CN108914775A - A method of it is positioned for beam sections - Google Patents
A method of it is positioned for beam sections Download PDFInfo
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- CN108914775A CN108914775A CN201810673242.5A CN201810673242A CN108914775A CN 108914775 A CN108914775 A CN 108914775A CN 201810673242 A CN201810673242 A CN 201810673242A CN 108914775 A CN108914775 A CN 108914775A
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- beam sections
- measuring points
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention relates to a kind of methods for beam sections positioning, include the following steps：After the completion of segment girder precast, first arrange 6 conventional measuring points, in beam sections lateral position, two newly-increased measuring points are set, after all measuring points are installed, coordinate value of all measuring points under coordinate system is measured, is converted by coordinate, obtains the space coordinate of beam sections during installation, verification is compared using the coordinate that total station survey obtains when installing with beam sections, guarantees the two deviation≤± 2mm.Compared with prior art, since the coordinate of measuring point is determining, and error is fixed, therefore is the accurate of controllable beam sections axis location by adjusting beam sections coordinate.Using the maximized feature of spacing between newly-increased measuring point, reduces the influence of position error and measurement error to plane corner, improve axis location precision.
Description
Technical field
The invention belongs to technical field of building construction, more particularly, to a kind of method for beam sections positioning.
Background technique
When carrying out beam sections origin reference location, since deflection angle error is affected to subsequent beam section, plane control is deposited
In difficulty, thus it is higher to segment positioning accuracy request.Traditional localization method is using the two sides cloth on beam sections axis
Four measuring points are set, beam sections offset is directly controlled by measuring point coordinate.But it is rotated based on direction across bridge to segment edge longitudinal position
The enlarge-effect objective law of shifting, when being positioned using the method, axis measuring point coordinate slightly deviation, beam sections direction across bridge margin location
Setting deviation can all amplify.Therefore a kind of new beam sections localization method is proposed based on actual needs.
Summary of the invention
The object of the invention is in order to control beam sections installation when positional shift, propose it is a kind of for beam sections positioning
Method, to guarantee the positioning of beam sections.
The purpose of the present invention can be achieved through the following technical solutions：
A method of it is positioned for beam sections, which is characterized in that include the following steps：
Firstly, 6 conventional measuring points (1~6) are first arranged, in beam sections lateral position after the completion of beam sections are prefabricated in the factory
Two newly-increased measuring points (7,8) are set,
Secondly, coordinate value of all measuring points under factory's coordinate system is measured after all measuring points are installed,
Then, in order to intuitively reflect the misalignment of axe of section assembling, coordinate transformation system is established, passes through coordinate and turns
It changes, obtains the space coordinate of beam sections during installation,
Finally, comparing school using the coordinate that total station survey obtains when installing with beam sections in beam sections installation
It tests, guarantees the two deviation≤± 2mm.
6 conventional measuring points (1~6) are located at two middle side parts of beam sections using symmetrical structure settings, beam sections it is every
Side is respectively provided with three conventional measuring points, and three conventional measuring points are located on the same line.
Two newly-increased measuring points (7,8) are located at the side of beam sections, and three ipsilateral conventional measuring points are located at same with beam sections
On straight line.
Using the maximized principle of horizontal spacing, the remoter distance the better between two newly-increased measuring points (7,8), therefore, two
Newly-increased measuring point (7,8) are close to the setting of the side of the length direction of beam sections.
It when carrying out beam sections positioning, establishes local coordinate system (i.e. bridge location coordinate system), arrangement principle in local coordinate system
It is as follows：
X-axis：Perpendicular to the two pier lines of centres,
Y-axis：The two pier lines of centres are parallel to,
Origin：Set up the nearest pier center line of reference block.
The pier refers to that the bridge pier for beam sections to be arranged, the reference block refer to first segment being set on bridge pier
Beam block, subsequent beam sections can continue location and installation based on first reference block.
Newly-increased measuring point (7,8) specifically arrangement principle is：
The distance of newly-increased nearest side of the measuring point apart from beam sections width direction, i.e., vertical bridge to distance be 0.05m≤Dz≤
0.10m；
The distance of newly-increased nearest side of the measuring point apart from beam sections length direction, i.e. direction across bridge distance be 0.05m≤Dh≤
0.10m。
Compared with prior art, the beneficial effects of the present invention are：Between localization method of the present invention is using increasing newly between measuring point
Away from maximized feature, reduces the influence of position error and measurement error to plane corner, improve axis location precision, more can
The accuracy when reasonability and beam sections for guaranteeing beam sections lateral shift error position.
Detailed description of the invention
Fig. 1, Fig. 2 are beam sections point layout schematic diagram.
In figure, 1~6 is conventional measuring point, and 7~8 be newly-increased measuring point, DhBack gauge, D are arranged for newly-increased measuring point direction across bridgezIt is new
Increase measuring point and indulges bridge to arrangement back gauge.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
With reference to Fig. 1, Fig. 2, when beam sections are prefabricated in factory, set on the basis of measuring point 1~6 in conventional 6 measuring points, figure
Two newly-increased measuring points are set, measuring point 7,8 in figure, newly-increased measuring point 7,8 guarantees that its horizontal spacing maximizes when installing.In all measuring points,
After i.e. measuring point 1~8 is installed in figure, coordinate value of the measuring point 1~8 under factory's coordinate system in all figures is measured.In order to
The misalignment of axe of intuitive reflection section assembling, establishes coordinate transformation system, is converted by coordinate, beam sections are calculated and are pacifying
Space coordinate when dress.In beam sections installation, the coordinate data that is obtained using total station survey and the coordinate that is calculated into
Row verification guarantees the two deviation≤± 2mm.
Wherein, with reference to Fig. 1, Fig. 2,6 conventional measuring points are located at two middle side parts of beam sections using symmetrical structure setting,
Every side of beam sections is respectively provided with three conventional measuring points, and three conventional measuring points are located on the same line.Two newly-increased measuring points are located at
The side of beam sections, three ipsilateral with beam sections conventional measuring points are located on the same line.
It when carrying out beam sections positioning, establishes local coordinate system (i.e. bridge location coordinate system), arrangement principle in local coordinate system
It is as follows：
X-axis：Perpendicular to the two pier lines of centres,
Y-axis：The two pier lines of centres are parallel to,
Origin：Set up the nearest pier center line of reference block.
The pier refers to that the bridge pier for beam sections to be arranged, the reference block refer to first segment being set on bridge pier
Beam block, subsequent beam sections can continue location and installation based on first reference block.
Since the coordinate of measuring point is determining, and error is fixed, therefore i.e. controllable by adjusting beam sections coordinate
Beam sections axis location it is accurate.Using the maximized feature of spacing between newly-increased measuring point, reduces position error and measurement misses
Influence of the difference to plane corner improves axis location precision.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (6)
1. a kind of method for beam sections positioning, which is characterized in that include the following steps：
After the completion of segment girder precast, 6 conventional measuring points are first arranged, two newly-increased measuring points are set in beam sections lateral position, are owned
After measuring point is installed, coordinate value of all measuring points under coordinate system is measured, is converted by coordinate, obtains beam sections during installation
Space coordinate, compare verification using the coordinate that total station survey obtains when installing with beam sections, guarantee the two deviation≤
±2mm。
2. a kind of method for beam sections positioning according to claim 1, which is characterized in that 6 conventional measuring points use
Symmetrical structure setting is located at two middle side parts of beam sections, and every side of beam sections is respectively provided with three conventional measuring points, three routines
Measuring point is located on the same line.
3. a kind of method for beam sections positioning according to claim 2, which is characterized in that two newly-increased measuring points are located at
The side of beam sections, three ipsilateral with beam sections conventional measuring points are located on the same line.
4. a kind of method for beam sections positioning according to claim 3, which is characterized in that two newly-increased measuring points are close
The side of the length direction of beam sections is arranged.
5. a kind of method for beam sections positioning according to claim 1, which is characterized in that carrying out beam sections positioning
When, local coordinate system is established, arrangement principle is as follows in local coordinate system：
X-axis：Perpendicular to the two pier lines of centres,
Y-axis：The two pier lines of centres are parallel to,
Origin：Set up the nearest pier center line of reference block.
6. a kind of method for beam sections positioning according to claim 1, which is characterized in that newly-increased measuring point is specifically arranged
Principle is：
The distance of newly-increased nearest side of the measuring point apart from beam sections width direction, i.e., vertical bridge to distance be 0.05m≤Dz≤
0.10m；
The distance of newly-increased nearest side of the measuring point apart from beam sections length direction, i.e. direction across bridge distance be 0.05m≤Dh≤
0.10m。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673242.5A CN108914775B (en) | 2018-06-26 | 2018-06-26 | method for positioning segmental beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673242.5A CN108914775B (en) | 2018-06-26 | 2018-06-26 | method for positioning segmental beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108914775A true CN108914775A (en) | 2018-11-30 |
| CN108914775B CN108914775B (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810673242.5A Active CN108914775B (en) | 2018-06-26 | 2018-06-26 | method for positioning segmental beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648239A (en) * | 2020-04-23 | 2020-09-11 | 中铁十六局集团第四工程有限公司 | Segmental beam construction positioning device and segmental beam construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08142034A (en) * | 1994-11-24 | 1996-06-04 | Kumagai Gumi Co Ltd | Automatic control device of form for short line match casting |
| CN102733311A (en) * | 2012-07-02 | 2012-10-17 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Line shape control method for short line method segment prefabrication construction |
| CN104748732A (en) * | 2015-03-26 | 2015-07-01 | 广州瀚阳工程咨询有限公司 | Measurement method for segmental precast bridge erection field |
| CN106223201A (en) * | 2016-07-26 | 2016-12-14 | 中南大学 | The method for correcting error of beam section bridge linear monitoring |
-
2018
- 2018-06-26 CN CN201810673242.5A patent/CN108914775B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08142034A (en) * | 1994-11-24 | 1996-06-04 | Kumagai Gumi Co Ltd | Automatic control device of form for short line match casting |
| CN102733311A (en) * | 2012-07-02 | 2012-10-17 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Line shape control method for short line method segment prefabrication construction |
| CN104748732A (en) * | 2015-03-26 | 2015-07-01 | 广州瀚阳工程咨询有限公司 | Measurement method for segmental precast bridge erection field |
| CN106223201A (en) * | 2016-07-26 | 2016-12-14 | 中南大学 | The method for correcting error of beam section bridge linear monitoring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648239A (en) * | 2020-04-23 | 2020-09-11 | 中铁十六局集团第四工程有限公司 | Segmental beam construction positioning device and segmental beam construction method |
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| CN108914775B (en) | 2020-01-31 |
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