CN102720358A - Forming method of upward pull type overhanging joist steel moudle frame stressing platform - Google Patents
Forming method of upward pull type overhanging joist steel moudle frame stressing platform Download PDFInfo
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- CN102720358A CN102720358A CN2012101981123A CN201210198112A CN102720358A CN 102720358 A CN102720358 A CN 102720358A CN 2012101981123 A CN2012101981123 A CN 2012101981123A CN 201210198112 A CN201210198112 A CN 201210198112A CN 102720358 A CN102720358 A CN 102720358A
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Abstract
The invention relates to a forming method of an upward pull type overhanging joist steel moudle frame stressing platform. The forming method comprises the following steps: enabling an overhanging joist steel to weld a connecting plate pull knot on a pre-burying otic placode of a floor structure through an inclined pull round steel, and realizing a pull connection main stress; adopting two bolted connections on a joist steel direction which is perpendicular to the upper surface of the middle of the overhanging joist steel, enabling a channel steel to be as a pull knot rod piece, adopting one bolted connection on the joist steel direction which is perpendicular to the upper surface of the end part of the overhanging joist steel, utilizing the channel steel to strengthen the end part of the overhanging joist steel, and connecting each overhanging joist steel and the channel steel so as to form a whole well-shaped combination stress platform; and welding a vertical rod bearing insertion steel bar head on the overhanging joist steel based on the vertical rod position supported by a moudle frame, welding a steel baffle plate on the edge beam position of the overhanging joist steel and the floor structure, wherein the steel baffle plate is used for generating horizontal thrust after balanced construction stress. The forming method provided by the invention simplifies the construction procedures, reduces construction difficulty, and simultaneously ensures construction safety; and the stress of the stress platform overall structure is reasonable, and the stress platform overall structure is safe and reliable.
Description
Technical field
The present invention relates to technical field of building construction, be specifically related to the encorbelment forming method of the stressed platform of i iron mould bases of a kind of pull-up for building.
Background technology
Along with China's development of economic construction, city middle-high building more and more.Modern high-rise building often adopts the concrete roof to cornice in design; The horizontal range of choosing the outer facade of highrise building of cornicing generally can reach 4～6m; Though this design that concrete cornices has reached outward appearance visual effect elegant in appearance, caused bigger constructional difficulties also for the building operations link.Because the position of cornicing on concrete roof is higher, and the part of encorbelmenting of construction can produce bigger working load, in the construction in order to guarantee structural safety and to practice thrift the mould bases expense, the mould bases platform of encorbelmenting that generally adopts i iron to make.It is all reasonable inadequately that traditional mould bases platform of encorbelmenting is provided with at the connected node place of the connected node of i iron and round steel and round steel and built-in fitting; Welding is generally all adopted in connection between the member; Encorbelment the mould bases platform when stressed at i iron, and the stressed platform that welding forms is prone to deform, and weld seam has the possibility of tearing; Whole mechanics stress is prone to change, thereby is threatening the safety of building operations to carry out greatly.
At present, country does not formulate corresponding standard to the stressed platform of the mould bases of encorbelmenting that bears concrete structure loads such as cornicing, and the i iron stressed platform of mould bases of encorbelmenting does not have the forming method of standard yet.
Summary of the invention
The technical problem that the present invention will solve provides a kind of overall structure reasonable stress, safe and reliable, forming method that pull-up i iron easy construction is encorbelmented the stressed platform of mould bases.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
The encorbelment forming method of the stressed platform of i iron mould bases of a kind of pull-up may further comprise the steps:
(1) i iron of encorbelmenting is realized socketing stressed on the pre-buried otic placode of floor structure through tiltedly drawing on the round steel welding upper junction plate drawknot;
(2) the said i iron of encorbelmenting is connected through the lower ear plate crab-bolt with tiltedly drawing between the round steel, tiltedly draws round steel to be connected through bolt with upper junction plate and regulates tiltedly elongation degree, and upper junction plate is connected through crab-bolt with the pre-buried otic placode of floor structure;
(3) upper surface adopts bolt to connect the twice channel-section steel perpendicular to the i iron direction and makes its drawknot rod member in the middle of the said i iron of encorbelmenting; The vertical i iron direction employing of the said i iron end upper surface of encorbelmenting bolt connects one channel-section steel and strengthens encorbelmenting the i iron end, and the i iron of respectively encorbelmenting is connected the back and forms the combination stressed platform of whole groined type with channel-section steel;
(4) after said stressed platform installs; On the said i iron of encorbelmenting, press mould bases and support used vertical rod position welding vertical rod socket joint steel bar end; Said i iron and the floor structure side bar position weldable steel baffle plate of encorbelmenting is used for the horizontal thrust that the stressed back of balanced structure produces.
The said i iron of encorbelmenting adopts 18# or 20# i iron, and its length is 9m, and the length of wherein encorbelmenting is 6m, on this encorbelments i iron, welds lower ear plate apart from 1m place, its end, and this lower ear plate adopts steel plate to make, and specification is 200 * 300 * 20mm, and fusion length is 200mm; Said lower ear plate centre bit is equipped with diameter 30mm circular hole, is used for realization and tiltedly draws crab-bolt connection between the round steel lower connecting plate.
Said i iron and structure flooring side bar junction welding 50 * 100 * 10mm steel plate of encorbelmenting, fusion length is 100mm; The every center at upper surface at a distance from 900mm welded φ 25 steel bar ends from the i iron end, and steel bar end length is 200mm, as the socket joint head of the used steel pipe of mould bases support system.
The said round steel that tiltedly draws adopts φ 20 reinforcement fabrications, and length adapts with encorbelment length and story height; The said round steel lower end welding lower connecting plate that tiltedly draws, the double welding fusion length is not less than 150mm; Said lower connecting plate adopts steel plate to make, and specification is 300 * 150 * 20mm, and non-welding ends is made the semicircle of diameter 150mm and reserved diameter 30mm circular hole at the center, connects said encorbelmenting and adopts the connection of M25 crab-bolt during i iron; The said round steel upper end mantle fiber length of tiltedly drawing is not less than 500mm.
Said upper junction plate is welded by steel plate A, the steel plate B that specification is followed successively by 300 * 100 * 20mm, 100 * 100 * 20mm, and weld size is double welding 100mm; Said steel plate A stays at the top and establishes diameter 30mm circular hole, adopts length to connect for the M25 crab-bolt of 200mm when being connected with pre-buried otic placode; Steel plate B stays the center and establishes diameter 25mm circular hole, adopts the M20 plain bolt to be connected with the said mantle fiber end of round steel that tiltedly draws, and tiltedly draws the length behind the round steel drawknot through bolt adjustment.
It is that the steel plate of 150 * 200 * 20mm is made that said pre-buried otic placode adopts specification, is welded to connect in the agent structure side bar on the built-in fitting, and fusion length is 200mm.
The present invention has actively useful effect:
1. install to realize fixing to the stressed platform of i iron mould bases of encorbelmenting through sequencing, simplified the operational sequence of construction, reduced difficulty of construction, guaranteed construction safety simultaneously.
2. the present invention adopts plain bolt at the oblique degree of elongation of junction plate adjusted to tiltedly drawing round steel, has guaranteed tiltedly to draw round steel fastening to i iron, makes structure stress balanced and reasonable more, has accomplished the science and the validity of structure.
3. tiltedly drawing on round steel and the i iron adopts crab-bolt to be connected between the welding otic placode; Tiltedly draw and be connected the same crab-bolt that adopts between round steel bolt junction plate and the pre-buried otic placode and connect; Make connected node form pin joint rather than rigid joint; Effectively avoided the possibility of structure brittle failure, science is reliable more on the structure stress.
4. adopt detachable design, can be after after construction task is accomplished, unclamping fastening bolt and crab-bolt, tiltedly draw the complete undamaged dismounting of round steel with i iron, can be diverted to next engineering week; The structure long service life can reuse, and reduces use cost.
5. be applicable to the setting of various cantilevered structure mould bases platforms, have good society and economic benefit after the popularization.
Description of drawings
Fig. 1 is the pull-up i iron structural representation after the stressed platform moulding of mould bases of encorbelmenting;
Fig. 2 makes shaping schematic view for the i iron of encorbelmenting;
Fig. 3 makes shaping schematic view for tiltedly drawing round steel;
Fig. 4 makes shaping schematic view for upper junction plate;
Fig. 5 is that pre-buried otic placode is made shaping schematic view;
Fig. 6 is that i iron is connected sketch map with channel-section steel;
Fig. 7 is the combination stressed platform sketch map of groined type.
Among the figure, 1 is the i iron of encorbelmenting, and 2 is channel-section steel, and 3 is the socket joint steel bar end, and 4 is lower ear plate, and 5 is lower connecting plate; 6 for tiltedly drawing round steel, and 7 cornice for agent structure, and 8 is upper junction plate, and 9 is upper ear plate, and 10 insert steel pipe during for construction, and 11 is pre-embedded bolt; 12 is steel shoe, and 13 is mantle fiber, and 14 is steel plate A, and 15 is bolt, and 16 is steel plate B; 17 is the round steel wire head, and 18 is circular hole, and 19 is built-in fitting in the agent structure, and 20 is the M12 bolt, and 21 is channel-section steel.
The specific embodiment
Further set forth the present invention below in conjunction with specific embodiment.
The encorbelment forming method of the stressed platform of i iron mould bases of 1 one kinds of pull-ups of embodiment may further comprise the steps:
(1) i iron of encorbelmenting is made moulding (referring to Fig. 2): the i iron of encorbelmenting adopts 18# or 20# i iron, and i iron length is 9m, and the length of wherein encorbelmenting is 6m.The welding lower ear plate 4 apart from 1m place, i iron end, lower ear plate 4 adopts steel plate to make, and specification is 200 * 300 * 20mm, and fusion length is 200mm.Lower ear plate 4 centre bits are equipped with diameter 30mm circular hole, are used to realize lower ear plate 4 and tiltedly draw crab-bolt connection between round steel 6 lower connecting plates 5.I iron and structure flooring side bar junction welding 50 * 100 * 10mm steel plate, fusion length is 100mm.Every at a distance from the surperficial above that center welding of 900mm φ 25 socket joint steel bar ends 3 from i iron 1 end of encorbelmenting, steel bar end length is 200mm, as the socket joint head of the used steel pipe of mould bases support system.
(2) tiltedly draw round steel to make moulding (referring to Fig. 3): tiltedly draw round steel 6 to adopt φ 20 reinforcement fabrications, its length is 8m (general relevant with encorbelment length and story height).Tiltedly draw round steel 6 lower ends welding lower connecting plate 5, double welding fusion length 150mm.Junction plate adopts steel plate to make, and specification is 300 * 150 * 20mm, and non-welding ends is made the semicircle of diameter 150mm and reserved diameter 30mm circular hole at the center, connects and adopts the M25 crab-bolt to connect when encorbelmenting i iron.Round steel upper end mantle fiber length is 500mm.
(3) upper junction plate is made moulding (referring to Fig. 4): upper junction plate 8 adopts steel plate to make, and steel plate A specification is 300 * 100 * 20mm, and steel plate B specification is 100 * 100 * 20mm.Steel plate A and steel plate B adopt and are welded to connect, and weld size is double welding 100mm.Steel plate A stays at the top and establishes diameter 30mm circular hole, adopts length to connect for the M25 crab-bolt of 200mm when being connected with pre-buried upper ear plate 9.Steel plate B stays the center and establishes diameter 25mm circular hole, adopts the M20 plain bolt to be connected with tiltedly drawing round steel mantle fiber end, tiltedly draws the length after round steel sockets through the bolt adjustment.
(4) upper ear plate (pre-buried) is made moulding (referring to Fig. 5): pre-buried lower ear plate 4 adopts steel plates to make, and specification is 150 * 200 * 20mm, is welded to connect in the agent structure side bar on the built-in fitting, and fusion length is 200mm.Pre-buried lower ear plate 4 centers are stayed and are established diameter 30mm circular hole.
(5) i iron 1 of encorbelmenting is mainly stressed through tiltedly drawing on the round steel 6 welding upper junction plate 8 to socket on the pre-buried upper ear plate 9 of floor structure, to realize socketing; The i iron 1 of encorbelmenting is connected through lower ear plate 4 crab-bolts with tiltedly drawing between the round steel 6, tiltedly draws round steel 6 to be connected through bolt with upper junction plate 8 and regulates tiltedly elongation degree, and the pre-buried upper ear plate of upper junction plate 8 and floor structure 9 is connected through crab-bolt;
(6) the combination stressed platform of groined type is made moulding: the i iron of respectively the encorbelmenting protruded length of encorbelmenting is 6m, and respectively encorbelmenting, spacing is 1m between the i iron.Adopt the M12 plain bolt to connect 1 road channel-section steel in the vertical i iron direction of the i iron end upper surface of respectively encorbelmenting and strengthen as the end, its length is 6m.Adopt M12 plain bolt to be connected twice channel-section steel apart from end 2m with the vertical i iron direction of 4m position upper surface at the i iron of encorbelmenting and socket rod member, its length is 6m; The i iron of respectively encorbelmenting is connected the common combination stressed platform of whole groined type that forms in back with each channel-section steel.The i iron of encorbelmenting is connected sketch map and sees shown in Figure 6ly with channel-section steel, the combination stressed platform sketch map of groined type is seen shown in Figure 7.
(7) after said stressed platform installs; On the said i iron of encorbelmenting, press mould bases and support used vertical rod position welding vertical rod socket joint steel bar end 3; Said i iron and the floor structure side bar position weldable steel baffle plate 12 of encorbelmenting; Be used for the horizontal thrust that the stressed back of balanced structure produces, the stressed platform structure after the moulding is as shown in Figure 1.
Change each the concrete parameter in the foregoing description, can form a plurality of concrete embodiment, be common excursion of the present invention, detail no longer one by one at this.
Claims (6)
1. the pull-up forming method of the stressed platform of i iron mould bases of encorbelmenting may further comprise the steps:
(1) i iron of will encorbelmenting is stressed through tiltedly drawing the upper junction plate that welds on the round steel to socket on the pre-buried otic placode of floor structure to realize socketing;
(2) the said i iron of encorbelmenting is connected through the lower ear plate crab-bolt with tiltedly drawing between the round steel, tiltedly draws round steel to be connected through bolt with upper junction plate and regulates tiltedly elongation degree, and upper junction plate is connected through crab-bolt with the pre-buried otic placode of floor structure;
(3) it sockets rod member to adopt bolt to connect twice channel-section steel work at the said i iron middle part upper surface of respectively encorbelmenting perpendicular to the i iron direction; Adopt bolt to connect one channel-section steel in the vertical i iron direction of the said i iron outer end upper surface of encorbelmenting and strengthen encorbelmenting the i iron outer end, the i iron of respectively encorbelmenting is connected the back and forms the combination stressed platform of groined type with channel-section steel;
(4) after the combination stressed platform of said groined type installs; On the said i iron of encorbelmenting, support used vertical rod position welding vertical rod socket joint steel bar end according to mould bases; At the said i iron of the encorbelmenting position weldable steel baffle plate that is connected with the floor structure side bar, be used for the horizontal thrust that the stressed back of balanced structure produces.
2. the encorbelment forming method of the stressed platform of i iron mould bases of pull-up according to claim 1 is characterized in that the said i iron of encorbelmenting adopts 18# or 20# i iron; Its length is 9m; The length of wherein encorbelmenting is 6m, on this encorbelments i iron, welds lower ear plate apart from 1m place, its end, and this lower ear plate adopts steel plate to make; Specification is 200 * 300 * 20mm, and fusion length is 200mm; Said lower ear plate center is provided with diameter 30mm circular hole, is used to realize that this lower ear plate is connected with tiltedly drawing the crab-bolt between the round steel lower connecting plate.
3. the encorbelment forming method of the stressed platform of i iron mould bases of pull-up according to claim 1 is characterized in that at said i iron and structure flooring side bar junction welding 50 * 100 * 10mm steel plate of respectively encorbelmenting, fusion length is 100mm; Every at a distance from 900mm midway welding φ 25 steel bar ends above that from said i iron end, steel bar end length is 200mm, as the socket joint head of the used steel pipe of mould bases support system.
4. the encorbelment forming method of the stressed platform of i iron mould bases of pull-up according to claim 1 is characterized in that the said round steel that tiltedly draws adopts φ 20 reinforcement fabrications, and its length adapts with encorbelment length and story height; The lower end that round steel is tiltedly drawn in said lower connecting plate welding; Said lower connecting plate adopts steel plate to make, and specification is 300 * 150 * 20mm, and non-welding ends is made the semicircle of diameter 150mm and offered diameter 30mm circular hole at the semicircle center position, is connected with the said i iron of encorbelmenting via this circular hole with crab-bolt; The said round steel upper end of tiltedly drawing is provided with the mantle fiber that length is not less than 500mm.
5. the encorbelment forming method of the stressed platform of i iron mould bases of pull-up according to claim 1; It is characterized in that; Said upper junction plate is welded by steel plate A, the steel plate B that two kinds of specifications are followed successively by 300 * 100 * 20mm, 100 * 100 * 20mm, and weld size is 100mm; Said steel plate A stays at the top and establishes diameter 30mm circular hole, adopts length to connect for the M25 crab-bolt of 200mm when being connected with pre-buried otic placode; Steel plate B stays the center and establishes diameter 25mm circular hole, adopts the M20 bolt to be connected with the said mantle fiber end of round steel that tiltedly draws, and tiltedly draws the length behind the round steel drawknot through bolt adjustment.
6. the encorbelment forming method of the stressed platform of i iron mould bases of pull-up according to claim 1; It is characterized in that; It is that the steel plate of 150 * 200 * 20mm is made that said pre-buried otic placode adopts specification, is welded to connect in the agent structure side bar on the built-in fitting, and fusion length is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101981123A CN102720358A (en) | 2012-06-15 | 2012-06-15 | Forming method of upward pull type overhanging joist steel moudle frame stressing platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101981123A CN102720358A (en) | 2012-06-15 | 2012-06-15 | Forming method of upward pull type overhanging joist steel moudle frame stressing platform |
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| CN2012101981123A Pending CN102720358A (en) | 2012-06-15 | 2012-06-15 | Forming method of upward pull type overhanging joist steel moudle frame stressing platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321410A (en) * | 2013-06-26 | 2013-09-25 | 青岛建安建设集团有限公司 | Overhang diagonal form at exposed corner and method for erecting form |
| CN103615123A (en) * | 2013-12-19 | 2014-03-05 | 中建八局第四建设有限公司 | Reinforcing tool and reinforcing method for steel columns of insulated column |
| CN104088452A (en) * | 2014-07-02 | 2014-10-08 | 浙江万华建设有限公司 | Connecting piece for cantilever beam scaffold |
| CN105735641A (en) * | 2016-03-08 | 2016-07-06 | 黄石市砼锚五金机电设备有限公司 | Scaffold cantilever material platform with sheave tensioning adjustment devices |
| CN106703407A (en) * | 2017-02-17 | 2017-05-24 | 四川省第六建筑有限公司 | Construction method of double-layered shape steel supporting rack of cantilever beam plate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321410A (en) * | 2013-06-26 | 2013-09-25 | 青岛建安建设集团有限公司 | Overhang diagonal form at exposed corner and method for erecting form |
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| CN103615123A (en) * | 2013-12-19 | 2014-03-05 | 中建八局第四建设有限公司 | Reinforcing tool and reinforcing method for steel columns of insulated column |
| CN103615123B (en) * | 2013-12-19 | 2016-01-27 | 中建八局第四建设有限公司 | The steel column reinforcement means of insulated column |
| CN104088452A (en) * | 2014-07-02 | 2014-10-08 | 浙江万华建设有限公司 | Connecting piece for cantilever beam scaffold |
| CN105735641A (en) * | 2016-03-08 | 2016-07-06 | 黄石市砼锚五金机电设备有限公司 | Scaffold cantilever material platform with sheave tensioning adjustment devices |
| CN106703407A (en) * | 2017-02-17 | 2017-05-24 | 四川省第六建筑有限公司 | Construction method of double-layered shape steel supporting rack of cantilever beam plate |
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Application publication date: 20121010 |