CN114108811B - Unsupported installation method of super high-rise conversion truss - Google Patents
Unsupported installation method of super high-rise conversion truss Download PDFInfo
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- CN114108811B CN114108811B CN202111442773.1A CN202111442773A CN114108811B CN 114108811 B CN114108811 B CN 114108811B CN 202111442773 A CN202111442773 A CN 202111442773A CN 114108811 B CN114108811 B CN 114108811B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 73
- 238000009434 installation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
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- 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
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
- E04B2001/1993—Details of framework supporting structure, e.g. posts or walls
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a method for mounting an ultra-high-rise conversion truss without support, which comprises the following steps: s1, installing steel columns on two sides; s2, arranging a counterweight platform on the outer sides of the steel columns on the two sides, wherein the outer sides are the sides of the steel columns, which are away from each other. S3, erecting a conversion truss on the inner sides of the steel columns on the two sides by using a cantilever, and hoisting a counterweight to the counterweight platform in the erecting process until the conversion trusses on the steel columns on the two sides are closed; s4, detaching the balance weight and the balance weight platform. The invention enables the conversion truss to be suitable for installation under complex installation conditions and has certain safety.
Description
Technical Field
The invention relates to a truss installation method, in particular to a support-free installation method of an ultra-high-rise conversion truss.
Background
The steel structure conversion truss is a novel conversion structure form, and the steel structure conversion truss has the advantages of uniform stress, good anti-seismic performance, high steel strength, light weight, high construction speed, economy, practicability, environment friendliness and the like, and can meet larger space requirements. Steel structure conversion trusses are widely used in some modern large-scale construction projects.
In the prior art, the conversion truss is usually installed in situ at high altitude, namely, a temporary supporting structure is erected below the truss, the conversion truss is hoisted in sections by using hoisting equipment, and the temporary supporting structure is removed after hoisting and welding are completed. For the conversion truss of the super high-rise building, a large number of temporary supporting structures are required to be erected, the cost of materials for erection is high, and the workload of erection is high; the construction method is only suitable for the condition that enough space and conditions exist below the truss to set up the temporary support structure, and is not suitable for the condition that the temporary support structure is unconditionally set up below the truss, so that the construction method has limitation.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the unsupported installation method of the super high-rise conversion truss, which can build the conversion truss under the condition of insufficient space below the conversion truss.
According to the embodiment of the invention, the unsupported installation method of the super high-rise conversion truss comprises the following steps:
s1, installing steel columns on two sides;
s2, arranging a counterweight platform on the outer sides of the steel columns on the two sides, wherein the outer sides are the sides of the steel columns, which are away from each other.
S3, erecting a conversion truss on the inner sides of the steel columns on the two sides by using a cantilever, and hoisting a counterweight to the counterweight platform in the erecting process until the conversion trusses on the steel columns on the two sides are closed;
s4, detaching the balance weight and the balance weight platform.
The unsupported installation method of the super high-rise conversion truss provided by the embodiment of the invention has at least the following technical effects: the cantilever is adopted to set up the conversion truss, so that a temporary supporting structure is prevented from being set up under the conversion truss; the conversion truss that the steel column outside set up can produce moment of flexure to the steel column, in order to guarantee the security of steel column in the cantilever work progress, hoist and mount the counter weight of corresponding weight on the counter weight platform when the conversion truss of certain weight is installed in every for the atress of steel column both sides is balanced, ensures that conversion truss and counter weight are close to zero to the moment of flexure and the moment of flexure on steel column top, reduces the steel column deformation, avoids the steel column to take place the slope. The invention enables the conversion truss to be suitable for installation under complex installation conditions and has certain safety.
According to some embodiments of the invention, in S3, a counterweight adapted thereto is hoisted according to the weight of the erected conversion truss.
According to some embodiments of the invention, the conversion truss comprises a folding section and a plurality of lower chords, diagonal web members, straight web members and upper chords; while setting up the first lower chord member of the conversion truss, hoisting a counterweight matched with the counterweight platform; while erecting a first inclined web member, adding an adapted counterweight on the counterweight platform; while erecting the first straight web member, adding an adapted counterweight on the counterweight platform; while setting up the first upper chord member, adding an adapted counterweight on the counterweight platform; and so on, building up the part of the conversion truss except for the folding sections.
According to some embodiments of the invention, two ends of the closure segment are connected with the conversion trusses on the steel columns on both sides.
According to some embodiments of the invention, before S1, when the conversion truss is prepared in a factory, the conversion truss is pre-spliced, and then transported to a construction site after meeting the requirements.
According to some embodiments of the invention, the installation locations of the counterweight platform and the conversion truss are located at the same height of the steel column.
According to some embodiments of the invention, in S2, a support frame is assembled by steel sections on the ground in the field, then a support plate is welded on the support frame, and the support frame and the support plate form the counterweight platform and are then mounted on the steel column.
According to some embodiments of the invention, in S1, the installation position of the steel column is first confirmed, the verticality of the steel column is adjusted after the steel column is hoisted in place, and then concrete is poured on the bottom of the steel column.
According to some embodiments of the invention, the steel column is provided with a double clamping plate, and the counterweight platform is connected to the double clamping plate through bolt fastening after being matched with the double clamping plate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of a method for unsupported installation of a super high-rise conversion truss of the present invention with a counterweight platform set up;
FIG. 2 is a schematic illustration of a first bottom chord set up in the implementation of the method of unsupported installation of a super high-rise conversion truss of the present invention;
FIG. 3 is a schematic view of a first diagonal web member erected during the implementation of the method for unsupported installation of a super high-rise conversion truss of the present invention;
FIG. 4 is a schematic view of a first web member set up in the implementation of the method of unsupported installation of a super high-rise conversion truss of the invention;
FIG. 5 is a schematic illustration of the erection of a first upper chord during the practice of the method of unsupported installation of a super high rise conversion truss of the present invention;
FIG. 6 is a schematic diagram of the completion of erection of the conversion truss at the time of implementation of the method for unsupported installation of the super high-rise conversion truss of the present invention;
FIG. 7 is a schematic illustration of the super high-rise conversion truss unsupported installation method of the invention after the implementation of the method for unloading weights and removing the weight platform;
reference numerals: 101. a steel column; 102. converting the truss; 103. a counterweight platform; 104. a counterweight; 105. a first bottom chord; 106. a first diagonal web member; 107. a first straight web member; 108. a first upper chord; 109. double clamping plates.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 7, an embodiment of the present invention provides a method for supportless installation of a super high-rise conversion truss, comprising:
s1, installing steel columns 101 on two sides;
s2, arranging a counterweight platform 103 on the outer sides of the steel columns 101 on the two sides, wherein the outer sides are the sides of the steel columns 101, which are away from each other.
S3, erecting a conversion truss 102 on the inner sides of the steel columns 101 on the two sides by using cantilevers, and hoisting a counterweight 104 on the counterweight platform 103 in the erecting process until the conversion trusses 102 on the steel columns 101 on the two sides are closed;
and S4, detaching the counterweight 104 and the counterweight platform 103.
The unsupported installation method of the super high-rise conversion truss provided by the embodiment of the invention has at least the following technical effects: the cantilever is adopted to set up the conversion truss 102, so that a temporary supporting structure is prevented from being set up under the conversion truss 102; the conversion truss 102 arranged on the outer side of the steel column 101 can generate bending moment on the steel column 101, in order to ensure the safety of the steel column 101 in the cantilever construction process, the counterweight 104 with corresponding weight is hoisted on the counterweight platform 103 when the conversion truss 102 with certain weight is installed, so that the stress on two sides of the steel column 101 is balanced, the bending moment of the conversion truss 102 and the counterweight 104 on the top end of the steel column 101 is ensured to be close to zero, the deformation of the steel column 101 is reduced, and the steel column 101 is prevented from tilting. The invention enables the conversion truss 102 to be suitable for installation under complex installation conditions and has certain safety.
In some embodiments of the present invention, the counterweight 104 adapted thereto is hoisted according to the weight of the erected conversion truss 102 in S3.
In some embodiments of the present invention, transition truss 102 includes a closed section and several lower chords 105, diagonal web members 106, straight web members 107, upper chords 108; while the first lower chord 105 of the conversion truss 102 is erected, a counterweight 104 matched with the counterweight platform 103 is hoisted; while setting up the first diagonal web member 106, adding an adapted weight 104 to the weight platform 103; while erecting the first straight web member 107, adding an adapted weight 104 on the weight platform 103; while setting up the first upper chord 108, adding an adapted counterweight 104 to the counterweight platform 103; similarly, the transition truss 102 is erected except for the closed sections. Referring to fig. 2-5, the installation process of the conversion truss 102 can be intuitively understood.
In some embodiments of the present invention, both ends of the closed section are connected with the conversion trusses 102 on the steel columns 101 on both sides.
In some embodiments of the present invention, prior to S1, when the conversion truss 102 is prepared at the factory, the conversion truss 102 is pre-spliced and transported to the construction site after meeting the requirements. It will be appreciated that pre-splicing ensures that the site splicing of the conversion trusses 102 can be performed smoothly.
In some embodiments of the present invention, the mounting locations of the counterweight platform 103 and the conversion truss 102 are located at the same height of the steel column 101.
In some embodiments of the present invention, in S2, the support frame is assembled from the section steel on the ground in the field, then the support plate is welded to the support frame, and the support frame and the support plate form the counterweight platform 103 and are then mounted to the steel column 101.
In some embodiments of the present invention, in S1, the installation position of the steel column 101 is first confirmed, the verticality of the steel column 101 is adjusted after the steel column 101 is hoisted in place, and then concrete is poured into the bottom of the steel column 101.
In some embodiments of the present invention, the steel column 101 is provided with a double clamping plate 109, and the counterweight platform 103 is coupled to the double clamping plate 109 by fastening bolts after being matched with the double clamping plate 109.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The unsupported installation method of the super high-rise conversion truss is characterized by comprising the following steps of:
s1, installing steel columns on two sides;
s2, arranging a counterweight platform on the outer sides of the steel columns on two sides;
s3, erecting a conversion truss on the inner sides of the steel columns on the two sides by using a cantilever, hoisting a counterweight on the counterweight platform in the erecting process, hoisting the counterweight matched with the conversion truss according to the weight of the erected conversion truss until the conversion truss on the steel columns on the two sides is folded, wherein the conversion truss comprises a folding section, a plurality of lower chords, inclined web members, straight web members and upper chords; while setting up the first lower chord member of the conversion truss, hoisting a counterweight matched with the counterweight platform; while erecting a first inclined web member, adding an adapted counterweight on the counterweight platform; while erecting the first straight web member, adding an adapted counterweight on the counterweight platform; while setting up the first upper chord member, adding an adapted counterweight on the counterweight platform; and so on, building up the part of the conversion truss except for the folding section;
s4, detaching the balance weight and the balance weight platform.
2. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: and connecting the two ends of the folding section with the conversion trusses on the steel columns at the two sides.
3. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: before S1, when the conversion truss is prepared in a factory, the conversion truss is pre-spliced, and is transported to a construction site after meeting the requirements.
4. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: the installation positions of the counterweight platform and the conversion truss are located on the same height of the steel column.
5. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: in S2, firstly, a supporting frame is assembled on the ground of the site by using section steel, then a supporting plate is welded on the supporting frame, and the supporting frame and the supporting plate form the counterweight platform and are then mounted on the steel column.
6. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: in S1, firstly confirming the installation position of the steel column, hoisting the steel column in place, then adjusting the verticality of the steel column, and then pouring concrete to the bottom of the steel column.
7. The method for unsupported installation of a super high-rise transition truss of claim 1 wherein: and the steel column is provided with a double clamping plate, and the counterweight platform is matched with the double clamping plate and then is connected to the double clamping plate through bolt fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111442773.1A CN114108811B (en) | 2021-11-30 | 2021-11-30 | Unsupported installation method of super high-rise conversion truss |
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| CN202111442773.1A CN114108811B (en) | 2021-11-30 | 2021-11-30 | Unsupported installation method of super high-rise conversion truss |
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| CN114108811A CN114108811A (en) | 2022-03-01 |
| CN114108811B true CN114108811B (en) | 2023-07-11 |
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| CN114439249B (en) * | 2022-04-07 | 2022-06-21 | 中铁建工集团有限公司 | Construction method for lifting large-span triangular truss through air swivel |
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| CN100528731C (en) * | 2008-04-29 | 2009-08-19 | 中国中铁股份有限公司 | Wharf crane and construction method |
| CN105421248B (en) * | 2015-12-31 | 2018-01-30 | 中铁二十局集团第一工程有限公司 | Large-Span Continuous girder span building up station turns and closure construction method |
| CN105888227B (en) * | 2016-06-16 | 2017-06-23 | 中建七局建筑装饰工程有限公司 | Superelevation is tubaeform steel structure exterior finish operation platform and its building method |
| CN106758868A (en) * | 2016-12-18 | 2017-05-31 | 中铁二十局集团第五工程有限公司 | End bay cast-in-place section construction structure and construction method based on Hanging Basket Yu truss-like nose girder |
| CN107119574B (en) * | 2017-06-27 | 2018-08-21 | 中交第三航务工程局有限公司 | A kind of Cantilever Construction Method of arch rib bridge girder |
| CN111395180A (en) * | 2020-03-27 | 2020-07-10 | 中交二公局东萌工程有限公司 | Continuous rigid frame bridge side span cast-in-place section and closure section suspension type construction method |
| CN111945891B (en) * | 2020-07-25 | 2022-01-18 | 北京城建二建设工程有限公司 | Ring truss high-altitude in-situ splicing construction method |
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Address after: No.1908, Zhongtian Meijing building, No.2009, Pingshan Avenue, Liulian community, Pingshan street, Pingshan District, Shenzhen, Guangdong 518000 Patentee after: China Construction Steel Structure Co.,Ltd. Address before: No.1908, Zhongtian Meijing building, No.2009, Pingshan Avenue, Liulian community, Pingshan street, Pingshan District, Shenzhen, Guangdong 518000 Patentee before: China Construction Steel Engineering Co.,Ltd. |