CN114737789A - Combined structure dismantling and external wall temporary reinforcing construction method - Google Patents
Combined structure dismantling and external wall temporary reinforcing construction method Download PDFInfo
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- CN114737789A CN114737789A CN202210470477.0A CN202210470477A CN114737789A CN 114737789 A CN114737789 A CN 114737789A CN 202210470477 A CN202210470477 A CN 202210470477A CN 114737789 A CN114737789 A CN 114737789A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
- E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/26—Strutting means for wall parts; Supports or the like, e.g. for holding in position prefabricated walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
- E04G25/02—Shores or struts; Chocks non-telescopic
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a combined structure dismantling and external wall temporary reinforcement construction method, which designs a structure dismantling and reinforcement construction method combining a steel structure and a steel pipe scaffold according to different requirements of old building dismantling and external wall protection, can effectively ensure the stability of an external wall when the internal structure of a building is dismantled, has simple integral construction process, easily obtained materials, low construction cost and wide applicability, and meets the requirements of external wall protection and reinforcement.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a combined structure dismantling and outer wall temporary reinforcing construction method.
Background
With the development of national economy, the problem of leaving a previous batch of old buildings in the building market is urgently to be solved, at the moment, a 'city updating' project is gradually brought up to schedule, the functions of the previous batch of old buildings cannot meet the current use requirements, but the external facade style of the buildings represents the characteristics of a period and even has important artistic value. In the urban renovation project, the problem is faced, namely how to reinforce and retain the external facade wall body while the internal structure of the old building is dismantled and newly built.
The existing structure dismantling scheme is mature, and when the structure is dismantled, two conventional schemes for reserving the outer decorative wall are available; one is a construction method based on the steel pipe scaffold, the method is simple to operate and low in cost, but the steel pipe scaffold is low in self rigidity and limited in application range; the other is a construction method based on a steel structure, although the steel structure has large self rigidity and wide application range, the method is complex to operate and has higher manufacturing cost.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a combined structure dismantling and external wall temporary reinforcement construction method, which is based on a mode of combining a steel structure and a steel pipe scaffold, can effectively ensure the stability of an external wall when the internal structure of a building is dismantled, is safer and more reliable in construction, and has the advantages of simple integral construction process, easily obtained materials and low construction cost.
The present invention achieves the above-described object by the following technical means.
A combined structure dismantling and outer wall temporary reinforcement construction method comprises the following steps:
step 1: constructing anchor piles along the periphery of the building structure to be dismantled, and driving the anchor piles into a foundation;
step 2: building an outer protective frame around the building structure to be dismantled;
and 3, step 3: arranging steel structure protection devices in a grid shape on the inner side and the outer side of the outer wall to be protected, and mutually connecting the grids on the inner side and the outer side of the outer wall into a whole;
and 4, step 4: rigidly connecting an inclined support at the anchor pile, and then connecting the other end of the inclined support with an outer protection frame;
and 5: a plurality of wall connecting supports are uniformly arranged on the outer protection frame from bottom to top at intervals, one end of each wall connecting support is fixed with the outer protection frame, and the other end of each wall connecting support is connected with the steel structure protection device;
and 6: the indoor support is erected, a layer of full-hall support frame is firstly erected, a floor type steel pipe scaffold is adopted as a frame body of the full-hall support frame, and the top of the full-hall support frame is tightly attached to a floor plate;
and 7: repeating the step 6, and erecting other layers of full-hall supporting frames;
and 8: the structure is demolishd from last down, at first demolishs roof structure, then demolishs top floor board and vertical post, demolishs lower floor board and cylinder structure again, at this in-process, remains the outer wall structure throughout and does not move.
Further, the anchor pile is an uplift anchor rod with the diameter of 15 cm.
Furthermore, the outer protection frame adopts a double-row steel pipe floor scaffold, the diameter of a steel pipe of the outer protection frame is 3cm, and the wall thickness is 2 mm.
Furthermore, the steel structure protection device adopts 14# channel steel, grids on the inner side and the outer side of the outer wall are connected into a whole through the 14# channel steel, and the mesh size formed by the channel steel is 1 multiplied by 1 m.
Further, the diagonal brace is formed by welding a plurality of light rectangular small square pipes, the square pipes for manufacturing the diagonal brace have the cross-sectional dimension of 5 x 5cm, the wall thickness of 2mm, and the cross-sectional dimension of 1 x 1 m.
Further, the diameter of the steel pipe in the one-layer full-framing support frame is 3cm, and the wall thickness is 2 mm.
Further, the wall connecting support is a No. 14 channel steel.
The invention has the following beneficial effects:
the invention designs a structure dismantling and reinforcing construction method combining a steel structure and a steel pipe scaffold according to different requirements of old building dismantling and outer wall protection, has simple process, convenient construction and easily obtained materials, can save the cost by 40 percent compared with the traditional construction method, improves the quality safety by 30 percent, has wide applicability and meets the requirement of outer wall protection and reinforcement.
Drawings
Fig. 1 is a schematic view of a combined structure dismantling and external wall temporary reinforcement construction structure according to the present invention.
In the figure: 1-anchor pile; 2-an external protective frame; 3-inclined support; 4-connecting wall to support; 5-outer wall; 6-a layer of full supporting frame; 7-floor plate; 8-vertical columns; 9-roof.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
In the description of the present invention, it should be understood that the terms "mounted," "connected," "fixed," and the like are used broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a direct connection, an indirect connection through an intermediate medium, or a communication between two elements; the specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The combined structure dismantling and external wall temporary reinforcing structure is shown in figure 1, and the concrete construction method is as follows:
step 1: constructing an anchor pile;
constructing anchor piles 1 along the periphery of a building structure to be dismantled by adopting special machinery, driving the anchor piles 1 into a foundation, wherein the anchor piles 1 are uplift anchor rods with the diameter of 15 cm;
step 2: constructing an outer protection frame 2;
the outer protection frame 2 adopts a double-row steel pipe floor scaffold and is erected around a building structure to be dismantled, the diameter of a steel pipe of the outer protection frame 2 is 3cm, and the wall thickness is 2 mm;
and step 3: constructing a steel structure protection device;
the steel structure protection device adopts 14# channel steel to form latticed arrangement on the inner side and the outer side of the outer wall 5 to be protected, the inner grid and the outer grid are connected into a whole through the 14# channel steel, and the mesh size of the grid formed by the channel steel is 1 multiplied by 1 m; the steel structure protection device can effectively prevent the outer wall 5 from being unstable in the dismantling construction process;
and 4, step 4: constructing an inclined support 3;
a plurality of light rectangular small square tubes are welded in a factory in advance to form an inclined support 3, then the inclined support is transported to a site for construction, one end of the inclined support 3 is rigidly connected with an anchor pile 1, and the other end of the inclined support is connected with an outer protective frame 2; the cross section of the small square tube for manufacturing the diagonal bracing 3 is 5 multiplied by 5cm, the wall thickness is 2mm, and the cross section of the diagonal bracing 3 is 1 multiplied by 1 m;
and 5: constructing a wall connecting support 4;
the wall connecting supports 4 are 14# channel steel, a plurality of wall connecting supports 4 are uniformly arranged on the outer protection frame 2 from bottom to top at intervals, one end of each wall connecting support 4 is fixed with the outer protection frame 2, and the other end of each wall connecting support 4 is connected with the steel structure protection device;
step 6: constructing a layer of full-space support frame 6;
after all the wall-connected supports 4 are erected, the indoor supports are erected, a layer of full-hall support frames 6 are erected, a floor type steel pipe scaffold is adopted as a frame body of the full-hall support frames 6, the diameter of a steel pipe is 3cm, the wall thickness is 2mm, and the top of the full-hall support frames 6 is ensured to be tightly attached to a floor plate 7;
and 7: sequentially building two or more layers of full-hall supporting frame structures according to the step 6;
and 8: each layer full hall support frame sets up the completion back, from last down begin to carry out the structure demolish, at first demolish roof 9 structure, then demolish top floor board 7 and vertical post 8, demolish lower floor board 7 and cylinder structure again, in this in-process, it is motionless to remain outer wall 5 structure all the time, at steel construction protection device, even wall supports 4, under outer protection frame 2 and bearing diagonal 3's effect, can not exert an influence to outer wall 5 when building inner structure demolishs, outer wall 5 can remain stable state all the time, whole work progress safe and reliable more.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. A combined structure dismantling and outer wall temporary reinforcement construction method is characterized by comprising the following steps:
step 1: constructing anchor piles (1) along the periphery of a building structure to be dismantled, and driving the anchor piles (1) into a foundation;
step 2: erecting an outer protective frame (2) around a building structure to be dismantled;
and step 3: arranging steel structure protection devices in a grid shape on the inner side and the outer side of an outer wall (5) to be protected, and mutually connecting grids on the inner side and the outer side of the outer wall (5) into a whole;
and 4, step 4: rigidly connecting an inclined support (3) at the anchor pile (1), and then connecting the other end of the inclined support (3) with an outer protection frame (2);
and 5: a plurality of wall connecting supports (4) are uniformly arranged on the outer protection frame (2) at intervals from bottom to top, one end of each wall connecting support (4) is fixed with the outer protection frame (2), and the other end of each wall connecting support (4) is connected with a steel structure protection device;
step 6: the indoor support is erected, a layer of full-hall support frames (6) are firstly erected, the frame bodies of the full-hall support frames (6) adopt floor type steel pipe scaffolds, and the tops of the full-hall support frames (6) are tightly attached to a floor plate (7);
and 7: repeating the step 6, and erecting other layers of full-hall supporting frames;
and 8: the structure is dismantled from top to bottom, at first demolishs roof (9) structure, then demolishs top floor board (7) and vertical post (8), demolishs lower floor board (7) and cylinder structure again, at this in-process, remains outer wall (5) structure motionless throughout.
2. The combined type structure demolition and exterior wall temporary reinforcement construction method according to claim 1, wherein the anchor piles (1) are uplift anchors having a diameter of 15 cm.
3. The combined type structure demolition and temporary external wall reinforcement construction method according to claim 1, wherein the external protection frame (2) adopts a double-row steel pipe floor scaffold, the diameter of the steel pipe of the external protection frame (2) is 3cm, and the wall thickness is 2 mm.
4. The combined structure demolition and external wall temporary reinforcement construction method according to claim 1, wherein the steel structure protection device is 14# channel steel, the inner and outer grids of the external wall (5) are integrally connected to each other by 14# channel steel, and the grid mesh size formed by the channel steel is 1 x 1 m.
5. The combined type structure demolition and external wall temporary reinforcement construction method according to claim 1, wherein the diagonal brace (3) is fabricated by welding a plurality of light rectangular small square pipes, the square pipes used for fabricating the diagonal brace (3) have a sectional size of 5 x 5cm, a wall thickness of 2mm, and a sectional size of the diagonal brace (3) is 1 x 1 m.
6. Combined structural demolition and temporary reinforcement construction method for external walls according to claim 1, characterized in that the steel pipes in the one-storey hall supporting frames (6) have a diameter of 3cm and a wall thickness of 2 mm.
7. Combined structural demolition and temporary reinforcement construction method for external walls according to claim 1, characterized in that the wall-connecting supports (4) are 14# channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470477.0A CN114737789A (en) | 2022-04-28 | 2022-04-28 | Combined structure dismantling and external wall temporary reinforcing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470477.0A CN114737789A (en) | 2022-04-28 | 2022-04-28 | Combined structure dismantling and external wall temporary reinforcing construction method |
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| Publication Number | Publication Date |
|---|---|
| CN114737789A true CN114737789A (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210470477.0A Pending CN114737789A (en) | 2022-04-28 | 2022-04-28 | Combined structure dismantling and external wall temporary reinforcing construction method |
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| Country | Link |
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| CN (1) | CN114737789A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118207884A (en) * | 2024-05-22 | 2024-06-18 | 北京建工四建工程建设有限公司 | Existing building dismantling and newly-built building foundation pit supporting cross comprehensive construction method |
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| JP2014148845A (en) * | 2013-02-01 | 2014-08-21 | Takenaka Komuten Co Ltd | Outer wall-holding method in construction work accompanied with preservation of existing outer wall |
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| JP2014148845A (en) * | 2013-02-01 | 2014-08-21 | Takenaka Komuten Co Ltd | Outer wall-holding method in construction work accompanied with preservation of existing outer wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118207884A (en) * | 2024-05-22 | 2024-06-18 | 北京建工四建工程建设有限公司 | Existing building dismantling and newly-built building foundation pit supporting cross comprehensive construction method |
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