CN112459249A - Construction method of steel structure of super high-rise transfer floor - Google Patents
Construction method of steel structure of super high-rise transfer floor Download PDFInfo
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- CN112459249A CN112459249A CN202011279795.6A CN202011279795A CN112459249A CN 112459249 A CN112459249 A CN 112459249A CN 202011279795 A CN202011279795 A CN 202011279795A CN 112459249 A CN112459249 A CN 112459249A
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- steel structure
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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
- E04B1/34—Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2220/00—Temporary installations or constructions
Abstract
The invention provides a method for building a steel structure of a super high-rise transfer layer, which is used for arranging the steel structure of the transfer layer on a plurality of giant columns, wherein the plurality of giant columns are arranged around a core cylinder, and the method comprises the following steps: building a BIM model of a conversion layer steel structure, wherein the conversion layer steel structure comprises an upper layer steel structure and a lower layer steel structure, and determining component sections of the upper layer steel structure and the lower layer steel structure; a plurality of temporary supports are arranged along the circumferential direction of the core barrel and are positioned on a top plate of the basement; hoisting the components of the lower-layer steel structure and connecting the components into a whole, wherein the lower-layer steel structure is placed on the temporary support and is connected with the temporary support structure and the core barrel; the components of the upper steel structure are hoisted and connected into a whole, and the upper steel structure, the giant column, the lower steel structure and the core barrel are respectively connected. Through hoisting the upper steel structure and the lower steel structure in sections and then connecting the upper steel structure and the lower steel structure into a whole, the model selection problem of hoisting mechanical equipment in the conversion layer structure is solved, and the problems of excessive construction mechanical performance and unnecessary cost waste are avoided.
Description
Technical Field
The invention relates to the technical field of steel structure construction, in particular to a construction method of a steel structure of a super high-rise transfer floor.
Background
With the development of the building industry, the demand of the super high-rise building for large space is increased, and in order to create the building effect of the large space, the structure form that the large column is converted into the outer frame structure appears in the conversion layer structure, so that the load of the outer frame structure is transmitted to the large column through the conversion layer structure and is effectively transmitted to the ground through the large column. The structural members of the conversion layer are complicated in arrangement, the node members are complicated in combination, and the member size is large.
Ultra-wide, ultra-high and ultra-heavy steel components in a transfer floor structure are generally installed by the following two methods: the method comprises the steps that firstly, a heavy tower crane is installed to meet the hoisting requirements of the members, but the construction of the transfer floor structure only occupies a very small part in the whole construction period of the building structure, and the heavy tower crane is only installed for the transfer floor structure, so that the construction mechanical performance in other construction stages is excessive, and unnecessary cost is wasted; and a large truck crane or crawler crane is selected, and the construction period is easily influenced because the large truck crane or crawler crane needs to be constructed on the trestle plate, and meanwhile, a large amount of supports are also needed, so that unnecessary cost is wasted.
Disclosure of Invention
The invention aims to provide a construction method of a steel structure of a super-high transfer floor, which solves the problem of model selection of hoisting mechanical equipment for super-wide, super-high and super-heavy components in the structure of the transfer floor and avoids the problems of excessive construction mechanical performance and unnecessary cost waste.
In order to achieve the above objects, the present invention provides a method for constructing a super high-rise transfer floor steel structure for installing a transfer floor steel structure on a plurality of giant columns which are installed around a core tube, comprising:
building a BIM model of the conversion layer steel structure, wherein the conversion layer steel structure comprises an upper layer steel structure and a lower layer steel structure, the upper layer steel structure is positioned right above the lower layer steel structure, and the member segmentation of the upper layer steel structure and the lower layer steel structure is determined;
a plurality of temporary supports are arranged along the circumferential direction of the core barrel and are positioned on a top plate of the basement;
sequentially hoisting the components of the lower-layer steel structure and connecting the components into a whole, wherein the lower-layer steel structure is placed on the temporary support and is connected with the temporary support structure and the core barrel;
and sequentially hoisting the components of the upper-layer steel structure, connecting the components into a whole, and respectively connecting the upper-layer steel structure with the giant column, the lower-layer steel structure and the core barrel.
Optionally, a truck crane is selected to hoist the members of the upper-layer steel structure and the lower-layer steel structure, and the truck crane runs on a top plate of the basement.
Optionally, a roadbed box is laid on the top plate of the basement.
Optionally, the height difference between the roadbed box and the top plate of the basement is transferred by a wedge-shaped block.
Optionally, before the plurality of temporary supports are arranged in the circumferential direction of the core barrel, the method for constructing the steel structure of the super high-rise transfer layer further includes: and adding a herringbone strut below the concrete beam of the basement to reinforce the basement.
Optionally, the bottom of the temporary support is arranged on the top plate of the basement through a bottom transfer beam.
Optionally, after the plurality of temporary supports are arranged in the circumferential direction of the core barrel, the method for constructing the steel structure of the super high-rise transfer layer further includes: and arranging a top conversion beam on the top of each temporary support, arranging two parallel rigid supports above the top conversion beam, and enabling the lower-layer steel structure to rest on the rigid supports.
Optionally, after a top transfer beam is disposed on top of each temporary support and two parallel rigid supports are disposed above the top transfer beam, the method for constructing a super high-rise transfer layer steel structure further includes: and a constant-force jack is arranged between the two rigid supports.
Optionally, the upper steel structure and the giant column are welded through an umbrella-shaped steel structure.
Optionally, the temporary support is formed by assembling a plurality of tower crane standard sections.
The invention provides a construction method of a steel structure of a super high-rise transfer floor, which is characterized in that an upper-layer steel structure and a lower-layer steel structure are hoisted in a segmented manner and then are connected into a whole, so that the problem of type selection of hoisting mechanical equipment for super-wide, super-high and super-heavy components in the structure of the transfer floor is solved, and the excessive construction mechanical performance and the unnecessary cost waste are avoided. In addition, utilize the support of interim support as the conversion floor steel construction, compare in traditional steel pipe support stability better to can directly regard as constructor required vertical passage from top to bottom, reduce setting up of operation scaffold.
Drawings
Fig. 1 is a step diagram of a method for constructing a steel structure of a super high-rise transfer floor according to an embodiment of the present invention;
FIG. 2 is a schematic view of hoisting a lower steel structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of hoisting an upper steel structure according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a lower steel structure according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an upper steel structure according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of basement reinforcement according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a bottom transfer beam according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a top transfer beam according to an embodiment of the present invention;
fig. 9 is an installation schematic diagram of a roadbed box provided by the embodiment of the invention;
wherein the reference numerals are:
10-a giant column; 20-core barrel; 30-lower layer steel structure; 31-a first steel truss structure; 32-a first connecting beam; 40-upper steel structure; 41-a second steel truss structure; 42-umbrella-shaped steel structure; 43-a second connecting beam; 50-temporary branch; 51-bottom transfer beam; 52-top transfer beam; 53-rigid support; 54-constant jack; 60-basement; 61-herringbone bracing; 70-truck crane; 80-roadbed box; 90-wedge-shaped block.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As shown in fig. 1 to 3, the present embodiment provides a method for constructing a super high-rise transfer floor steel structure, which is used for installing a transfer floor steel structure on a plurality of giant columns 10, wherein the plurality of giant columns 10 are arranged around a core barrel 20, and the method comprises:
step S1: building a BIM model of the conversion layer steel structure, wherein the conversion layer steel structure comprises an upper layer steel structure 40 and a lower layer steel structure 30, the upper layer steel structure 40 is positioned right above the lower layer steel structure 30, and component sections of the upper layer steel structure 40 and the lower layer steel structure 30 are determined;
step S2: arranging a plurality of temporary supports 50 along the circumference of the core barrel 20, wherein the temporary supports 50 are positioned on the top plate of the basement 60;
step S3: sequentially hoisting the components of the lower-layer steel structure 30 and connecting the components into a whole, wherein the lower-layer steel structure 30 is placed on the temporary support 50 and is connected with the temporary support 50 and the core barrel 20;
step S4: and sequentially hoisting the components of the upper-layer steel structure 40, connecting the components into a whole, and respectively connecting the upper-layer steel structure 40 with the giant column 10, the lower-layer steel structure 30 and the core barrel 20.
Specifically, before step S1 is executed, a finite element analysis software is used to perform a computer simulation on the structure construction process, and the rationality of the construction process and the stability of the structure are analyzed.
Then, step S1 is executed to establish a BIM model (building information model) of the conversion layer steel structure, which includes the upper layer steel structure 40 and the lower layer steel structure 30. Referring to fig. 2, in the present embodiment, the core barrel 20 is a constructed structure, four giant columns 10 are arranged around the core barrel 20, the giant columns 10 extend upward from the underground layer to the seventh layer, the lower steel structure 30 is arranged on the sixth layer, and the upper steel structure 40 is arranged on the seventh layer.
Then, determining the component segmentation of the upper layer steel structure 40 and the lower layer steel structure 30, as shown in fig. 4 and 5, fig. 4 is a schematic structural view of the lower layer steel structure 30 provided in the embodiment of the present invention, where the lower layer steel structure 30 includes a first steel truss structure 31 and a plurality of first connecting beams 32, the lower layer steel structure 30 is overall square, four vertex angles thereof respectively penetrate through four giant columns 10, the lower layer steel structure 30 is not connected to the giant columns 10, and the first steel truss structure 31 is connected to the core barrel 20 through the first connecting beams 32. Fig. 5 is a schematic structural diagram of an upper steel structure 40 according to an embodiment of the present invention, where the upper steel structure 40 includes a second steel truss structure 41, an umbrella-shaped steel structure 42, and a plurality of second connection beams 43, the upper steel structure 40 is integrally square, the upper steel structure 40 and the large column 10 are welded by the umbrella-shaped steel structure 42, and the steel truss structure is connected to the core barrel 20 by the second connection beams 43. The first steel truss structure 31 and the second steel truss structure 41 are formed by welding a plurality of steel members.
Referring to fig. 6, before performing step S2, the method for constructing a super high-rise transition layer steel structure further includes: a herringbone support 61 is additionally arranged below the concrete beam of the basement 60 to reinforce the basement 60. Because hoisting equipment is needed to be adopted for hoisting and the temporary support 50 needs to be built subsequently, in order to ensure that the structural bearing capacity of the basement 60 meets the requirement when the temporary support 50 system and the hoisting equipment simultaneously act on the top plate of the basement 60, reinforcement measures need to be taken for the basement 60 structure, and the reinforcement measures comprise the steps of adding reinforcing bars on the concrete beam plate and adding the herringbone support 61 below the top plate concrete beam.
Next, step S2 is executed, and a plurality of temporary supports 50 are disposed along the circumferential direction of the core barrel 20, wherein the temporary supports 50 are located on the top plate of the basement 60. In this embodiment, support 50 temporarily and assemble by a plurality of tower crane standard festival and form. Utilize interim support 50 as the support of conversion layer steel construction, compare in traditional steel pipe support stability better to can directly regard as constructor required vertical passage from top to bottom, reduce setting up of operation scaffold.
In this embodiment, referring to fig. 7, the bottom of the temporary support 50 is disposed on the top plate of the basement 60 through a bottom transfer beam 51. It should be appreciated that since there are instances where the position of the temporary support 50 coincides with the post-cast strip, the load may be distributed on site in the form of a steel transfer beam to the concrete main beam adjacent the basement 60.
Referring to fig. 8, after the plurality of temporary supports 50 are provided along the circumferential direction of the core barrel 20, the method for constructing a super high-rise transfer layer steel structure further includes: a top transfer beam 52 is provided on top of each of the temporary supports 50 and two parallel rigid supports 53 are provided above the top transfer beam 52, the underlying steel structure 30 resting on the rigid supports 53. The top transfer beams 52 and rigid supports 53 are provided to better support the transfer layer steel structure.
In this embodiment, after disposing a top transfer beam 52 on top of each temporary support 50 and disposing two parallel rigid supports 53 above the top transfer beam 52, the method for constructing a super high-rise transfer layer steel structure further includes: a constant force jack 54 is provided between the two rigid supports 53. Because the main building can produce the settlement difference during the construction, through adding constant jack 54 at the top of interim support 50 in order to guarantee the counter-force of interim support 50 to be the constant value, avoid leading to the counter-force of interim support 50 to increase because of the main building subsides. In addition, through the constant-force jack 54 at the top of the temporary support 50, the axial force of the temporary support 50 can be monitored in real time, and the automatic control system ensures that the axial force is always in a controllable and adjustable state, so that the safety of a support system and a lower concrete roof structure is ensured. In this embodiment, after the whole hoisting and welding of the steel structure of the conversion layer are completed, the constant-force jack 54 starts to jack, and the load of the steel structure of the conversion layer is transferred to the constant-force jack 54 through the rigid support 53.
Then, step S3 is executed, the components of the lower steel structure 30 are hoisted in sequence and connected into a whole, the lower steel structure 30 is placed on the temporary support 50, and the temporary support 50 is connected with the core barrel 20. In the embodiment, with reference to fig. 2 and 4, the components of the lower steel structure 30 are placed on the rigid support 53 at the top of the temporary support 50, and the components at the four top corners of the lower steel structure 30 are welded and then connected to form an integral steel truss structure, and finally the steel truss structure is connected to the core barrel 20 through the first connecting beam 32, so as to complete the installation of the whole lower steel structure 30.
And finally, executing a step S4, sequentially hoisting the components of the upper steel structure 40, connecting the components into a whole, and respectively connecting the upper steel structure 40 with the giant column 10, the lower steel structure 30 and the core barrel 20. Referring to fig. 3 and 5, in the present embodiment, the hoisting of the upper steel structure 40 is started simultaneously with the welding of the lower steel structure 30. Firstly, umbrella-shaped steel structures 42 connected with the giant columns 10 are installed, then connecting members between the umbrella-shaped steel structures 42 are installed, the upper-layer steel structure 40 and the lower-layer steel structure 30 can be connected through upright columns, and the upper-layer steel structure 40 and the core barrel 20 are connected through the second connecting beams 43.
In this embodiment, a truck crane 70 is selected to hoist the components of the upper deck 40 and the lower deck 30, and the truck crane 70 runs on the top plate of the basement 60 around the core barrel 20. By hoisting and welding the upper steel structure 40 and the lower steel structure 30 in sections, the model selection problem of hoisting mechanical equipment for ultra-wide, ultra-high and ultra-heavy components in the conversion layer structure is solved, and the problems of excessive construction mechanical performance and unnecessary cost waste are avoided.
Referring to fig. 9, since the truck crane 70 needs to travel along the circumference of the core barrel 20 and hoist at a fixed point, in order to avoid the influence of uneven road surface, a roadbed box 80 may be laid on the top slab of the basement 60. Leveling is carried out through the roadbed box 80 so as to ensure that the truck crane 70 and the steel member transportation vehicle normally pass on high and low floors during construction, the measures and members are convenient to lighten and dismantle, the consumed time is short, and the cost of site leveling can be greatly reduced.
In this embodiment, the height difference between the roadbed box 80 and the top board of the basement 60 is transited by the wedge-shaped block 90, so as to avoid the influence on the service life of the roadbed box 80 due to the overlarge gradient.
To sum up, the embodiment of the present invention provides a method for constructing a steel structure of a super high-rise transfer floor, which is used for arranging a transfer floor steel structure on a plurality of giant columns, wherein the plurality of giant columns are arranged around a core cylinder, and the method includes: building a BIM model of a conversion layer steel structure, wherein the conversion layer steel structure comprises an upper layer steel structure and a lower layer steel structure, and determining component sections of the upper layer steel structure and the lower layer steel structure; a plurality of temporary supports are arranged along the circumferential direction of the core barrel and are positioned on a top plate of the basement; hoisting the components of the lower-layer steel structure and connecting the components into a whole, wherein the lower-layer steel structure is placed on the temporary support and is connected with the temporary support structure and the core barrel; the components of the upper steel structure are hoisted and connected into a whole, and the upper steel structure, the giant column, the lower steel structure and the core barrel are respectively connected. Through hoisting the upper steel structure and the lower steel structure in sections and then connecting the upper steel structure and the lower steel structure into a whole, the model selection problem of hoisting mechanical equipment in the conversion layer structure is solved, and the problems of excessive construction mechanical performance and unnecessary cost waste are avoided. In addition, utilize the support of interim support as the conversion floor steel construction, compare in traditional steel pipe support stability better to can directly regard as constructor required vertical passage from top to bottom, reduce setting up of operation scaffold.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for constructing a steel structure of a super high-rise transfer floor, which is used for arranging the steel structure of the transfer floor on a plurality of giant columns, wherein the giant columns are arranged around a core cylinder, and the method is characterized by comprising the following steps:
building a BIM model of the conversion layer steel structure, wherein the conversion layer steel structure comprises an upper layer steel structure and a lower layer steel structure, the upper layer steel structure is positioned right above the lower layer steel structure, and the member segmentation of the upper layer steel structure and the lower layer steel structure is determined;
a plurality of temporary supports are arranged along the circumferential direction of the core barrel and are positioned on a top plate of the basement;
sequentially hoisting the components of the lower-layer steel structure and connecting the components into a whole, wherein the lower-layer steel structure is placed on the temporary support and is connected with the temporary support structure and the core barrel;
and sequentially hoisting the components of the upper-layer steel structure, connecting the components into a whole, and respectively connecting the upper-layer steel structure with the giant column, the lower-layer steel structure and the core barrel.
2. The method for constructing an ultra-high transfer floor steel structure as claimed in claim 1, wherein a truck crane is selected to hoist the components of the upper and lower steel structures, and the truck crane runs on the top plate of the basement.
3. The method of constructing a super high-rise transfer floor steel structure as claimed in claim 2, wherein a roadbed box is laid on a ceiling of the basement.
4. The method for constructing a steel structure of an ultra-high-rise transfer floor as claimed in claim 3, wherein the height difference between the roadbed box and the top plate of the basement is transferred by wedge blocks.
5. The method of constructing a super high transfer floor steel structure of claim 1, wherein before the plurality of temporary supports are provided in a circumferential direction of the core barrel, the method of constructing a super high transfer floor steel structure further comprises: and adding a herringbone strut below the concrete beam of the basement to reinforce the basement.
6. The method of constructing an ultra-high transfer floor steel structure as claimed in claim 1, wherein the bottom of the temporary support is disposed on the top slab of the basement through a bottom transfer beam.
7. The method of constructing a super high transfer floor steel structure of claim 1, wherein after the plurality of temporary supports are provided in a circumferential direction of the core tube, the method of constructing a super high transfer floor steel structure further comprises: and arranging a top conversion beam on the top of each temporary support, arranging two parallel rigid supports above the top conversion beam, and enabling the lower-layer steel structure to rest on the rigid supports.
8. The method of constructing a super high transfer floor steel structure of claim 7, wherein after a top transfer beam is provided on top of each of the temporary supports and two parallel rigid supports are provided above the top transfer beam, the method of constructing a super high transfer floor steel structure further comprises: and a constant-force jack is arranged between the two rigid supports.
9. The method for constructing a super high-rise transfer floor steel structure, according to claim 1, wherein the upper steel structure and the giant column are welded by an umbrella-shaped steel structure.
10. The method for constructing the ultra-high-rise transfer floor steel structure of claim 1, wherein the temporary supports are assembled by a plurality of tower crane standard knots.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011279795.6A CN112459249A (en) | 2020-11-16 | 2020-11-16 | Construction method of steel structure of super high-rise transfer floor |
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| CN202011279795.6A CN112459249A (en) | 2020-11-16 | 2020-11-16 | Construction method of steel structure of super high-rise transfer floor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319596A (en) * | 2021-12-29 | 2022-04-12 | 上海建工（江苏）钢结构有限公司 | Manufacturing method of umbrella-shaped conversion structure |
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| JP2014227243A (en) * | 2013-05-20 | 2014-12-08 | フジテック株式会社 | Renewal method for passenger conveyor |
| CN109853741A (en) * | 2019-03-29 | 2019-06-07 | 同济大学建筑设计研究院(集团)有限公司 | A kind of core wall structure system with conversion layer |
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