CN111424948A - Construction method and construction platform for cantilever structure layer of high-rise building - Google Patents

Construction method and construction platform for cantilever structure layer of high-rise building Download PDF

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Publication number
CN111424948A
CN111424948A CN202010343271.2A CN202010343271A CN111424948A CN 111424948 A CN111424948 A CN 111424948A CN 202010343271 A CN202010343271 A CN 202010343271A CN 111424948 A CN111424948 A CN 111424948A
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CN
China
Prior art keywords
overhanging
steel
shaped steel
overlong
formwork system
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202010343271.2A
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Chinese (zh)
Inventor
柏浩
高宝亮
袁明明
李红梅
郑梓辉
郭万喜
肖翔
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.)
China Construction Fourth Engineering Division Corp Ltd
China Construction Fourth Bureau First Construction Engineering Co Ltd
Original Assignee
China Construction Fourth Engineering Division Corp Ltd
China Construction Fourth Bureau First Construction Engineering 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 China Construction Fourth Engineering Division Corp Ltd, China Construction Fourth Bureau First Construction Engineering Co Ltd filed Critical China Construction Fourth Engineering Division Corp Ltd
Priority to CN202010343271.2A priority Critical patent/CN111424948A/en
Publication of CN111424948A publication Critical patent/CN111424948A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/18Scaffolds 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/066Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for overhangs

Abstract

The invention discloses a construction method and a construction platform for an overhanging structural layer of a high-rise building, wherein a connecting steel plate for fixing an overlong overhanging I-shaped steel formwork system is pre-embedded during the construction of a lower two-layer main structure of the overhanging structural layer; then manufacturing an overlong overhanging I-steel formwork system by adopting I-steel; after concrete of the lower two layers of main structures of the overhanging structural layer is poured and fully solidified, fixedly connecting the overlong overhanging I-shaped steel formwork system with the pre-buried connecting steel plate; laying a template on the top surface of the overlong overhanging I-shaped steel formwork system and fixedly connecting the template with the overlong overhanging I-shaped steel formwork system; and erecting a scaffold on the top surface of the template to serve as a construction platform of the cantilever structure layer. The construction method changes the construction mode that the scaffold needs to be erected from the ground in the prior art, and avoids the influence on garden and small-city construction in a field before the floor type full scaffold is dismantled; and a large amount of steel pipes required for supporting the scaffold are saved, and the method has the characteristics of high construction speed and low construction difficulty.

Description

Construction method and construction platform for cantilever structure layer of high-rise building
Technical Field
The invention relates to a construction method and a construction platform for a cantilever structure layer of a high-rise building, and belongs to the technical field of building engineering.
Background
With the rapid development of the building industry, in order to meet the requirements of the facade effect in some projects, the cantilever concrete structure of a high-rise building, in particular to the cantilever curtain wall structure, is all the same. If the full hall scaffold mode construction of adopting prior art has the cycle length, the construction degree of difficulty is big, can not have enough to meet the need, needs great construction site and more manpower to it is great to follow-up gardens municipal works's construction period influence. Thus, the prior art still has deficiencies and needs further improvement.
Disclosure of Invention
The invention aims to provide a construction method and a construction platform for a cantilever structure layer of a high-rise building, which are used for solving the problems of long period, high construction difficulty, large occupied construction site and more manpower existing in the construction mode of the existing full framing scaffold, and solving the problem of great influence on the construction period of subsequent garden municipal engineering, thereby overcoming the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a construction method of an overhanging structural layer of a high-rise building, which is characterized in that a connecting steel plate for fixing an overlong overhanging I-shaped steel formwork system is pre-embedded when the lower two layers of main structures of the overhanging structural layer are constructed; then manufacturing an overlong overhanging I-steel formwork system by adopting I-steel; after concrete of the lower two layers of main structures of the overhanging structural layer is poured and fully solidified, fixedly connecting the overlong overhanging I-shaped steel formwork system with the pre-buried connecting steel plate; then, laying a template on the top surface of the overlong overhanging I-shaped steel formwork system and fixedly connecting the template with the overlong overhanging I-shaped steel formwork system; and erecting a scaffold on the top surface of the template to serve as a construction platform of the cantilever structure layer, and constructing the cantilever structure layer of the high-rise building through the construction platform.
The construction platform of the cantilever structure layer of the high-rise building, which is formed according to the method, comprises a lower two-layer main structure arranged below the cantilever structure layer of the high-rise building, wherein a connecting steel plate is pre-embedded in the lower two-layer main structure, and an ultra-long cantilever I-steel formwork system is fixedly connected to the connecting steel plate; the top surface of the overlong overhanging I-shaped steel formwork system is paved with a formwork, and a scaffold used as a construction platform of an overhanging structure layer is erected on the top surface of the formwork.
In the construction platform of the cantilever structure layer of the high-rise building, the overlong cantilever I-shaped steel formwork system comprises a group of overlong cantilever I-shaped steels; welding the overlong overhanging I-shaped steel into a latticed supporting plane through a group of transverse I-shaped steel; a group of upright posts are vertically welded in the middle of the overlong overhanging I-shaped steel, and a group of diagonal bracing I-shaped steel is arranged between the lower end of each upright post and the overlong overhanging I-shaped steel and the transverse I-shaped steel; the upper end and the lower end of the upright post are connected through a group of transverse connecting beams.
In the construction platform of the cantilever structure layer of the high-rise building, the group of overlong cantilever I-beams and the group of transverse I-beams respectively comprise main I-beams with larger section sizes and auxiliary I-beams with smaller section sizes; the upright column and the diagonal bracing I-steel are welded with the main I-steel.
In the construction platform of the cantilever structure layer of the high-rise building, the connecting steel plate is provided with a group of high-strength bolts, and the group of high-strength bolts penetrate through the connecting holes in the upright post and the diagonal bracing I-steel to be fixedly connected with the overlong cantilever I-steel formwork system.
In the construction platform of the overhanging structure layer of the high-rise building, a scaffold is erected by adopting a steel pipe and a pipe buckle; the lower end of a vertical pipe of the scaffold is erected on the top surface of a template corresponding to the intersection of the overlong overhanging I-steel and the transverse I-steel; the scaffold is fixedly connected with the wall body of the building main body through the wall supporting rod.
Due to the adoption of the technical scheme, compared with the prior art, the invention adopts the overlong overhanging I-steel formwork system as the basic platform of the scaffold, and the scaffold is erected on the top surface of the overlong overhanging I-steel formwork system; the construction mode that the scaffold needs to be erected from the ground in the prior art is changed, and the influence on garden and small-city construction in a field before the floor type full scaffold is dismantled is avoided; and a large amount of steel pipes required for supporting the scaffold are saved, and the method has the characteristics of high construction speed and low construction difficulty.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an ultra-long overhanging I-steel formwork system of the invention;
FIG. 3 is a front view of FIG. 2;
fig. 4 is a right side view of fig. 3.
The figures are labeled as follows: 1-overhanging structural layer, 2-lower two-layer main structure, 3-super long overhanging I-steel formwork system, 4-connecting steel plate, 5-formwork, 6-scaffold, 7-super long overhanging I-steel, 8-transverse I-steel, 9-upright post, 10-diagonal bracing I-steel, 11-transverse connecting beam, 12-high strength bolt, 13-vertical pipe and 14-wall.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention relates to a construction method of a cantilever structure layer of a high-rise building, which is characterized in that a connecting steel plate 4 for fixing an overlong cantilever I-shaped steel formwork system 3 is pre-embedded when a lower two-layer main structure 2 of the cantilever structure layer 1 is constructed as shown in figure 1; then, manufacturing an overlong overhanging I-steel formwork system 3 by adopting I-steel; after concrete pouring of the lower two layers of main structures 2 of the overhanging structural layer 1 is completed and fully solidified, fixedly connecting the overlong overhanging I-shaped steel formwork system 3 with the pre-buried connecting steel plate 4; then, a template 5 is laid on the top surface of the overlong overhanging I-shaped steel formwork system 3 and is fixedly connected with the overlong overhanging I-shaped steel formwork system 3; and erecting a scaffold 6 on the top surface of the template 5 as a construction platform of the cantilever structure layer 1, and constructing the cantilever structure layer of the high-rise building through the construction platform.
The construction platform of the overhanging structural layer of the high-rise building, which is formed according to the method, comprises a lower two-layer main structure 2 arranged below the overhanging structural layer 1 of the high-rise building, wherein a connecting steel plate 4 is pre-embedded on the lower two-layer main structure 2, and an overlong overhanging I-shaped steel formwork system 3 is fixedly connected on the connecting steel plate 4; a template 5 is laid on the top surface of the overlong overhanging I-steel formwork system 3, and a scaffold 6 used as a construction platform of the overhanging structural layer 1 is laid on the top surface of the template 5; the overlong overhanging I-steel formwork system 3 comprises a group of overlong overhanging I-steel 7 as shown in figures 2-4; the overlong overhanging I-shaped steel 7 is welded by a group of transverse I-shaped steel 8 to form a latticed supporting plane; a group of upright posts 9 are vertically welded in the middle of the overlong overhanging I-shaped steel 7, and a group of inclined strut I-shaped steel 10 is arranged between the lower end of each upright post 9 and the overlong overhanging I-shaped steel 7 and the transverse I-shaped steel 8; the upper end and the lower end of the upright post 9 are connected through a group of transverse connecting beams 11. The group of overlength overhanging I-beams 7 and the group of transverse I-beams 8 both comprise main I-beams with larger section sizes and auxiliary I-beams with smaller section sizes; the upright post 9 and the diagonal bracing I-steel 10 are welded with the main I-steel. The connecting steel plate 4 is provided with a group of high-strength bolts 12, and the group of high-strength bolts 12 penetrate through connecting holes in the upright posts 9 and the inclined strut I-shaped steel 10 to be fixedly connected with the overlong cantilever I-shaped steel formwork system 3. The scaffold 6 is built by adopting steel pipes and pipe buckles; the lower end of a vertical pipe 13 of the scaffold 6 is erected on the top surface of a template corresponding to the intersection of the overlong overhanging I-shaped steel 7 and the transverse I-shaped steel 8; the scaffold 6 is fixedly connected with the wall 14 of the building main body through a wall support rod.
In specific implementation, the invention adopts a basic platform structure formed by combining an overlong overhanging I-steel formwork system and a scaffold in the prior art. The length of the overlong overhanging I-steel in the overhanging I-steel formwork system is 6.5m, and 9m overlong overhanging I-steel is adopted at a local corner position. The supporting system of the cantilever structure layer is built by using the overlong cantilever I-shaped steel formwork system, and the supporting system of the cantilever structure layer is used as a scaffold for cantilever curtain wall construction after the construction of the cantilever structure layer is completed.
The method adopts the overlong overhanging I-shaped steel formwork system as a basic platform of the scaffold, and the scaffold is erected on the top surface of the overlong overhanging I-shaped steel formwork system; the construction mode that the scaffold needs to be erected from the ground in the prior art is changed, and the influence on garden and small-city construction in a field before the floor type full scaffold is dismantled is avoided; and a large amount of steel pipes required for supporting the scaffold are saved, and the method has the characteristics of high construction speed and low construction difficulty.

Claims (7)

1. A construction method of a cantilever structure layer of a high-rise building is characterized by comprising the following steps: the method comprises the steps that a connecting steel plate for fixing an overlong overhanging I-shaped steel formwork system is pre-buried when a lower two-layer main structure of an overhanging structural layer is constructed; then manufacturing an overlong overhanging I-steel formwork system by adopting I-steel; after concrete of the lower two layers of main structures of the overhanging structural layer is poured and fully solidified, fixedly connecting the overlong overhanging I-shaped steel formwork system with the pre-buried connecting steel plate; then, laying a template on the top surface of the overlong overhanging I-shaped steel formwork system and fixedly connecting the template with the overlong overhanging I-shaped steel formwork system; and erecting a scaffold on the top surface of the template to serve as a construction platform of the cantilever structure layer, and constructing the cantilever structure layer of the high-rise building through the construction platform.
2. A construction platform of a high-rise building overhanging structural layer formed according to the method of claim 1, comprising a lower two-layer main structure (2) arranged below the overhanging structural layer (1) of the high-rise building, characterized in that: connecting steel plates (4) are embedded in the lower two layers of main structures (2), and an ultra-long overhanging I-shaped steel formwork system (3) is fixedly connected to the connecting steel plates (4); the top surface of the overlong overhanging I-shaped steel formwork system (3) is paved with a formwork (5), and a scaffold (6) used as a construction platform of the overhanging structural layer (1) is erected on the top surface of the formwork (5).
3. The construction platform of the cantilever structure layer of the high-rise building according to claim 2, wherein: the overlong overhanging I-shaped steel formwork system (3) comprises a group of overlong overhanging I-shaped steels (7); the overlong overhanging I-shaped steel (7) is welded by a group of transverse I-shaped steel (8) to form a latticed supporting plane; a group of upright posts (9) are vertically welded in the middle of the overlong overhanging I-shaped steel (7), and a group of inclined strut I-shaped steel (10) is arranged between the lower ends of the upright posts (9) and the overlong overhanging I-shaped steel (7) and the transverse I-shaped steel (8); the upper end and the lower end of the upright post (9) are connected through a group of transverse connecting beams (11).
4. The construction platform of the cantilever structure layer of the high-rise building according to claim 3, wherein: the overlong overhanging I-shaped steel (7) and the transverse I-shaped steel (8) comprise main I-shaped steel with larger section size and auxiliary I-shaped steel with smaller section size; the upright post (9) and the diagonal bracing I-steel (10) are respectively welded with main I-steel of the overlong overhanging I-steel (7) or the transverse I-steel (8).
5. The construction platform of the cantilever structure layer of the high-rise building according to claim 3, wherein: a group of high-strength bolts (12) are arranged on the connecting steel plate (4), and the group of high-strength bolts (12) penetrate through connecting holes in the upright posts (9) and the diagonal bracing I-steel (10) to fixedly connect the overlong cantilever I-steel formwork system (3) with the connecting steel plate (4).
6. The construction platform of the cantilever structure layer of the high-rise building according to claim 3, wherein: a group of high-strength bolts (12) are arranged on the connecting steel plate (4), and the group of high-strength bolts (12) penetrate through connecting holes in the upright posts (9) and the diagonal bracing I-steel (10) to fixedly connect the overlong cantilever I-steel formwork system (3) with the connecting steel plate (4).
7. The construction platform of the cantilever structure layer of the high-rise building according to claim 3, wherein: the scaffold (6) is formed by connecting a steel pipe and a pipe buckle; the lower end of a vertical pipe (13) of the scaffold (6) is erected on the top surface of a template corresponding to the intersection of the overlong overhanging I-shaped steel (7) and the transverse I-shaped steel (8); the scaffold (6) is fixedly connected with a wall body (14) of the building main body through a wall supporting rod.
CN202010343271.2A 2020-04-23 2020-04-23 Construction method and construction platform for cantilever structure layer of high-rise building Pending CN111424948A (en)

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Application Number Priority Date Filing Date Title
CN202010343271.2A CN111424948A (en) 2020-04-23 2020-04-23 Construction method and construction platform for cantilever structure layer of high-rise building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010343271.2A CN111424948A (en) 2020-04-23 2020-04-23 Construction method and construction platform for cantilever structure layer of high-rise building

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112175638A (en) * 2020-09-01 2021-01-05 中冶天工集团有限公司 Coke oven double-layer resistance wall construction structure and construction method thereof
CN113931430A (en) * 2021-12-01 2022-01-14 中国十七冶集团有限公司 High-altitude overhanging structure curtain wall installation and construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112175638A (en) * 2020-09-01 2021-01-05 中冶天工集团有限公司 Coke oven double-layer resistance wall construction structure and construction method thereof
CN113931430A (en) * 2021-12-01 2022-01-14 中国十七冶集团有限公司 High-altitude overhanging structure curtain wall installation and construction method

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