CN108193604A - Ballasting method of weighing during box beam T structures balance swivel - Google Patents
Ballasting method of weighing during box beam T structures balance swivel Download PDFInfo
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- CN108193604A CN108193604A CN201711216491.3A CN201711216491A CN108193604A CN 108193604 A CN108193604 A CN 108193604A CN 201711216491 A CN201711216491 A CN 201711216491A CN 108193604 A CN108193604 A CN 108193604A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
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Abstract
Ballasting method of weighing during being turned the invention discloses box beam T structures balance, including：Step 1: jacking apparatus, displacement monitoring equipment and pressure sensor are placed between the upper cushion cap of box beam T structures side and lower cushion cap；Step 2: jacking box beam to preset value upwards using jacking apparatus, stop jacking, record data；Step 3: repeating step 1 and step 2 in box beam T structures opposite side, after jacking stops, data are recorded；Step 4: according to the data that step 2 and step 3 respectively obtain, the weight on box beam T structures both sides is calculated respectively, and is compared；Step 5: the weight on comparison box beam T structures both sides, carries out counterweight measure；Step 6: it repeats Step 1: two, three, four and step 5, balance until box beam T structures both sides are realized.Ballasting method step of weighing during the box beam T structures balance swivel of the present invention is simple and clear, easily operated, and can carry out correct amount, then carries out counterweight according to weighing results, realizes the balance during swivel.
Description
Technical field
The present invention relates to weighing during box beam turning technology field more particularly to a kind of box beam T structures balance swivel to match
Weighing method.
Background technology
Bridge Rotation Construction Technique refers to bridge structure after non-design axial location makes (cast or splicing) forming, passes through
A kind of swivel construction method in place.Since construction by swing is complexity, technical strong working at height and operation at sea change
For the land operation on bank, not only construction safety, quality can use, and in navigable river or the frequent cross-line viaduct of vehicle
Traffic, uninterrupted navigation can not be interfered in construction, the damage to environment is small, has good technical economic benefit, so existing
Bridge construction in be commonly used.In recent years, although plane swivel construction bridges case is numerous both at home and abroad, but still swivel is applied
Work process there are still due to volume it is excessively huge caused by swivel T structures weigh counterweight it is difficult the problem of so that swivel process warp
It often will appear unbalanced problem.
Invention content
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
Ballasting method of weighing during being turned it is a still further object of the present invention to provide a kind of box beam T structures balance, including：
Step 1: jacking apparatus, the prison for jacking box beam are placed between the upper cushion cap of box beam T structures side and lower cushion cap
The displacement monitoring equipment of displacement；And the placement force sensor at the top of jacking apparatus；
Step 2: being jacked box beam to preset value upwards using jacking apparatus, stop jacking, record the jacking of jacking apparatus
The shift value of power, the pressure value of pressure sensor and displacement monitoring equipment；
Step 3: repeating step 1 and step 2 in box beam T structures opposite side, after jacking stops, the top of jacking apparatus is recorded
The shift value of lift, the pressure value of pressure sensor and displacement monitoring equipment；
Step 4: the top lift, pressure value and the shift value that are respectively obtained according to step 2 and step 3, calculate respectively
The weight on box beam T structures both sides, and compare；
Step 5: the weight on comparison box beam T structures both sides, carries out counterweight measure；
Step 6: it repeats Step 1: two, three, four and step 5, balance until box beam T structures both sides are realized.
Preferably, the ballasting method of weighing during described box beam T structures balance swivel, the counterweight in the step 5
Measure specifically includes：Weight is placed in the side of box beam T structure lighter in weight, to eliminate unbalanced moments；And in box beam T structure weights
It encloses equipped with a circle spike the upper cushion cap bottom for measuring heavier side；
Preferably, the ballasting method of weighing during box beam T structures balance swivel, counterweight measure implementation process
In, calculate the friction moment M of flexural pivotfAnd unbalanced moments M caused by box beam center of gravity and flexural pivot off-centringG, and compare ball
The friction moment M of hingefWith unbalanced moments MGSize；
If the friction moment M of flexural pivotfLess than unbalanced moments MG, then box beam is around flexural pivot generation rigidity rotation, until spike rises
To support effect, balance is realized；
If the friction moment M of flexural pivotfMore than unbalanced moments MG, then box beam rigidity rotation does not occur around flexural pivot, that is, realize flat
Weighing apparatus；
Wherein, the flexural pivot includes the top half being movably hinged each other and lower half portion, top half, the lower half of flexural pivot
Part is individually fixed in the upper cushion cap；
Preferably, the ballasting method of weighing during box beam T structures balance swivel, the spike include two and erect
Straight steel pipe and the horizontal lateral steel plate being set in outside two steel pipes.
Preferably, the ballasting method of weighing during box beam T structures balance swivel, the jacking apparatus are very heavy
Top；
The displacement monitoring equipment is displacement meter.
Preferably, the ballasting method of weighing during box beam T structures balance swivel, the friction moment M of flexural pivotf's
Calculation formula is as follows：
Wherein, MfThe friction moment of-flexural pivot；R-flexural pivot the radius of a ball；The quality of the box beam T structures of N-to be turned；α-ball
Cut with scissors the half of central angle；μ0- friction coefficient is 0.1.
Preferably, the ballasting method of weighing during box beam T structures balance swivel, unbalanced moments MGCalculating
Formula is as follows：
MG=N × e；
MG- unbalanced moments；
The budget peak excursion displacement of e-between box beam center of gravity and flexural pivot center；
The quality of the box beam T structures of N-to be turned.
Preferably, the ballasting method of weighing during box beam T structures balance swivel, the weight are water tank,
Inside hold water.
Preferably, the ballasting method of weighing during box beam T structures balance swivel, the flexural pivot include living each other
Dynamic hinged top half and lower half portion, the top half bottom of flexural pivot is along the vertically arranged annular projection of its circumferencial direction；
Along the vertically arranged annular recess of its circumferencial direction at the top of the lower half portion of flexural pivot, the annular projection is rotatably fastened on ring-type
In groove, so as to fulfill the top half of rotation flexural pivot and the rotation connection of lower half portion.
The present invention includes at least following advantageous effect：Weighing with double recipe during the box beam T structures balance swivel of the present invention
Method step is simple and clear, easily operated, and can carry out correct amount, then carries out counterweight according to weighing results, realizes and turns
Balance during body is laid a good foundation for subsequent smooth swivel.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the structure diagram that the box beam balance swivel T structures of the present invention are weighed；
Connection diagrams of the Fig. 2 between upper cushion cap and lower cushion cap.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other element or combinations.
In the description of the present invention, term " transverse direction ", " longitudinal direction ", " on ", " under ", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " top ", " bottom ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position
Relationship is put, is for only for ease of and is described of the invention and simplify description, is not that device or the element of instruction or hint meaning are necessary
With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
As shown in Figs. 1-2, the present invention provides the ballasting method of weighing during a kind of box beam T structures balance swivel, including：
Step 1: the jacking dress for jacking box beam 1 is placed between the upper cushion cap 2 of 1 side of box beam T structures and lower cushion cap 3
Put the displacement monitoring equipment 6 of 4, monitoring displacement；And in 4 top placement force sensor 5 of jacking apparatus；
Step 2: by box beam 1, jacking to preset value, stops jacking, records jacking apparatus 4 upwards using jacking apparatus 4
The shift value of top lift, the pressure value of pressure sensor 5 and displacement monitoring equipment 6；
Step 3: repeating step 1 and step 2 in 1 opposite side of box beam T structures, after jacking stops, the top of jacking apparatus is recorded
The shift value of lift, the pressure value of pressure sensor and displacement monitoring equipment；
Step 4: the top lift, pressure value and the shift value that are respectively obtained according to step 2 and step 3, calculate respectively
The weight on 1 both sides of box beam T structures, and compare；
Step 5: the weight on 1 both sides of comparison box beam T structures, carries out counterweight measure；Wherein, the counterweight in the step 5 is arranged
It applies and specifically includes：Weight is placed in the side of box beam T structure lighter in weight, to eliminate unbalanced moments；And in box beam T structure weight
It encloses equipped with a circle spike the upper cushion cap bottom of heavier side；
Step 6: it repeats Step 1: two, three, four and step 5, balance until box beam T structures both sides are realized.
The ballasting method of weighing during box beam T structures balance swivel described in another embodiment, counterweight measure are implemented
In the process, the friction moment M of flexural pivot is calculatedfAnd unbalanced moments M caused by box beam center of gravity and flexural pivot off-centringG, and compare
Compared with the friction moment M of flexural pivotfWith unbalanced moments MGSize；
If the friction moment M of flexural pivotfLess than unbalanced moments MG, then box beam is around flexural pivot generation rigidity rotation, until spike rises
To support effect, balance is realized；
If the friction moment M of flexural pivotfMore than unbalanced moments MG, then box beam rigidity rotation does not occur around flexural pivot, that is, realize flat
Weighing apparatus；
Wherein, the flexural pivot includes the top half being movably hinged each other and lower half portion, top half, the lower half of flexural pivot
Part is individually fixed in the upper cushion cap；
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, and the spike includes
Two vertical steel pipes and the horizontal lateral steel plate being set in outside two steel pipes.
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, the jacking apparatus
For jack；
The displacement monitoring equipment is displacement meter.
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, the frictional resistance of flexural pivot
Square MfCalculation formula it is as follows：
Wherein, MfThe friction moment of-flexural pivot；R-flexural pivot the radius of a ball；The quality of the box beam T structures of N-to be turned；α-ball
Cut with scissors the half of central angle；μ0- friction coefficient is 0.1.
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, unbalanced moments MG
Calculation formula it is as follows：
MG=N × e；
MG- unbalanced moments；
The budget peak excursion displacement of e-between box beam center of gravity and flexural pivot center；
The quality of the box beam T structures of N-to be turned.
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, and the weight is water
Case inside holds water.
Another embodiment, the box beam T structures balance the ballasting method of weighing during swivel, and the flexural pivot includes
The top half being movably hinged each other and lower half portion, the top half bottom of flexural pivot are cyclic annular along its circumferencial direction vertically arranged one
Protrusion；Along the vertically arranged annular recess of its circumferencial direction at the top of the lower half portion of flexural pivot, rotatably card is set the annular projection
In annular recess, so as to fulfill the top half of rotation flexural pivot and the rotation connection of lower half portion.
Wherein, the specific steps are：Jack is placed in box beam side, jack is placed between lower cushion cap, on jack
Pressure sensor is placed in face, places displacement meter between upper lower cushion cap, and jack is given to refuel, jacks box beam upwards, treat jack oil meter,
Pressure value and positioned at value variation it is very big when stop jacking.Then similarly operated in opposite side again, according to jack oil meter,
Pressure value and the linear change positioned at value calculate T structures both sides weight, carry out counterweight；
Then the friction moment M of flexural pivot is calculatedfAnd unbalanced moments caused by box beam center of gravity and flexural pivot off-centring
MG；It is using ball strand as shaft that we, which turn, and the tractive force according to needed for stress calculates frictional force and rotation first could rotate；
Safety swivel, box beam must balance, according to ball twist axis can not possibly absolute upright, so to be calculated according to off-centring uneven
Torque ensures swivel safety；
Again, compare the friction moment M of flexural pivotfWith unbalanced moments MGSize, if the two is inconsistent, spike is set,
The offside of box beam bias center of gravity places water tank, jack.When rotating the friction moment of flexural pivot less than rotor unbalanced moments, beam
Body occur around flexural pivot rigidity rotation, until spike participate in work, at this time the balance of system by friction moment, unbalanced moments and
Spike keeps the torque of the centre of sphere.
When rotating the friction moment of flexural pivot more than rotor unbalanced moments, the rigidity rotation around flexural pivot does not occur for beam body,
The balance of system is kept by friction moment and unbalanced moments at this time.
When rotating the friction moment of flexural pivot less than rotor unbalanced moments, the rigidity rotation around flexural pivot occurs for beam body, directly
Work is participated in spike, the balance of system keeps the torque of the centre of sphere by friction moment, unbalanced moments and spike at this time.
As shown in Figure 1, when friction moment is less than unbalanced moments, it is assumed that unbalanced moments is biased to right side (i.e. F2 sides), then
Have：
Force value when right side jacks：F2S；Force value when right side is landed：F2L；Right side jacks the arm of force：L2。
When right side rises top：F2SL2=MG+Mf
During the caving of right side：F2LL2+Mf=MG
Calculating then has：
When friction moment is more than unbalanced moments, rotates the friction moment of flexural pivot more than rotor unbalanced moments, beam
Rigidity rotation around flexural pivot does not occur for body, and the balance of system is kept by friction moment and unbalanced moments at this time.
Force value when left side jacks：F1；Left side jacks the arm of force：L1。
Force value when right side jacks：F2；Right side jacks the arm of force：L2。
Left side F1Moment of flexure balances during jacking：F1L1=Mf-MG
Right side F2Moment of flexure balances during jacking：F2L2=MG+Mf
Calculating then has：
Theoretically, swing system by vertical force be balance, but due to both sides concreting non complete symmetry and
The influence (such as wind load) of construction loads, rotor system can generate unbalanced moments.With the following method, to the imbalance of generation
Torque is controlled.
(1) it using the effect of spike, takes appropriate measures, eliminates unbalanced moments, it is ensured that construction safety.Single spike
Maximum weighted 2000kN can offset maximal unbalanced force square 6100kNm；
(2) offside of box beam bias center of gravity places water tank, and toward water filling in water tank, eliminates unbalanced moments.It can offset most
Large unbalance torque about 30000kNm；(2 30m3Water tank)
The maximal unbalanced force square 25000kNm offset is needed, counterweight water tank is sized to meet the requirements.
(3) beam-ends counter-force rack position jack of weighing overcomes unbalanced moments.The distance of jack and rotary centerline
About 40m respectively arranges two 100t jack, can overcome maximum obstruction torque 80000kNm；
It weighs using 4 100t jack, maximal unbalanced force square and the obstruction torque of friction moment synthesis are when weighing
57000kNm is less than surmountable maximum obstruction torque, weighs and disclosure satisfy that requirement with jack.
(4) jack overcomes unbalanced moments (fine-adjustment jack)
Jack is set in lower rotary table, after the completion of swivel, the influence of unbalanced moments is overcome by jack, it is accurate to adjust
Turn over body system position.The distance of jack and rotary centerline is 3.35m, arranges four 600t jack, control is most very much not
Trimming moment 40000kNm.
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited
In specific details and legend shown and described herein.
Claims (9)
1. a kind of ballasting method of weighing during box beam T structures balance swivel, which is characterized in that including：
Step 1: jacking apparatus, the monitoring position for jacking box beam are placed between the upper cushion cap of box beam T structures side and lower cushion cap
The displacement monitoring equipment of shifting；And the placement force sensor at the top of jacking apparatus；
Step 2: jacking box beam upwards using jacking apparatus to preset value, stop jacking, record jacking apparatus top lift,
The pressure value of pressure sensor and the shift value of displacement monitoring equipment；
Step 3: repeat step 1 and step 2 in box beam T structures opposite side, after jacking stops, recording jacking apparatus top lift,
The pressure value of pressure sensor and the shift value of displacement monitoring equipment；
Step 4: the top lift, pressure value and the shift value that are respectively obtained according to step 2 and step 3, calculate box beam respectively
The weight on T structures both sides, and compare；
Step 5: the weight on comparison box beam T structures both sides, carries out counterweight measure；
Step 6: it repeats Step 1: two, three, four and step 5, balance until box beam T structures both sides are realized.
2. the ballasting method of weighing during box beam T structures balance swivel as described in claim 1, which is characterized in that the step
Counterweight measure in rapid five specifically includes：Weight is placed in the side of box beam T structure lighter in weight, to eliminate unbalanced moments；With
And it is enclosed in the upper cushion cap bottom of the side of box beam T structure heavier-weights equipped with a circle spike.
3. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 2, which is characterized in that counterweight is arranged
It applies in implementation process, calculates the friction moment M of flexural pivotfAnd unbalanced moments caused by box beam center of gravity and flexural pivot off-centring
MG, and compare the friction moment M of flexural pivotfWith unbalanced moments MGSize；
If the friction moment M of flexural pivotfLess than unbalanced moments MG, then box beam is around flexural pivot generation rigidity rotation, until spike plays branch
Effect is supportted, realizes balance；
If the friction moment M of flexural pivotfMore than unbalanced moments MG, then box beam rigidity rotation does not occur around flexural pivot, that is, realize balance；
Wherein, the flexural pivot includes the top half being movably hinged each other and lower half portion, the top half of flexural pivot, lower half portion
It is individually fixed in the upper cushion cap.
4. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 2, which is characterized in that the support
Foot includes two vertical steel pipes and the horizontal lateral steel plate being set in outside two steel pipes.
5. the ballasting method of weighing during box beam T structures balance swivel as described in claim 1, which is characterized in that
The jacking apparatus is jack；
The displacement monitoring equipment is displacement meter.
6. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 3, which is characterized in that the ball
The friction moment M of hingefCalculation formula it is as follows：
Wherein, MfThe friction moment of-flexural pivot；R-flexural pivot the radius of a ball；The quality of the box beam T structures of N-to be turned；α-flexural pivot center
The half at angle；μ0- friction coefficient is 0.1.
7. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 3, which is characterized in that uneven
Torque MGCalculation formula it is as follows：
MG=N × e；
MG- unbalanced moments；
The budget peak excursion displacement of e-between box beam center of gravity and flexural pivot center；
The quality of the box beam T structures of N-to be turned.
8. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 2, which is characterized in that described heavy
Object is water tank, inside holds water.
9. the ballasting method of weighing during box beam T structures balance swivel as claimed in claim 3, which is characterized in that the ball
Hinge includes the top half being movably hinged each other and lower half portion, the top half bottom of flexural pivot are vertically arranged along its circumferencial direction
One annular projection；Along the vertically arranged annular recess of its circumferencial direction at the top of the lower half portion of flexural pivot, the annular projection can turn
It is dynamic to be fastened in annular recess, so as to fulfill the top half of rotation flexural pivot and the rotation connection of lower half portion.
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Cited By (14)
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| CN108660945A (en) * | 2018-07-06 | 2018-10-16 | 重庆三峡学院 | A kind of Bridge Rotation Construction Technique booster type lifting rotor system |
| CN108982013A (en) * | 2018-08-16 | 2018-12-11 | 中铁大桥科学研究院有限公司 | For judging device, method and the calculation method of bridge rotation critical balance |
| CN109577210A (en) * | 2018-12-24 | 2019-04-05 | 中铁九局集团第二工程有限公司 | Swivel bridges assist weighing system and weighing method |
| CN110144830A (en) * | 2019-04-28 | 2019-08-20 | 中国铁路设计集团有限公司 | A kind of bridge pier top body rotation construction method |
| CN110331671A (en) * | 2019-07-31 | 2019-10-15 | 中交隧道工程局有限公司 | A kind of swivel bridges rotation swivel construction method without weighing balance |
| CN110761187A (en) * | 2019-09-19 | 2020-02-07 | 中铁十局集团第一工程有限公司 | Active control method for bridge horizontal rotation construction |
| CN111177964A (en) * | 2019-12-25 | 2020-05-19 | 中国航空工业集团公司西安飞机设计研究所 | Balance adjusting method and equipment for jacking state of airplane |
| CN111593772A (en) * | 2020-05-12 | 2020-08-28 | 中铁上海设计院集团有限公司 | Swivel bridge weighing method based on pile foundation stress measurement |
| CN112523094A (en) * | 2020-11-28 | 2021-03-19 | 肃木丁建筑设计咨询(深圳)有限公司 | Swivel system of cross-railway bridge |
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| CN115369778A (en) * | 2022-07-21 | 2022-11-22 | 中铁一局集团(广州)建设工程有限公司 | Construction method of steel cross beam rotating body structure |
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| CN108660945A (en) * | 2018-07-06 | 2018-10-16 | 重庆三峡学院 | A kind of Bridge Rotation Construction Technique booster type lifting rotor system |
| CN108982013B (en) * | 2018-08-16 | 2020-05-05 | 中铁大桥科学研究院有限公司 | Device and method for judging bridge rotation critical balance and calculating method |
| CN108982013A (en) * | 2018-08-16 | 2018-12-11 | 中铁大桥科学研究院有限公司 | For judging device, method and the calculation method of bridge rotation critical balance |
| CN109577210A (en) * | 2018-12-24 | 2019-04-05 | 中铁九局集团第二工程有限公司 | Swivel bridges assist weighing system and weighing method |
| CN110144830A (en) * | 2019-04-28 | 2019-08-20 | 中国铁路设计集团有限公司 | A kind of bridge pier top body rotation construction method |
| CN110144830B (en) * | 2019-04-28 | 2020-10-16 | 中国铁路设计集团有限公司 | Bridge pier top rotation construction method |
| CN110331671A (en) * | 2019-07-31 | 2019-10-15 | 中交隧道工程局有限公司 | A kind of swivel bridges rotation swivel construction method without weighing balance |
| CN110761187A (en) * | 2019-09-19 | 2020-02-07 | 中铁十局集团第一工程有限公司 | Active control method for bridge horizontal rotation construction |
| CN110761187B (en) * | 2019-09-19 | 2021-08-13 | 济南北环铁路有限公司 | Active control method for bridge horizontal rotation construction |
| CN111177964A (en) * | 2019-12-25 | 2020-05-19 | 中国航空工业集团公司西安飞机设计研究所 | Balance adjusting method and equipment for jacking state of airplane |
| CN111177964B (en) * | 2019-12-25 | 2023-04-14 | 中国航空工业集团公司西安飞机设计研究所 | Balance adjusting method and equipment for jacking state of airplane |
| CN111593772A (en) * | 2020-05-12 | 2020-08-28 | 中铁上海设计院集团有限公司 | Swivel bridge weighing method based on pile foundation stress measurement |
| CN111593772B (en) * | 2020-05-12 | 2021-06-04 | 中铁上海设计院集团有限公司 | Swivel bridge weighing method based on pile foundation stress measurement |
| CN112609596A (en) * | 2020-11-25 | 2021-04-06 | 中铁七局集团武汉工程有限公司 | Super-tonnage wide-width multi-partition-plate continuous beam weighing and balancing method |
| CN112523094A (en) * | 2020-11-28 | 2021-03-19 | 肃木丁建筑设计咨询(深圳)有限公司 | Swivel system of cross-railway bridge |
| CN113848016A (en) * | 2021-09-14 | 2021-12-28 | 武汉重工铸锻有限责任公司 | Flywheel static balance detection and weight removal method and flywheel static balance detection device |
| CN113863165A (en) * | 2021-09-17 | 2021-12-31 | 中铁七局集团有限公司 | Large-section wide-width rigid frame bridge swivel weighing system and method |
| CN115369778A (en) * | 2022-07-21 | 2022-11-22 | 中铁一局集团(广州)建设工程有限公司 | Construction method of steel cross beam rotating body structure |
| CN117387984A (en) * | 2023-12-11 | 2024-01-12 | 武汉武铁工程项目管理有限公司 | Swivel bridge weighing test system and method |
| CN117387984B (en) * | 2023-12-11 | 2024-03-22 | 武汉武铁工程项目管理有限公司 | Swivel bridge weighing test system and method |
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