CN104005342A - Method and device for dynamic synchronous jacking compensation of bridge distortion - Google Patents
Method and device for dynamic synchronous jacking compensation of bridge distortion Download PDFInfo
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- CN104005342A CN104005342A CN201410231687.XA CN201410231687A CN104005342A CN 104005342 A CN104005342 A CN 104005342A CN 201410231687 A CN201410231687 A CN 201410231687A CN 104005342 A CN104005342 A CN 104005342A
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Abstract
The invention provides a method and a device for dynamic synchronous jacking compensation of bridge distortion and belongs to the technical field of bridge strengthening. A master control computer, a sub-pump, a substation and a height sensor work in coordination with each other, in combination with field monitoring data, parameters such as a pressure value, a rising height and a load are monitored by use of an electronic system in a multi-point numerical control manner, and therefore, multiple safety protection is ensured; an LCD (Liquid Crystal Display) screen is used for displaying the overall construction conditions.
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 produce disturbance to a certain degree to surrounding enviroment, particularly thisly in Beijing take loop and grade separation in the city of main ground traffic form, subway work will inevitably pass through a large amount of existing bridges, and its normal use is caused to adverse effect.Along with subway new line construction in Beijing area constantly advances, this phenomenon will get more and more, the contradiction of bringing and potential safety hazard also will be more outstanding, therefore study subway work the impact analysis of contiguous existing bridge and active guard technology are had important practical significance to the safe operation of Urban Bridge.Structure jacking is to reduce the technical measures of construction on existing bridge superstructure impact, and traditional jacking technology, 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 bridge deformation dynamic synchronization jacking compensation method, contains following steps; Utilize master 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 parameter such as load is poor; the monitoring of employing electronic system, has guaranteed maltilevel security protection, and lcd screen can show integral construction situation.
The jacking compensation method of bridge deformation dynamic synchronization and a device, main composition key element is:
(1), computer hydraulic tuning system
The important component part of synchronization of jacking up plant equipment (computer hydraulic tuning system), only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is display and the integrated box-shaped system of computer system;
(2), sub-pump (pilot controller)
This equipment, at abutment and pier location, plays hydraulic pump function, and collects in each position, operating point the computer hydraulic tuning system function that job information is transferred to; 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) contains the first substation, the second substation;
This device is located away from sub-pump, be mounted on can not the position of direct operation on, play conduction hydraulic pressure, and by transfer of data such as elevation and hydraulic pressure values to sub-pump, final data is collected master 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% in;
(5), hydraulic jack
After jacking, adopt double security device (closing hydraulic valve+locking nut mode), the bridge collapse accident that prevention can not be envisioned.
Advantage of the present invention is the distortion present situation according to bridge, dynamically adjusts the top power of jack, reaches the effect of controlling sedimentation development.
The present invention utilizes jacking technology, and sedimentation is carried out to certain dynamic compensation, and the synchronous jacking system of employing mainly consists of equipment connections such as master control computer, sub-pump, substation and position sensors.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 display and the integrated box-shaped system of computer system.Adopt multiple spot digital control scheme, can guarantee the accuracy of jacking; To force value, lifting height, the parameter such as load is poor, adopts electronic system monitoring, has guaranteed maltilevel security protection; Lcd screen can show integral construction situation, only needs a people to carry out Engineering Control at central controlling chamber, has guaranteed the convenience of construction.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the present invention and easily learn wherein many advantages of following, 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 is used 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.
The specific embodiment
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 of synchronization of jacking up plant equipment (computer hydraulic tuning system), only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is display and the integrated box-shaped system of computer system;
(2), sub-pump 2 (pilot controller) is at abutment and pier location, play hydraulic pump function, and collect in each position, operating point the computer hydraulic tuning system 1 that job information is transferred to; 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) contains the first substation 3, the second substation 4;
The first substation 3, the second substation 4 connexon pumps 2, be mounted on can not the position of direct operation on, play conduction hydraulic pressure, and by transfer of data such as elevation and hydraulic pressure values to sub-pump, final data is collected master 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% in;
(5), hydraulic jack; After jacking, adopt double security device (closing hydraulic valve+locking nut mode), the bridge collapse accident that prevention can not be envisioned.
A bridge deformation dynamic synchronization jacking compensation method, contains following steps;
Step 1, preparatory items
Before step (1), jacking, on bridge floor, arrange some absolute altitudes and center line observation point, accurately measure the absolute altitude value of each point, and make a record, obtaining on the basis of design approval, 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, master control computer, sub-pump, substation, guarantee 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 the spacing value value of establishing size meets the requirements;
D, the facility complete removal whether that affects jacking;
Whether all e, agent structure were removed with being connected of other structure.
Step (3), jack-up system debugging
The main contents of debugging comprise:
Step a, hydraulic checking system; Oil cylinder is installed firmly correct; Pumping plant is connected necessary correct, reliable with the oil pipe between oil cylinder; Fuel tank liquid level, should reach specified altitude; Standby 2 barrels of hydraulic oil, oiling is oil machine after filtration; Whether hydraulic system operation is normal, and oil circuit has or not obstruction or leaks; Whether hydraulic oil needs by 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 be up to specification: control device wiring, installation must be correct; Should guarantee that data communication circuit is correct; Whether the operation of CLS control system is normal, and whether hydraulic system is sensitive to control instruction reaction; Each sensing system, guarantees that signal correctly transmits; System can lifting freely; The working condition of displacement transducer; Whether whether the working condition of various valves is normal, need to change;
Step c, monitoring system inspection: dial gage is installed firm, correct, does not omit; Signal transmission is errorless;
The setting of steps d, initial value with read: system original upload is jointly determined and reports commander in chief together with Structural Engineer by hydraulic engineer, finally by Systems Operator, inputting CLS; Read control system power sensor 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 determining a little;
On the bridge floor at each bridge pier place, get 3 monitoring points, 2 a bit, on center line, are respectively used to monitor absolute altitude and the midline position variation of jacking process Bridge in bridge floor both sides, and delivering for a check a little after finishing as jacking.Before jacking, should record relief initial value, so that jacking is checked after completing.
Whether step (5), inspection bridge there is connection phenomenon;
Before jacking, to carry out double check to each position of bridge, check and whether have connection phenomenon.To meet, there is Free up Memory.
Step (6), weigh;
Pressurize test procedure: it is errorless that oil cylinder, oil pipe, pumping plant console, monitor etc. install inspection.
The step of weighing: for guaranteeing synchronously carrying out of jacking process, should measure the actual loading at each Jacking point place before jacking; While weighing, according to calculating jacking load, adopt the mode loading step by step to carry out.Before jack jacking, should carry out pre-jacking, guarantee that the jack girder place of connecing is stable, first top power is 10t, and the displacement of first top is less than 2mm.
Step 2, pre-jacking;
Step 1., for guaranteeing that the synchronous evenly jacking of superstructure carries out smoothly, in hydraulic jack and superstructure bottom surface, add rubber sheet gasket.
Step 2., before jacking, at the bottom of guaranteeing girder and jack contact stabilization and holding out against beam, first top power is 10t, the displacement of first top is less than 2mm.
Step 3., in whole work progress, need on master control computer monitor monitoring in real time.
After step 4., the height that shows on the actual top lifting height of bridge and computer confirms, solid mechanical jack, then cancels hydraulic jack.
Step 5., when abutment sedimentation reaches 5mm, girder jacking 6mm, bearing cushioning 4mm steel plate, beam then falls.
Step 3, jacking;
Step 1., according to monitored results and Party A, agree to after, when the adjacent pier stud maximum settlement of each girder surpasses 5.0mm, subway stops construction, starts Lifting Equipment and starts jacking.In jacking process, need to carry out main Beam Elevation Real-Time Monitoring (certainty of measurement 0.1mm).
Step 2., jacking step determines according to each pier sedimentation distribution situation of bridge.After jacking puts in place, pin mechanic jacks, then let out hydraulic jack.
Step 3., jacking process, need under Party A and expert's supervision on the scene, implement.In jacking process, the data such as jacking position, temperature, top lifting height and load are added up, and fill in data statistic.
Step 4., to jacking data after Party A and expert study and judge, implement next step jacking.
Dynamically the step of jacking is:
Step 1., installation position displacement sensor;
Step 2., hydraulic jack is installed;
Step 3., mounting end controller and hydraulic jack, connect Level monitoring sensor;
Step 4., sub-pump is installed;
Step 5., master control computer and connexon pump be installed;
Step 6., start master 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 march into the arena, and first bridge construction is carried out to field verification, and if different design, should contact with design.
Step 2., before jacking, reply bridge outward appearance checks, when finding to detect and compare with front assessment, when bridge has newly-increased disease or newly-increased damage, should be 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., prominent for guaranteeing that sedimentation does not occur bridge, during constructing metro tunnel, should take measures to make bridge settlement speed to be less than 2mm/d.In the time can not meeting this and require, should notify in time support top designing unit.
Step 5., face is during apart from bridge foundation 2 Bei Dong footpath, and bridge construction should be carried out real-time settlement monitoring.Now, support top measure should be debugged complete, in good condition, can start at any time jacking.
Step 6., guarantee to manage jack and do not want eccentric setting, cause unstability (Over Tuning).
After step 7., bridge jacking finishes, strong point hydraulic jack is locknut locking nut fixedly, then hydraulic jack.
As mentioned above, embodiments of the invention are explained, but as long as not departing from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation is also all included in protection scope of the present invention.
Claims (4)
1. a bridge deformation dynamic synchronization jacking compensation method, is characterized in that containing following steps; Utilize master 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 parameter such as load is poor; the monitoring of employing electronic system, has guaranteed maltilevel security protection, and lcd screen shows integral construction situation.
2. a kind of bridge deformation dynamic synchronization jacking compensation method according to claim 1, is characterized in that containing following steps;
Step 1, preparatory items;
Before step (1), jacking, on bridge floor, arrange some absolute altitudes and center line observation point, accurately measure the absolute altitude value of each point, and make a record, obtaining on the basis of design approval, 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, master control computer, sub-pump, substation, guarantee 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 the spacing value value of establishing size meets the requirements;
D, the facility complete removal whether that affects jacking;
Whether all e, agent structure were removed with being connected of other structure;
Step (3), jack-up system debugging
The main contents of debugging comprise:
Step a, hydraulic checking system; Oil cylinder is installed firmly correct; Pumping plant is connected necessary correct, reliable with the oil pipe between oil cylinder; Fuel tank liquid level, should reach specified altitude; Standby 2 barrels of hydraulic oil, oiling is oil machine after filtration; Whether hydraulic system operation is normal, and oil circuit has or not obstruction or leaks; Whether hydraulic oil needs by 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 be up to specification: control device wiring, installation must be correct; Should guarantee that data communication circuit is correct; Whether the operation of CLS control system is normal, and whether hydraulic system is sensitive to control instruction reaction; Each sensing system, guarantees that signal correctly transmits; System can lifting freely; The working condition of displacement transducer; Whether whether the working condition of various valves is normal, need to change;
Step c, monitoring system inspection: dial gage is installed firm, correct, does not omit; Signal transmission is errorless;
The setting of steps d, initial value with read: system original upload is jointly determined and reports commander in chief together with Structural Engineer by hydraulic engineer, finally by Systems Operator, inputting CLS; Read control system power sensor 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 determining a little;
On the bridge floor at each bridge pier place, get 3 monitoring points, 2 a bit, on center line, are respectively used to monitor absolute altitude and the midline position variation of jacking process Bridge in bridge floor both sides, and delivering for a check a little after finishing as jacking; Before jacking, should record relief initial value, so that jacking is checked after completing;
Whether step (5), inspection bridge there is connection phenomenon;
Before jacking, to carry out double check to each position of bridge, check and whether have connection phenomenon; To meet, there is Free up Memory;
Step (6), weigh;
Pressurize test procedure: it is errorless that oil cylinder, oil pipe, pumping plant console, monitor etc. install inspection;
The step of weighing: for guaranteeing synchronously carrying out of jacking process, should measure the actual loading at each Jacking point place before jacking; While weighing, according to calculating jacking load, adopt the mode loading step by step to carry out; Before jack jacking, should carry out pre-jacking, guarantee that the jack girder place of connecing is stable, first top power is 10t, and the displacement of first top is less than 2mm;
Step 2, pre-jacking;
Step 1., for guaranteeing that the synchronous evenly jacking of superstructure carries out smoothly, in hydraulic jack and superstructure bottom surface, add rubber sheet gasket;
Step 2., before jacking, at the bottom of guaranteeing girder and jack contact stabilization and holding out against beam, first top power is 10t, the displacement of first top is less than 2mm;
Step 3., in whole work progress, need on master control computer monitor monitoring in real time;
After step 4., the height that shows on the actual top lifting height of bridge and computer confirms, solid mechanical jack, then cancels hydraulic jack;
Step 5., when abutment sedimentation reaches 5mm, girder jacking 6mm, bearing cushioning 4mm steel plate, beam then falls;
Step 3, jacking;
Step 1., according to monitored results and Party A, agree to after, when the adjacent pier stud maximum settlement of each girder surpasses 5.0mm, subway stops construction, starts Lifting Equipment and starts jacking; In jacking process, need to carry out main Beam Elevation Real-Time Monitoring (certainty of measurement 0.1mm);
Step 2., jacking step determines according to each pier sedimentation distribution situation of bridge; After jacking puts in place, pin mechanic jacks, then let out hydraulic jack;
Step 3., jacking process, need under Party A and expert's supervision on the scene, implement; In jacking process, the data such as jacking position, temperature, top lifting height and load are added up, and fill in data statistic;
Step 4., to jacking data after Party A and expert study and judge, implement next step jacking;
Dynamically the step of jacking is:
Step 1., installation position displacement sensor;
Step 2., hydraulic jack is installed;
Step 3., mounting end controller and hydraulic jack, connect Level monitoring sensor;
Step 4., sub-pump is installed;
Step 5., master control computer and connexon pump be installed;
Step 6., start master 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.
3. a kind of bridge deformation dynamic synchronization jacking compensation method according to claim 2, is characterized in that containing jacking process steps:
Step is 1., construction is when march into the arena, and first bridge construction is carried out to field verification, and if different design, should contact with design;
Step 2., before jacking, reply bridge outward appearance checks, when finding to detect and compare with front assessment, when bridge has newly-increased disease or newly-increased damage, should be 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., prominent for guaranteeing that sedimentation does not occur bridge, during constructing metro tunnel, should take measures to make bridge settlement speed to be less than 2mm/d; In the time can not meeting this and require, should notify in time support top designing unit;
Step 5., face is during apart from bridge foundation 2 Bei Dong footpath, and bridge construction should be carried out real-time settlement monitoring; Now, support top measure should be debugged complete, in good condition, can start at any time jacking;
Step 6., guarantee to manage jack and do not want eccentric setting, cause unstability (Over Tuning);
After step 7., bridge jacking finishes, strong point hydraulic jack is locknut locking nut fixedly, then hydraulic jack.
4. a bridge deformation dynamic synchronization jacking compensation arrangement, is characterized in that comprising:
(1), computer hydraulic tuning system;
The important component part of synchronization of jacking up plant equipment (computer hydraulic tuning system), only needs operating personnel to input top lifting height, and computer system automatically performs order and controls oil pressure, is display and the integrated box-shaped system of computer system;
(2), sub-pump (pilot controller) is at abutment and pier location, play hydraulic pump function, and collect in each position, operating point the computer hydraulic tuning system function that job information is transferred to; 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) contains the first substation, the second substation is located away from sub-pump, be mounted on can not the position of direct operation on, play conduction hydraulic pressure, and the transfer of data such as elevation and hydraulic pressure value are arrived to sub-pump, final data is collected master 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% in;
(5), hydraulic jack; After jacking, adopt double security device (closing hydraulic valve+locking nut mode), the bridge collapse accident that prevention can not be envisioned.
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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Cited By (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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| CN104005342B (en) | 2016-04-06 |
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