CN102733606A - Construction method of high large cantilever structure - Google Patents

Construction method of high large cantilever structure Download PDF

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Publication number
CN102733606A
CN102733606A CN201110088550XA CN201110088550A CN102733606A CN 102733606 A CN102733606 A CN 102733606A CN 201110088550X A CN201110088550X A CN 201110088550XA CN 201110088550 A CN201110088550 A CN 201110088550A CN 102733606 A CN102733606 A CN 102733606A
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China
Prior art keywords
steel
cantilever
construction
shaped steel
load
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CN201110088550XA
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CN102733606B (en
Inventor
孙晓阳
颜卫东
陈思
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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Abstract

The invention discloses a construction method of a high large cantilever structure, which belongs to construction methods of a high building beam, and particular relates to a construction method with a modeled large cantilever beam. The construction method of the high large cantilever structure adopts the technical scheme that a structural floor under an external cantilever beam is provided with external cantilever U-steel or an H-shaped steel, and the edge of the structure is additionally provided with a reversed structural beam and the U-steel or the H-shaped steel to pour concrete on site so as to enhance the stability of the section steel and bear transmission load of the cantilever structure; the lower part of the structure is additionally provided with an inclined U-steel support, and the middle part of the structure is additionally provided with inclined U-steel, so that a triangular rack with a steel structure is formed; and auxiliary beam U-steel is erected on the triangular rack with the steel structure, and finally, the auxiliary beam U-steel is provided with a common steel pipe fastening type framework to bear the load from all the directions so as to bear all the load of an upper cantilever beam; and the reversed structural beam is disassembled after the construction. The construction method of the high large cantilever structure solves the problems that the large cantilever structure of a high building has long cantilever and large load, and a support system is hard to choose. The construction method is suitable for the construction of the large cantilever structure, wherein the height of the external cantilever is more than 40m, and the external cantilever span is within the scope from 2.0m to 6.0m.

Description

The job practices of the big cantilevered structure in high-altitude
Affiliated technical field
The invention belongs to high vacant building beam slab job practices, especially have the job practices of the high vacant building beam slab of big cantilevered structure.
Background technology
At present; High speed development along with economic construction and urbanization; The high level of different modeling or super highrise building be flickering rising sheer from level ground promptly in each big and medium-sized cities; A lot of buildings are in order to make widely known the building individual character and to show the rich and varied of moulding, often adopt the high-altitude gimmick of encorbelmenting greatly to be encorbelmented outside the architectural plane in a certain floor in high-altitude or roof, make it the significant scenery together that moulding becomes urban architecture.The position terrain clearance of encorbelmenting in this design more than 40m, is chosen length outward and is reached 2.0m~6.0m usually, and it makes, and building is glorious, solid is abundant, majestic appearance is broken out.Simultaneously, the design of these individual characteies has also brought all difficult problems for the construction of building, its span greatly, highly high, load is big, difficulty is high characteristics; The words of leaning on the formwork-support system of conventional method to accomplish; Difficulty is big, and safety factor is not high, longer duration; And disposable having high input, with high costs.
Summary of the invention
To a difficult problem of the prior art, the purpose of this invention is to provide the job practices of the big cantilevered structure in a kind of high-altitude, it can guarantee construction safety, can guarantee workmanship again, can also practice thrift construction fund greatly.
The objective of the invention is to realize like this: the job practices of the big cantilevered structure in high-altitude, comprise conventional assembling reinforcement, install template; Under the template support system is set, concreting, the demoulding; Operations such as concrete curing, its special feature is: described form bracing system has adopted a kind of job practices of steel girder platform, and promptly next structure floor place of bridging piece establishes outer choose channel-section steel or H shaped steel according to the superstructure load by a determining deviation outside; Adopt round steel to make fixedly shaped steel of three road clips, clip through-flooring and steel plate welding are fixing, and increase the structure reversed beam with channel-section steel or the cast-in-situ concrete of H shaped steel on the structure limit; Consolidate the stability of shaped steel and bear cantilevered structure transmission load, the bottom increases the channel-section steel diagonal brace and the middle part increases oblique kerve steel, forms the steel work tripod; On the steel tripod, set up time crossbeam channel-section steel or H shaped steel by a determining deviation again according to structural load; After the degree of disturbing that waiting after construction finishes conducts oneself with dignity produces is static, on inferior crossbeam channel-section steel or H shaped steel, set up common steel tube fastener type bracing frame, comprehensive load-bearing at last; Bear top all loads of beam slab of encorbelmenting, the structure reversed beam is removed in the construction back that finishes.This method is landed the scaffold support system with tradition and is changed high-altitude steel girder platform support system into; Because need not set up the support system of the beam slab of encorbelmenting from ground, formwork-support directly falls within on the firm high-altitude steel girder platform, so can simplify construction technology; Improve efficiency of construction; Reduce cost, increase safety factor, reached the object of the invention.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the shaped steel layout plan of encorbelmenting
Fig. 2 is encorbelment shaped steel and time crossbeam channel-section steel or H shaped steel sketch map
Fig. 3 is the condition of construction sketch map of the big cantilevered structure in high-altitude
Fig. 4 is the organigram of end anchorage round steel
Fig. 5 is the structure reversed beam structural section of anchoring shaped steel
Fig. 6 is the organigram of diagonal brace shaped steel
Fig. 7 is diagonal brace shaped steel and structure joint construction sketch map
Fig. 8 is the diagonal brace shaped steel and the shaped steel connected node sketch map of encorbelmenting
Fig. 9 is middle part inclined-pulling type steel and structure connected node organigram
Figure 10 is the layout plan of supporting steel pipe at the bottom of the plate
Figure 11 is the layout plan of supporting steel pipe at the bottom of the beam
Figure 12 is the organigram that outside scaffold is connected with structure
The specific embodiment
Like Fig. 1, shown in 3; The present invention is the big cantilevered structure job practices in a kind of high-altitude: will encorbelment shaped steel by a determining deviation along architectural appearance horizontally after, with the welding of round steel (Fig. 4) through-flooring, and pouring structure reversed beam (Fig. 5) is fixed; Lay the bottom diagonal brace (Fig. 6,7) and the shaped steel welding (Fig. 8) of encorbelmenting; Lay middle part inclined-pulling type steel (Fig. 9) and diagonal brace welding, treat that structural concrete strength meets the demands after, on shaped steel, set up time crossbeam channel-section steel or H shaped steel (Fig. 2) by a determining deviation; On inferior crossbeam channel-section steel or H shaped steel, set up common steel tube fastener type bracing frame (Figure 10,11) at last; And set up steel pipe scaffold in the outside, scaffold adopts built-in fitting to be connected (Figure 12) with structure, guarantees stability.The structure reversed beam is removed after construction finishes.

Claims (2)

1. the job practices of the big cantilevered structure in high-altitude: comprise assembling reinforcement, install template, under the template support system is set; Concreting, the demoulding, operations such as concrete curing; It is characterized in that: described form bracing system has adopted a kind of job practices of steel girder platform, and promptly next structure floor place of bridging piece establishes outer choose channel-section steel or H shaped steel according to the superstructure load by a determining deviation outside, adopts round steel to make fixedly shaped steel of three road clips; Clip through-flooring and steel plate welding are fixing, and increase the structure reversed beam with channel-section steel or the cast-in-situ concrete of H shaped steel on the structure limit, consolidate the stability of shaped steel and bear cantilevered structure transmission load; The bottom increases channel-section steel or shaped steel diagonal brace and middle part and increases oblique kerve steel or shaped steel; Form the steel work tripod, on the steel tripod, set up time crossbeam channel-section steel or H shaped steel by a determining deviation again, after the degree of disturbing that produces of waiting to conduct oneself with dignity after construction finishes is static according to structural load; On inferior crossbeam channel-section steel or shaped steel, set up common steel tube fastener type bracing frame at last; Top all loads of beam slab of encorbelmenting are born in comprehensive load-bearing, and the structure reversed beam is removed in the construction back that finishes.
2. job practices according to claim 1; It is characterized in that: described three road clips; Preceding twice are imbedded in the underfloor placing of reinforcement net sheet in advance, build with floorslab concrete, and the 3rd road clip treats that structural strength reaches back floor perforation and adopts the welding of 300 * 300mm iron plate fixing.
CN201110088550.XA 2011-04-08 2011-04-08 The construction method of High Large Cantilever structure Active CN102733606B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201110088550.XA CN102733606B (en) 2011-04-08 2011-04-08 The construction method of High Large Cantilever structure

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Application Number Priority Date Filing Date Title
CN201110088550.XA CN102733606B (en) 2011-04-08 2011-04-08 The construction method of High Large Cantilever structure

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CN102733606A true CN102733606A (en) 2012-10-17
CN102733606B CN102733606B (en) 2015-09-30

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306479A (en) * 2013-07-09 2013-09-18 中国中铁航空港建设集团有限公司海南分公司 Long-length overhang trusswork high form hanger system
CN103388310A (en) * 2013-08-09 2013-11-13 北京市公路桥梁建设集团有限公司 Single-point fixing adjustable cantilever tripod
CN103669845A (en) * 2013-12-26 2014-03-26 常州第一建筑集团有限公司 High-altitude long-span overhung cornice formwork supporting system and constructing method thereof
CN103993735A (en) * 2014-06-06 2014-08-20 山东义泰建设工程有限公司 Support system of roof inclined beam and slab cantilever structure and construction method of support system
CN104989092A (en) * 2015-05-28 2015-10-21 杭州江润科技有限公司 Construction method of high-altitude overhang superposition type steel truss bearing platform
CN104989097A (en) * 2015-05-27 2015-10-21 晟通科技集团有限公司 Reverse beam overhanging template device
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
CN105626138A (en) * 2015-12-31 2016-06-01 中国建筑第八工程局有限公司 Precipice escape way structure and construction method thereof
CN105971110A (en) * 2016-05-30 2016-09-28 中冶东北建设(沈阳)工程技术有限公司 Construction method for fire control corridor steel structure supporting system
CN106337555A (en) * 2016-09-26 2017-01-18 山东金城建设有限公司 Method for constructing triangular steel support for cantilever structure of outer wall of building
CN107165281A (en) * 2017-06-20 2017-09-15 中国华西企业有限公司 A kind of high-altitude long-span overhung steel platform mould bases construction
CN110318460A (en) * 2019-07-23 2019-10-11 中冶建工集团有限公司 A kind of construction method of inverted steps shape different formed steel construction

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306479A (en) * 2013-07-09 2013-09-18 中国中铁航空港建设集团有限公司海南分公司 Long-length overhang trusswork high form hanger system
CN103388310A (en) * 2013-08-09 2013-11-13 北京市公路桥梁建设集团有限公司 Single-point fixing adjustable cantilever tripod
CN103669845A (en) * 2013-12-26 2014-03-26 常州第一建筑集团有限公司 High-altitude long-span overhung cornice formwork supporting system and constructing method thereof
CN103669845B (en) * 2013-12-26 2015-11-25 常州第一建筑集团有限公司 High-altitude long-span overhung cornice formwork bracing system and construction method thereof
CN103993735A (en) * 2014-06-06 2014-08-20 山东义泰建设工程有限公司 Support system of roof inclined beam and slab cantilever structure and construction method of support system
CN104989097A (en) * 2015-05-27 2015-10-21 晟通科技集团有限公司 Reverse beam overhanging template device
CN104989092A (en) * 2015-05-28 2015-10-21 杭州江润科技有限公司 Construction method of high-altitude overhang superposition type steel truss bearing platform
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
CN104989092B (en) * 2015-05-28 2017-03-01 杭州江润科技有限公司 A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform
CN105019639B (en) * 2015-05-28 2017-07-14 河南国基建设集团有限公司 Overhead cantilever formwork and its construction method
CN105626138A (en) * 2015-12-31 2016-06-01 中国建筑第八工程局有限公司 Precipice escape way structure and construction method thereof
CN105971110A (en) * 2016-05-30 2016-09-28 中冶东北建设(沈阳)工程技术有限公司 Construction method for fire control corridor steel structure supporting system
CN106337555A (en) * 2016-09-26 2017-01-18 山东金城建设有限公司 Method for constructing triangular steel support for cantilever structure of outer wall of building
CN107165281A (en) * 2017-06-20 2017-09-15 中国华西企业有限公司 A kind of high-altitude long-span overhung steel platform mould bases construction
CN110318460A (en) * 2019-07-23 2019-10-11 中冶建工集团有限公司 A kind of construction method of inverted steps shape different formed steel construction

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Inventor after: Sun Xiaoyang

Inventor after: Li Bin

Inventor after: Yan Weidong

Inventor after: Chen Si

Inventor before: Sun Xiaoyang

Inventor before: Yan Weidong

Inventor before: Chen Si

C53 Correction of patent for invention or patent application
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Free format text: CORRECT: INVENTOR; FROM: SUN XIAOYANG YAN WEIDONG CHEN SI TO: SUN XIAOYANG LI YUN YAN WEIDONG CHEN SI

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