CN108534764A - A kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring - Google Patents
A kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring Download PDFInfo
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- CN108534764A CN108534764A CN201810230775.6A CN201810230775A CN108534764A CN 108534764 A CN108534764 A CN 108534764A CN 201810230775 A CN201810230775 A CN 201810230775A CN 108534764 A CN108534764 A CN 108534764A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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Abstract
The invention discloses a kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring, include the following steps：S1. the selection of each segment measuring point of steel box arch rib and label；S2. the Tangent line coordinate system for defining bridge arch rib measurement, using main bridge center as origin, mileage direction is x-axis, and upstream and downstream direction is y-axis, and elevation direction is z-axis, and total powerstation is arranged on the polygon control survey point with steel box arch rib measuring point intervisibility；S3., first segment steel box arch rib is installed；S4. when the second section of installation steel box arch rib, the second section steel box arch rib installation coarse positioning is completed by positioning device, by prism setting at some or all of steel box arch rib label measuring point, carry out the accurate adjustment of the second section steel box arch rib installation site, it is fine-tuning in certain error range, carries out the installation of the second section steel box arch rib；S5 repeats step S4, until the position for completing all steel box arch ribs measures and installation.The present invention can greatly speed up the speed of main arch rib segment measurement by converting point of contact coordinate system.
Description
Technical field
The present invention relates to the quick sides of measurement in bridge construction field, especially a kind of introversion formula steel case arch bridge main arch rib segment
Method.
Background technology
Under the new period, Bridges in Our Country engineering development trend be technological innovation, constantly change, in addition to meet traffic, safety
It is required that also the art of bridge aesthetics is required it is higher and higher, on the basis of traditional arch bridge, the continuous renewal of arch structure form with
Variation, promotes that Bridges are more and more abundant colorful, some combined system arch bridges, novel special-shaped bridge are more and more.Example
Such as, the Landscape Bridge engineering of sea 2 is that the sleeping arched girder of introversion formula encircles composite bridge before Shenzhen, and Hun River primary official's bridge in Shenyang City's floats for half-through
Band shape cable-carried arch bridge.Currently, during large span basket type steel case arch bridge steel box arch rib installation, due to steel box arch rib sheet
Body dead weight is larger, and needing crane barge to sling, steel box arch rib is in place, measures, adjustment, welds, until girth welding is completed, crane barge ability
Pine is hooked into the next steel box arch rib segment installation of row, and crane barge hiring cost is very high, if the time of wherein measurement links can be shortened,
It is so very favorable to reducing construction cost.The Liuzhou City official pool bridge built now is to use 80 state coordinates
System, elevation use 1985 state height benchmark, and because main bridge arch rib line style is catenary, it is interior to encircle the angle of plane and perpendicular
Incline 10 °, calculating measuring point coordinate is very difficult, time-consuming longer, therefore, a kind of method that can quickly calculate measuring point need to be found, to add
The measurement of fast main arch rib segment and precise velocity.
Invention content
The invention discloses a kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring, are sat by being converted into point of contact
Mark system, can greatly speed up the speed of main arch rib segment measurement.
To achieve the above object, the technical scheme is that：
A kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring, includes the following steps：
S1. each segment of steel box arch rib 3 groups of measuring points of label, wherein：Steel box arch rib segment front end 1 group of measuring point of top plate, front end bottom
1 group of measuring point of plate, 1 group of measuring point of end top plate, every group of measuring point include 3 measuring points, respectively 1 center measuring point and 2 both ends measuring points；
Front end roof station is apart from 300 ~ 800mm of front port, and end roof station is apart from 300 ~ 800mm of end port, front end floor station
Apart from 300 ~ 800mm of front port, the center measuring point of each top plate and bottom plate is located at arch rib axis, and one of both ends measuring point is set
It sets at the 1/5 ~ 1/7 of arch rib width, the relatively unilateral arch rib axis of two both ends measuring points in every group of measuring point is symmetrical set；
S2. the Tangent line coordinate system for defining bridge arch rib measurement, using main bridge center as origin, mileage direction is x-axis, upper and lower roam all around the would
To for y-axis, elevation direction is z-axis, and total powerstation is arranged on the polygon control survey point with steel box arch rib measuring point intervisibility；
S3., first segment steel box arch rib is installed, by prism be arranged steel box arch rib mark front end top plate and front end bottom plate part or
At whole measuring points, the co-ordinate system location of the orientation measurement first segment arch rib of total powerstation is faced, and encircle with the first segment precalculated
The conventional coordinates position of rib is compared, and the accurate adjustment of first segment steel box arch rib installation site is carried out according to comparing result, is fine-tuning to one
In fixed error range, the installation of first segment steel box arch rib is carried out；
S4. after in first segment steel box arch rib, installation is complete, when installation second saves steel box arch rib, in first segment steel box arch rib top plate
Position and web position mounting and positioning device complete the second section steel box arch rib installation coarse positioning by this positioning device, will
At some or all of steel box arch rib label measuring point, the orientation measurement second for facing total powerstation saves the coordinate of arch rib for prism setting
It is position, and compared with the conventional coordinates position of the second section arch rib precalculated, the second section steel is carried out according to comparing result
The accurate adjustment of case arch rib installation site, is fine-tuning in certain error range, carries out the installation of the second section steel box arch rib；
S5. step S4 is repeated, until the position for completing all steel box arch ribs measures and installation.
Further, in the step S3, positioning device is the ribbed stiffener being arranged in arch rib ceiling location and web position.
Further, in the step S3, arch rib accurate adjustment 20 DEG C ± 4 DEG C of temperature and also without sunshine under conditions of into
Row.
Further, in the step S3 and S4, when carrying out accurate adjustment when having sunshine daytime, side arch rib on the sunny side
Expanded by heating, the side inclination that arch rib can support or oppose positive, the inclined of arch rib is calculated according to steel linear expansion coefficient 1.2*10-4* Δs t*l
Shifting amount, wherein Δ t are the temperature difference, and l is the length of side arch rib on the sunny side, on daytime according to the pre- deviator of calculating come accurate adjustment arch rib, evening
Upper review arch rib position is installed after determining in the error range of arch rib position.
Further, in the step S1, front end roof station is apart from front port 500mm, end roof station distance end
Port 500mm, front end floor station is apart from front port 500mm.
Further, in the step S1, one of both ends measuring point is arranged at the 1/6 of arch rib width, every group of measuring point
In the relatively unilateral arch rib axis of two both ends measuring points be symmetrical set.
Further, in the step S3, prism is arranged at the both ends measuring point that steel box arch rib marks, carries out steel case arch
The adjustment of rib position, then mirror is arranged at the center measuring point that steel box arch rib marks, carry out the review of steel box arch rib position.
Above-described introversion formula steel case arch bridge main arch rib segment method for fast measuring, has the following advantages：
（1）By selection Tangent line coordinate system, the fussy degree of calculating can be substantially reduced, and then improve the speed of calculating, and
Rib-lifting section will not obscure orientation when being adjusted, improve accurate adjustment arch rib efficiency.
（2）Due to the raising of calculating speed, mating lifting machine usage time can be greatly decreased in the present invention, improve hoisting machine
Tool service efficiency.
（3）The present invention used in measurement process can rapid-aligning positioning device, and then improve measuring speed and
Precision, construction error significantly reduce.
（4）The present invention further on daytime by the pre- deviator of calculating come accurate adjustment arch rib, when to considerably increase measurement
Between, and then shorten the construction period.
（5）The quick positioning of introversion formula steel case arch bridge main arch rib segment, especially large span can be realized through the invention
The quick positioning of introversion formula steel case arch bridge main arch rib segment can greatly reduce the hiring cost of crane barge, accelerate arch rib adjustment contraposition
Speed, have preferable popularizing application prospect.
Description of the drawings
Fig. 1 is the measuring point main structure diagram of the present invention.
Fig. 2 is the A-A section structure diagrams of Fig. 1.
Fig. 3 is the B-B section structure diagrams of Fig. 1.
Fig. 4 is the Tangent line coordinate system schematic diagram of the present invention.
Fig. 5 is the horse plate main structure diagram of the present invention.
Fig. 6 is the C-C section structure diagrams of Fig. 5.
In figure, measuring point 1, center measuring point 1a, both ends measuring point 1b, top plate 2, bottom plate 3, horse plate 4, main bridge center 5.
Specific implementation mode
Below with reference to specific embodiment, the invention will be further described, but protection scope of the present invention be not limited to it is following
Embodiment.
A kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring, includes the following steps：
S1. each segment of steel box arch rib 3 groups of measuring points 1 of label, as shown in Figure 1,2 and 3, wherein：It pushes up steel box arch rib segment front end
1 group of measuring point 1 of plate, 1 group of measuring point 1 of front end bottom plate, 1 group of measuring point 1 of end top plate, every group of measuring point 1 include 3 measuring points, in respectively 1
Heart measuring point 1a and 2 both ends measuring points；Front end roof station 1 is apart from 300 ~ 800mm of front port, and end roof station 1 is apart from end
Mouthful 300 ~ 800mm, for front end floor station 1 apart from 300 ~ 800mm of front port, the center measuring point 1a of each top plate and bottom plate is located at arch
At rib axis, one of both ends measuring point 1b is arranged at the 1/5 ~ 1/7 of arch rib width, two both ends measuring points in every group of measuring point
The relatively unilateral arch rib axis of 1b are symmetrical set.
In this step, measuring point keeps certain distance with front port, rear port, has the following advantages：（1）Ensure to measure people
The safety of member；（2）It can avoid arch rib diaphragm plate；（3）If measuring point is too near to arch rib port, when arch rib wielding neck, generates high temperature
Measuring point may be made to change, so influence measure accuracy, the present embodiment by measuring point be set as apart from port 300 ~
800mm can improve the accuracy of measurement well.
And the selection of both ends measuring point 1b distances, mainly consider following factor：（1）The calculating side of measuring point coordinate and elevation
Just；（2）The safety of personnel's erect-position when measurement；（3）Prevent generation high temperature when arch rib wielding neck from measuring point being made to change.
In this step, in summary factor, optimal scheme are front end roof station 1 apart from front port 500mm, end
Roof station 1 is apart from end port 500mm, and front end floor station 1 is apart from front port 500mm, the center survey of each top plate and bottom plate
Point 1a is located at arch rib axis, and one of both ends measuring point 1b is arranged at the 1/6 of arch rib width, two two in every group of measuring point
The end relatively unilateral arch rib axis of measuring point 1b are symmetrical set.
S2. the Tangent line coordinate system for defining bridge arch rib measurement, as shown in figure 4, with main bridge center 5（I.e. main bridge arch axis with
The intersection point of main bridge median plane）For origin, mileage direction is x-axis, and upstream and downstream direction is y-axis（General upstream is positive direction）, elevation
Direction is z-axis, and total powerstation is arranged on the polygon control survey point with steel box arch rib measuring point intervisibility.
At most it is only 3 digits since Tangent line coordinate system is mainly using arch rib center as origin, before decimal point in this step,
Can quickly calculate and error amount and judge the direction of arch rib deviation, easily facilitate operation, operating personnel can be made to be easier to understand, can and
When rectify a deviation to arch rib.It is 6 digits compared to 80 national coordinate systems, before decimal point, calculates more complicated, is inputted when building a station
Data are more cumbersome.Therefore, the present embodiment substantially increases the speed of calculating, and in rib-lifting section by the adjustment of coordinate system
Orientation will not be obscured when being adjusted, and improve accurate adjustment arch rib efficiency.
S3., first segment steel box arch rib is installed, prism is arranged to the portion for marking front end top plate and front end bottom plate in steel box arch rib
Point or whole measuring point at, face the co-ordinate system location of the orientation measurement first segment arch rib of total powerstation, and with precalculate first
The conventional coordinates position of section arch rib is compared, and the accurate adjustment of first segment steel box arch rib installation site, accurate adjustment are carried out according to comparing result
To certain error range, the installation of first segment steel box arch rib is carried out.
In this step, positioning device generally use is ribbed stiffener in arch rib ceiling location and web position, both can be with
The intensity of steel box arch rib is reinforced, and the quick positioning of part realization steel box arch rib one end of its protrusion can be utilized.
In addition, positioning device can also include horse plate 4, after first segment steel box arch rib segment is installed, in its extreme higher position
Top plate and web inner wall welding horse plate 4, and 4 part of horse plate protrudes from the port of extreme higher position, thus, in installation second
When saving steel box arch rib, so that it may the second section steel box arch rib to be lifted on to 4 outside of horse plate of prepackage and close to horse plate 4, slightly determine
Subsequent fine tune pendulous frequency is reduced, to achieve the purpose that quick measurement and positioning in position.
S4. after in first segment steel box arch rib, installation is complete, when installation second saves steel box arch rib, in first segment steel box arch rib
Ceiling location and web position mounting and positioning device, it is by this positioning device that the second section steel box arch rib installation coarse positioning is complete
At by prism setting at some or all of steel box arch rib label measuring point 1, the orientation measurement second for facing total powerstation saves arch rib
Co-ordinate system location, and compared with the conventional coordinates position of the second section arch rib precalculated, the is carried out according to comparing result
The accurate adjustment of two section steel box arch rib installation sites, is fine-tuning in certain error range, carries out the installation of the second section steel box arch rib.
The positioning device of second section steel box arch rib equally also includes the ribbed stiffener of arch rib ceiling location and web position, and
Horse plate 4.
S5. step S4 is repeated, until the position for completing all steel box arch ribs measures and installation.
It is to have certain limitation for measuring timing in procedure described above S3 and S4, arch rib accurate adjustment one
As carried out within 20 DEG C ± 4 DEG C of temperature and under conditions of there is no sunshine.In the case of daytime, side arch rib on the sunny side by
It thermally expands, the side inclination that arch rib can support or oppose positive, to solve the problems, such as to be unable to daytime accurate measurement adjustment, the present embodiment can also have
Accurate adjustment is carried out when sunshine, at this moment, the offset of arch rib can be calculated according to steel linear expansion coefficient 1.2*10-4* Δs t*l,
Wherein Δ t is the temperature difference, and l is the length of side arch rib on the sunny side, on daytime according to the pre- deviator of calculating come accurate adjustment arch rib, at night again
Arch rib position is checked, is installed after determining in the error range of arch rib position.This method is in day temperature height
When provide the discreet value of arch rib adjusting, utilize immeasurable time on conventional daytime to carry out rib-lifting section and measure to adjust, increase
Time of measuring is added, and then has achieved the purpose that quickly to position.
To improve the accuracy of accurate adjustment, and ensure the speed of accurate adjustment, in step s3, prism is arranged in steel box arch rib mark
At the both ends measuring point 1b of note, the adjustment of steel box arch rib position can be carried out, mirror is arranged in steel box arch rib mark again after the completion of adjustment
At the center measuring point 1a of note, the review of steel box arch rib position is carried out.
Claims (7)
1. a kind of introversion formula steel case arch bridge main arch rib segment method for fast measuring, it is characterised in that include the following steps：
S1. each segment of steel box arch rib 3 groups of measuring points of label, wherein：Steel box arch rib segment front end 1 group of measuring point of top plate, front end bottom
1 group of measuring point of plate, 1 group of measuring point of end top plate, every group of measuring point include 3 measuring points, respectively 1 center measuring point and 2 both ends measuring points；
Front end roof station is apart from 300 ~ 800mm of front port, and end roof station is apart from 300 ~ 800mm of end port, front end floor station
Apart from 300 ~ 800mm of front port, the center measuring point of each top plate and bottom plate is located at arch rib axis, and one of both ends measuring point is set
It sets at the 1/5 ~ 1/7 of arch rib width, the relatively unilateral arch rib axis of two both ends measuring points in every group of measuring point is symmetrical set；
S2. the Tangent line coordinate system for defining bridge arch rib measurement, using main bridge center as origin, mileage direction is x-axis, upper and lower roam all around the would
To for y-axis, elevation direction is z-axis, and total powerstation is arranged on the polygon control survey point with steel box arch rib measuring point intervisibility；
S3., first segment steel box arch rib is installed, by prism be arranged steel box arch rib mark front end top plate and front end bottom plate part or
At whole measuring points, the co-ordinate system location of the orientation measurement first segment arch rib of total powerstation is faced, and encircle with the first segment precalculated
The conventional coordinates position of rib is compared, and the accurate adjustment of first segment steel box arch rib installation site is carried out according to comparing result, is fine-tuning to one
In fixed error range, the installation of first segment steel box arch rib is carried out；
S4. after in first segment steel box arch rib, installation is complete, when installation second saves steel box arch rib, in first segment steel box arch rib top plate
Position and web position mounting and positioning device complete the second section steel box arch rib installation coarse positioning by this positioning device, will
At some or all of steel box arch rib label measuring point, the orientation measurement second for facing total powerstation saves the coordinate of arch rib for prism setting
It is position, and compared with the conventional coordinates position of the second section arch rib precalculated, the second section steel is carried out according to comparing result
The accurate adjustment of case arch rib installation site, is fine-tuning in certain error range, carries out the installation of the second section steel box arch rib；
S5. step S4 is repeated, until the position for completing all steel box arch ribs measures and installation.
2. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S3, positioning device is the ribbed stiffener being arranged in arch rib ceiling location and web position.
3. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S3, arch rib accurate adjustment is carried out in 20 DEG C ± 4 DEG C of temperature and do not have sunshine under conditions of.
4. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S3 and S4, when carrying out accurate adjustment when having sunshine daytime, side arch rib expanded by heating on the sunny side, arch rib
The side inclination that can support or oppose positive, the offset of arch rib is calculated according to steel linear expansion coefficient 1.2*10-4* Δs t*l, wherein Δ t is
The temperature difference, l are the length of side arch rib on the sunny side, and arch rib position is checked at night according to the pre- deviator of calculating come accurate adjustment arch rib on daytime,
It is installed after determining in the error range of arch rib position.
5. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S1, front end roof station is apart from front port 500mm, and end roof station is apart from end port 500mm, front end
Floor station is apart from front port 500mm.
6. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S1, one of both ends measuring point is arranged at the 1/6 of arch rib width, and two both ends in every group of measuring point are surveyed
The relatively unilateral arch rib axis of point is symmetrical set.
7. introversion formula steel case arch bridge main arch rib according to claim 1 segment method for fast measuring, it is characterised in that：
In the step S3, prism is arranged at the both ends measuring point that steel box arch rib marks, carries out the adjustment of steel box arch rib position,
Prism is arranged at the center measuring point that steel box arch rib marks again, carries out the review of steel box arch rib position.
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Cited By (4)
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| CN109214099A (en) * | 2018-09-20 | 2019-01-15 | 中建三局基础设施建设投资有限公司 | A kind of arch rib steel pipe location Calculation and construction method |
| CN109238077A (en) * | 2018-10-31 | 2019-01-18 | 湖南联智桥隧技术有限公司 | A kind of positioning device and its measurement method of determining round arch rib axis physical location |
| CN109612429A (en) * | 2018-12-27 | 2019-04-12 | 郑州市第建筑工程集团有限公司 | A kind of 3-D positioning method of the segment beam end prestress pipe based on total station |
| CN112525091A (en) * | 2020-11-04 | 2021-03-19 | 中铁大桥局第七工程有限公司 | Construction method integrating installation, positioning and monitoring of steel box truss arch bridge |
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| CN109612429A (en) * | 2018-12-27 | 2019-04-12 | 郑州市第建筑工程集团有限公司 | A kind of 3-D positioning method of the segment beam end prestress pipe based on total station |
| CN112525091A (en) * | 2020-11-04 | 2021-03-19 | 中铁大桥局第七工程有限公司 | Construction method integrating installation, positioning and monitoring of steel box truss arch bridge |
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| CN108534764B (en) | 2020-05-15 |
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