CN113550598A - Correction method for sectional installation of large-span steel truss - Google Patents
Correction method for sectional installation of large-span steel truss Download PDFInfo
- Publication number
- CN113550598A CN113550598A CN202110787404.XA CN202110787404A CN113550598A CN 113550598 A CN113550598 A CN 113550598A CN 202110787404 A CN202110787404 A CN 202110787404A CN 113550598 A CN113550598 A CN 113550598A
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- CN
- China
- Prior art keywords
- steel truss
- support
- tower crane
- coordinates
- sliding support
- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/342—Structures covering a large free area, whether open-sided or not, e.g. hangars, halls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to the field of steel structures, in particular to a correction method for sectional installation of a large-span steel truss. The method comprises the following steps: after the steel truss is assembled on the ground, the upper chord and the lower chord are respectively provided with a light reflecting sheet, and theoretical coordinates of a measuring point relative to the designed installation position of the light reflecting sheet are derived; a one-way sliding support is fixedly connected to the top of the tower crane section support; hoisting one end of the steel truss in place, placing the longitudinal axis position on a one-way sliding support at the top of a tower crane section support, enabling the steel truss to rotate in the horizontal direction by using a sliding rope by constructors, correcting actual position coordinates of upper and lower chord light reflecting sheets of the steel truss by using a total station until the actual position coordinates are consistent with theoretical coordinates of a designed installation position, and welding and reinforcing the steel truss. By adopting the invention, the construction of ascending a height is not needed, and the precision and the high efficiency construction are ensured by adopting the coordinate measurement of the total station.
Description
Technical Field
The invention relates to the field of steel structures, in particular to a correction method for sectional installation of a large-span steel truss.
Background
The large-span steel truss cannot be integrally hoisted, and each section of steel truss during sectional installation cannot ensure that the butt joint interfaces are on the same straight line after the installation is finished. The traditional method for drawing straight lines at two ends of a large-span steel truss cannot accurately realize perfect butt joint between every two sections of steel trusses and integral flatness after the butt joint is completed.
Disclosure of Invention
The invention aims to solve the problems, and provides a correction method for sectional installation of a large-span steel truss.
The invention solves the problems and adopts the technical scheme that:
a correction method for sectional installation of a large-span steel truss comprises the following steps:
and 4, hoisting one end of the steel truss 4 in place, placing the longitudinal axis on a one-way sliding support 6 at the top of a tower crane joint support 7, rotating the steel truss 4 in the horizontal direction under the action of the one-way sliding support 6 by using a sliding rope 3 by constructors, finely adjusting the steel truss 4, correcting actual position coordinates of upper and lower chord reflectors 5 of the steel truss 4 one by using a total station 8 until the actual position coordinates are consistent with theoretical coordinates of a designed installation position, and welding and reinforcing the steel truss 4.
Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:
the safety of constructors is guaranteed without the need of ascending a height for construction.
And secondly, the coordinate measurement of the total station is adopted, so that the precision is ensured, and the construction can be carried out efficiently.
Drawings
FIG. 1 is a schematic diagram of an overall calibration according to an embodiment of the present invention;
FIG. 2 is a schematic view of a reflector according to an embodiment of the present invention;
FIG. 3 is a schematic view of a unidirectional sliding support according to an embodiment of the present invention;
in the figure: measuring point 1; the upper chord and the lower chord of the steel truss are 2; a sliding rope 3; a steel truss 4; a light-reflecting sheet 5; a one-way sliding support 6; a tower crane section support 7; a total station 8.
The specific implementation mode is as follows:
the invention will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the invention.
Referring to fig. 1 to 3, a correction method for sectional installation of a large-span steel truss is performed according to the following steps:
and 4, hoisting one end of the steel truss 4 in place, placing the longitudinal axis on a one-way sliding support 6 at the top of a tower crane joint support 7, rotating the steel truss 4 in the horizontal direction under the action of the one-way sliding support 6 by using a sliding rope 3 by constructors, finely adjusting the steel truss 4, correcting actual position coordinates of upper and lower chord reflectors 5 of the steel truss 4 one by using a total station 8 until the actual position coordinates are consistent with theoretical coordinates of a designed installation position, and welding and reinforcing the steel truss 4.
Compared with the prior common method that the two ends of each steel truss are straightened or the constructors stand on the hoisted steel truss by holding the reflective sheets, the method has the following characteristics:
firstly, before the large-span steel truss is unfixed, constructors cannot stand on the hoisted objects, and further the safety of the constructors cannot be ensured. The invention does not need personnel to ascend construction, thereby ensuring the safety of constructors.
Secondly, the traditional method for drawing straight lines at two ends of the large-span steel truss cannot accurately realize perfect butt joint between each section of steel truss and integral flatness after the butt joint is finished. The invention adopts the coordinate measurement of the total station, ensures the precision and carries out the construction with high efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.
Claims (1)
1. A correction method for sectional installation of a large-span steel truss is characterized by comprising the following steps:
step 1, after the steel truss 4 is assembled on the ground, respectively placing reflectors 5 on the upper chord 2 and the lower chord 2 of the steel truss, and deriving a theoretical coordinate of a measuring point 1 relative to a designed installation position of the reflectors 5 on the steel truss 4;
step 2, fixedly connecting the bottom of the unidirectional sliding support 6 to the top 7 of the tower crane section support;
step 3, arranging a tower crane joint support 7 at the longitudinal axis position of the designed installation position of the steel truss 4, wherein the sliding direction of the one-way sliding support 6 is consistent with the horizontal rotating direction of the steel truss 4;
and 4, hoisting one end of the steel truss 4 in place, placing the longitudinal axis on a one-way sliding support 6 at the top of a tower crane joint support 7, rotating the steel truss 4 in the horizontal direction under the action of the one-way sliding support 6 by using a sliding rope 3 by constructors, finely adjusting the steel truss 4, correcting actual position coordinates of upper and lower chord reflectors 5 of the steel truss 4 one by using a total station 8 until the actual position coordinates are consistent with theoretical coordinates of a designed installation position, and welding and reinforcing the steel truss 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787404.XA CN113550598A (en) | 2021-07-13 | 2021-07-13 | Correction method for sectional installation of large-span steel truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110787404.XA CN113550598A (en) | 2021-07-13 | 2021-07-13 | Correction method for sectional installation of large-span steel truss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113550598A true CN113550598A (en) | 2021-10-26 |
Family
ID=78131645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110787404.XA Withdrawn CN113550598A (en) | 2021-07-13 | 2021-07-13 | Correction method for sectional installation of large-span steel truss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113550598A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019665A (en) * | 2015-07-20 | 2015-11-04 | 中国二十二冶集团有限公司 | Method for mounting long-span structure beam based on total station |
| CN108842954A (en) * | 2018-05-29 | 2018-11-20 | 中国建筑第二工程局有限公司 | Installation and construction method of huge different-section honeycomb beam structure system of wing-shaped roof |
| CN109488029A (en) * | 2018-11-07 | 2019-03-19 | 中建三局第建设工程有限责任公司 | The construction method of the whole Pin lifting of return air passageway steel construction |
| CN111139749A (en) * | 2020-01-08 | 2020-05-12 | 中铁四局集团有限公司 | Large-span bearing type continuous steel truss girder cantilever erection construction method |
| CN112609583A (en) * | 2020-12-17 | 2021-04-06 | 安徽省路桥工程集团有限责任公司 | Steel box tied arch bridge steel structure construction system and construction method |
| WO2021128161A1 (en) * | 2019-12-26 | 2021-07-01 | 广州建筑股份有限公司 | Method and apparatus for integrated and elevated construction of arched structure |
-
2021
- 2021-07-13 CN CN202110787404.XA patent/CN113550598A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019665A (en) * | 2015-07-20 | 2015-11-04 | 中国二十二冶集团有限公司 | Method for mounting long-span structure beam based on total station |
| CN108842954A (en) * | 2018-05-29 | 2018-11-20 | 中国建筑第二工程局有限公司 | Installation and construction method of huge different-section honeycomb beam structure system of wing-shaped roof |
| CN109488029A (en) * | 2018-11-07 | 2019-03-19 | 中建三局第建设工程有限责任公司 | The construction method of the whole Pin lifting of return air passageway steel construction |
| WO2021128161A1 (en) * | 2019-12-26 | 2021-07-01 | 广州建筑股份有限公司 | Method and apparatus for integrated and elevated construction of arched structure |
| CN111139749A (en) * | 2020-01-08 | 2020-05-12 | 中铁四局集团有限公司 | Large-span bearing type continuous steel truss girder cantilever erection construction method |
| CN112609583A (en) * | 2020-12-17 | 2021-04-06 | 安徽省路桥工程集团有限责任公司 | Steel box tied arch bridge steel structure construction system and construction method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211026 |