CN114382279A - Construction method of cantilever scaffold suitable for aluminum mould without hole opening - Google Patents

Construction method of cantilever scaffold suitable for aluminum mould without hole opening Download PDF

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Publication number
CN114382279A
CN114382279A CN202111539164.8A CN202111539164A CN114382279A CN 114382279 A CN114382279 A CN 114382279A CN 202111539164 A CN202111539164 A CN 202111539164A CN 114382279 A CN114382279 A CN 114382279A
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CN
China
Prior art keywords
overhanging
construction
scaffold
frame body
wall
Prior art date
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Pending
Application number
CN202111539164.8A
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Chinese (zh)
Inventor
赵亚鹏
黄春峰
柯江华
孔涛涛
牛童
李振彪
谢心谦
王伟华
王丽丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Zhongtian North Construction Co ltd
Zhongtian Construction Group Co Ltd
Original Assignee
Beijing Zhongtian North Construction Co ltd
Zhongtian Construction Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing Zhongtian North Construction Co ltd, Zhongtian Construction Group Co Ltd filed Critical Beijing Zhongtian North Construction Co ltd
Priority to CN202111539164.8A priority Critical patent/CN114382279A/en
Publication of CN114382279A publication Critical patent/CN114382279A/en
Pending legal-status Critical Current

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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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
    • 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
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/18—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by cantilevers or other provisions mounted in openings in the building, e.g. window openings
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/045—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on profiles, e.g. I or H profiles
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls

Abstract

The invention discloses a construction method of an overhanging scaffold suitable for using an aluminum mould without opening holes, which comprises the following steps of firstly, construction preparation; step two, mounting parts; thirdly, welding the positioning steel bars; fourthly, erecting and fixing a scaffold; fifthly, constructing the cantilever layer structure; sixthly, mounting the cantilever girder; according to the invention, a lower overhanging scaffold or a floor scaffold is used for mounting and fixing a connecting beam of a scaffold to be overhung in advance, then an overhanging layer structure is constructed in advance, a through-wall hole is reserved in a wall form, after the overhanging layer form is removed, the through-wall hole is pre-buried through the overhanging layer structure, overhanging main beams are synchronously mounted by using form removal construction time, finally, the mounting of the overhanging scaffold and the construction of the structure have no influence on each other, the process is directly formed, the construction is carried out in advance, and the overall construction period is saved; the invention can install and erect the cantilever frame body under the condition of not influencing the construction of the structural layer, thereby quickening the construction progress and avoiding cutting damage to the aluminum template.

Description

Construction method of cantilever scaffold suitable for aluminum mould without hole opening
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of an overhanging scaffold which is suitable for using an aluminum mould and avoids tapping.
Background
The construction of high-rise residential buildings generally adopts an aluminum mould construction process, and has the advantages of high turnover efficiency, good forming quality and quick dismantling; in the construction process, an outrigger scaffold form is mainly adopted for an outer frame protection system, but when the outrigger scaffold is constructed, the traditional construction method is that an overhanging steel beam is placed on a top plate of an overhanging layer, the construction of an aluminum template is carried out after the binding of wall body reinforcing steel bars is finished, at the moment, because of the existence of the overhanging steel beam, the aluminum template at the corresponding position needs to be cut in advance to reserve a hole, and then the part needs to be blocked independently when the mold is closed, so that the method not only damages the template, reduces the turnover utilization rate of the template, but also increases the construction process and labor input; therefore, it is necessary to invent a construction method of the cantilever scaffold which is suitable for using the aluminum mold without opening the hole.
Disclosure of Invention
The invention aims to provide a construction method of an overhanging scaffold without opening holes by using an aluminum mould, which aims to solve the problems that the aluminum mould is cut and damaged, the turnover utilization rate of a template is reduced, the construction process is increased and the construction progress is influenced in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a construction method of an overhanging scaffold suitable for using an aluminum mould without opening holes comprises the following steps of firstly, construction preparation; step two, mounting parts; thirdly, welding the positioning steel bars; fourthly, erecting and fixing a scaffold; fifthly, constructing the cantilever layer structure; sixthly, mounting the cantilever girder;
in the first step, a construction scheme and drawing deepening design are compiled before construction, the corresponding positions of the lower scaffold upright post and the upper scaffold upright post are determined, and the overhanging main beam and the small cross bar are subjected to collision inspection;
in the second step, the small cross rod at the top of the lower frame body is installed, when the small cross rod at the top of the lower frame body is installed, the top of the small cross rod is ensured to be higher than the overhanging structure layer, the corresponding temporary throwing support of the frame body is installed, and the stability of the top of the frame body is ensured;
in the third step, when a structural layer to be built is constructed and bound to top plate steel bars, installing overhanging scaffold connecting beams, placing U-shaped steel bars on the top plate for positioning steel beams, placing the connecting beams on a small cross bar at the top, placing the connecting beams close to the inner sides of vertical rods of a frame body at the lower part respectively, connecting the connecting beams and the small cross bar by adopting a round steel U-shaped ring, preventing the frame body from collapsing due to the overturning of the I-shaped steel, and welding the steel bars on the connecting beams according to a deepened design drawing after the connecting beams are installed to serve as a bottom positioning and fixing measure of the frame body;
in the fourth step, after the top plate of the structural layer to be built is poured for 10-12 hours, a first step overhanging scaffold is erected on the overhanging connecting beam according to a deepening design drawing, before each vertical rod is inserted, a temporary throwing support is arranged on a reinforcing steel bar connector welded on the overhanging connecting beam in advance according to each four spans;
after the first layer of overhanging scaffold is installed, when wall reinforcing steel bars of an overhanging structural layer to be built are bound, placing an overhanging main beam at a corresponding deepened position, waiting for overhanging installation of an extending wall, embedding a through-wall hole wooden box in a wall formwork at the extending position of the main beam, and then starting structural construction of the overhanging layer;
and in the sixth step, after the construction of the cantilever layer structure is completed, the wall form is used for removing time, the cantilever girder placed on the floor passes through the reserved hole, the alternate construction is realized, the construction period is shortened, the girder passes through the wall body, the front and back movement is stopped after the girder exceeds the outer side connecting beam by 100mm, the steel plate and the U-shaped steel bar are fixed through the bolts, meanwhile, the steel plate cushion plate is used for cushioning below the I-shaped steel, the construction elevation error of the structure top plate is adjusted, and the effect that each cantilever girder is at the same elevation is achieved.
Preferably, in the first step, the load calculation of the top connecting beam and the single-layer frame body is added, and project management personnel and team leaders are handed over.
Preferably, in the second step, the height difference of the overhanging I-beam is adjusted to be a gap, a leveling instrument is used for leveling on the vertical rod, and the flatness is controlled to be 0-10 mm.
Preferably, in the third step, before the connecting beam is installed, the lower frame body is checked and accepted, and the frame body fastener, the wall connecting piece, the cross brace and the like are checked in total.
Preferably, in the fourth step, before setting up the scaffold, the total number is checked whether the wall connecting pieces at the top of the lower frame body are complete or not, and whether the distance between the horizontal rod of the first step and the top of the connecting beam is 0-200 mm or not is checked.
Preferably, in the fifth step, the corresponding deepening position is a position of a U-shaped steel bar reserved on the top plate.
Compared with the prior art, the invention has the beneficial effects that; the method is safe and reliable, the lower overhanging scaffold or the floor scaffold is used for installing and fixing the connecting beam of the scaffold to be overhung in advance, then the overhanging layer structure is constructed in advance, meanwhile, a through-wall hole is reserved in a wall formwork, after the overhanging layer formwork is dismantled, the through-wall hole is pre-embedded through the overhanging layer structure, the overhanging main beam is synchronously installed by utilizing the formwork dismantling construction time, finally, the overhanging scaffold installation and the structure construction are not influenced mutually, the working procedure is directly formed for construction in advance, and the overall construction period is saved; the invention can carry out the installation and erection of the cantilever frame body under the condition of not influencing the construction of the structural layer, quickens the construction progress compared with the traditional process and avoids cutting and damaging the aluminum template.
Drawings
FIG. 1 is a schematic view of the erection of a small cross bar according to the present invention;
FIG. 2 is a schematic view of the attachment of the tie beam of the present invention;
fig. 3 is a schematic view of the erection of the scaffolding of the present invention;
FIG. 4 is a schematic view of the mounting of the cantilever girder of the present invention;
FIG. 5 is a flow chart of the method of the present invention.
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 fig. 1-5, an embodiment of the present invention is shown: a construction method of an overhanging scaffold suitable for using an aluminum mould without opening holes comprises the following steps of firstly, construction preparation; step two, mounting parts; thirdly, welding the positioning steel bars; fourthly, erecting and fixing a scaffold; fifthly, constructing the cantilever layer structure; sixthly, mounting the cantilever girder;
in the first step, a construction scheme and drawing deepening design are compiled before construction, the corresponding positions of the lower scaffold upright post and the upper scaffold upright post are determined, a cantilever main beam and a small cross bar are subjected to collision inspection, load calculation of a top connecting beam and a single-layer scaffold is increased, and project managers and team leaders are subjected to scheme bottom crossing;
in the second step, as shown in fig. 1, a small cross rod at the top of the lower frame body is installed, and when the small cross rod at the top of the lower frame body is installed, the top of the small cross rod is 200mm higher than the overhanging structure layer, the height difference of the overhanging I-steel is 160mm, the gap is adjusted by 40mm, the small cross rod is leveled on the vertical rod by using a level gauge, the flatness is controlled to be 0-10 mm, and the corresponding temporary throwing support of the frame body is installed, so that the stability of the top of the frame body is ensured;
in the third step, as shown in fig. 2, when a structural layer to be built is constructed and bound to steel bars of a top plate, a cantilever scaffold connecting beam is installed, U-shaped steel bars are placed on the top plate to position the steel bars, a lower frame body is checked and accepted before the connecting beam is installed, frame body fasteners, wall connecting pieces, cross braces and the like are checked in a total number mode, the connecting beam is placed on a small cross bar at the top and is respectively clung to the inner sides of vertical rods of the lower frame body, a phi 16 round steel U-shaped ring is adopted to connect the connecting beam with the small cross bar, the frame body is prevented from collapsing due to the fact that I-shaped steel topples, after the connecting beam is installed, steel bars with the length of 25 mm and the length of 200mm are welded on the connecting beam according to a deepened design drawing, and the connecting beam serves as a frame body bottom positioning and fixing measure;
in the fourth step, as shown in fig. 3, after the top plate of the structural layer to be built is poured for 10-12 hours, a first-step overhanging scaffold is erected on the overhanging connecting beam according to a deepening design drawing, before each upright post is inserted, a steel bar connector welded on the overhanging connecting beam is arranged in advance, whether wall connecting parts at the top of a lower frame body are complete or not is checked before the scaffolds are erected, whether the distance between a first-step horizontal rod and the top of the connecting beam is 0-200 mm or not is checked, and a temporary cast support is arranged according to each four spans;
after the first layer of cantilever scaffold is installed, when wall reinforcing steel bars of a cantilever structure layer to be built are bound, placing a cantilever girder at a corresponding deepened position, namely a position of a U-shaped reinforcing steel bar reserved on a top plate, waiting for the cantilever installation of a wall body, embedding a through-wall hole wooden box in a wall body template at the extending position of the girder, and then starting the structural construction of the cantilever layer;
in the sixth step, as shown in fig. 4, after the construction of the cantilever layer structure is completed, the cantilever girder placed on the floor passes through the reserved hole by using the wall formwork dismantling time, so that the insertion construction is realized, the construction period is shortened, the front-back movement is stopped after the girder passes through the wall and exceeds the outer side connecting beam by 100mm, the steel plate with the length x width x thickness of 200mm x 80mm x 10mm and the U-shaped steel bar are fixed through the bolt, and meanwhile, the steel plate mat plate with the thickness of 10mm is used for being cushioned below the I-shaped steel to adjust the construction elevation error of the structural roof, so that the effect that each cantilever girder is at the same elevation is achieved.
Based on the above, the invention has the advantages that the lower overhanging scaffold or the floor scaffold is used for installing and fixing the connecting beam of the scaffold to be overhung in advance, then the main structure of the overhanging layer is constructed in advance, meanwhile, the wooden box with enough size to allow the I-shaped steel beam to penetrate through the wall body is reserved in the wall body formwork, after the formwork of the overhanging layer is removed, the wall penetrating hole is pre-embedded through the overhanging layer structure, the overhanging main steel beam or the tripod is synchronously installed by utilizing the formwork removing construction time, finally, the installation of the overhanging scaffold and the structural construction are not influenced mutually, the direct forming process is constructed in advance, the overall construction period is saved, the overhanging layer structure is constructed in advance, the hole opening on the aluminum mould is avoided when the overhanging structure layer and the overhanging scaffold are constructed together, the effect that the hole opening of the aluminum mould is avoided, the integrity of the formwork is not influenced is achieved, and the construction of the overhanging steel beam and the external frame does not influence the construction process of the main structure, the construction process is optimized, and the popularization and the use are facilitated.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A construction method of an overhanging scaffold suitable for using an aluminum mould without opening holes comprises the following steps of firstly, construction preparation; step two, mounting parts; thirdly, welding the positioning steel bars; fourthly, erecting and fixing a scaffold; fifthly, constructing the cantilever layer structure; sixthly, mounting the cantilever girder; the method is characterized in that:
in the first step, a construction scheme and drawing deepening design are compiled before construction, the corresponding positions of the lower scaffold upright post and the upper scaffold upright post are determined, and the overhanging main beam and the small cross bar are subjected to collision inspection;
in the second step, the small cross rod at the top of the lower frame body is installed, when the small cross rod at the top of the lower frame body is installed, the top of the small cross rod is ensured to be higher than the overhanging structure layer, the corresponding temporary throwing support of the frame body is installed, and the stability of the top of the frame body is ensured;
in the third step, when a structural layer to be built is constructed and bound to top plate steel bars, installing overhanging scaffold connecting beams, placing U-shaped steel bars on the top plate for positioning steel beams, placing the connecting beams on a small cross bar at the top, placing the connecting beams close to the inner sides of vertical rods of a frame body at the lower part respectively, connecting the connecting beams and the small cross bar by adopting a round steel U-shaped ring, preventing the frame body from collapsing due to the overturning of the I-shaped steel, and welding the steel bars on the connecting beams according to a deepened design drawing after the connecting beams are installed to serve as a bottom positioning and fixing measure of the frame body;
in the fourth step, after the top plate of the structural layer to be built is poured for 10-12 hours, a first step overhanging scaffold is erected on the overhanging connecting beam according to a deepening design drawing, before each vertical rod is inserted, a temporary throwing support is arranged on a reinforcing steel bar connector welded on the overhanging connecting beam in advance according to each four spans;
after the first layer of overhanging scaffold is installed, when wall reinforcing steel bars of an overhanging structural layer to be built are bound, placing an overhanging main beam at a corresponding deepened position, waiting for overhanging installation of an extending wall, embedding a through-wall hole wooden box in a wall formwork at the extending position of the main beam, and then starting structural construction of the overhanging layer;
and in the sixth step, after the construction of the cantilever layer structure is completed, the wall form is used for removing time, the cantilever girder placed on the floor passes through the reserved hole, the alternate construction is realized, the construction period is shortened, the girder passes through the wall body, the front and back movement is stopped after the girder exceeds the outer side connecting beam by 100mm, the steel plate and the U-shaped steel bar are fixed through the bolts, meanwhile, the steel plate cushion plate is used for cushioning below the I-shaped steel, the construction elevation error of the structure top plate is adjusted, and the effect that each cantilever girder is at the same elevation is achieved.
2. The construction method of the overhanging scaffold suitable for the aluminum mould free opening of the hole as claimed in claim 1, wherein: in the first step, the load calculation of the top connecting beam and the single-layer frame body is added, and project management personnel and team leaders are handed over to the bottom in a scheme.
3. The construction method of the overhanging scaffold suitable for the aluminum mould free opening of the hole as claimed in claim 1, wherein: and in the second step, the height difference of the overhanging I-shaped steel is adjusted to adjust the gap, a leveling instrument is used for leveling on the vertical rod, and the flatness is controlled to be 0-10 mm.
4. The construction method of the overhanging scaffold suitable for the aluminum mould free opening of the hole as claimed in claim 1, wherein: in the third step, before the connecting beam is installed, the lower frame body is checked and accepted, and the frame body fastener, the wall connecting piece, the cross brace and the like are checked in total.
5. The construction method of the overhanging scaffold suitable for the aluminum mould free opening of the hole as claimed in claim 1, wherein: in the fourth step, before the scaffold is erected, whether the wall connecting pieces at the top of the lower frame body are complete or not is checked, and whether the distance between the horizontal rod of the first step and the top of the connecting beam is 0-200 mm or not is checked.
6. The construction method of the overhanging scaffold suitable for the aluminum mould free opening of the hole as claimed in claim 1, wherein: and in the fifth step, the corresponding deepening position is the position of the U-shaped steel bar reserved on the top plate.
CN202111539164.8A 2021-12-17 2021-12-17 Construction method of cantilever scaffold suitable for aluminum mould without hole opening Pending CN114382279A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111539164.8A CN114382279A (en) 2021-12-17 2021-12-17 Construction method of cantilever scaffold suitable for aluminum mould without hole opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111539164.8A CN114382279A (en) 2021-12-17 2021-12-17 Construction method of cantilever scaffold suitable for aluminum mould without hole opening

Publications (1)

Publication Number Publication Date
CN114382279A true CN114382279A (en) 2022-04-22

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ID=81197293

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111539164.8A Pending CN114382279A (en) 2021-12-17 2021-12-17 Construction method of cantilever scaffold suitable for aluminum mould without hole opening

Country Status (1)

Country Link
CN (1) CN114382279A (en)

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