CN112900266B - Steel truss girder splicing linear control method - Google Patents
Steel truss girder splicing linear control method Download PDFInfo
- Publication number
- CN112900266B CN112900266B CN202110017957.7A CN202110017957A CN112900266B CN 112900266 B CN112900266 B CN 112900266B CN 202110017957 A CN202110017957 A CN 202110017957A CN 112900266 B CN112900266 B CN 112900266B
- Authority
- CN
- China
- Prior art keywords
- steel truss
- truss girder
- steel
- girder
- assembled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- 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
Abstract
The invention relates to the technical field of engineering construction auxiliary equipment, in particular to a linear control method for splicing a steel truss girder, which comprises the following steps: setting a starting point and an end point of an initial longitudinal axis of the steel truss girder to be assembled, and setting four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference; arranging an observation platform on an extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing a steel truss girder splicing control network; assembling the steel truss girders, determining the coordinates of the observation platform based on the steel truss girder assembling control network when each steel truss girder segment is assembled, and then performing linear measurement of the steel truss girder assembling jig frame and linear measurement of the lower chord. The problem that the assembly linear control is influenced due to the fact that the observation platform is displaced because of geological settlement or extrusion of the foundation can be effectively solved.
Description
Technical Field
The invention relates to the technical field of engineering construction auxiliary equipment, in particular to a linear control method for splicing a steel truss girder.
Background
The bridge span of the highway-railway dual-purpose bridge or the double-layer highway bridge is increasingly large, and when the bridge type adopts a suspension bridge or a cable-stayed bridge, the upper structure is usually designed into a multi-span continuous steel truss structure form. The steel truss girder erection mainly adopts construction modes such as split bar component assembling, truss type assembling and large section assembling. After the steel truss girder rod pieces are manufactured on the special jig frame of a factory, the steel truss girder rod pieces are pre-assembled on the assembling jig frame, and after the structural size and the linear matching meet the design requirements, the steel truss girder rod pieces are decomposed into unit blocks or segments and transported to the bridge site position for erection. In order to ensure that the steel truss girder is smoothly erected and the shape of the formed bridge meets the design requirement, the linear measurement control of the steel truss girder in the assembling process on the jig frame is very important.
At present, the linear measurement control in the steel truss beam assembling process mostly adopts the following methods:
parallel line method: according to the method, after a starting point (A) and an end point (B) of a longitudinal axis of a steel truss girder to be assembled are marked on the spot in a selected steel girder manufacturing field, A, B is connected and then translated to the outer side of a steel girder assembling area. The total station takes A, B two points as a measuring station and a rear viewpoint, and is used for assembling the arrangement of a longitudinal base line, a transverse base line and a datum point on a jig and measuring the linear shape of the steel truss girder. The disadvantages of this method are: although A, B marks on the ground and is convenient for measurement when being used for setting longitudinal and transverse base lines and a reference point of an assembling jig frame, the positions of the lower chord top surface and the upper chord top surface of the steel truss girder relative to the ground are high, direct measurement cannot be achieved, the setting point needs to be measured to the lower chord top surface or the upper chord top surface again, the measurement reference is not uniform easily, and the method has large measurement error.
The method for establishing the control network by the GNSS comprises the following steps: the method arranges four control points around a steel beam manufacturing field, and the four control points are arranged by taking the longitudinal axis of the steel truss girder to be assembled as a reference. The method comprises the steps of adopting a GNSS static measurement method, collecting data according to the requirements of precision such as 'railway engineering survey specification' III, taking one edge parallel to two points A, B as a starting calculation edge, setting a starting azimuth angle to be 0 degree 0'0', setting a starting calculation point coordinate to be (0,0), and establishing the steel truss girder assembling control network through strict adjustment calculation. And (3) establishing an observation platform on the basis, and measuring the assembling jig of the steel truss girder and the assembling line shape of the steel truss girder. The disadvantages of this method are: although the method for establishing the control network by the GNSS is simple and easy to operate, the side length of the GNSS measurement is short, and the relative accuracy is low. By adopting a method of firstly building a control network and then determining the assembling axis of the steel truss girder, the assembling longitudinal axis of the steel truss girder is not coincident with the X axis in the control network, and the linear measurement data can not visually reflect the linear change condition of the steel truss girder.
An axis control method: the method comprises the steps of marking a starting point (A) and an end point (B) of a longitudinal axis of a steel truss girder to be assembled on the spot in a selected steel girder manufacturing field, then manufacturing two observation platforms on an extension line of a A, B connecting line, wherein one observation platform is a measuring station and the other observation platform is a rear viewpoint, and when the steel truss girder is designed to be three girders, the two observation platforms transversely translate for the same distance along the steel girder. The disadvantages of this method are: the longitudinal and transverse base lines and the reference points are arranged on the assembling jig frame by adopting the method, the measurement is convenient, the longitudinal axis point of the steel truss girder is taken as an X axis, the assembling coordinate system of the steel truss girder is established, and the linear measurement data can intuitively reflect the linear change condition of the steel truss girder. The upper chord line shape measurement needs turning points due to the limitation of the height of the built observation platform. The operation such as transportation in a steel truss girder factory may cause the position of the observation platform to change, so that the linear observation data reference is not uniform, and the observation data is inaccurate.
In addition, although foundation treatment is carried out on the steel truss girder splicing field, sedimentation still occurs, so that the observation platform is deformed; the steel truss girder assembling site has more vehicles for hoisting and transporting large-scale members, when the girder is moved for storage, a large number of large-scale equipment such as heavy cranes are used, the foundation is easy to be extruded, and the observation platform is caused to displace, so that the linear control of the steel truss girder assembling is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a steel truss girder assembling line shape control method which can effectively solve the problem that the steel truss girder assembling line shape control is influenced due to the fact that an observation platform is displaced because geological settlement of a steel truss girder assembling site or a foundation is extruded.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a linear control method for splicing a steel truss girder, which comprises the following steps:
setting a starting point and an end point of an initial longitudinal axis of the steel truss girder to be assembled, and setting four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference;
setting an observation platform on an extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing a steel truss girder splicing control network;
assembling the steel truss girders, determining the coordinates of the observation platform based on the steel truss girder assembling control network when each steel truss girder segment is assembled, and then performing linear measurement of the steel truss girder assembling jig frame and linear measurement of the lower chord.
In some optional embodiments, during assembly of each steel truss girder segment, after performing steel truss girder assembly jig alignment measurement and lower chord alignment measurement, erecting the total station to the top surface of the upper chord of the steel truss girder, determining coordinates of the total station based on a steel truss girder assembly control network, and then performing upper chord alignment measurement on the steel truss girder.
In some optional embodiments, sequentially observing the four control points to obtain the plane coordinates of the four control points includes the following steps:
the total station takes the end point as a rear view point, takes the total station to the end point as the initial direction of the lead measurement, and sets an initial coordinate azimuth angle;
and observing the control points in sequence according to the technical requirements of measuring three or more than four conducting wires to form a closed conducting wire, and calculating the plane coordinates of the four points through strict adjustment.
In some optional embodiments, when each steel truss section is assembled, after determining the coordinates of the observation platform based on the steel truss assembly control network, performing linear measurement and lower chord linear measurement on the steel truss assembly jig, specifically including:
erecting a total station to an observation platform, and determining the coordinates of the observation platform by adopting a rear intersection method in a steel truss beam assembly control network;
adjusting the total station to an initial coordinate azimuth angle, and determining an assembling longitudinal axis of the assembled steel truss girder;
and performing linear measurement of the steel truss girder assembly jig frame and linear measurement of the lower chord by using a total station.
In some alternative embodiments, when the steel truss to be assembled is a double-truss steel truss, the initial longitudinal axis is the center line of the double-truss steel truss; when the steel truss girder to be assembled is a three-truss steel truss girder, the initial longitudinal axis is the central line of the middle truss node when the three-truss steel truss girder is adopted.
In some optional embodiments, when the steel trussed beam to be assembled is a double-truss steel trussed beam, the coordinates of the observation platform are determined directly based on a steel trussed beam assembling control network;
and when the steel trussed girder to be assembled is a three-truss steel trussed girder, transversely translating the observation platform to a second set distance, and determining the coordinates of the observation platform based on the steel trussed girder assembling control network.
In some optional embodiments, the observation platform adopts a steel pipe pile stabilized foundation, and the control point adopts a forced centering observation device.
In some alternative embodiments, the first set distance is 20-30m.
In some optional embodiments, the sight of the total station arranged on the observation platform exceeds the top surface of the lower chord of the steel truss girder to be assembled by 1-3m.
In some alternative embodiments, the four control points are spaced 2-3 times the distance between the beginning and end points of the initial longitudinal axis.
Compared with the prior art, the invention has the advantages that: setting a starting point and an end point of an initial longitudinal axis of the steel truss girder to be assembled, and setting four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference; setting an observation platform on an extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing a steel truss girder splicing control network; in the process of assembling the steel truss girder, when each steel truss girder segment is assembled, firstly, the coordinates of the observation platform are determined based on the steel truss girder assembling control network, and then the linear measurement of the steel truss girder assembling jig frame and the linear measurement of the lower chord are carried out. Geological settlement can not occur around the built steel truss girder assembling control net, and the steel truss girder assembling control net can not be extruded, so that the coordinates of the steel truss girder assembling control net can not be changed, and the measurement precision is high. During measurement, the longitudinal axis of the assembled steel truss girder can be controlled to coincide with the X axis in the control network, linear measurement data of the steel truss girder can visually reflect the linear change condition, and the assembly jig frame measurement and the linear measurement of the upper chord and the lower chord of the steel truss girder are finished in a framework of the steel girder assembling control network, so that the three measurements have uniform reference and can more accurately reflect the relative structural relationship of the corresponding nodes of the upper chord and the lower chord of the steel truss girder. In the process of assembling the steel truss girder, stations are newly built in the steel girder assembling control net framework in each measurement, and the coordinates of the survey stations can be obtained at any time by adopting a rear intersection method, so that the error of measurement data caused by the displacement of the observation platform is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a control method for assembling line shapes of steel trussed beams according to an embodiment of the present invention;
FIG. 2 is a schematic view of an initial longitudinal axis of a steel truss girder to be assembled according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of four control points and an observation platform according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the construction of a steel truss girder splicing control net in the embodiment of the invention;
FIG. 5 is a schematic diagram of determining coordinates of an observation platform according to an embodiment of the present invention;
FIG. 6 is a schematic view of the measurement of the lower chord line shape of the steel truss girder in the embodiment of the invention;
FIG. 7 is a schematic illustration of a chord line measurement on a steel truss beam in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the invention provides a linear control method for steel truss girder assembly, which comprises the following steps:
as shown in fig. 2 and 3, S1: setting a starting point and an end point of an initial longitudinal axis of the steel truss girder to be assembled, and setting four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference.
Specifically, a starting point (A) and an end point (B) of a longitudinal axis of the steel truss to be assembled are calibrated on the spot in a selected steel truss manufacturing field. Four control points (K1-K4) are embedded in stable positions around a steel beam manufacturing field by taking the longitudinal axis of the steel truss girder to be assembled as a reference, and are all arranged in a rectangular symmetrical mode by adopting forced centering observation piers.
Preferably, the spacing between the four control points is 2-3 times the spacing between the start and end points of the initial longitudinal axis.
As shown in fig. 4, S2: and arranging an observation platform on the extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing the steel truss girder assembled control network.
In this embodiment, the four control points and the observation platform are arranged without any sequence, and the observation platform is firstly erected or the four control points are arranged firstly to achieve the technical effect of the scheme.
Preferably, the first set distance is 20-30m. And the sight of the total station arranged on the observation platform exceeds the top surface of the lower chord of the steel truss girder to be assembled by 1-3m.
Preferably, the sequentially observing the four control points to obtain the plane coordinates of the four control points includes the following steps: the total station takes the end point as a rear view point, takes the total station to the end point as the initial direction of the lead measurement, and sets an initial coordinate azimuth angle; according to the technical requirements of measuring four equal conducting wires, the control points are observed in sequence to form a closed conducting wire, and the plane coordinates of the four points are obtained through strict adjustment calculation.
Specifically, the total station is erected on an observation platform (C), the distance L from the total station to A is measured, a (-L, 0) point is taken as a station coordinate, a point B is taken as a rear viewpoint, the azimuth angle of an initial coordinate is set to be 0 degree 0'0', the points B-C are taken as lead measurement initial directions, four control points K1-K4 are observed in sequence according to the technical requirements of four equal lead measurement, a closed lead is formed, the plane coordinates of the four points are obtained through strict adjustment calculation, and a steel truss beam splicing control network is established.
As shown in fig. 5 to 7, S3: assembling the steel truss girders, determining the coordinates of the observation platform based on the steel truss girder assembling control network when each steel truss girder segment is assembled, and then performing linear measurement of the steel truss girder assembling jig frame and linear measurement of the lower chord. Specifically, in the subsequent steel truss girder assembling process, a new station needs to be set in the steel girder assembling control net frame for each linear measurement, and the steel truss girder assembling jig frame measurement and the steel truss girder lower chord linear measurement are carried out. The total station instrument used for measurement is not lower than (1', 1+ 1ppm) in nominal precision.
Preferably, when each steel truss girder segment is assembled, after the steel truss girder assembling jig frame linear measurement and the lower chord linear measurement are carried out, the total station is erected to the top surface of the upper chord of the steel truss girder, and after the coordinates of the total station are determined based on the steel truss girder assembling control network, the upper chord linear measurement of the steel truss girder is carried out.
Preferably, when each steel truss section is assembled, after determining the coordinates of the observation platform based on the steel truss assembling control network, the linear measurement of the steel truss assembling jig and the lower chord linear measurement are performed, which specifically includes: erecting a total station to an observation platform, and determining the coordinates of the observation platform by adopting a rear intersection method in a steel truss beam assembly control network; adjusting the total station to an initial coordinate azimuth angle, and determining an assembling longitudinal axis of the assembled steel truss girder; and (5) performing linear measurement on the steel truss girder assembly jig frame and linear measurement on the lower chord by using a total station.
Specifically, the total station is erected on an observation platform (C), a backward intersection method is adopted in a steel truss girder splicing control net frame, the station is arranged when the azimuth angle of the total station is adjusted to be 0 degree 0'0' direction, and the station is used as the longitudinal axis of the steel truss girder to be spliced and is used for measuring the splicing jig frame of the steel truss girder and measuring the lower chord line shape of the steel truss girder.
Preferably, when the steel truss girder to be assembled is a double-truss steel truss girder, the initial longitudinal axis is the central line of the double-truss steel truss girder; when the steel truss girder to be assembled is a three-truss steel truss girder, the initial longitudinal axis is the central line of the truss node when the three-truss steel truss girder is adopted.
Preferably, when the steel truss girder to be assembled is a double-truss steel truss girder, the coordinates of the observation platform are determined directly based on the steel truss girder assembling control network; and when the steel trussed girder to be assembled is a three-truss steel trussed girder, transversely translating the observation platform to a second set distance, and determining the coordinates of the observation platform based on the steel trussed girder assembling control network. Specifically, the observation platform (C) translates, the coordinate of the observation station is (-L, +/-S), and the total station adopts the same method to set the station.
Preferably, the observation platform adopts a steel pipe pile stable foundation, and the control point adopts a forced centering observation device.
In conclusion, the method sets the starting point and the end point of the initial longitudinal axis of the steel truss girder to be assembled, and sets four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference; arranging an observation platform on an extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing a steel truss girder splicing control network; in the process of assembling the steel truss girder, when each steel truss girder section is assembled, after the coordinates of the observation platform are determined based on the steel truss girder assembling control net, the linear measurement of the steel truss girder assembling jig frame and the linear measurement of the lower chord are carried out. The measurement accuracy of the steel truss girder assembling control network is high, the assembling longitudinal axis of the steel truss girder is coincident with the X axis in the control network, the linear measurement data of the steel truss girder can visually reflect the linear change condition, the assembling jig frame measurement and the linear measurement of the upper chord and the lower chord of the steel truss girder are completed in the steel girder assembling control network frame, the three measurement standards are unified, and the relative structural relation of the corresponding nodes of the upper chord and the lower chord of the steel truss girder can be more accurately reflected. In the process of assembling the steel truss girder, stations are newly built in the steel girder assembling control net framework in each measurement, and the coordinates of the survey stations can be obtained at any time by adopting a rear intersection method, so that the error of measurement data caused by the displacement of the observation platform is avoided.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A linear control method for assembling a steel truss girder is characterized by comprising the following steps:
setting a starting point and an end point of an initial longitudinal axis of the steel truss girder to be assembled, and setting four visible control points around the position to be assembled of the steel truss girder by taking the initial longitudinal axis as a reference;
setting an observation platform on an extension line of the initial longitudinal axis at a first set distance from the starting point, erecting a total station, sequentially observing the four control points to obtain plane coordinates of the four control points, and establishing a steel truss girder splicing control network;
observing the four control points in sequence to obtain plane coordinates of the four control points, and the method comprises the following steps: the total station takes the end point as a rear view point, takes the total station to the end point as the initial direction of the lead measurement, and sets an initial coordinate azimuth angle; observing the control points in sequence according to the technical requirements of measuring the four equal conducting wires to form a closed conducting wire, and calculating plane coordinates of the four points through strict adjustment;
assembling the steel truss girders, determining the coordinates of the observation platform based on the steel truss girder assembling control network when each steel truss girder segment is assembled, and then measuring the linear shape and the lower chord linear shape of the steel truss girder assembling jig frame.
2. The steel truss girder splicing line shape control method according to claim 1, characterized in that: when each steel truss section is assembled, after steel truss assembly jig frame linear measurement and lower chord linear measurement are carried out, the total station is erected to the top surface of the upper chord of the steel truss, coordinates of the total station are determined based on a steel truss assembly control network, and then the upper chord linear measurement of the steel truss is carried out.
3. The steel truss girder splicing alignment control method of claim 1, wherein: when each steel truss girder segment is assembled, after the coordinates of the observation platform are determined based on the steel truss girder assembling control network, the linear measurement of the steel truss girder assembling jig frame and the linear measurement of the lower chord are carried out, and the method specifically comprises the following steps:
erecting a total station to an observation platform, and determining the coordinates of the observation platform by adopting a rear intersection method in a steel truss beam assembly control network;
adjusting the total station to an initial coordinate azimuth angle, and determining an assembling longitudinal axis of the assembled steel truss girder;
and performing linear measurement of the steel truss girder assembly jig frame and linear measurement of the lower chord by using a total station.
4. The steel truss girder splicing alignment control method of claim 1, wherein: when the steel truss girder to be assembled is a double-truss steel truss girder, the initial longitudinal axis is the central line of the double-truss steel truss girder; when the steel truss girder to be assembled is a three-truss steel truss girder, the initial longitudinal axis is the central line of the truss node when the three-truss steel truss girder is adopted.
5. The steel truss girder splicing alignment control method of claim 4, wherein:
when the steel truss girder to be assembled is a double-truss steel truss girder, directly determining the coordinates of the observation platform based on the steel truss girder assembling control network;
and when the steel trussed girder to be assembled is a three-truss steel trussed girder, transversely translating the observation platform to a second set distance, and determining the coordinates of the observation platform based on the steel trussed girder assembling control network.
6. The steel truss girder splicing alignment control method of claim 1, wherein: the observation platform adopts a steel pipe pile stable foundation, and the control point adopts a forced centering observation device.
7. The steel truss girder splicing alignment control method of claim 1, wherein: the first set distance is 20-30m.
8. The steel truss girder splicing alignment control method of claim 1, wherein: and the sight of the total station arranged on the observation platform exceeds the top surface of the lower chord of the steel truss girder to be assembled by 1-3m.
9. The steel truss girder splicing alignment control method of claim 1, wherein: the four control points are spaced 2-3 times the distance between the beginning and end points of the initial longitudinal axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017957.7A CN112900266B (en) | 2021-01-07 | 2021-01-07 | Steel truss girder splicing linear control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017957.7A CN112900266B (en) | 2021-01-07 | 2021-01-07 | Steel truss girder splicing linear control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112900266A CN112900266A (en) | 2021-06-04 |
| CN112900266B true CN112900266B (en) | 2022-12-27 |
Family
ID=76112142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110017957.7A Active CN112900266B (en) | 2021-01-07 | 2021-01-07 | Steel truss girder splicing linear control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112900266B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309014A (en) * | 2021-07-05 | 2021-08-27 | 隆芳芬 | Automatic hanging basket positioning and construction method based on Windows system and total station |
| TWI780836B (en) * | 2021-07-26 | 2022-10-11 | 建國工程股份有限公司 | Construction measurement method |
| CN113789729A (en) * | 2021-10-13 | 2021-12-14 | 南通华川交通装备有限责任公司 | Road and bridge steel box girder assembling construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436579A (en) * | 2016-08-25 | 2017-02-22 | 中铁二十三局集团轨道交通工程有限公司 | Linear control method and linear control device for sectional beam with specially-shaped cross section through short-line pedestal matching method |
| CN108914782A (en) * | 2018-08-08 | 2018-11-30 | 江苏中铁山桥重工有限公司 | A kind of large size open web type highway steel box girder stayed-cable bridge manufacturing method |
| CN109653098A (en) * | 2018-09-28 | 2019-04-19 | 江苏中铁山桥重工有限公司 | A kind of nothing left dimension box girder assembling method |
| CN109702364A (en) * | 2018-09-28 | 2019-05-03 | 江苏中铁山桥重工有限公司 | A kind of ultra-wide steel box-girder transverse multi-section division assembling method |
| CN110373988A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The big segment steel truss girder and manufacturing technology of a kind of band pair purlin |
| CN111254835A (en) * | 2020-02-18 | 2020-06-09 | 中交路桥建设有限公司 | Continuous matching construction method for steel box girder segments in factory |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252210A (en) * | 2018-04-09 | 2018-07-06 | 长沙理工大学 | Subsection cast-in-situ UHPC bridge beam section connectors and its construction method |
-
2021
- 2021-01-07 CN CN202110017957.7A patent/CN112900266B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106436579A (en) * | 2016-08-25 | 2017-02-22 | 中铁二十三局集团轨道交通工程有限公司 | Linear control method and linear control device for sectional beam with specially-shaped cross section through short-line pedestal matching method |
| CN108914782A (en) * | 2018-08-08 | 2018-11-30 | 江苏中铁山桥重工有限公司 | A kind of large size open web type highway steel box girder stayed-cable bridge manufacturing method |
| CN109653098A (en) * | 2018-09-28 | 2019-04-19 | 江苏中铁山桥重工有限公司 | A kind of nothing left dimension box girder assembling method |
| CN109702364A (en) * | 2018-09-28 | 2019-05-03 | 江苏中铁山桥重工有限公司 | A kind of ultra-wide steel box-girder transverse multi-section division assembling method |
| CN110373988A (en) * | 2019-07-22 | 2019-10-25 | 中铁大桥局集团有限公司 | The big segment steel truss girder and manufacturing technology of a kind of band pair purlin |
| CN111254835A (en) * | 2020-02-18 | 2020-06-09 | 中交路桥建设有限公司 | Continuous matching construction method for steel box girder segments in factory |
Non-Patent Citations (2)
| Title |
|---|
| 南京长江三桥钢索塔施工测量技术;陈光保等;《公路交通科技》;20080915(第09期);第47-51页 * |
| 平潭海峡公铁两用大桥元洪航道桥钢锚梁精确测量定位技术;赵家仁;《世界桥梁》;20181128;第46卷(第06期);第31-35页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112900266A (en) | 2021-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112900266B (en) | Steel truss girder splicing linear control method | |
| CN109680615B (en) | Three-dimensional coordinate measuring construction method of short-line method section beam | |
| CN108914782A (en) | A kind of large size open web type highway steel box girder stayed-cable bridge manufacturing method | |
| CN111926705A (en) | Method for integrally assembling ultra-wide framing steel box girder | |
| CN109702364A (en) | A kind of ultra-wide steel box-girder transverse multi-section division assembling method | |
| CN111021253A (en) | Construction method for automatically positioning tunnel anchor anchoring system based on APP system and total station | |
| CN111254835A (en) | Continuous matching construction method for steel box girder segments in factory | |
| CN110030967B (en) | Method, device and system for monitoring horizontal deformation of support | |
| CN110241735B (en) | Positioning and adjusting device and method for main tower cable guide pipe of cable-stayed bridge | |
| CN102493296B (en) | Method for measuring longspan steel truss girder rail control network | |
| CN210507148U (en) | Positioning and adjusting device for main tower cable guide pipe of cable-stayed bridge | |
| CN112900265B (en) | Continuous steel beam installation line shape control method | |
| CN114964189A (en) | Mounting and measuring method for supporting jig frame and truss | |
| CN210622423U (en) | Welded connection's hard crossbeam of contact net | |
| CN110685306B (en) | Positioning and measuring method for Y-shaped steel structural column of subway open-cut station | |
| CN114319121A (en) | Long and large steel box girder segment linear control method | |
| CN112411387A (en) | Lofting method of continuous steel beam pier support | |
| CN111945564A (en) | Construction method and construction system for jacking frame bridge | |
| CN220170140U (en) | Shaping and measuring device for subway tunnel support | |
| CN111794731B (en) | Large-inclination long inclined shaft control measurement method | |
| CN108358077A (en) | A kind of installation method of irregular arm shelf | |
| CN116989753A (en) | Measurement control method using original equipment center as measurement reference | |
| CN116607415A (en) | Sectional installation method of inner concrete outer steel bridge tower | |
| CN204831270U (en) | Measure measuring tool of interior Z type pipeline dihedral angle of antarafacial | |
| CN111827126A (en) | Method for lofting side line of railway slag wall during erection of steel beam of cable-stayed bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |