CN112267659A - Construction method of bolt type I-steel cantilever scaffold - Google Patents
Construction method of bolt type I-steel cantilever scaffold Download PDFInfo
- Publication number
- CN112267659A CN112267659A CN202011153476.0A CN202011153476A CN112267659A CN 112267659 A CN112267659 A CN 112267659A CN 202011153476 A CN202011153476 A CN 202011153476A CN 112267659 A CN112267659 A CN 112267659A
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- Prior art keywords
- steel
- cantilever
- scaffold
- overhanging
- construction
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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
- 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
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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
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/20—Scaffolds essentially supported by building constructions, e.g. adjustable in height supported by 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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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
- E04G5/04—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
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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
- E04G5/16—Struts or stiffening rods, e.g. diagonal rods
Abstract
The invention relates to a construction process of an overhanging scaffold, in particular to a construction method of a bolt type I-steel overhanging scaffold. The method improves the section steel type cantilever scaffold, adopts bolt fixation and steel wire rope unloading, and enables the cantilever scaffold to achieve the capacity of bearing self weight and construction working face load. This cantilever frame structure is simple, convenient operation, has reduced the steel pipe use amount for console mode scaffold, practices thrift the cost, and uses on assembly type structure for the first time, has solved the difficult problem that assembly type structure cantilever scaffold was under construction. The traditional profile steel type overhanging scaffold needs to be anchored in a floor to realize the load bearing capacity, and finally, the invention adopts a bolt type I-steel overhanging scaffold without anchoring length. The cantilever I-shaped steel is high in turnover rate, construction cost is saved, construction site is saved, and construction progress is accelerated.
Description
Technical Field
The invention relates to a construction process of an overhanging scaffold, in particular to a construction method of a bolt type I-steel overhanging scaffold.
Background
With the continuous development of the construction industry, China pays more and more attention to the aspects of energy consumption, environmental protection and the like of the construction industry. The assembled building is a necessary trend for the development of the building industry in China by virtue of the advantages of safety, energy conservation, environmental protection, sustainable development and the like, and is a necessary way for realizing transformation and upgrading of the building industry and maintaining continuous and healthy development. In order to improve the core competitiveness, a new industry mode, namely prefabricated assembled buildings, is produced.
As is well known, in the construction of high-rise building structures, there are many methods for building external scaffolds, among which the most common are double-row floor type steel pipe scaffolds and section steel cantilever type scaffolds. The double-row floor type steel pipe scaffold material has low turnover rate, higher cost and long erection period, and influences the waterproof and backfill construction of the underground structure. Therefore, people can project eyes to the steel type overhanging scaffold, the assembly is simple and convenient, the scaffold is erected in a subsection mode, dismantled in a subsection mode and turned around in a subsection mode along the height direction, a large amount of material cost of the renting scaffold is saved, and the construction period of underground structure water prevention and backfilling is shortened. But the shaped steel type overhanging scaffold uses the premise that the shaped steel needs to be anchored for a certain length on a floor slab, and is suitable for a cast-in-place shear wall structure of a windowless lower wall body. The prefabricated wall is adopted as the assembled building wall body and is a windowed lower wall body, so that the section steel type overhanging scaffold is not applicable any more.
Disclosure of Invention
The invention provides a construction method of a bolt type I-steel cantilever scaffold with strong universality and operability, which aims to solve the problem that an assembled building section steel cantilever scaffold cannot be used.
The invention is realized by adopting the following technical scheme: the construction method of the bolt type I-steel cantilever scaffold comprises the steps of processing and shaping cantilever I-steel, connecting the cantilever I-steel with a wall body by adopting bolts, and carrying out inclined pulling and unloading on a steel wire rope to achieve the capacity of bearing the self weight of the scaffold and the load of a construction working face; the construction method specifically comprises the following steps:
(1) preparation work: welding a rear embedded plate at one end of the overhanging I-shaped steel, reserving a fixing bolt hole on the embedded plate, and welding an ear plate at the other end of the overhanging I-shaped steel; when the scaffold overhanging layer prefabricated wall is manufactured and processed, a hole position connected with an overhanging I-shaped steel bolt and a steel wire rope unloading hole are reserved;
(2) installing overhanging I-shaped steel: after the construction of the cantilever layer is completed, placing the end part of one side of the processed cantilever I-shaped steel at the position of a corresponding connecting hole of the prefabricated wall body, pasting a buried plate on the wall surface of the prefabricated wall body, fixing the cantilever I-shaped steel and the wall body by using a bolt, and finally forming a cantilever I-shaped steel bearing layer surrounding the cantilever layer for one circle on the cantilever layer;
(3) installing I-shaped steel: then placing two rows of I-beams on the upper parts of the overhanging I-beams according to the distance between the scaffolds for erecting the overhanging scaffolds;
(4) installing scaffold socket type bases on the two rows of I-shaped steels;
(5) erecting a scaffold;
(6) and (3) cable-stayed steel wire ropes: and finally, connecting the overhanging I-shaped steel ear plate with the prefabricated wall body by using a steel wire rope, and unloading the inclined drawing of the overhanging I-shaped steel.
The construction method of the bolt type I-steel overhanging scaffold solves the difficult problem of construction of the overhanging scaffold of the fabricated building, effectively shortens the erection period of the scaffold, reduces the using amount of turnover materials of the scaffold, accelerates the construction of backfill soil of a foundation pit and reduces the construction cost. The cantilever scaffold is simple in structure and convenient to operate, reduces the using amount of I-shaped steel, saves cost, is used on an assembly type building for the first time, and solves the problem of construction of the cantilever scaffold of the assembly type building.
According to the construction method of the bolt type I-steel cantilever scaffold, the bolts are used for fixing the cantilever I-steel and the wall body by using the gaskets.
According to the construction method of the bolt type I-steel cantilever scaffold, the surface of the cantilever I-steel is subjected to rust prevention treatment.
The invention has the beneficial effects that:
compared with the traditional construction technology of the section steel type I-steel cantilever scaffold, the construction method has the technical characteristics of strong operability, high construction efficiency, high economic benefit and the like, and solves the problems that the traditional cantilever scaffold is poor in adaptability and cannot be used when meeting an assembly type building through secondary improvement on the section steel type cantilever scaffold. Compare the great saving of console mode scaffold frame and encorbelment a material quantity, material lease expense has obvious reduction, and has shortened underground structure waterproof and backfill construction period, and the beneficial effect of concrete expression is as follows:
1. the operability is strong: the bolt type I-steel overhanging scaffold is used in the fabricated building, so that the construction operation is simple, special tools are not needed, and the maintenance is simple and convenient. After the installation is finished, the bolts are fastened, so that the construction quality is easily ensured; the invention solves the difficult problem that the traditional profile steel type overhanging scaffold has poor adaptability and can not be used in an assembly type building, and the invention is also suitable for a cast-in-place type shear wall structure.
2. The construction efficiency is high: the invention has simple installation for the section steel type I-steel overhanging scaffold, only needs to be fixed by bolts, has high installation speed and high construction efficiency, and is neat and civilized in construction site.
3. The economic benefit is high: need carry out the anchor at the floor to traditional type shaped steel scaffold frame, I-steel material quantity is big, and bolt formula I-steel overhanging scaffold frame does not have anchor length in the floor, has practiced thrift I-steel material, and economic benefits is obvious.
Drawings
FIG. 1 is a construction flow chart of the present invention.
Fig. 2 is a schematic view of an overhanging i-beam.
FIG. 3 is a schematic view of a high tensile bolt.
Fig. 4 is a mounting effect diagram of the cantilever I-shaped steel.
In the figure: 1-overhanging I-shaped steel, 2-buried plate, 3-ear plate, 4-steel wire rope, 5-gasket and 6-prefabricated wall body.
Detailed Description
The project adopts the bolt type overhanging I-steel scaffold, solves the difficult problem of construction of the fabricated building overhanging frame, reduces the construction cost, shortens the construction period, achieves the expected target, and avoids the occurrence of construction that the floor type scaffold can not be used for backfilling.
The invention needs to process and shape the overhanging I-shaped steel, connects with the wall body by adopting a high-strength bolt, and realizes the capacity of bearing the self weight of the scaffold and the load of the construction working face by adding the inclined pulling unloading of the steel wire rope. The steel section type overhanging scaffold is improved, a rear embedded plate is welded at the end part of the steel section, and a fixing bolt hole is reserved on the embedded plate. When the scaffold overhanging layer prefabricated wall is manufactured and processed, a hole position and a steel wire rope unloading hole which are connected with the overhanging I-shaped steel bolt are reserved. After the construction of the cantilever layer is completed, the machined cantilever I-shaped steel is placed at the corresponding position of the prefabricated wall body and is fixed with the wall body through the high-strength bolt. Then, two rows of 10# I-beams are placed on the upper portions of the overhanging I-beams according to the distance between the double rows of scaffolds and used for erecting the overhanging scaffolds. And finally, unloading the inclined cantilever I-shaped steel by using a steel wire rope. The construction method of the bolt type I-steel overhanging scaffold solves the difficult problem of construction of the overhanging scaffold of the fabricated building, effectively shortens the erection period of the scaffold, reduces the using amount of turnover materials of the scaffold, accelerates the construction of backfill soil of a foundation pit and reduces the construction cost.
The application of the construction method provides valuable experience for the construction of the cantilever frame of the fabricated building. Adopt the I-steel that encorbelments of bolt formula, both overcome the difficult problem of encorbelmenting the scaffold frame construction by the assembly type structure, avoided the increase of traditional formula shaped steel scaffold frame cost of encorbelmenting again, when guaranteeing construction quality and safety, improved work efficiency, shortened construction cycle, reduce construction cost. The construction process has positive popularization significance, and is subject to consistent approval and high evaluation of design units, supervision units and government related departments. Has remarkable social benefit.
Claims (3)
1. The construction method of the bolt type I-steel cantilever scaffold is characterized by comprising the following steps of: the I-shaped steel (1) is machined, shaped and cantilever, connected with a wall body by bolts, and added with steel wire rope inclined pulling unloading, so as to achieve the capacity of bearing the self weight of the scaffold and the load of a construction working face; the construction method specifically comprises the following steps:
(1) preparation work: a rear embedded plate (2) is welded at one end of the overhanging I-shaped steel (1), a fixed bolt hole is reserved on the embedded plate (2), and an ear plate (3) is welded at the other end of the overhanging I-shaped steel; when the scaffold overhanging layer prefabricated wall (6) is manufactured, a hole position and a steel wire rope unloading hole which are connected with the overhanging I-shaped steel bolt are reserved;
(2) installing overhanging I-shaped steel: after the construction of the cantilever layer is completed, placing the end part of one side of the processed cantilever I-shaped steel (1) at the position of a corresponding connecting hole of a prefabricated wall body (6), pasting an embedded plate (2) on the wall surface of the prefabricated wall body, fixing the cantilever I-shaped steel and the wall body by using bolts, and finally forming a cantilever I-shaped steel bearing layer surrounding the cantilever layer for one circle on the cantilever layer;
(3) installing I-shaped steel: then placing two rows of I-beams on the upper parts of the overhanging I-beams according to the distance between the scaffolds for erecting the overhanging scaffolds;
(4) installing scaffold socket type bases on the two rows of I-shaped steels;
(5) erecting a scaffold;
(6) and (3) cable-stayed steel wire ropes: and finally, connecting the overhanging joist steel ear plate with the prefabricated wall body by using a steel wire rope (4) to carry out unloading treatment on the inclined drawing of the overhanging joist steel.
2. The construction method of the bolt type I-steel cantilever scaffold according to claim 1, characterized in that: the bolt is used for fixing the cantilever I-shaped steel (1) and the wall body by using the gasket (5).
3. The construction method of the bolt type I-steel cantilever scaffold according to claim 2, characterized in that: and performing rust prevention treatment on the surface of the cantilever I-shaped steel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153476.0A CN112267659A (en) | 2020-10-26 | 2020-10-26 | Construction method of bolt type I-steel cantilever scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153476.0A CN112267659A (en) | 2020-10-26 | 2020-10-26 | Construction method of bolt type I-steel cantilever scaffold |
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| Publication Number | Publication Date |
|---|---|
| CN112267659A true CN112267659A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011153476.0A Pending CN112267659A (en) | 2020-10-26 | 2020-10-26 | Construction method of bolt type I-steel cantilever scaffold |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS183622B2 (en) * | 1970-05-19 | 1978-07-31 | Joris Maes | Platform for suspended scaffold |
| CN105201198A (en) * | 2015-08-28 | 2015-12-30 | 中建四局第三建筑工程有限公司 | Tool-type cantilever beam and construction method thereof |
| CN208604902U (en) * | 2018-07-24 | 2019-03-15 | 武汉建工集团股份有限公司 | One kind can turnover tool formula builder's jack |
| CN110805257A (en) * | 2019-11-18 | 2020-02-18 | 广西途辉建筑工程有限公司 | Flower basket overhanging type section steel bearing beam structure and construction method |
| CN211257759U (en) * | 2019-08-22 | 2020-08-14 | 北京市建筑工程研究院有限责任公司 | Truss type heavy suspension scaffold |
-
2020
- 2020-10-26 CN CN202011153476.0A patent/CN112267659A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS183622B2 (en) * | 1970-05-19 | 1978-07-31 | Joris Maes | Platform for suspended scaffold |
| CN105201198A (en) * | 2015-08-28 | 2015-12-30 | 中建四局第三建筑工程有限公司 | Tool-type cantilever beam and construction method thereof |
| CN208604902U (en) * | 2018-07-24 | 2019-03-15 | 武汉建工集团股份有限公司 | One kind can turnover tool formula builder's jack |
| CN211257759U (en) * | 2019-08-22 | 2020-08-14 | 北京市建筑工程研究院有限责任公司 | Truss type heavy suspension scaffold |
| CN110805257A (en) * | 2019-11-18 | 2020-02-18 | 广西途辉建筑工程有限公司 | Flower basket overhanging type section steel bearing beam structure and construction method |
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Application publication date: 20210126 |