CN115717487A - Temporary support with super-large overhanging steel structure and construction method of super-large overhanging steel structure support - Google Patents
Temporary support with super-large overhanging steel structure and construction method of super-large overhanging steel structure support Download PDFInfo
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- CN115717487A CN115717487A CN202211525936.7A CN202211525936A CN115717487A CN 115717487 A CN115717487 A CN 115717487A CN 202211525936 A CN202211525936 A CN 202211525936A CN 115717487 A CN115717487 A CN 115717487A
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- 239000000725 suspension Substances 0.000 claims abstract description 22
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Abstract
The invention discloses an ultra-large overhanging steel structure temporary support and a construction method of the ultra-large overhanging steel structure support, wherein the temporary support comprises a roadbed box; the road bed is characterized by further comprising a supporting vertical frame fixed on the top surface of the road bed box, a distribution beam base plate is fixed at the top end of the supporting vertical frame, and a lifting adjusting piece is fixed on the top surface of the distribution beam base plate. The construction method comprises the following steps: building the temporary support with the oversized overhanging steel structure between the main upright columns, installing a suspended column on the top surface of the cushion plate of the distribution beam, and pulling cable ropes on two sides of the top end of the suspended column; a bottom steel beam is arranged between the main upright post and the suspension post; installing other suspended columns on the bottom steel beam, and pulling cable wind ropes on two sides of the top end of the suspended column installed at the back; installing inter-column supports among the plurality of suspended columns; and a top steel beam is arranged between the main upright post and the suspension post, and the cable wind rope and the temporary support are detached after the installation is finished. The invention provides reliable support for high-altitude assembly by using the temporary support, and thoroughly solves the defects of the traditional construction method.
Description
Technical Field
The invention relates to the technical field of high-altitude installation and construction of ultrahigh and oversized overhanging steel structures, in particular to a temporary support of an oversized overhanging steel structure and a construction method of the support of the oversized overhanging steel structure.
Background
Along with the improvement of the living standard of the nation, a large number of public buildings in cities, such as shopping malls, museums, theaters and the like, are pulled out like spring shoots after rain. With the increasing landmark attribute of public buildings, architects pursue higher and higher appearance modeling, and the demand of widely using the special-shaped steel structure system to realize the unique appearance modeling of buildings is started. Wherein the steel structure is of super-high and super-large overhanging type.
In the prior art, for ultrahigh and oversized overhanging steel structures, a large number of full framing scaffolds are often adopted in the traditional construction method as construction operation platforms to provide temporary support for components which are not in a system, and the components are spliced at high altitude after being segmented or assembled on the ground into small units. It has the following problems:
(1) For the high-altitude assembly of an ultrahigh and oversized overhanging steel structure, a large amount of scaffolds needs to be invested;
(2) Because the bearing capacity of the scaffold is limited, when the scaffold is used as a temporary support of a steel member, the limitation on the segmentation or assembly of small units of the member is more, and the workload of high-altitude assembly is increased;
(3) When limited by the total amount of single segmented components or small units, the number of the segmented components or small units is increased, the accumulated error is larger when high-altitude scattered assembly is carried out, and the difficulty in controlling the installation precision is larger.
Therefore, how to provide a construction method of an ultra-large cantilever steel structure bracket, which can ensure the mounting precision of the structure to the maximum extent and reduce the investment of a large number of scaffolds in the conventional steel structure mounting to the maximum extent, is a problem that needs to be solved urgently by the technical staff in the field.
Disclosure of Invention
In view of the above, the invention provides a temporary support with an oversized overhanging steel structure and a construction method of the temporary support with the oversized overhanging steel structure, and aims to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a temporary support with an oversized overhanging steel structure comprises a roadbed box; the road bed is characterized by further comprising a supporting vertical frame fixed on the top surface of the road bed box, a distribution beam base plate is fixed at the top end of the supporting vertical frame, and a lifting adjusting piece is fixed on the top surface of the distribution beam base plate.
Because the large span and the structure of encorbelmenting are more in the super large steel construction of encorbelmenting, and its single component, especially truss girder etc. weight is great, if adopt the scaffold system that the bearing capacity is less, then need divide into a plurality of sections with single component, until every section component installation load is less than scaffold system bearing capacity, assemble in the air. Through the technical scheme, the temporary support system for steel structure installation has larger bearing capacity, completely meets the integral hoisting requirements of large-span and overhanging structures, and avoids the adoption of a construction method for dividing installation components into multiple sections for aerial assembly due to insufficient bearing capacity of the temporary support structure.
Preferably, in the temporary support with the oversized overhanging steel structure, the supporting vertical frame is a lattice type steel column. The lattice type steel column can meet the supporting strength requirement of the temporary support.
Preferably, in the temporary support with the oversized cantilever steel structure, the lifting adjusting piece is a sandbox or a jack. The sandbox or the jack is simple and applicable in structure, and can meet the adjustment requirement on the cross beam.
Preferably, in the temporary support with the oversized overhanging steel structure, a fence is fixed at the edge of the top surface of the distribution beam base plate. The setting of rail can guarantee constructor's personal safety.
Preferably, in the above-mentioned steel construction temporary support that encorbelments of super large, distribution beam backing plate top surface middle part is unsettled post installing zone, the quantity of lift adjustment spare is a plurality of, and distributes the outside of unsettled post installing zone. The lifting adjusting piece is used for adjusting the levelness and the position of the cross beam, and the quantity is set according to requirements.
The invention also provides a construction method of the super-large cantilever steel structure bracket, which specifically comprises the following steps:
s1, building the oversized overhanging steel structure temporary support between main upright columns, installing suspended columns on the top surfaces of the cushion plates of the distribution beams, and pulling cable wind ropes on two sides of the top ends of the suspended columns;
s2, mounting a bottom steel beam between the main upright post and the suspension post;
s3, installing other suspended columns on the bottom steel beam, and pulling cable wind ropes on two sides of the top end of the suspended column installed behind;
s4, installing inter-column supports among the plurality of suspension columns;
and S5, mounting a top steel beam between the main upright post and the suspension post, and removing the cable wind rope and the temporary support after the mounting is completed.
Through the technical scheme, the support-method high-altitude installation provides a reliable construction method for the installation of an ultra-large cantilever steel structure, simultaneously furthest ensures the installation precision of the structure, and furthest reduces the investment of a large number of scaffolds in the traditional steel structure installation.
Preferably, in the construction method of the oversized cantilevered steel structure support, in step S2, when the bottom steel beam is installed, the temporary square steel pipe support is arranged at the bottom of the bottom steel beam, and the cable rope and the temporary support are removed together when being removed. The stability and the reliability of bottom girder steel installation can be guaranteed in interim square steel pipe support.
Preferably, in the construction method of the oversized cantilevered steel structure support, in step S2, when the bottom steel beam is installed, the position of the bottom steel beam is adjusted by adjusting the height of the lifting adjusting piece. The lifting adjusting piece is used for adjusting the levelness and the position of the cross beam, and the quantity is set according to the requirement.
Preferably, in the construction method of the oversized cantilever steel structure bracket, an inclined support is arranged between the bottom of the bottom steel beam and the main upright post. The diagonal bracing can improve the structural strength of bottom girder steel.
Preferably, in the construction method of the oversized overhanging steel structure bracket, the top end of the cable rope is connected with the lifting lug at the top end of the suspended column, and the bottom end of the cable rope is inserted into the ground through a steel chisel. The guy cable facilitates connection and subsequent removal.
According to the technical scheme, compared with the prior art, the invention discloses and provides the temporary support with the super-large cantilever steel structure and the construction method of the super-large cantilever steel structure support, and the construction method has the following beneficial effects:
1. the support method of the super-large cantilever steel structure provides reliable support for overhead assembly by using lattice type temporary support, and thoroughly solves the defects of the traditional construction method.
2. The bearing capacity of the temporary support system provided in the super-large cantilever steel structure support method is far greater than that of a scaffold, and when the super-high and super-large cantilever steel structures are assembled in high altitude, the number of member sections and small units can be reduced to the greatest extent.
3. Due to the fact that the number of the member sections and the number of the small units are reduced, investment of the scaffold for the construction platform can be reduced to the greatest extent, and the scaffold for the construction platform can be replaced by the crank arm vehicle under the condition that site construction conditions allow.
4. Due to the reduction of the number of the member sections and the small units, the mounting precision is easy to control when the high-altitude assembly is carried out.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a temporary support with an oversized overhanging steel structure, provided by the invention;
FIG. 2 is a schematic diagram of step S1 of the construction method of the super-large cantilever steel structure bracket provided by the invention;
FIG. 3 is a schematic side view of step S1 of the construction method of the super-large cantilever steel structure bracket provided by the invention;
FIG. 4 is a schematic diagram of step S2 of the construction method of the super-large cantilever steel structure bracket provided by the invention;
FIG. 5 is a schematic diagram of steps S3 and S4 of the construction method of the super-large cantilever steel structure bracket provided by the invention;
FIG. 6 is a schematic diagram of step S5 of the construction method of the super-large cantilever steel structure bracket provided by the invention;
fig. 7 is a schematic diagram of completion of the cantilever structure in step S5 of the construction method of the super-large cantilever steel structural support provided by the invention.
Wherein:
1-roadbed box; 2-supporting a vertical frame; 3-distributing beam backing plates; 4-a lifting adjusting part; 5-main upright post; 6-a suspended column; 7-a guy rope; 8-bottom steel beam; 9-supporting among the columns; 10-a top steel beam; 11-inclined support; 12-lifting lugs; 13-steel chisel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawing 1, the embodiment of the invention discloses a temporary support with an oversized overhanging steel structure, which comprises a roadbed box 1; still including fixing the support grudging post 2 at 1 top surfaces of roadbed case, support 2 top ends of grudging post and be fixed with distribution beam backing plate 3, distribution beam backing plate 3 top surfaces are fixed with lift adjustment 4.
In order to further optimize the above technical solution, the supporting stand 2 is a lattice type steel column.
In order to further optimize the above technical solution, the lifting adjusting member 4 is a sandbox or a jack.
In order to further optimize the technical scheme, a fence is fixed on the edge of the top surface of the distribution beam base plate 3.
In order to further optimize the technical scheme, the middle of the top surface of the distribution beam base plate 3 is a suspension column installation area, and a plurality of lifting adjusting pieces 4 are distributed on the outer side of the suspension column installation area.
The construction method of the oversized cantilever steel structure support provided by the embodiment specifically comprises the following steps:
s1, referring to attached drawings 2 and 3, building an ultra-large cantilever steel structure temporary support frame of any one of claims 1-5 between main columns 5, installing a suspension column 6 on the top surface of a distribution beam backing plate 3, and pulling cable wind ropes 7 on two sides of the top end of the suspension column 6; the top end of the cable rope 7 is connected with a lifting lug 12 at the top end of the suspension column 6, and the bottom end of the cable rope 7 is inserted into the ground through a steel chisel 13;
s2, referring to the attached figure 4, a bottom steel beam 8 is arranged between the main upright post 5 and the suspension post 6; when the bottom steel beam 8 is installed, a temporary square steel pipe support is arranged at the bottom of the bottom steel beam 8, and the temporary square steel pipe supports the square steel pipes of the openings 200 x 12; when the bottom steel beam 8 is installed, the position of the bottom steel beam 8 is adjusted by adjusting the height of the lifting adjusting piece 4; an inclined support 11 is arranged between the bottom of the bottom steel beam 8 and the main upright post 5;
s3, referring to the attached figure 5, installing other suspension columns 6 on the bottom steel beam 8, and pulling cable wind ropes 7 on two sides of the top ends of the suspension columns 6 installed at the back; the top end of the cable rope 7 is connected with a lifting lug 12 at the top end of the suspension column 6, and the bottom end of the cable rope 7 is inserted into the ground through a steel chisel 13; the cable wind rope 7 is a steel wire rope with the diameter of 19-25 mm, and the manual chain block is 2-5 tons.
S4, installing inter-column supports 9 among the plurality of suspension columns 6;
and S5, referring to the attached drawings 6 and 7, mounting a top steel beam 10 between the main upright post 5 and the suspension post 6, and removing the cable rope 7, the temporary square steel tube support and the temporary support after the mounting is finished.
The advantages of this embodiment are:
1. the temporary support and the bottom roadbed box and the upper part of the temporary support are integrally formed by the steel members to be installed, so that the temporary support has enough stability and can ensure the construction safety and the installation precision of the steel structure.
2. The method is suitable for various irregular members, is not limited by the size and the shape of the selected irregular members, can be used for making a bracket with a corresponding specification according to the upper load, and does not need to repeatedly design the bracket form.
3. The support is convenient to move, can be used in a turnover mode, is high in turnover speed, and can save construction period and measure cost.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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 invention. Thus, the present invention 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 (10)
1. A temporary support with an ultra-large cantilever steel structure comprises a roadbed box (1); the road bed is characterized by further comprising a supporting vertical frame (2) fixed to the top surface of the road bed box (1), a distribution beam base plate (3) is fixed to the top end of the supporting vertical frame (2), and a lifting adjusting piece (4) is fixed to the top surface of the distribution beam base plate (3).
2. The temporary support frame with super-large cantilever steel structure as claimed in claim 1, wherein said supporting vertical frame (2) is a lattice type steel column.
3. The temporary support frame with super-large cantilever steel structure as claimed in claim 1, wherein said lifting adjusting member (4) is a sandbox or a jack.
4. The temporary support frame with the ultra-large cantilever steel structure as claimed in claim 1, wherein the top edge of the distribution beam backing plate (3) is fixed with a fence.
5. The temporary support frame with the oversized cantilever steel structure as claimed in any one of claims 1-4, wherein the middle part of the top surface of the distribution beam backing plate (3) is a suspended column mounting area, and the number of the lifting adjusting pieces (4) is multiple and is distributed outside the suspended column mounting area.
6. The construction method of the super-large cantilever steel structure support is characterized by comprising the following steps:
s1, building the temporary support with the oversized overhanging steel structure, which is disclosed by any one of claims 1-5, between main columns (5), installing suspension columns (6) on the top surfaces of distribution beam backing plates (3), and pulling cable wind ropes (7) on two sides of the top ends of the suspension columns (6);
s2, mounting a bottom steel beam (8) between the main upright column (5) and the suspension column (6);
s3, installing other suspension columns (6) on the bottom steel beam (8), and pulling cable wind ropes (7) at two sides of the top end of the suspension column (6) installed at the back;
s4, installing inter-column supports (9) among the plurality of suspension columns (6);
s5, mounting a top steel beam (10) between the main upright post (5) and the suspended post (6), and removing the cable wind rope (7) and the temporary support after the mounting is completed.
7. The construction method of the super-large cantilever steel structure bracket according to claim 6, wherein in the step S2, when the bottom steel beam (8) is installed, a temporary square steel pipe support is arranged at the bottom of the bottom steel beam (8) and is removed together when the cable rope (7) and the temporary bracket are removed.
8. The construction method of the super large cantilever steel structure bracket according to claim 6, wherein in step S2, the position of the bottom steel beam (8) is adjusted by adjusting the height of the lifting adjusting member (4) when the bottom steel beam (8) is installed.
9. The construction method of the super-large cantilever steel structure bracket according to claim 6, wherein an inclined support (11) is installed between the bottom of the bottom steel beam (8) and the main upright post (5).
10. The construction method of the oversized overhanging steel structure bracket according to claim 6, characterized in that the top end of the cable rope (7) is connected with the lifting lug (12) at the top end of the suspended column (6), and the bottom end of the cable rope (7) is inserted into the ground through a steel chisel (13).
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| CN202211525936.7A CN115717487A (en) | 2022-11-30 | 2022-11-30 | Temporary support with super-large overhanging steel structure and construction method of super-large overhanging steel structure support |
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| CN202211525936.7A CN115717487A (en) | 2022-11-30 | 2022-11-30 | Temporary support with super-large overhanging steel structure and construction method of super-large overhanging steel structure support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605277A (en) * | 2023-12-18 | 2024-02-27 | 中建八局第三建设有限公司 | A reverse construction method for high-altitude cantilevered steel structure corridors |
| CN117759037A (en) * | 2024-01-30 | 2024-03-26 | 中国建筑第八工程局有限公司 | A method for unloading temporary supports in cantilevered partitions |
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2022
- 2022-11-30 CN CN202211525936.7A patent/CN115717487A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117605277A (en) * | 2023-12-18 | 2024-02-27 | 中建八局第三建设有限公司 | A reverse construction method for high-altitude cantilevered steel structure corridors |
| CN117759037A (en) * | 2024-01-30 | 2024-03-26 | 中国建筑第八工程局有限公司 | A method for unloading temporary supports in cantilevered partitions |
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