CN110820586A - Bridge installation positioning method - Google Patents
Bridge installation positioning method Download PDFInfo
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- CN110820586A CN110820586A CN201911191526.1A CN201911191526A CN110820586A CN 110820586 A CN110820586 A CN 110820586A CN 201911191526 A CN201911191526 A CN 201911191526A CN 110820586 A CN110820586 A CN 110820586A
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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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Abstract
The invention discloses a bridge installation positioning method, which comprises the following steps: carrying out one-to-one modeling on each section of steel box girder to obtain a steel box girder model and a bridge model formed by splicing each section of steel box girder model; matching the coordinate system of the bridge model with the coordinate system of the actual bridge; rechecking the model measurement and control points on the corresponding steel box girder model according to the actual measurement and control points on each section of steel box girder; installing a steel box girder and performing coarse positioning; and adjusting the position of the actual measurement and control point on the corresponding steel box girder according to the coordinate value of the model measurement and control point so as to enable the coordinate value of the actual measurement and control point to be consistent with the coordinate value of the model measurement and control point. The accurate positioning of the actual measurement and control points is ensured through the model measurement and control points by performing three-dimensional modeling on the bridge and the steel box girder and utilizing the model measurement and control points which are marked on the steel box girder model and correspond to the actual measurement and control points on the steel box girder. The installation error of the steel box girder can be controlled in millimeter order of magnitude, and the installation precision and quality of the steel box girder are greatly improved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a bridge installation positioning method.
Background
How to realize space positioning in the process of on-site bridge installation and construction of the steel box girder bridge and to reach the accurate position of the design requirement is the key point of bridge installation, and in the aspect of how to position and assemble the section on-site hoisting construction of the urban elevated steel box girder, no instructive patent method is formed. The traditional installation mode mainly adjusts the spatial position of the steel box girder through manual observation, so that the installation of the steel box girder is difficult to ensure to reach the accurate position of the design requirement.
Therefore, how to solve the problem that the installation of the steel box girder cannot reach the accurate position of the design requirement is a problem to be solved urgently by those skilled in the art at present.
Disclosure of Invention
In view of the above, the present invention provides a method for installing and positioning a bridge, which includes three-dimensionally modeling a bridge and a steel box girder, and marking a model measurement and control point corresponding to an actual measurement and control point on the steel box girder on a steel box girder model, so as to ensure accurate positioning of the actual measurement and control point through the model measurement and control point, and finally, adjust the position of the bridge in place.
In order to achieve the above purpose, the invention provides the following technical scheme:
a bridge installation positioning method comprises the following steps:
carrying out one-to-one modeling on each section of steel box girder to obtain a steel box girder model and a bridge model formed by splicing each section of steel box girder model;
matching the coordinate system of the bridge model with the coordinate system of the actual bridge;
rechecking the model measurement and control points corresponding to the steel box girder model according to the actual measurement and control points on each section of steel box girder;
installing a steel box girder and performing coarse positioning;
and adjusting the position of the actual measurement and control point on the corresponding steel box girder according to the coordinate value of the model measurement and control point so as to enable the coordinate value of the actual measurement and control point to be consistent with the coordinate value of the model measurement and control point.
Preferably, before installing the steel box girder and performing rough positioning, the method further comprises:
and rechecking the serial number, the length and the interface size of the steel box girder.
Preferably, the installing the steel box girder and performing the rough positioning includes:
and installing the support of the steel box girder, respectively drawing the central line of the support and the central line of the wedge block at the bottom of the steel box girder, and during installation, enabling the central line of the wedge block at the bottom of the steel box girder to be matched with the central line on the support so as to perform primary positioning.
Preferably, the drawing of the center line of the support and the center line of the wedge block at the bottom of the steel box girder respectively comprises: the center line of the ink box ejection support and the center line of the wedge block at the bottom of the steel box girder are used.
Preferably, the installing the steel box girder and performing the rough positioning further comprises: and carrying out fine adjustment by utilizing positioning blocks between the steel box girders or a web plate inside the steel box girders.
Preferably, each steel box girder model is provided with at least three model measurement and control points, and the corresponding steel box girders are provided with the actual measurement and control points which have the same number as the steel box girder models and are in one-to-one correspondence with the steel box girder models.
According to the bridge installation positioning method provided by the invention, the bridge and the steel box girder are subjected to three-dimensional modeling, and the model measurement and control points which are marked on the steel box girder model and correspond to the actual measurement and control points on the steel box girder are utilized, so that the accurate positioning of the actual measurement and control points is ensured through the model measurement and control points. The method can be in place once after coarse positioning, namely, the accurate positioning is completed by adjusting the actual measurement and control points on the steel box girder to the coordinate values which are the same as the model measurement and control points, the installation error of the steel box girder can be controlled in millimeter order of magnitude, the installation accuracy and quality of the steel box girder are greatly improved, the construction error is reduced, the operation efficiency is improved, and meanwhile, better economic benefit is obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a specific embodiment of a bridge installation positioning method provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a bridge installation positioning method, which ensures the accurate positioning of actual measurement and control points through the model measurement and control points by three-dimensionally modeling a bridge and a steel box girder and marking the model measurement and control points corresponding to the actual measurement and control points on the steel box girder on a steel box girder model, thereby finally adjusting the position of the bridge in place.
Referring to fig. 1, fig. 1 is a flowchart illustrating a bridge installation positioning method according to an embodiment of the present invention.
The bridge installation positioning method provided by the invention comprises the following steps:
the method comprises the following steps: carrying out one-to-one modeling on each section of steel box girder to obtain a steel box girder model and a bridge model formed by splicing each section of steel box girder model;
step two: matching the coordinate system of the bridge model with the coordinate system of the actual bridge;
step three: rechecking the model measurement and control points on the corresponding steel box girder model according to the actual measurement and control points on each section of steel box girder;
step four: installing a steel box girder and performing coarse positioning;
step five: and adjusting the position of the actual measurement and control point on the corresponding steel box girder according to the coordinate value of the model measurement and control point so as to enable the coordinate value of the actual measurement and control point to be consistent with the coordinate value of the model measurement and control point.
The steel box girder is also called a steel plate box girder, and is a common structural form of a large-span bridge. The steel box girder is generally used on bridges with large span and is called as a steel box girder because the steel box girder is shaped like a box. When the steel box girder is integrally manufactured in a factory, a measurement and control point is marked at the top plate interface of each section of the box girder, the measurement and control point is an actual measurement and control point pointed by the invention, and the actual measurement and control point is marked on the entity of the steel box girder according to the measurement and control point on the drawing of the steel box girder.
When three-dimensional modeling is carried out on each section of steel box girder to obtain a steel box girder model, modeling is carried out according to a one-to-one ratio according to a drawing of the steel box girder, corresponding model measurement and control points are marked on each section of steel box girder model according to the measurement and control points on the drawing, and the model measurement and control points and the actual measurement and control points are marked according to the measurement and control points on the drawing of the steel box girder, so that the model measurement and control points and the actual measurement and control points are completely corresponding, and therefore installation of the actual steel box girder can be guided according to coordinate values of the model measurement and control points on the steel box girder model, namely the position of the actual measurement and control points on the actual steel box girder is adjusted to be the same as the coordinate values of the model measurement and control points on the steel.
The purpose of matching the coordinate system of the bridge model with the coordinate system of the actual bridge is as follows: in the process of installing the steel box girder, the position of the steel box girder is adjusted more conveniently, namely the actual measurement and control point on the steel box girder installed on site is adjusted to the coordinate position which is the same as the model measurement and control point on the steel box girder model, repeated coordinate conversion is not needed in the installation process, and the installation efficiency is improved. Specifically, a point on the ground where the actual bridge is located may be selected as a coordinate origin of the site coordinates, and the coordinate origin of the bridge model is converted into a coordinate value using the coordinate origin of the site coordinates as a reference point.
And rechecking the model measurement and control points on the corresponding steel box girder model according to the actual measurement and control points on each section of steel box girder on site so as to ensure that the model measurement and control points correspond to the actual measurement and control points one to one and ensure the reliability of subsequent installation. When the steel box girder is installed, the steel box girder should be initially positioned, so that the purpose of accurate positioning can be realized through fine adjustment in the following process, and the installation efficiency is improved. When the steel box girder is finely adjusted and accurately positioned, the coordinate system of the bridge model is matched with the coordinate system of the actual bridge, so that accurate positioning can be completed only by adjusting the actual measurement and control point on the steel box girder to the coordinate value which is the same as the model measurement and control point.
Therefore, according to the bridge installation positioning method provided by the invention, the accurate positioning of the actual measurement and control points is ensured through the model measurement and control points by performing three-dimensional modeling on the bridge and the steel box girder and utilizing the model measurement and control points which are marked on the steel box girder model and correspond to the actual measurement and control points on the steel box girder. The method can be in place once after coarse positioning, namely, the accurate positioning is completed by adjusting the actual measurement and control points on the steel box girder to the coordinate values which are the same as the model measurement and control points, the installation error of the steel box girder can be controlled in millimeter order of magnitude, the installation accuracy and quality of the steel box girder are greatly improved, the construction error is reduced, the operation efficiency is improved, and meanwhile, better economic benefit is obtained.
On the basis of the above embodiment, in order to further ensure that the steel box girder before installation meets the installation requirements, it is preferable that before installing the steel box girder and performing the rough positioning, the method further includes: and rechecking the serial number, the length and the interface size of the steel box girder. So as to discover and handle the steel box girder which does not meet the requirements in time, ensure the smoothness of the process of installing the steel box girder and improve the installation efficiency and the installation quality.
In view of the specific manner of coarsely positioning the steel box girder, it is preferable that the mounting of the steel box girder and the coarsely positioning include: and installing the support of the steel box girder, respectively drawing the central line of the support and the central line of the wedge block at the bottom of the steel box girder, and during installation, enabling the central line of the wedge block at the bottom of the steel box girder to be matched with the central line on the support so as to perform primary positioning.
In addition to the above embodiments, in consideration of another mode of roughly positioning the steel box girder, it is preferable that the installing the steel box girder and roughly positioning further include: and carrying out fine adjustment by utilizing positioning blocks between the steel box girders or a web plate inside the steel box girders. Because when processing the steel box girder, can be to setting up the locating piece that is used for the location between the steel box girder, during the installation, also can finely tune according to locating piece or the inside web between crossbeam and longeron.
In view of the specific manner of drawing the center lines on the support and the bottom wedge of the steel box girder, it is preferable that drawing the center lines of the support and the bottom wedge of the steel box girder includes: the center line of the ink box ejection support and the center line of the wedge block at the bottom of the steel box girder are used. Of course, the picture can be drawn by sliding with chalk or the like.
On the basis of the above embodiment, in order to ensure that the whole steel box girder is adjusted to the accurate position required by the design, it is preferable that at least three model measurement and control points are provided on each steel box girder model, and the steel box girders are provided with actual measurement and control points which have the same number as the steel box girder models and are in one-to-one correspondence. It should be noted that the three model measurement and control points should not be collinear to ensure that the three model measurement and control points can ensure that the steel box girder is adjusted to the accurate position required by the design, specifically, there are four model measurement and control points on each steel box girder model, and the four model measurement and control points are distributed at the two ends of the steel box girder model.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The bridge installation positioning method provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. A bridge installation positioning method is characterized by comprising the following steps:
carrying out one-to-one modeling on each section of steel box girder to obtain a steel box girder model and a bridge model formed by splicing each section of steel box girder model;
matching the coordinate system of the bridge model with the coordinate system of the actual bridge;
rechecking the model measurement and control points corresponding to the steel box girder model according to the actual measurement and control points on each section of steel box girder;
installing a steel box girder and performing coarse positioning;
and adjusting the position of the actual measurement and control point on the corresponding steel box girder according to the coordinate value of the model measurement and control point so as to enable the coordinate value of the actual measurement and control point to be consistent with the coordinate value of the model measurement and control point.
2. The bridge installation and positioning method of claim 1, further comprising, before the installing the steel box girder and performing the rough positioning:
and rechecking the serial number, the length and the interface size of the steel box girder.
3. The bridge installation and positioning method of claim 2, wherein the installation and rough positioning of the steel box girder comprises:
and installing the support of the steel box girder, respectively drawing the central line of the support and the central line of the wedge block at the bottom of the steel box girder, and during installation, enabling the central line of the wedge block at the bottom of the steel box girder to be matched with the central line on the support so as to perform primary positioning.
4. The method for installing and positioning the bridge according to claim 3, wherein the step of drawing the center line of the support and the center line of the wedge block at the bottom of the steel box girder respectively comprises the following steps: the center line of the ink box ejection support and the center line of the wedge block at the bottom of the steel box girder are used.
5. The bridge installation and positioning method of claim 4, wherein the installation and rough positioning of the steel box girder further comprises: and carrying out fine adjustment by utilizing positioning blocks between the steel box girders or a web plate inside the steel box girders.
6. The bridge installation and positioning method according to any one of claims 1 to 5, wherein each steel box girder model is provided with at least three model measurement and control points, and the corresponding steel box girders are provided with the actual measurement and control points which are the same in number as the steel box girder models and correspond to the steel box girder models one by one.
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| CN201911191526.1A CN110820586A (en) | 2019-11-28 | 2019-11-28 | Bridge installation positioning method |
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| CN201911191526.1A CN110820586A (en) | 2019-11-28 | 2019-11-28 | Bridge installation positioning method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351590A (en) * | 2021-12-14 | 2022-04-15 | 上海市基础工程集团有限公司 | Accurate positioning device and method for field installation of steel box girder manufacturing segment |
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Patent Citations (5)
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| JP2007002494A (en) * | 2005-06-23 | 2007-01-11 | Nippon Sharyo Seizo Kaisha Ltd | Erection management system |
| CN101556704A (en) * | 2009-05-19 | 2009-10-14 | 武汉一冶钢结构有限责任公司 | Method for establishing temporary supporting frame system assembled by steel structures |
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| CN109117558A (en) * | 2018-08-14 | 2019-01-01 | 湖南金海集团有限公司 | A kind of steel structure bridge digital simulation preassembling construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114351590A (en) * | 2021-12-14 | 2022-04-15 | 上海市基础工程集团有限公司 | Accurate positioning device and method for field installation of steel box girder manufacturing segment |
| CN114351590B (en) * | 2021-12-14 | 2024-05-31 | 上海市基础工程集团有限公司 | Device and method for accurately positioning field installation of steel box girder manufacturing section |
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