CN117166813B - Construction method for building curtain wall reconstruction external protection system - Google Patents
Construction method for building curtain wall reconstruction external protection system Download PDFInfo
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- CN117166813B CN117166813B CN202311453473.2A CN202311453473A CN117166813B CN 117166813 B CN117166813 B CN 117166813B CN 202311453473 A CN202311453473 A CN 202311453473A CN 117166813 B CN117166813 B CN 117166813B
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- 238000010276 construction Methods 0.000 title claims abstract description 81
- 230000001681 protective effect Effects 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 17
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- 230000008439 repair process Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
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Abstract
The invention relates to the technical field of building reconstruction construction, in particular to a construction method of an external protection system for building curtain wall reconstruction. The method comprises the following steps: 1) Protection construction of a protruding structure: constructing a protective structure to a protruding structure of an outer elevation of a building by utilizing a tower crane, and then arranging a track crane along the outer elevation below the protruding structure; 2) And (3) material transportation: conveying the manufactured outer protection structure unit and the cantilever platform member into a base layer; 3) Curtain transformation area overhanging platform construction: a construction hole is formed in the outer vertical face of the foundation layer, and then an overhanging platform is fixed below the construction hole of the foundation layer; 4) And (3) installing an outer protection structure unit: an outer protection structure unit is arranged by a track crane to form an outer protection structure of the curtain wall; a gap is reserved between the outer protective structure and the outer vertical surface of the building, and the outer protective structure unit is transported upwards from the gap; 5) Setting an operation platform: and an operation platform is arranged on the inner side of the outer protection structure.
Description
Technical Field
The invention relates to the technical field of building reconstruction construction, in particular to a construction method of an external protection system for building curtain wall reconstruction.
Background
The protection structure is arranged on the outer facade of the building in the reconstruction and repair construction of the outer facade of the building, and then the curtain wall can be replaced or repaired.
The conventional practice of the facade protection structure is to set the protection structure from the ground, and then gradually and upwards superimpose the protection structure by using a tower crane until the protection structure of the facade is covered.
However, many buildings, especially office buildings, have a large number of curved surfaces and protruding structures for the purpose of aesthetic appearance. If the tower crane is used for constructing the position below the protruding structures, the protruding structures can influence the operation of the tower crane, and even the tower crane cannot be used at all.
And the repair work of the curtain wall sometimes does not need to construct the whole curtain wall of the whole outer facade, and often aims at the damage or the improvement work of a certain number of floors needing to be replaced and improved.
Disclosure of Invention
The invention provides a construction method for an external protection system for building curtain wall reconstruction.
The technical problems to be solved are as follows: under the condition that the operation of the tower crane can be influenced due to the protruding structure on the outer vertical surface of the building, if an outer protection system is arranged in a curtain wall reconstruction area below the protruding structure.
In order to solve the technical problems, the construction method of the external protection system for the building curtain wall reconstruction project adopts the following scheme.
The construction method of the outer protection system of the building curtain wall reconstruction project is used for the construction of the outer protection structure of the curtain wall reconstruction area, which is influenced by the protruding structure of the main building body, when the outer facade of the building part needs to be repaired; the construction method is characterized by comprising the following steps of:
1) Protection construction of a protruding structure: constructing a protective structure to a protruding structure of an outer elevation of a building by utilizing a tower crane, and then arranging a track crane along the outer elevation below the protruding structure;
2) And (3) material transportation: conveying the manufactured outer protection structure unit and the cantilever platform member into a base layer;
3) Curtain transformation area overhanging platform construction: the lowest layer of the outer elevation curtain wall reconstruction area is used as a construction foundation layer, a construction hole is formed in the outer elevation of the foundation layer, and then an overhanging platform which extends outwards is fixed below the construction hole of the foundation layer;
4) And (3) installing an outer protection structure unit: horizontally transporting the outer protection structure units in the foundation layer to an overhanging platform outside a construction hole, and then installing the outer protection structure units by using a track crane to form an outer protection structure of the curtain wall; a gap is reserved between the outer protective structure and the outer vertical surface of the building, and the outer protective structure unit is transported upwards from the gap;
5) Setting an operation platform: and an operation platform is arranged on the inner side of the outer protection structure.
Preferably, in the process of installing the outer protective structure unit of step 4), a support bar is provided on the outer protective structure, the support bar being connected to the building body.
The outside rotation of preferred operation platform is installed on outer protective structure, still sets up the diagonal brace on the operation platform simultaneously, and the diagonal brace below supports on outer protective structure.
The outer side of the preferred outer protective structure is also fixedly provided with a protective screen, which is mounted onto the outer protective structure unit before the outer protective structure unit of step 4) is mounted.
Preferably, in the step 2), when the overhanging platform in the curtain wall reconstruction area is constructed, under the condition that a construction elevator or an elevator of a building per se cannot be used, all the floor slabs above the foundation layer are provided with blanking holes, and the blanking holes vertically penetrate through the building from the foundation layer upwards; during the transportation of the outer protection structure unit in the step 3), conveying the outer protection structure unit into the floor of the foundation layer from the blanking hole by using a tower crane; meanwhile, the overhanging platform is also conveyed into the foundation layer through the blanking hole.
Preferably, in the protection construction of the protruding structure in the step 1), the track crane is transported to the corresponding floor at the bottom of the protruding structure of the building through the discharging hole,
preferably, when the outer protective structure unit in the step 4) is installed, the outer protective structure unit at the bottom and the overhanging platform are welded and fixed; the upper and lower of outer protective structure all is provided with the fixed column, adopts the fixed column to add the sheathed tube mode and connects between the outer protective structure unit.
Compared with the prior art, the construction method for the external protection system for building curtain wall transformation has the following beneficial effects:
in the repair work of building facades, the construction repair is generally performed only on damaged parts, and the parts needing the construction are often high. In repair operation, the outer protective structure is not arranged on the outer vertical surface of the whole building generally, and only the outer protective structure is arranged on the outer side of a curtain wall reconstruction area which needs to be replaced, and then construction operation in the curtain wall reconstruction area is carried out.
In the prior art, an outer protection structure is directly hoisted to an outer vertical surface of a curtain wall reconstruction area by using a tower crane or a crane.
However, some special-shaped buildings cannot install the outer protective structure on the curtain wall reconstruction area of the building due to the steel wire ropes of the shielding tower crane of the outer elevation protruding structure.
Therefore, aiming at the problems, when the outer vertical surface of the building part needs to be repaired and constructed, the building main body is provided with a protruding structure protruding outwards above the curtain wall reconstruction area, and the protruding structure influences the construction of the tower crane on the outer protection structure of the curtain wall reconstruction area; the construction method comprises the following steps:
1) Protection construction of a protruding structure: constructing a protective structure to a protruding structure of an outer elevation of a building by utilizing a tower crane, and then arranging a track crane along the outer elevation below the protruding structure;
2) And (3) material transportation: conveying the manufactured outer protection structure unit and the cantilever platform member into a base layer;
3) Curtain transformation area overhanging platform construction: the lowest layer of the outer elevation curtain wall reconstruction area is used as a construction foundation layer, a construction hole is formed in the outer elevation of the foundation layer, and then an overhanging platform which extends outwards is fixed below the construction hole of the foundation layer;
4) And (3) installing an outer protection structure unit: horizontally transporting the outer protection structure units in the foundation layer to an overhanging platform outside a construction hole, and then installing the outer protection structure units by using a track crane to form an outer protection structure of the curtain wall; a gap is reserved between the outer protective structure and the outer vertical surface of the building, and the outer protective structure unit is transported upwards from the gap;
5) Setting an operation platform: and an operation platform is arranged on the inner side of the outer protection structure.
Through above technical scheme, ingenious utilization building original protruding structure sets up the track and hangs on protruding structure, then carries out outer protective structure's construction with the track.
Meanwhile, in the construction method, the outer protection structure unit is firstly transported into the building, and particularly, the floor corresponding to the lowest part of the curtain wall reconstruction area, namely, the foundation layer. In the construction of hoisting by means of a rail crane, it is necessary to transfer the hoisting from the building to the outside of the building. Thus, a construction hole needs to be formed.
And the outer vertical face of the transformation project is already closed, and each construction hole is arranged, so that the hole needs to be filled after the subsequent transformation is finished. Therefore, only the construction hole is formed in the outer vertical face of the foundation layer, all the outer protection structure units are transported outwards from the hole of the foundation layer, and then the outer protection structure units are transported upwards by using the gap between the outer protection structure and the outer vertical face.
The outer protective structure units are sequentially overlapped upwards from bottom to top to finally form an outer protective structure.
Drawings
FIG. 1 is a schematic illustration of the installation and implementation of the step 4) external protective structure unit of the present invention;
fig. 2 is a schematic diagram of the state after step 5) is completed in the present invention.
Reference numerals illustrate:
1-an outer protective structure, 1 a-an outer protective structural unit;
2-overhanging platforms;
3-track crane slings;
4-building main body;
5-curtain wall outer vertical surfaces;
6-an operation platform;
7-diagonal bracing;
8-supporting rods;
9-protection of the protruding structure;
10-track crane.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise indicated, terms of orientation such as "up, down, left, right" are used to refer generally to up, down, left, right as shown with reference to fig. 1; "inner and outer" means inner and outer relative to the contour of the respective parts themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the repair work of building facades, the construction repair is generally performed only on damaged parts, and the parts needing the construction are often high. In repair operation, the outer protective structure 1 is not arranged on the outer vertical surface of the whole building generally, the outer protective structure 1 is arranged on the outer side of a curtain wall reconstruction area which needs to be replaced, and then construction operation in the curtain wall reconstruction area is carried out.
In the prior art, the outer protective structure 1 is directly hoisted to the outer vertical surface of a curtain wall reconstruction area by using a tower crane or a crane.
However, some special-shaped buildings cannot install the outer protective structure 1 on a curtain wall reconstruction area of the building due to the steel wire ropes of the shielding tower crane of the outer elevation protruding structure.
Therefore, aiming at the problems, when the outer vertical surface of the building part needs to be repaired, the building main body 4 is provided with a protruding structure protruding outwards above the curtain wall reconstruction area, and the protruding structure influences the construction of the tower crane on the outer protection structure 1 of the curtain wall reconstruction area; the construction method comprises the following steps:
1) Protruding structure protection 9 construction: constructing a protective structure to a protruding structure of an outer elevation of a building by using a tower crane, and then arranging a track crane 10 along the outer elevation below the protruding structure;
2) And (3) material transportation: conveying the manufactured outer protection structure unit 1a and the cantilever platform 2 component into a foundation layer;
3) Curtain transformation area platform 2 construction of encorbelmenting: the lowest layer of the outer elevation curtain wall reconstruction area is used as a construction foundation layer, a construction hole is formed in the outer elevation of the foundation layer, and then an overhanging platform 2 which extends outwards is fixed below the construction hole of the foundation layer;
4) The outer protective structure unit 1a is mounted: horizontally transporting the outer protection structure unit 1a in the foundation layer to the overhanging platform 2 outside the construction hole, and then installing the outer protection structure unit 1a by using the track crane 10 to form an outer protection structure 1 of the curtain wall; a gap is reserved between the outer protective structure 1 and the outer vertical surface of the building, and the outer protective structure unit 1a is transported upwards from the gap;
5) Setting an operation platform 6: an operating platform 6 is mounted on the inside of the outer protective structure 1.
Through above technical scheme, ingenious utilization is constructed original protruding structure, sets up track crane 10 on protruding structure, then carries out the construction of outer protective structure 1 with the track.
Meanwhile, in the method, the outer protection structure unit 1a is firstly transported into the building, and particularly, the floor corresponding to the lowest part of the curtain wall reconstruction area, namely, the foundation layer. In the construction of hoisting by the rail crane 10, it is necessary to transfer the construction from the building to the outside of the building. Thus, a construction hole needs to be formed.
And the outer vertical face of the transformation project is already closed, and each construction hole is arranged, so that the hole needs to be filled after the subsequent transformation is finished. Therefore, only the construction hole is formed in the outer vertical surface of the foundation layer, all the outer protective structure units 1a are transported outwards from the hole of the foundation layer, and then the outer protective structure units 1a are transported upwards by using the gap between the outer protective structure 1 and the outer vertical surface.
The outer protective structure units 1a are sequentially overlapped upwards from bottom to top to finally form the outer protective structure 1.
In particular, the height of each unit of the outer protective structure 1 in the prior art is relatively high, and is generally about three meters as high as the building floor. In the present invention, since the outer protective structure unit 1a needs to be transported into the building floor first, and then transported to the overhanging platform 2 again using the construction hole. The height of the outer protective structure unit 1a is adapted to the construction hole, and the height of the outer protective structure unit 1a is smaller than the height of the construction hole. And in order to facilitate the mutual correspondence of the outer protective structure 1 and the storey, the height of the storey should be an integer multiple of the height of the outer protective structure unit 1a. That is, the height of the outer protective structure unit 1a is 1/N (N is a positive integer) of the floor height. The height of the outer protective structure unit 1a is preferably 1/2 of the floor height.
The weight of the outer protective structure 1 is ultimately borne by the overhanging platform 2, so that the overhanging platform 2 is fixed to a structure of the building main body 4, such as a beam-column structure of a building.
If the curtain wall of the protruding structural part of the building also needs to be repaired, the protection structure of the protruding structural position is the same as that in the prior art. The tower crane is directly used for hoisting and mounting on the building main body 4 of the protruding structure part. If the projecting structure portion of the building does not require curtain wall construction, this projecting structure guard 9 is constructed as a steel truss structure secured to the projecting structure portion.
After the new truss cross beam and the track beam components used for the arrangement of the track crane 10 are processed, manufactured and transported to the site, the new truss cross beam and the track beam components are vertically transported to the floor corresponding to the bottom of the protruding structure through a discharging hole by using a tower crane, then transported to the outer side of the steel truss which is arranged in a cantilever mode by using a horizontal transport vehicle, lifting lugs are arranged on the upper chord of the steel truss which is arranged in the cantilever mode to serve as hanging points, the components are horizontally transported to the upper surface of the lower chord of the truss which needs to be arranged from the outer side of the truss by adopting a chain block method, a fully paved 6mm pattern steel plate platform is arranged on the upper surface of the lower chord of the steel frame, and three-proofing cloth is required to be fully paved before the components are placed so as to prevent welding slag during hoisting welding from falling. And then, lifting lugs are arranged at the upper chord position of the truss to serve as lifting points, and the cross beam and the track beam are installed by adopting a chain block.
Before the step 4), the pattern steel plate laid on the lower chord of the truss at the lower part of the track crane 10 is required to be removed, and the outer protection structure unit 1a can be lifted and installed after the removal. The laying of the pattern steel plate at the lower part of the original truss is realized by adopting a unit type pattern steel plate which is connected with the lower chord of the truss by using bolts, when the truss is dismantled, the upper chord of the truss is used as a hanging point, a chain block is used for hanging the unit type pattern steel plate so as to ensure the safety of the unit type pattern steel plate after the bolts are removed, then the bolts are removed, the unit type pattern steel plate is horizontally transported to the outer side of the floor truss by using the chain block, and then the unit type pattern steel plate is transported to the floor storage place by using a horizontal vehicle and numbered according to the positions. During installation, the unit pattern steel plate is installed by reverse operation.
During the installation of the outer protective structure unit 1a of step 4), a support bar 8 is provided on the outer protective structure 1, the support bar 8 being connected to the building body 4. The support rods 8 are arranged at intervals of two floors, and the support rods 8 are arranged at intervals in the horizontal direction.
The outside rotation of operation platform 6 is installed on outer protective structure 1, still sets up diagonal brace 7 on the operation platform 6 simultaneously, and diagonal brace 7 below supports on outer protective structure 1. Before the outer guard structure unit 1a is mounted in step 4), the operation platform 6 is mounted to the outer guard structure unit 1a, and the operation platform 6 is brought into close contact with the inner surface of the outer guard structure unit 1a.
The operation platform 6 adopts a rectangular steel pipe as a cantilever cross rod, and adopts a steel pipe with the specification of 60 multiplied by 3mm as an inclined strut 7 to form a triangular bracket. The square tube is connected with the outer protection structure unit 1a by adopting a pin shaft, so that the square tube can be conveniently detached and the position can be changed at any time. A certain distance is reserved between the operation platform 6 and the outer curtain wall, and the distance is not less than 200mm. In order to ensure the stability of the overhanging tripod in the out-of-plane direction, an inclined stay bar 7 is arranged between the overhanging cross bar and the unit frame cross bar, so as to ensure the stability of the operation platform 6. If the overhanging platform 2 has a large overhanging length, the platform can be arranged on the overhanging platform 2 by setting up a scaffold on the inner side of the outer protective structure unit 1a. The load of the scaffold has to be taken into account when designing the platform.
The outer side of the outer protective structure 1 is also fixedly provided with a protective sheet net, which is mounted onto the outer protective structure unit 1a before the outer protective structure unit 1a is mounted in step 4).
When the curtain wall reconstruction area overhanging platform 2 is constructed in the step 2), under the condition that a construction elevator or a building elevator cannot be used, all the floor slabs above the foundation layer are provided with blanking holes, and the blanking holes vertically penetrate through the building from the foundation layer upwards; during the transportation of the outer protection structure unit 1a in the step 3), conveying the outer protection structure unit 1a into a floor of a foundation layer from a discharging hole by using a tower crane; meanwhile, the overhanging platform 2 is also conveyed into the foundation layer through the blanking hole.
In the construction of the protruding structure protection 9 of step 1), the track crane 10 is transported to the corresponding floor at the bottom of the protruding structure of the building through the discharging hole. Therefore, the opening of the blanking hole is divided into two steps in sequence, and the first step is as follows: a blanking hole is first opened downwards from the roof of the building to the corresponding floor at the bottom of the protruding structure of the building, and then the track crane 10 etc. is transported to this floor. And a second step of: the blanking hole is continuously opened downwards until reaching the foundation layer.
When the outer protective structure unit 1a is installed in the step 4), the outer protective structure unit 1a at the bottom and the overhanging platform 2 are welded and fixed; the sleeve is reserved at the top of outer protective structure unit 1a, and outer protective structure 1 is provided with the fixed column from top to bottom, adopts the fixed column to add the sheathed tube mode to connect between the outer protective structure unit 1a. Then the sleeve is horizontally penetrated through the opposite-penetrating bolt.
Or the bottom of the outer protective structure unit 1a is provided with a plug-in post matched with the sleeve, and the outer protective structure units 1a outside the bottom are inserted into the sleeve of the lower outer protective structure unit 1a for connection by using the plug-in post.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (5)
1. The construction method of the outer protection system of the building curtain wall reconstruction project is used for constructing the outer protection structure (1) of the curtain wall reconstruction area by the tower crane when the outer facade of the building part needs to be repaired, and the building main body (4) is provided with a protruding structure protruding outwards above the curtain wall reconstruction area; the construction method of the external protection system for the building curtain wall reconstruction project is characterized by comprising the following steps of:
1) Construction of protruding structure protection (9): constructing a protective structure to a protruding structure of an outer elevation of a building by utilizing a tower crane, and then arranging a track crane (10) along the outer elevation below the protruding structure;
2) And (3) material transportation: the lowest layer of the outer facade curtain wall reconstruction area is used as a construction foundation layer, and the manufactured outer protection structure unit (1 a) and the cantilever platform (2) components are conveyed into the foundation layer;
3) Construction of a cantilever platform (2) in a curtain wall reconstruction area: a construction hole is formed in the outer vertical face of the foundation layer, and then an overhanging platform (2) which extends outwards is fixed below the construction hole of the foundation layer;
4) The outer protective structure unit (1 a) is installed: horizontally transporting an outer protection structure unit (1 a) in a foundation layer to an overhanging platform (2) outside a construction hole, and then installing the outer protection structure unit (1 a) by using a track crane (10) to form an outer protection structure (1) of the curtain wall; a gap is reserved between the outer protective structure (1) and the outer vertical surface of the building, and the outer protective structure unit (1 a) is transported upwards from the gap;
5) Setting an operation platform (6): an operation platform (6) is arranged on the inner side of the outer protection structure (1);
wherein, when the outer protection structure unit (1 a) in the step 2) is transported, the outer protection structure unit (1 a) is transported into the floor of the foundation layer from the discharging hole by using a tower crane; simultaneously, the overhanging platform (2) is also conveyed into the foundation layer through the blanking hole;
in the step 3), when the curtain wall reconstruction area overhanging platform (2) is constructed, under the condition that a construction elevator or a self elevator of a building cannot be used,
a blanking hole is formed in the floor slab above the foundation layer, and the blanking hole vertically penetrates through the building upwards from the foundation layer;
in the process of installing the outer protective structure unit (1 a) in the step 4), a supporting rod (8) is arranged on the outer protective structure (1), and the supporting rod (8) is connected to the building main body (4).
2. The construction method of the outer protection system for the building curtain wall reconstruction project according to claim 1, wherein the outer side of the operation platform (6) is rotatably arranged on the outer protection structure (1), and meanwhile, the operation platform (6) is further provided with an inclined stay bar (7), and the lower part of the inclined stay bar (7) is supported on the outer protection structure (1).
3. The construction method of the external protection system for the building curtain wall reconstruction project according to claim 1, wherein the external side of the external protection structure (1) is fixedly provided with a protection plate net,
before the step 4) of installing the outer protective construction unit (1 a), a protective expanded metal is installed onto the outer protective construction unit (1 a).
4. The construction method of the external protection system for the building curtain wall reconstruction project according to claim 1, wherein in the construction of the protection (9) of the protruding structure in the step 1), the track crane (10) is transported to the corresponding floor of the bottom of the protruding structure of the building through the discharging hole.
5. The construction method of the outer protection system for the building curtain wall reconstruction project according to claim 1, wherein when the outer protection structure unit (1 a) is installed in the step 4), the outer protection structure unit (1 a) at the bottom and the overhanging platform (2) are welded and fixed;
the upper and lower parts of the outer protective structure (1) are provided with fixed columns, and the outer protective structure units (1 a) are connected by adopting a mode of externally adding sleeves to the fixed columns.
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| CN202311453473.2A CN117166813B (en) | 2023-11-03 | 2023-11-03 | Construction method for building curtain wall reconstruction external protection system |
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| CN114961334A (en) * | 2022-05-11 | 2022-08-30 | 北京市第三建筑工程有限公司 | Closed protection dismantling system for high-altitude large-span cantilever structure and construction method thereof |
| CN217652413U (en) * | 2022-05-11 | 2022-10-25 | 北京市第三建筑工程有限公司 | Disposable faultless assembled type outer vertical surface protection system |
| WO2023208250A1 (en) * | 2022-06-02 | 2023-11-02 | 中铁七局集团有限公司 | Curtain wall construction platform |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114809699A (en) * | 2022-05-11 | 2022-07-29 | 北京市第三建筑工程有限公司 | Construction method of assembly type outer facade enclosure system for reconstruction of upper part of super high-rise building |
| CN114876239A (en) * | 2022-05-11 | 2022-08-09 | 北京市第三建筑工程有限公司 | Closed protection dismantling system for high-altitude cantilever structure and construction method thereof |
| CN114961209A (en) * | 2022-05-11 | 2022-08-30 | 北京市第三建筑工程有限公司 | Cantilever truss pushing platform and assembling method thereof |
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| CN217652413U (en) * | 2022-05-11 | 2022-10-25 | 北京市第三建筑工程有限公司 | Disposable faultless assembled type outer vertical surface protection system |
| WO2023208250A1 (en) * | 2022-06-02 | 2023-11-02 | 中铁七局集团有限公司 | Curtain wall construction platform |
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