construction method with making |
| CN113699890A (en) * | 2021-08-27 | 2021-11-26 | 上海市基础工程集团有限公司 | Automatic compensation method for temporary support elevation for bridge prefabricated assembly component |
| CN113718665A (en) * | 2021-09-02 | 2021-11-30 | 中铁二十局集团第三工程有限公司 | Bridge pier changing method |
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| 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 |
| CN202390764U (en) * | 2011-12-23 | 2012-08-22 | 中交第三航务工程局有限公司 | PLC (Programmable Logic Controller) hydraulic proportional synchronous jacking system for bridge jacking |
| CN203067428U (en) * | 2012-12-26 | 2013-07-17 | 湖南华鼎建筑科技有限公司 | Control system of hydraulic power unit |
| CN203350751U (en) * | 2013-06-17 | 2013-12-18 | 北京市政路桥管理养护集团有限公司 | Computer control-based hydraulic synchronous lifting-up device for bridge integrate displacement |
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