CN104330212B - A kind of rotator construction Weighing method of flat hinge - Google Patents
A kind of rotator construction Weighing method of flat hinge Download PDFInfo
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- CN104330212B CN104330212B CN201410540161.XA CN201410540161A CN104330212B CN 104330212 B CN104330212 B CN 104330212B CN 201410540161 A CN201410540161 A CN 201410540161A CN 104330212 B CN104330212 B CN 104330212B
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Abstract
The invention discloses a kind of rotator construction Weighing method of flat hinge.In the method, including：Left and right ends between the upper and lower rotating disk of flat hinge is set set a dial gauge respectively；The decrement that the upper flat hinge two ends of flat hinge are obtained by the dial gauge measurement is poor, and according to the counter-force moment of flexure at the flat hinge of decrement difference calculating；According to the counter-force moment of flexure at flat hinge, the eccentricity value for obtaining rotating body beam section is calculated.By using the rotator construction Weighing method of flat hinge provided by the present invention, it is possible to achieve flat hinge rotator construction is weighed.
Description
Technical field
The present invention relates to science of bridge building technology, more particularly to a kind of rotator construction Weighing method of flat hinge.
Background technology
Across when runing busy railway, highway progress bridge construction, erection by swing is constructed due to the fortune to existing line
Battalion's influence interference is minimum, therefore has obtained increasingly being widely applied.The key of erection by swing construction is structure in work progress
It is stable.Error is poured due to being likely to occur in work progress, actual center gravity may have differences with design gravity, therefore in order to
Ensure bridge rotate before the safety torn open during frame and swivel process be smoothed out, turn it is previous as must carry out to turning
The operation that body beam is weighed, the main purpose of the weighing operation is the position of centre of gravity that measurement rotates beam body, so as to carry out when necessary
Counterweight with ensure turn beam section center of gravity position deviation in safe range.
At present, the turning hinge form of rotating body beam mainly has two kinds of ball pivot peace hinge.The contact surface of the upper lower rotary table of ball pivot is ball
Face form, and the upper lower rotary table of flat hinge is plane form.Because the contact surface of ball pivot is sphere form, and when sphere is slided
When, counter-force moment M z is fixed value at turning hinge, therefore weighing for ball pivot is easier.But, the weighing operation for equalling hinge is more multiple
Miscellaneous, reason is at turning hinge that counter-force moment M z is related to deadweight eccentric load distribution, in actual application environment, because template is inclined
The reason such as difference and cast, deadweight eccentric load distribution form is uncertain, so in current flat hinge rotator construction, it is right
Mostly qualitatively judge in the rotator construction weighing operation of flat hinge, and eccentricity value can not be accurately obtained to instruct flat hinge swivel to apply
Work and counterweight.But, for ball pivot, hinge is equalled with manufacture, handling ease, and the features such as being readily transported, install is adapted to big
The rotator construction of tonnage, therefore, finding a kind of can accurately carry out the method that flat hinge rotator construction weighs and have become this area
In a technical problem urgently to be resolved hurrily.
The content of the invention
In view of this, the present invention provides a kind of rotator construction Weighing method of flat hinge, so as to effectively realize to flat
Cut with scissors weighing for rotator construction.
What technical scheme was specifically realized in：
A kind of rotator construction Weighing method of flat hinge, this method includes：
A, the left and right ends between the upper and lower rotating disk of flat hinge is set set a dial gauge respectively；
B, the upper flat hinge two ends for obtaining by the dial gauge measurement flat hinge decrement it is poor and poor according to the decrement
Calculate the counter-force moment of flexure at flat hinge；
C, according to the counter-force moment of flexure at flat hinge, calculate the eccentricity value for obtaining rotating body beam section.
Preferably, the step B includes；
The reading of two dial gauges is read, the reading variable quantity of two dial gauges in two different time points is obtained；
The rotational angle that top rotary table occurs is calculated according to the reading variable quantity；
The rotational angle occurred according to the top rotary table is calculated to be deformed at the semicircle centre of form；
Deformed according at the semicircle centre of form, calculate the power at the semicircle centre of form；
According to the power at the above-mentioned semicircle centre of form, the counter-force moment of flexure at flat hinge is calculated.
Preferably, the calculation formula for the rotational angle that the top rotary table occurs is：
Δ θ=(Δ 1- Δs 2)/2/D
Wherein, Δ θ is the rotational angle that top rotary table occurs；Δ 1 and the reading variable quantity that Δ 2 is two dial gauges；D is upper
The radius of rotating disk.
Preferably, the calculation formula deformed at the semicircle centre of form is：
Δ h=4R/3 π * (Δ 1- Δs 2)/2/D
Wherein, Δ h is to be deformed at the semicircle centre of form, and R is the radius of upper flat hinge and lower flat hinge.
Preferably, the calculation formula of the power at the semicircle centre of form is：
Δ F=Δs h/H*E*A
Wherein, Δ F is the power at the semicircle centre of form, and H is the original thickness of slide plate, and E is that the modulus of elasticity of slide plate is, A is cunning
The gross area of piece.
Preferably, the calculation formula of the counter-force moment of flexure at the flat hinge is：
Mz=2* Δ F*4R/3 π
Wherein, Mz is the counter-force moment of flexure at the flat hinge.
Preferably, the step C includes：
Beam section eccentric bending moment is turned according to the counter-force calculation of Bending Moment at flat hinge；
The eccentricity value for obtaining rotating body beam section is calculated according to the swivel beam section eccentric bending moment.
Preferably, the calculation formula of the swivel beam section eccentric bending moment is：
Mg=Mz+ (F1-F2) L
Wherein, Mg is to turn beam section eccentric bending moment, F1 and two rigid support counter-forces that F2 is rotating body beam two ends, and F1>
F2；L is the side length of swivel section girder turning hinge center one.
Preferably, the calculation formula of the eccentricity value of the swivel beam section is：
E=Mg/N
Wherein, e is the eccentricity value of swivel beam section, and N is the weight of swivel beam section.
As above it is visible, by using the rotator construction Weighing method of the flat hinge in the present invention, it is possible to achieve to flat hinge swivel
That constructs weighs.Moreover, the rotator construction Weighing method of the flat hinge provided in the present invention is simple to operate, required instrument and equipment
Few, it is only necessary to which that dial gauge carries out displacement measurement, construction survey is simple.In addition, the rotator construction Weighing method institute for passing through above-mentioned flat hinge
The measurement accuracy obtained can also meet requirement of engineering completely.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in flat hinge rotator construction Weighing method schematic flow sheet；
The principle schematic that Fig. 2 weighs for the flat hinge rotator construction in the embodiment of the present invention.
Fig. 3 be the embodiment of the present invention one in flat hinge rotator construction Weighing method schematic flow sheet.
Embodiment
For the objects, technical solutions and advantages of the present invention are more clearly understood, develop simultaneously embodiment referring to the drawings, right
The present invention is further described.
A kind of rotator construction Weighing method of flat hinge is present embodiments provided, so as to effectively realize to flat hinge swivel
Beam section is weighed.
Fig. 1 be the embodiment of the present invention in flat hinge rotator construction Weighing method schematic flow sheet.As shown in figure 1, this
The rotator construction Weighing method of flat hinge in inventive embodiments mainly includes step as described below：
Step 11, the left and right ends between the upper and lower rotating disk of flat hinge is set set a dial gauge respectively.
The principle schematic that Fig. 2 weighs for the flat hinge rotator construction in the embodiment of the present invention.As shown in Fig. 2 flat hinge includes
Slide plate 4 between upper flat hinge 3, lower flat hinge 5 and upper and lower flat hinge.Upper and lower flat hinge is circular cross-section, and radius is R, and slide plate 4 is uniform
Be distributed between upper and lower flat hinge.Slide plate 4 is elastic compressible material, and modulus of elasticity is E, and the gross area is A.On upper flat hinge 3
Top rotary table 2 is provided with, radius is D, lower flat hinge 5 is embedded in lower rotary table 6.
Therefore, in order to carry out weighing operation to flat hinge, in this step, a left side that can be between top rotary table 2 and lower rotary table 6
Right two ends set a dial gauge 7 respectively.The decrement that the dial gauge 7 can be used for measuring two ends is poor.
Step 12, the decrement that the upper flat hinge two ends of flat hinge are obtained by the dial gauge measurement is poor, and according to measured
Decrement difference calculate counter-force moment M z at flat hinge.
In a particular embodiment of the present invention, because in above-mentioned steps 11, the left and right ends between upper and lower rotating disk are divided
Not there is provided a dial gauge, therefore.When top rotary table rotates, corresponding change will occur for the reading of dial gauge.So,
In this step, can use above-mentioned dial gauge measurement obtain flat hinge two ends decrement it is poor.For example, by reading two hundred
Divide the reading of table, so as to obtain the reading variation delta 1 and Δ 2 of two dial gauges in two different time points.In measurement
After the decrement difference for obtaining flat hinge two ends, you can the counter-force moment M z at flat hinge is calculated according to measured decrement difference.
For example, in the preferred embodiment, when the reading variation delta 1 and Δ that get two dial gauges
After 2, you can the rotational angle of top rotary table generation is first calculated according to above-mentioned reading variable quantity.For example, the rotation that top rotary table occurs
Angle can be calculated by formula as described below：
Δ θ=(Δ 1- Δs 2)/2/D
After the rotational angle for obtaining top rotary table generation is calculated, you can calculated and obtained at flat hinge according to the rotational angle
Counter-force moment M z.
For example, because the semicircle centre of form apart from half-breadth is 4R/3 π, therefore the angle of rotation that first can be occurred according to top rotary table
Degree calculates deformation Δ h at the semicircle centre of form：
Δ h=4R/3 π * (Δ 1- Δs 2)/2/D
According to Δ h is deformed at the above-mentioned semicircle centre of form, the power Δ F at the semicircle centre of form can be calculated：
Δ F=Δ h/H*E*A,
Wherein, H is the original thickness of slide plate 4, and E is the modulus of elasticity of slide plate 4, and A is the gross area of slide plate 4.
Then, the counter-force moment M z at flat hinge can be calculated according to the power Δ F at the above-mentioned semicircle centre of form：
Mz=2* Δ F*4R/3 π
From the foregoing, it will be observed that poor in the decrement that measurement obtains flat hinge two ends, you can calculated according to measured decrement difference
Counter-force moment M z at flat hinge.
In addition, in the inventive solutions, other modes can also be used to be counted according to measured decrement difference
The counter-force moment M z at flat hinge is calculated, specific computational methods will not be repeated here.
Step 13, according to the counter-force moment M z at flat hinge, the eccentricity value for obtaining rotating body beam section is calculated.
For example, in the preferred embodiment, swivel beam section first can be calculated according to the counter-force moment M z at flat hinge
Eccentric bending moment Mg.For example, formula as described below can be used to calculate Mg：
Mg=Mz+ (F1-F2) L
Wherein, F1 and F2 is two rigid support counter-forces at rotating body beam two ends, and assumes F1>F2；L turns for swivel section girder
The side length of hinge center one, as shown in Figure 2.
After calculating obtains rotating body beam section eccentric bending moment Mg, you can calculated and obtained according to swivel beam section eccentric bending moment Mg
Turn the eccentricity value e of beam section.It is, for example, possible to use formula as described below calculates e：
E=Mg/N,
Wherein, N is the weight of swivel beam section.
From the foregoing, it will be observed that passing through above-mentioned step 11~13, you can the eccentricity value e for obtaining rotating body beam section is calculated, so as to complete
The rotator construction of flat hinge is weighed.
Hereinafter, technical scheme will in more detail be introduced by taking a specific embodiment as an example.
Embodiment one：The rotator construction Weighing method of flat hinge on cable-stayed bridge.
Fig. 3 be the embodiment of the present invention one in flat hinge rotator construction Weighing method schematic flow sheet.As shown in figure 3,
In the present embodiment, the rotator construction Weighing method of the flat hinge on the cable-stayed bridge mainly includes step as described below：
Step 301, full framing is set up, beam-ends rigid support 8 is set at the two ends of full framing；In full framing and beam
Hold cast-in-place swivel section girder 1 and king-tower 10 in rigid support 8.As shown in Figure 2.
Step 302, two dial gauges 7 are disposed respectively in the left and right ends of top rotary table 2 and lower rotary table 6.As shown in Figure 2.
Step 303, tensioning suspension cable 9, removes full framing, and Auxiliary support is carried out by beam-ends rigid support 8.
Step 304, the reading variable quantity of two dial gauges 7 is measured, and flat hinge is calculated according to measured reading variable quantity
The counter-force moment M z at place.
Step 305, according to the counter-force moment M z at flat hinge, the eccentricity value for obtaining rotating body beam section is calculated.
For example, when the pulling force of suspension cable 9 is larger, swivel section girder 1 departs from beam-ends rigid support 8, now Mg=Mz.
And when the pulling force of suspension cable 9 is smaller, swivel section girder 1 and beam-ends rigid support 8 are without departing from can then measure beam firm
Property support counter-force be respectively F1 and F2 (it is assumed that F1>F2).It can now obtain：Mg=Mz+ (F1-F2) L, wherein, L is swivel section master
The side length of beam turning hinge center one.Then, the eccentricity value e for obtaining rotating body beam section can be calculated according to Mg：E=Mg/N.Wherein, N is to turn
The weight of body beam section.
Furthermore it is also possible to carry out accuracy evaluation to the rotator construction Weighing method of above-mentioned flat hinge.For example, the survey of dial gauge
Accuracy of measurement is 0.01mm, it can be seen from the size of the turning hinge of 4 tons, puts down the radius R=2.89m, top rotary table radius D=of hinge
8m, slide plate original thickness is 13mm, elastic modulus E=345MPa, area A=4.304m2.Therefore, when percentage meter reading changes
When measuring Δ 1- Δ 2=0.01mm, obtained eccentricity value eccentric distance e=0.6mm is calculated, construction needs can be met completely.
In summary, by using the rotator construction Weighing method of the flat hinge in the present invention, it is possible to achieve to flat hinge swivel
That constructs weighs.Moreover, the rotator construction Weighing method of the flat hinge provided in the present invention is simple to operate, required instrument and equipment
Few, it is only necessary to which that dial gauge carries out displacement measurement, construction survey is simple.In addition, the rotator construction Weighing method institute for passing through above-mentioned flat hinge
The measurement accuracy obtained can also meet requirement of engineering completely.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (9)
1. a kind of rotator construction Weighing method of flat hinge, it is characterised in that this method comprises the following steps：
A, the left and right ends between the upper and lower rotating disk of flat hinge is set set a dial gauge respectively；
B, the upper flat hinge two ends for obtaining by the dial gauge measurement flat hinge decrement it is poor, and according to decrement difference calculating
Counter-force moment of flexure at flat hinge；
C, according to the counter-force moment of flexure at flat hinge, calculate the eccentricity value for obtaining rotating body beam section.
2. according to the method described in claim 1, it is characterised in that the step B includes；
The reading of two dial gauges is read, the reading variable quantity of two dial gauges in two different time points is obtained；
The rotational angle that top rotary table occurs is calculated according to the reading variable quantity；
The rotational angle occurred according to the top rotary table is calculated to be deformed at the semicircle centre of form；
Deformed according at the semicircle centre of form, calculate the power at the semicircle centre of form；
According to the power at the above-mentioned semicircle centre of form, the counter-force moment of flexure at flat hinge is calculated.
3. method according to claim 2, it is characterised in that the calculation formula for the rotational angle that the top rotary table occurs
For：
△ θ=(△ 1- △ 2)/2/D
Wherein, △ θ are the rotational angle that top rotary table occurs；△ 1 and △ 2 is the reading variable quantity of two dial gauges；D is top rotary table
Radius.
4. method according to claim 3, it is characterised in that the calculation formula of deformation is at the semicircle centre of form：
△ h=4R/3 π * (△ 1- △ 2)/2/D
Wherein, △ h are to be deformed at the semicircle centre of form, and R is the radius of upper flat hinge and lower flat hinge.
5. method according to claim 4, it is characterised in that the calculation formula of the power at the semicircle centre of form is：
△ F=△ h/H*E*A
Wherein, △ F are the power at the semicircle centre of form, and H is the original thickness of slide plate, and E is the modulus of elasticity of slide plate, and A is total for slide plate
Area.
6. method according to claim 5, it is characterised in that the calculation formula of the counter-force moment of flexure at the flat hinge is：
Mz=2* △ F*4R/3 π
Wherein, Mz is the counter-force moment of flexure at the flat hinge.
7. method according to claim 6, it is characterised in that the step C includes：
Beam section eccentric bending moment is turned according to the counter-force calculation of Bending Moment at flat hinge；
The eccentricity value for obtaining rotating body beam section is calculated according to the swivel beam section eccentric bending moment.
8. method according to claim 7, it is characterised in that the calculation formula of the swivel beam section eccentric bending moment is：
Mg=Mz+ (F1-F2) L
Wherein, Mg is to turn beam section eccentric bending moment, F1 and two rigid support counter-forces that F2 is rotating body beam two ends, and F1>F2；L
For the side length of swivel section girder turning hinge center one.
9. method according to claim 8, it is characterised in that the calculation formula of the eccentricity value of the swivel beam section is：
E=Mg/N
Wherein, e is the eccentricity value of swivel beam section, and N is the weight of swivel beam section.
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| CN201410540161.XA CN104330212B (en) | 2014-10-13 | 2014-10-13 | A kind of rotator construction Weighing method of flat hinge |
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| CN201410540161.XA CN104330212B (en) | 2014-10-13 | 2014-10-13 | A kind of rotator construction Weighing method of flat hinge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105970835B (en) * | 2016-05-31 | 2017-10-27 | 中铁第五勘察设计院集团有限公司 | A kind of cable-stayed bridge rotator construction weighing structure and Weighing method |
| 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 |
Citations (3)
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| CN102808376A (en) * | 2012-08-23 | 2012-12-05 | 新津腾中筑路机械有限公司 | Bridge rotation construction support and bridge construction method |
| CN103909858A (en) * | 2013-01-04 | 2014-07-09 | 陕西重型汽车有限公司 | Plate spring suspension vehicle self-weighing system |
| CN103924530A (en) * | 2014-04-30 | 2014-07-16 | 中铁西南科学研究院有限公司 | Method and system for regulating and controlling balance weight in bridge swivel construction process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1904573A (en) * | 2006-08-10 | 2007-01-31 | 郑州机械研究所 | Measuring mechanism used for measuring substance mass center, shape center and mass center deviation |
| CN202099746U (en) * | 2011-06-01 | 2012-01-04 | 东北林业大学 | Cable-stayed bridge flat hinge rotator construction device for horizontal rotator construction |
| ES2403732B1 (en) * | 2011-09-28 | 2014-03-20 | Fundación Centro De Tecnologías Aeronáuticas | DEVICE FOR DETERMINING INERTIA TENSORS AND POSITIONS OF CENTERS OF GRAVITY IN THREE DIMENSIONS. |
| CN203603070U (en) * | 2013-11-29 | 2014-05-21 | 成都中交信达路桥工程有限公司 | Bridge pier top rotation system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808376A (en) * | 2012-08-23 | 2012-12-05 | 新津腾中筑路机械有限公司 | Bridge rotation construction support and bridge construction method |
| CN103909858A (en) * | 2013-01-04 | 2014-07-09 | 陕西重型汽车有限公司 | Plate spring suspension vehicle self-weighing system |
| CN103924530A (en) * | 2014-04-30 | 2014-07-16 | 中铁西南科学研究院有限公司 | Method and system for regulating and controlling balance weight in bridge swivel construction process |
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