CN104453197B - High Large Cantilever concrete structural steel shape supports platform - Google Patents

High Large Cantilever concrete structural steel shape supports platform Download PDF

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Publication number
CN104453197B
CN104453197B CN201410538012.XA CN201410538012A CN104453197B CN 104453197 B CN104453197 B CN 104453197B CN 201410538012 A CN201410538012 A CN 201410538012A CN 104453197 B CN104453197 B CN 104453197B
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steel
hound
bar
girder
channel
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CN104453197A (en
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冯永刚
杨丽娟
秦浩
徐建军
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SHANGHAI ZHONGJIN CONSTRUCTION GROUP CO Ltd
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SHANGHAI ZHONGJIN CONSTRUCTION GROUP CO Ltd
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Abstract

The present invention relates to a kind of High Large Cantilever concrete structural steel shape and support platform, including many Pin shaped steel triangular support bracket, the horizontal coupling beam of channel-section steel and the horizontal purlin of channel-section steel, many Pin shaped steel triangular support bracket includes girder, horizon bar, vertical bar, the first hound and the second hound;Erection of main beam is on the side bar of next story frame structure of the cantilevered structure needing construction;First hound and the second hound are separately mounted to need on lower two story frame structures of cantilevered structure and the side bar of lower three story frame structures of construction;Horizon bar connects the first hound and the second hound;Second hound is also connected with one end of vertical bar with the node place of horizon bar, and the other end of vertical bar is connected with girder;The welding of girder upper surface is equipped with the horizontal purlin of a plurality of channel-section steel for setting up support for shuttering and external scaffolding;It is welded to connect by the horizontal coupling beam of channel-section steel between many Pin shaped steel triangular support bracket.The problem that the invention solves the difficulty of construction of superelevation, large cantilever, component load larger structure.

Description

High Large Cantilever concrete structural steel shape supports platform
Technical field
The present invention relates to technical field of buildings, particularly relate to a kind of High Large Cantilever concrete structural steel shape and support platform.
Background technology
The needs of effect needs of prominent elevation of building moulding and high-rise upper space extension during in order to meet architectural design, in recent years high-rise xoncrete structure of encorbelmenting, component building more and more.The deadweight of suspended structure at high altitude, wind load are all bigger, during construction, the stability of formwork bracing system and rigidity requirement are high, and work high above the ground, it is desirable to the work progress of whole support system possesses cocksure safety, therefore that the supporting form of whole support system and the selection of material is most important.Such as Shanghai general headquarters of flexible express delivery company limited, its base is positioned to the west of the Hua Xu highway of Shanghai City, to the north of Min Xing main road, warehousing management room engineering devises a circular hall ten layers of the south, there is the decoration shape half arc platform choosing 6m outside a wide 18.60m this circular hall at ten Rotating fields the south places, and absolute altitude is 40.45m.Cantilever Beams has 400 × 700mm and 700 × 800mm two kinds, and ring beam is 400 × 700mm, thickness of slab 120mm.This cantilevered structure construction height is high, span of encorbelmenting is big and this cantilever part decoration is plug-in stone material, therefore must take into account decoration external scaffolding when considering support system.
Traditional construction method has two big classes: regulation in regulation " full hall bracing frame scaffolding height is no more than 30m " and Shanghai City local regulation DG/T08-16-2011 " steel tube fastener formula template vertical support system security technology code " in (1) full hall console model steel pipe supporting system: existing national regulation JGJ130-2011 " construction fastener type steel pipe scaffold act of technique for security " " carrying is propped up the plane of support system and builds maximum support height between plane institution movement and not should be greater than 30m ".If setting up the full hall bracing frame high more than 30m, owing to formwork height is high, for ensureing stability and the rigidity of entirety, it is necessary to encryption transverse bar member drawknot and vertical supporting spacing, so that put into substantial amounts of tube material, not only dangerous but also uneconomical obviously.(2) steel main beam is encorbelmented, diagonal brace rod member unloads support system: this support system is that steel main beam is encorbelmented due to main bearing member, suitable in the external scaffolding at balcony slab position or the bracing frame of cantilever span about 2m, the cantilever span of overhanging type steel is typically in about 3.5m.If for the cantilevered structure more than 2m, owing to structural load is relatively big, required overhanging type steel cross section is also relatively big, causes deadweight bigger, it is necessary to be designed checking to overhang layer structure, and need to do and significantly design adjustment, and beam cross-section change influences whether to use function.
Summary of the invention
The present invention provides a kind of High Large Cantilever concrete structural steel shape to support platform, solves the difficulty of construction of superelevation, large cantilever, component load larger structure, has the many advantages such as easy to operate, reasonable stress, bearing capacity strong, good stability, safety economy.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of High Large Cantilever concrete structural steel shape to support platform, including multiple many Pin shaped steel triangular support brackets, the horizontal coupling beam of channel-section steel and the horizontal purlin of channel-section steel, described many Pin shaped steel triangular support bracket includes girder, horizon bar, vertical bar, the first hound and the second hound;Described erection of main beam is on the side bar of next story frame structure of the cantilevered structure needing construction;Described first hound and the second hound are separately mounted to need on the side bar of upper and lower three story frame structures of side bar of lower two story frame structures of the cantilevered structure of construction;Described horizon bar connects the first hound and the second hound;Described second hound is also connected with one end of vertical bar with the node place of horizon bar, and the other end of vertical bar is connected with girder;The welding of described girder upper surface is equipped with a plurality of described horizontal purlin of channel-section steel for setting up support for shuttering and external scaffolding;It is welded to connect by the horizontal coupling beam of described channel-section steel between the plurality of many Pin shaped steel triangular support bracket.
Described many Pin shaped steel triangular support bracket is welded, and girder adopts 20a I-steel, the first hound, the second hound, horizon bar and vertical bar all to adopt No. 16 I-steel.
Being equipped with built-in fitting on the side bar of next story frame structure of the described cantilevered structure needing construction, lower two story frame structures and lower three story frame structures, described built-in fitting is respectively used to welding girder, the first hound and the second hound.
Described many Pin shaped steel triangular support bracket is at least four, and level interval between any two is 1-1.3m.
Spacing between the horizontal purlin of described channel-section steel is 400mm, and is paved with 50mm thickness wood scaffold board.
Described erection of main beam flooring has on the end bay floor of cantilever part to be embedded with twice M20U type bolt.
Described support platform is applicable to the clean cantilever span of horizontal gird less than 8m, and the height of floor is less than the construction of the cantilevered structure on the concrete frame structure of 4.5m.
Beneficial effect
Owing to have employed above-mentioned technical scheme, the present invention is compared with prior art, have the following advantages that and good effect: the present invention supports platform by many Pin shaped steel triangular support bracket, the horizontal coupling beam of channel-section steel (bar), the horizontal purlin composition High Large Cantilever concrete structural steel shape of channel-section steel, solve the difficulty of construction of superelevation, large cantilever, component load larger structure, there is the many advantages such as easy to operate, reasonable stress, bearing capacity strong, good stability, safety economy.
Accompanying drawing explanation
Fig. 1 is the site plan of the present invention;
Fig. 2 is the elevational schematic view of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiments of the present invention relate to a kind of High Large Cantilever concrete structural steel shape and support platform, as depicted in figs. 1 and 2, including multiple many Pin shaped steel triangular support brackets 1, the horizontal coupling beam of channel-section steel 2 and the horizontal purlin 3 of channel-section steel, described many Pin shaped steel triangular support bracket 1 includes girder 11, horizon bar 12, vertical bar the 13, first hound 14 and the second hound 15;Described girder 11 is arranged on the side bar of next story frame structure of the cantilevered structure needing construction;Described first hound 14 and the second hound 15 are separately mounted to need on the side bar of upper and lower three story frame structures of side bar of lower two story frame structures of the cantilevered structure of construction;Described horizon bar 12 connects the first hound 14 and the second hound 15;Described second hound 15 is also connected with one end of vertical bar 13 with the node place of horizon bar 12, and the other end of vertical bar 13 is connected with girder 11;The welding of described girder 11 upper surface is equipped with a plurality of described horizontal purlin 3 of channel-section steel for setting up support for shuttering and external scaffolding;It is welded to connect by the horizontal coupling beam 2 of described channel-section steel between the plurality of many Pin shaped steel triangular support bracket 1.
Wherein, triangular support bracket 1 is welded by shaped steel, and girder 11 adopts 20a I-steel, and the most strong point section of encorbelmenting 7.6m, first hound the 14, second hound 15, horizon bar 12 and vertical bar 13 all adopt No. 16 I-steel.
The erection of main beam of many Pin shaped steel triangular support bracket 1 is on next the story frame structure side bar of cantilevered structure needing construction, first I-steel hound 14 is arranged on down on two story frame structure side bars, second I-steel hound 15 is arranged on down on three story frame structure side bars, three nodes weld with the built-in fitting 4 of three layers flooring respectively, weld bead height 6mm.Side bar top built-in fitting 4 can be pre-embedded steel slab, forms with the reinforcement welding of 20mm steel plate and 6 long 400mm of diameter 14mm, is embedded in the top of structure side bar during structure construction.
At girder 11, flooring is installed to have on cantilever part end bay floor to be also embedded with twice M20U type bolt 5, when being used for installing triangular support bracket frame, fixes 20a I-steel girder temporarily, and for safety stock.
Many Pin shaped steel triangular support bracket 1 level interval 1m, maximum less than 1.3m, it is weldingly connected by the horizontal coupling beam 2 of 14a channel-section steel between Support bracket 1.
On the girder 11 of many Pin shaped steel triangular support bracket 1, the welding laying horizontal purlin 3 of 14a channel-section steel is used for setting up support for shuttering and external scaffolding, spacing 400mm between the horizontal purlin 3 of channel-section steel, also completely it is covered with 50mm thickness wood scaffold board between the horizontal purlin 3 of channel-section steel, creates for support for shuttering and set up platform.
It is noted that the lower three layers flooring of the cantilevered structure that this type steel support platform scheme Structure of need designer is to needing construction has cantilever part side bar to carry out structure stress checking computations.Type steel support platform is applicable to the clean cantilever span of horizontal gird less than 8m, the construction of the various forms of cantilevered structures on the height of the floor concrete frame structure less than 4.5m (namely the floor height of every floor is less than or equal to 4.5m).
The installation and removal of the present invention are very convenient, and installation steps and the demounting procedure of the present invention are described separately below.
Installation steps:
(1) type steel support platform is divided into several parts such as the single triangle bracket of Pin, the horizontal coupling beam of channel-section steel (bar), the horizontal purlin of channel-section steel;
(2) batch production is adopted to make on ground the triangle bracket of single Pin, to guarantee fabricating quality;
(3) the triangle bracket derrick crane of single Pin is hung work high above the ground point to carry out installing and fixing.
(4) installation of the horizontal coupling beam of channel-section steel (bar), the horizontal purlin of channel-section steel welded and installed finishing type bracing members platform aloft.
Demounting procedure:
(1) reserved Φ 20mm suspension ring during the construction of overhang layer structure floor;
(2) first with steel wire rope, bracket is suspended on suspension ring when removing;
(3) bracket is cut off fulcrum;
(4) with derrick crane from bracket of slinging outside bracket, the steel wire rope of suspention is progressively loosened;
(5) with derrick crane, bracket dragged away from the bottom of cantilevered plate and hang to ground.
It is seen that, the present invention supports platform by many Pin shaped steel triangular support bracket, the horizontal coupling beam of channel-section steel (bar), the horizontal purlin composition High Large Cantilever concrete structural steel shape of channel-section steel, solve the difficulty of construction of superelevation, large cantilever, component load larger structure, there is the many advantages such as easy to operate, reasonable stress, bearing capacity strong, good stability, safety economy.

Claims (7)

1. a High Large Cantilever concrete structural steel shape supports platform, including multiple many Pin shaped steel triangular support bracket (1), the horizontal coupling beam of channel-section steel (2) and the horizontal purlin of channel-section steel (3), the welding of girder (11) upper surface is equipped with a plurality of described horizontal purlin of channel-section steel (3) and is used for setting up support for shuttering and external scaffolding, it is characterized in that, described many Pin shaped steel triangular support bracket (1) include girder (11), horizon bar (12), vertical bar (13), the first hound (14) and the second hound (15);Described girder (11) is arranged on the side bar of next story frame structure of the cantilevered structure needing construction;Described first hound (14) and the second hound (15) are separately mounted to need on the side bar of upper and lower three story frame structures of side bar of lower two story frame structures of the cantilevered structure of construction;Described horizon bar (12) connects the first hound (14) and the second hound (15);Described second hound (15) is also connected with one end of vertical bar (13) with the node place of horizon bar (12), and the other end of vertical bar (13) is connected with girder (11);It is welded to connect by the horizontal coupling beam of described channel-section steel (2) between the plurality of many Pin shaped steel triangular support bracket (1).
2. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterized in that, described many Pin shaped steel triangular support bracket (1) are welded, and girder (11) adopts 20a I-steel, the first hound (14), the second hound (15), horizon bar (12) and vertical bar (13) all to adopt No. 16 I-steel.
3. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterized in that, being equipped with built-in fitting (4) on the side bar of next story frame structure of the described cantilevered structure needing construction, lower two story frame structures and lower three story frame structures, described built-in fitting (4) is respectively used to welding girder (11), the first hound (14) and the second hound (15).
4. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterised in that described many Pin shaped steel triangular support bracket (1) are at least four, and level interval between any two is 1-1.3m.
5. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterised in that the spacing between the horizontal purlin of described channel-section steel (3) is 400mm, and is paved with 50mm thickness wood scaffold board.
6. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterised in that flooring installed by described girder (11) has on the end bay floor of cantilever part to be embedded with twice M20U type bolt (5).
7. High Large Cantilever concrete structural steel shape according to claim 1 supports platform, it is characterized in that, described support platform is applicable to the clean cantilever span of horizontal gird less than 8m, and the height of floor is less than the construction of the cantilevered structure on the concrete frame structure of 4.5m.
CN201410538012.XA 2014-10-13 2014-10-13 High Large Cantilever concrete structural steel shape supports platform Active CN104453197B (en)

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CN104453197B true CN104453197B (en) 2016-07-13

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CN105003069A (en) * 2015-07-16 2015-10-28 上海建工四建集团有限公司 Large-span cable-stayed locking dewatering operating platform and construction method thereof
CN106436890B (en) * 2016-08-30 2019-01-22 江苏嘉洋华联建筑装饰股份有限公司 A kind of interim conversion layer being arranged on flooring
CN107100364A (en) * 2017-04-27 2017-08-29 中国十七冶集团有限公司 A kind of Long-span Cantilever stay in place form support system and its construction method
CN107119904A (en) * 2017-05-26 2017-09-01 中国十七冶集团有限公司 A kind of cantilevered structure truss combined support system
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
CN107989368A (en) * 2017-12-13 2018-05-04 中国十七冶集团有限公司 A kind of form bracing system of large span suspended structure at high altitude
CN111042508A (en) * 2019-11-29 2020-04-21 中国建筑第四工程局有限公司 High-altitude overlong cantilever support member and construction method thereof
CN111576833A (en) * 2020-06-01 2020-08-25 北京天润建设有限公司 Cantilever structure operation supporting system and construction method thereof
CN111910765A (en) * 2020-08-10 2020-11-10 中交一公局集团有限公司 Construction method of high-altitude steel reinforced concrete pouring support system
CN112095798A (en) * 2020-08-31 2020-12-18 中国建筑第八工程局有限公司 Super high-rise double-layer super large cantilever steel structure

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CN201428239Y (en) * 2009-04-09 2010-03-24 温州建设集团公司 Supporting system for combined channel steel cantilever bracket template
JP5201633B2 (en) * 2009-10-29 2013-06-05 株式会社旭学園グループ Two-stage handrail leading structure in construction scaffolding
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