CN113550578A - High-altitude overhanging structure formwork support and upper protection system construction method - Google Patents

High-altitude overhanging structure formwork support and upper protection system construction method Download PDF

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Publication number
CN113550578A
CN113550578A CN202110678656.9A CN202110678656A CN113550578A CN 113550578 A CN113550578 A CN 113550578A CN 202110678656 A CN202110678656 A CN 202110678656A CN 113550578 A CN113550578 A CN 113550578A
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China
Prior art keywords
protection system
construction
altitude
formwork support
cantilever
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CN202110678656.9A
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Chinese (zh)
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李池
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China MCC5 Group Corp Ltd
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China MCC5 Group Corp Ltd
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Priority to CN202110678656.9A priority Critical patent/CN113550578A/en
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    • 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
    • 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
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • 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
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/041Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffolds on roof frameworks or on roofs
    • 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
    • E04G5/00Component parts or accessories for scaffolds
    • E04G5/04Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls

Abstract

A high-altitude cantilever structure formwork support and an upper protection system construction method are characterized by comprising the following steps: a. b, installing an overhanging main beam and a lower inclined strut, c, sealing a frame bottom; d. building a high-altitude overhanging structure template frame body, e, checking and accepting, pouring concrete, f, performing edge protection construction before the inclined roof modeling construction on the upper part of the roof, staggering the heights of the outside vertical rods, continuously connecting the heights and connecting the heights with the newly-increased vertical rods above the cornice into a whole, and making temporary ties to ensure that a protection system is stable and reliable. The high-altitude cantilever structure formwork support and the upper protection system construction method have the advantages that the problems that a high-altitude cantilever structure formwork support system cannot take root and exert strength and a reliable safety protection system cannot be arranged in upper roof modeling construction are solved, a large amount of section steel is not needed, factory processing is adopted, installation is convenient and fast, turnover use can be achieved, quality is guaranteed, and construction safety is guaranteed.

Description

High-altitude overhanging structure formwork support and upper protection system construction method
Technical Field
The invention relates to a template system of a high-altitude cantilever structure, in particular to a template bracket of a high-altitude cantilever structure and a construction method of an upper protection system.
Background
The high-altitude cantilever structure formwork support and the upper protection system bear all loads transmitted during formwork installation and concrete pouring in the construction process, are not only operation platforms, but also safety protection facilities, and are various load bearing systems. The safety of the formwork support system is an important content of building construction safety and also belongs to a subsection project with larger danger exceeding a certain scale in building construction. The main greatest hazards of the use of formwork support systems are overall instability collapse and overturning. It is important to ensure the strength, rigidity and stability of the main beam supported by the frame and the whole frame. In addition, the safety protection system has no root bearing force in the construction process of the inclined roof on the upper part of the cantilever structure, and the safety is often not ensured.
China patent application No. 201520743757.x 'an overhanging type steel formwork support for a high-altitude overhanging structure', adopts I-shaped steel paved on a lower two-layer cast-in-situ slab surface as a main beam, and the main beam is connected through a middle layer in a pulling way. This technical scheme I-steel girder bears two-layer support body load, needs the girder model specification great, and girder anchor end face bears very big load, needs reinforcement treatment, and the installation is inconvenient, and depends on the safety protection system of this support body when this technical scheme does not disclose the roofing molding construction in upper portion.
Chinese patent application No. 201920368942.3 "a template support frame body encorbelments in high altitude", including encorbelmenting shaped steel supporting platform and template support frame, template support frame includes outside template support frame and inside template support frame, the steel supporting platform that encorbelments includes a plurality of upper portions steel girder that encorbelments, the upper portion that the section was encorbelmented to upper portion steel girder is provided with wire rope hanging device, the lower part that the section was encorbelmented to upper portion steel girder is encorbelmented is provided with the bracing device, the anchor has a plurality of lower parts steel girder that encorbelments on the building structure, the bracing device supports and encorbelments on upper portion steel girder and lower part and encorbelments between the steel girder. This technical scheme sets up the steel girder of encorbelmenting from top to bottom, needs a large amount of shaped steel, and upper portion wire rope pulling point needs superstructure concrete segmentation to pour, and the construction is inconvenient, easily causes the water leakage hidden danger, depends on the safety protection system of this support body when also not disclosing upper portion roofing molding construction.
Chinese patent application No. 202010484480.9 "a structure operation support system and construction method encorbelments", it includes supporting platform and scaffold frame, and the template of encorbelmenting is located on the scaffold frame, and the scaffold frame is connected with the construction floor that the structure of encorbelmenting that needs to be under construction belongs to, and supporting platform includes: the supporting beam is arranged along the horizontal direction, the first end of the supporting beam is connected with the lower layer of the overhanging structure to be constructed, the scaffold is pressed against the supporting beam from the upper part, the supporting beam is provided with a plurality of positioning pieces, and the positioning pieces are inserted into the bottom ends of the vertical rods of the scaffold; the first end of the diagonal brace is connected with the lower second layer of the cantilever structure to be constructed, and the second end of the diagonal brace is connected with the second end of the supporting cross beam and used for supporting the cross beam; and the vertical support rods are arranged along the vertical direction, the upper ends of the vertical support rods are connected with the support cross beam, and the lower ends of the vertical support rods are connected with the inclined support rods. This technical scheme supporting beam is for tiling on the cast-in-place face of lower floor, and the volume of required shaped steel is great, depends on the safety protection system of this support body when not disclosing upper portion roofing molding construction.
Therefore, in the prior art, in order to solve the safety problems of the rooting and acting points of the template support system of the high-altitude overhanging structure and the construction of the upper roof modeling, the safety protection system attached to the frame body during the construction of the upper roof modeling is treated to become a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a safe and reliable template support of a high-altitude overhanging structure and a construction method of an upper protection system.
In order to achieve the purpose, the technical solution of the invention is as follows:
the utility model provides a high altitude structure formwork support and upper portion protection system construction method of encorbelmenting, take one deck and two lower layers of boundary beam corresponding position to install the built-in fitting and the connecting bolt of drawing of batch production processing in advance, with girder and bracing member and both ends connecting steel plate of encorbelmenting of batch production processing, reliably connect through the bolt, and before the complicated molding construction of the oblique roofing in upper portion, through outside pole setting extension and concrete placement back eaves mouth upper portion newly-increased pole setting reliably connected, form the safety protection system in the roof work progress in upper portion, its characterized in that includes following step:
a. positioning along with the construction of a main structure of a building in advance, installing an embedded part and reserving a connecting bolt, adopting a split steel plate embedded part, connecting four split tie bars according to the width of a beam and carrying out industrial processing to form the embedded part, accurately positioning according to a special construction scheme, strengthening rechecking and ensuring the accurate position of the embedded part;
b. installing an overhanging main beam and a lower inclined strut; the cantilever structure main beam and the lower section steel diagonal brace are both processed in a factory, connecting steel plates are arranged at both ends of the cantilever structure main beam and the lower section steel diagonal brace, and the connecting steel plates are both reliably connected through bolts; welding a vertical rod positioning and anti-skidding part on the cantilever girder in advance according to the positioning, and welding a steel bar with the diameter of 25mm on the cantilever girder;
c. sealing the frame bottom;
d. erecting a template frame body of a high-altitude overhanging structure; the template frame body of the high-altitude overhanging structure and the template frame body in the same storey are synchronously erected, and the horizontal rod pieces are communicated to form a whole; the outer upright rod rises to 1.2m above the highest point of the operation layer, and the top end of the outer upright rod is obliquely tied with the template frame body by adopting a steel pipe to serve as temporary edge protection;
e. checking and accepting, and pouring concrete;
f. face limit protection construction before the oblique roofing molding construction in roofing upper portion, the outside pole setting is staggered highly and continues to connect high and link into an integrated entity with the newly-increased pole setting in eaves mouth top to make interim drawknot, ensure that the protection system is stable, reliable.
The high-altitude cantilever structure formwork support and the upper protection system construction method can be further realized by adopting the following technical measures.
The method of the preceding, wherein the cantilevered structure is no more than 5m in length.
In the method, the designed unit is required to check the bearing capacity of the overhanging main beam root and the bracing root floor structural beam.
After the technical scheme is adopted, the high-altitude cantilever structure formwork support and the upper protection system construction method have the following advantages:
1. the problem that a template supporting system of a high-altitude overhanging structure cannot take root and exert strength is solved, and the problem that a reliable safety protection system cannot be arranged in the upper roof modeling construction is solved;
2. the engineering quality is safe and reliable, a large amount of profile steel is not needed, the industrial processing is adopted, the installation is convenient, the turnover use is realized, the quality is ensured, and the construction is safe;
3. the construction progress is accelerated, and the engineering cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a formwork support and an upper protection system of a high-altitude cantilever structure according to an embodiment of the present invention.
In the figure: 1, embedding a part; 2, connecting steel plates; 3 connecting bolts; 4, overhanging girder I-steel; 5, a steel pipe supporting system; 6, the upper protective frame body is connected with a wall piece; 7 an upper protection frame body; 8, hanging tiles on the slope; 9, connecting the upper protective frame body with the wall member; 10 supporting the section steel; 11 lower external scaffolding; 12 supporting the profile steel embedded part; 13 connecting the steel plates.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention relates to a high-altitude cantilever structure formwork support and an upper protection system construction method, which comprises the following steps:
a. and (4) positioning and installing embedded parts along with the construction of the main body structure (respectively at the lower second layer and the lower layer) in advance and reserving the connecting bolt.
Fig. 1 is a schematic structural diagram of a formwork support and an upper protection system of a high-altitude cantilever structure according to an embodiment of the present invention. The method is characterized in that a split steel plate embedded part is adopted, four split tie bars are connected according to the width of a beam and are processed in a factory mode (the embedded part is integrated with a connecting bolt), the positioning is accurate according to a special construction scheme, the rechecking is enhanced, and the accurate position of the embedded part is ensured.
b. And installing a cantilever main beam and a lower inclined strut.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a formwork support and an upper protection system of an overhead cantilever structure according to an embodiment of the present invention. As shown in the figure, girder and the lower part shaped steel bracing of encorbelmenting all adopt batch production processing, and both ends all are equipped with connection steel plate, and connection steel plate all reliably connects through the bolt. The vertical rod positioning and the anti-skid part are welded in advance according to the positioning on the cantilever girder, and 25 steel bars are welded on the cantilever girder.
c. Sealing the frame bottom;
d. and erecting a template frame body with a high-altitude overhanging structure.
The template frame body of the high-altitude overhanging structure and the template frame body in the same storey are synchronously erected, and the horizontal rod pieces are communicated to form a whole; the outside upright stanchion rises to 1.2m above the highest point of the operation layer, and the top end adopts a steel pipe to be obliquely connected with the formwork body in a pulling way to be used as temporary edge protection.
e. And (5) checking and accepting and pouring concrete.
f. Face limit protection construction before the oblique roofing molding construction in roofing upper portion, the outside pole setting is staggered highly and continues to connect high and link into an integrated entity with the newly-increased pole setting in eaves mouth top to make interim drawknot, ensure that the protection system is stable, reliable.
The high-altitude overhanging structure formwork support and the upper protection system construction method provided by the invention have the substantial characteristics and obvious technical progress, not only solve the problem that a high-altitude overhanging structure formwork support system cannot take root and exert strength, but also solve the problem that a reliable safety protection system cannot be set in upper roof modeling construction. The invention is to adopt the method that the opposite-pulling embedded parts (comprising connecting bolts) which are processed in factory are arranged in advance at the corresponding positions of the next layer of boundary beam and the next two layers of boundary beams, the opposite-pulling embedded parts are reliably connected with the overhanging main beam and the diagonal bracing member (comprising connecting steel plates at two ends) which are processed in factory through the bolts, and before the complex modeling construction of the upper inclined roof, the opposite-pulling embedded parts are reliably connected with the newly increased vertical rod at the upper part of the cornice after the concrete is poured through the extension of the vertical rod at the outermost side, so as to form the safety protection system in the construction process of the upper roof. Compared with the traditional method, the high-altitude cantilever structure formwork support and the upper protection system construction method do not need a large amount of section steel, are processed in an industrial mode, are convenient to install, can be recycled, ensure the quality and are safe to construct. The high-altitude cantilever structure formwork support and the upper protection system construction method are suitable for solving the problems that the high-altitude cantilever length is not more than 5m and exceeds 5m, and the problems of increasing the section of a main beam and increasing the type and the number of lower supports can be solved on the basis of the high-altitude cantilever structure formwork support and the upper protection system construction method. The bearing capacity of the floor structural beam at the root of the overhanging main beam and the root of the inclined strut needs to be checked and calculated by a design unit.
The template bracket of the high-altitude cantilever structure and the construction method of the upper protection system are applied in the actual engineering project, are convenient to industrially process and install, can be recycled, ensure the quality, are safe to construct, have obvious effects, are consistently recognized by supervision units and construction units, are welcomed by operators, and obtain good economic benefits and social influences.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.

Claims (3)

1. The utility model provides a high altitude structure formwork support and upper portion protection system construction method of encorbelmenting, take one deck and two lower layers of boundary beam corresponding position to install the built-in fitting and the connecting bolt of drawing of batch production processing in advance, with girder and bracing member and both ends connecting steel plate of encorbelmenting of batch production processing, reliably connect through the bolt, and before the complicated molding construction of the oblique roofing in upper portion, through outside pole setting extension and concrete placement back eaves mouth upper portion newly-increased pole setting reliably connected, form the safety protection system in the roof work progress in upper portion, its characterized in that includes following step:
a. positioning along with the construction of a main structure of a building in advance, installing an embedded part and reserving a connecting bolt, adopting a split steel plate embedded part, connecting four split tie bars according to the width of a beam and carrying out industrial processing to form the embedded part, accurately positioning according to a special construction scheme, strengthening rechecking and ensuring the accurate position of the embedded part;
b. installing an overhanging main beam and a lower inclined strut; the cantilever structure main beam and the lower section steel diagonal brace are both processed in a factory, connecting steel plates are arranged at both ends of the cantilever structure main beam and the lower section steel diagonal brace, and the connecting steel plates are both reliably connected through bolts; welding a vertical rod positioning and anti-skidding part on the cantilever girder in advance according to the positioning, and welding a steel bar with the diameter of 25mm on the cantilever girder;
c. sealing the frame bottom;
d. erecting a template frame body of a high-altitude overhanging structure; the template frame body of the high-altitude overhanging structure and the template frame body in the same storey are synchronously erected, and the horizontal rod pieces are communicated to form a whole; the outer upright rod rises to 1.2m above the highest point of the operation layer, and the top end of the outer upright rod is obliquely tied with the template frame body by adopting a steel pipe to serve as temporary edge protection;
e. checking and accepting, and pouring concrete;
f. face limit protection construction before the oblique roofing molding construction in roofing upper portion, the outside pole setting is staggered highly and continues to connect high and link into an integrated entity with the newly-increased pole setting in eaves mouth top to make interim drawknot, ensure that the protection system is stable, reliable.
2. The high altitude cantilever structure formwork support and upper protection system construction method according to claim 1, wherein the cantilever structure length is not more than 5 m.
3. The high altitude cantilever structure formwork support and upper protection system construction method according to claim 1, wherein the cantilever main beam root and the bracing root floor structure beam need to be subjected to design unit checking calculation of bearing capacity.
CN202110678656.9A 2021-06-18 2021-06-18 High-altitude overhanging structure formwork support and upper protection system construction method Pending CN113550578A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215333A (en) * 2022-01-17 2022-03-22 中国建筑一局(集团)有限公司 Rapid construction method for outer cornice of high-rise building
CN114508232A (en) * 2022-02-28 2022-05-17 江苏宜安建设有限公司 Construction process for end cantilever beam of ship type roof frame
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
CN114960954A (en) * 2022-06-24 2022-08-30 中建八局第二建设有限公司 Construction method of high-altitude over-limit cantilever shear wall
CN115075551A (en) * 2022-06-29 2022-09-20 中国十七冶集团有限公司 Construction method of safe and stable cantilever incremental structure high formwork system
CN115233980A (en) * 2022-08-22 2022-10-25 中国十七冶集团有限公司 Overhanging incremental structure arrangement construction method

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Publication number Priority date Publication date Assignee Title
WO1999040274A1 (en) * 1998-02-03 1999-08-12 Skafcorp Pty. Limited Suspended scaffolding
CN105019639A (en) * 2015-05-28 2015-11-04 河南国基建设集团有限公司 Formwork with high cantilever structure and construction method thereof
CN109898821A (en) * 2019-03-21 2019-06-18 陕西建工第九建设集团有限公司 A kind of construction method of high-altitude overhanging template support frame body
CN210316454U (en) * 2019-06-28 2020-04-14 广东建星建造集团有限公司 Large-span roof overhanging support system
CN111236640A (en) * 2020-03-26 2020-06-05 张延年 Structure of encorbelmenting is shared with outer scaffold to high altitude formwork support
CN212002166U (en) * 2020-03-10 2020-11-24 中国建筑第八工程局有限公司 Scaffold supporting structure for large cornice of high-rise building
CN112900853A (en) * 2021-02-25 2021-06-04 中建八局第四建设有限公司 High-altitude ultra-large heavy-load special-shaped overhanging cornice beam slab formwork construction method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999040274A1 (en) * 1998-02-03 1999-08-12 Skafcorp Pty. Limited Suspended scaffolding
CN105019639A (en) * 2015-05-28 2015-11-04 河南国基建设集团有限公司 Formwork with high cantilever structure and construction method thereof
CN109898821A (en) * 2019-03-21 2019-06-18 陕西建工第九建设集团有限公司 A kind of construction method of high-altitude overhanging template support frame body
CN210316454U (en) * 2019-06-28 2020-04-14 广东建星建造集团有限公司 Large-span roof overhanging support system
CN212002166U (en) * 2020-03-10 2020-11-24 中国建筑第八工程局有限公司 Scaffold supporting structure for large cornice of high-rise building
CN111236640A (en) * 2020-03-26 2020-06-05 张延年 Structure of encorbelmenting is shared with outer scaffold to high altitude formwork support
CN112900853A (en) * 2021-02-25 2021-06-04 中建八局第四建设有限公司 High-altitude ultra-large heavy-load special-shaped overhanging cornice beam slab formwork construction method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114215333A (en) * 2022-01-17 2022-03-22 中国建筑一局(集团)有限公司 Rapid construction method for outer cornice of high-rise building
CN114215333B (en) * 2022-01-17 2023-11-24 中国建筑一局(集团)有限公司 Quick construction method for outer cornices of high-rise buildings
CN114508232A (en) * 2022-02-28 2022-05-17 江苏宜安建设有限公司 Construction process for end cantilever beam of ship type roof frame
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
CN114876239B (en) * 2022-05-11 2023-08-18 北京市第三建筑工程有限公司 High-altitude overhanging structure closed protection dismantling system and construction method thereof
CN114960954A (en) * 2022-06-24 2022-08-30 中建八局第二建设有限公司 Construction method of high-altitude over-limit cantilever shear wall
CN115075551A (en) * 2022-06-29 2022-09-20 中国十七冶集团有限公司 Construction method of safe and stable cantilever incremental structure high formwork system
CN115075551B (en) * 2022-06-29 2023-08-25 中国十七冶集团有限公司 Construction method of safe and stable cantilever incremental structure high formwork system
CN115233980A (en) * 2022-08-22 2022-10-25 中国十七冶集团有限公司 Overhanging incremental structure arrangement construction method
CN115233980B (en) * 2022-08-22 2023-08-08 中国十七冶集团有限公司 Cantilever incremental structure arrangement construction method

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