CN207633734U - A kind of high-altitude overhanging main truss posture steel mould base operation platform - Google Patents

A kind of high-altitude overhanging main truss posture steel mould base operation platform Download PDF

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Publication number
CN207633734U
CN207633734U CN201721751810.6U CN201721751810U CN207633734U CN 207633734 U CN207633734 U CN 207633734U CN 201721751810 U CN201721751810 U CN 201721751810U CN 207633734 U CN207633734 U CN 207633734U
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truss
operation platform
main couple
steel
main
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曹万林
张元�
边瑾靓
刘苹
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Beijing University of Technology
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Beijing University of Technology
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Abstract

A kind of high-altitude overhanging main truss posture steel mould base operation platform, belongs to construction engineering technical field, which includes main couple, and jack truss, rod piece, splice plate and high-strength bolt are safeguarded in edge.Compared with prior art, this stage+module mode is simple, applied widely, and safety stock is high, and deflection is small, and steel using amount is few, and overall cost is relatively low.In the construction process, most loads on platform are passed to concrete column by main couple by respective nodes construction measure, and small part load is passed to beams of concrete by jack truss by respective nodes construction measure.This platform relies on lower two layers of concrete structure to support, and undertakes the various loads that operation platform is transmitted to, keeps support construction more secured, deflection smaller.Suitable for building for high-altitude overhanging operation platform.

Description

A kind of high-altitude overhanging main truss posture steel mould base operation platform
Technical field
The invention belongs to construction engineering technical fields, are related to a kind of high-altitude overhanging main truss posture steel mould base operation platform.
Background technology
Recently as China's expanding economy, high level, high-rise building are more and more, and architectural image also makes rapid progress. Many high-rise, high-rise buildings protrude elevation of building moulding in design and expand top use space, occur being permitted More high-altitude overhanging cast-in-place concrete structures, wherein being no lack of, there are some to overhang the prodigious structure of span, this is to natively comparing danger More stringent requirements are proposed for the work progress of danger.
Suspended structure at high altitude load is larger, bearing capacity, rigidity and the stability of mould bases support platform when to construction It is required that very high.In addition it is again working at height, this requires in the construction process, entire mould bases support platform has absolute safety Reliability.The traditional construction method of such engineering is roughly divided into following two:(1) landing high-altitude full framing is set up, i.e., by ground After the roof reinforcement of lower room, full hall fastener type steel pipe formwork-support is set up to desired height of constructing.For high where cantilevered structure It spends for higher engineering, such method material requested dosage is very big, and construction dismounting is complicated, and stability is difficult to ensure, because This is not suitable for suspended structure at high altitude.(2) the overhanging support system being made of overhanging type steel beam and diagonal brace.Although the method relatively on A kind of method is improved, but is only suitable for the smaller structure of cantilever span, and longer for overhanging, larger structure of conducting oneself with dignity is same It is not applicable.
Based on this, the present invention proposes a kind of high-altitude overhanging main truss posture steel mould base operation platform, has high capacity, just Degree is big, easy for assemble or unload, applied widely, and safety stock is high, and steel using amount is few, the relatively low advantage of overall cost, particularly suitable In corner, there are the skyscrapers of suspended structure at high altitude.
Invention content
The present invention provides a kind of high-altitude overhanging main truss posture steel mould base operation platform, to solve in high-rise, high-rise building In, set up long the problem of overhanging cast-in-place concrete structure operation platform.
To achieve the above object, the present invention adopts the following technical scheme that:A kind of high-altitude overhanging main truss posture steel mould base construction Platform, the platform include:Rod piece (3), splice plate (4) and high-strength bolt (5) are safeguarded in main couple (1), jack truss (2), edge.
The main couple be two Pin intersect main couple, material selection intensity be Q345 H profile steel, welding or rolling and At sectional dimension should calculate determination as needed by technical staff.Each truss structure include top boom, lower boom, perpendicular web member and Diagonal web member, truss depth are the floor height of concrete structure on the middle and senior level of constructing, and angle is kept between chord member and diagonal web member, adjacent web members At about 45 degree, keep truss stress more reasonable.Simultaneously main couple web member design in, should make as possible more web member be in by Tension state avoids the stable problem for generating steel construction.
The main couple is the main bearing member of entire formwork system, not only undertakes itself and the lotus from body It carries, while undertaking the load that jack truss around is transmitted to, and deliver load to concrete structure.
The jack truss material selection intensity is the H profile steel of Q345, welds or rolls, sectional dimension should be by technology Personnel calculate determination as needed.Jack truss equally includes top boom, lower boom, perpendicular web member and diagonal brace.Intersecting in main couple The jack truss in portion is known as cross beam truss, and chord member one end is connected with main couple, the other end by respective nodes construction measure with Concrete structured beam is connected.A cross beam truss load part passes to concrete structured beam, and another part passes to master Truss.Intersecting the jack truss outside main couple, one end is connected with main couple, and the other end, will load thereon similar to pure overhanging Pass to main couple.
The edge safeguards that rod piece is H profile steel, welds or rolls, sectional dimension should be as needed by technical staff It is determined with detailing requiments.Edge safeguards that the outermost edge in entire truss is arranged in rod piece, main to play contact and maintenance, usually Stress is smaller, and in order to mitigate dead weight and saving steel, section is usually less than the rod piece of main couple and jack truss.
The splice plate and high-strength bolt is the connecting elements of entire truss, and splice plate is rectangular steel plates, including upper and lower The splice plate and web splice plate on the edge of a wing;High-strength bolt material should be 45# steel or steel alloy, and intensity rank should be 10.9 grades or more Height, quantity, position, diameter and length should be determined by calculating and detailing requiments.
When two crossing rod piece connections, typically main stressed member is continuous, and opposite secondary member disconnects.Secondary member It is welded with main rod piece when one small part is prefabricated in the factory, remaining part passes through splice plate and high-strength bolt and weldering in lifting Socket part point connection.
Compared with prior art, a kind of high-altitude overhanging main truss posture steel mould base operation platform of the present invention is suitable for being high-altitude There is the cast-in-place concrete structure erection construction platform of overhanging in corner, have the advantage that:
(1) bearing capacity is big, and safety stock is high.By the space steel mould base that height is floor height, entire mould bases is made to become one Space-load system rather than single rod piece stress, substantially increase the bearing capacity of construction supporting platform.
(2) rigidity is big, and deflection is small.Entire formwork system each rod piece in loading process connects each other, and compatible deformation adds Again there are many space erect web member and diagonal web member presence substantially increase entire Construction Support for independent rod piece The rigidity of platform, to which its deflection is reduced to minimum, to ensure that the required precision of construction to greatest extent.
(3) easy for assemble or unload.Entire truss is used by the way of prefabrication, on-site consolidation between each truss rod The connection type of high-strength bolt, avoids high-altitude wet work, it is ensured that quality of connection.
Description of the drawings
Fig. 1 is a kind of three-dimensional effect diagram of high-altitude overhanging main truss posture steel mould base operation platform.
Fig. 2 is main couple elevation in a kind of high-altitude overhanging main truss posture steel mould base operation platform.
Fig. 3 is two rod piece assembly node stereogram of truss in a kind of high-altitude overhanging main truss posture steel mould base operation platform.
Specific implementation mode
Below in conjunction with the accompanying drawings and example, the specific implementation mode of the present invention is described in further detail.Following instance is used In illustrating the present invention, but it is not limited to the scope of the present invention.
In this example, the sectional dimensions of all rod pieces, splicing board size, high-strength bolt model need technical staff according to Practical Project is determined by calculating with detailing requiments.In addition it is designing with installation process, is ensureing platform pricncipal rafter upper table Face is conducive to the progress of construction in later period in identical height level.
As shown in Figs. 1-3, a kind of high-altitude overhanging main truss posture steel mould base operation platform, construction method are as follows:
The first step wherein will be hung to desired height by a Pin main couples, pass through when concrete structure construction is to respective storey Corresponding node connection measure is connected with concrete column.For example, it is desired to which the High Large Cantilever concrete structure poured is in n-th layer building Height where plate, then, entire operation platform needs are built in (n-1)th layer of entire space.That is space steel mould base winds up Bar and the concrete column phase anchor connection at (n-1)th layer of floor height, the concrete column at lower boom and the n-th -2 layers floor height Phase anchor connection, entire mould bases height are floor height.
The segmentation of another Pin main couples is hung at desired height, passes through splice plate, high-strength bolt and reserved by second step Two Pin main couples are bolted by hole, and guarantee has enough bonding strengths.
Third walks, and after two Pin main couple rigging outs, re-segmenting lifts jack truss.Jack truss and main couple, jack truss It is equally connect with high-strength bolt between jack truss, and ensures bonding strength.Part jack truss is needed through corresponding node structure Make measure and beams of concrete anchor connection.
Edge after primary and secondary truss rigging out, is safeguarded that rod piece is hung to desired height, with main couple or secondary purlin by the 4th step Spliced by high-strength bolt between frame.
Whether the 5th step after entire space steel mould base rigging out, reaches requirement with instrument detection installation accuracy, then exists I-steel or steel plate etc. are completely spread on pricncipal rafter, find out a complete plane, the bottom surface as entire operation platform.

Claims (6)

1. a kind of high-altitude overhanging main truss posture steel mould base operation platform, it is characterised in that:The platform includes main couple (1), secondary purlin Rod piece (3), splice plate (4) and high-strength bolt (5) are safeguarded in frame (2), edge;Main couple (1) by being connected with concrete structure column, Jack truss (2) is connected by joint structure measure with concrete structured beam;Bar is safeguarded at main couple (1), jack truss (2) and edge It is connected by splice plate (4) and high-strength bolt (5) between each rod piece in part (3), to which each section is spliced into an entirety Space steel mould base forms space-load system;The overhanging direction of main couple (1) should respectively with the concrete knot of its anchor connection The length direction of the structure column back rest is consistent.
2. a kind of high-altitude overhanging main truss posture steel mould base operation platform according to claim 1, it is characterised in that:Described Main couple (1) is the main couple that two Pin intersect, and material selection intensity is the H profile steel of Q345, welds or rolls;The purlins every Pin Frame includes top boom, lower boom, perpendicular web member and diagonal web member, and truss depth is the floor height of concrete structure on the middle and senior level of constructing, chord member Angle is maintained at 45 degree between diagonal web member and adjacent web members;The main couple that two Pin intersect passes through splice plate (4) and high-strength spiral shell Bolt (5) connects.
3. a kind of high-altitude overhanging main truss posture steel mould base operation platform according to claim 1, it is characterised in that:Described The material selection intensity of jack truss (2) is the H profile steel of Q345, welds or rolls;Jack truss (2) includes top boom, lower edge Bar, perpendicular web member and diagonal brace;Be known as cross beam truss in the jack truss intersected inside main couple, chord member one end by splice plate with And high-strength bolt is connected with main couple, the other end is connected with concrete structured beam;Intersecting the jack truss outside main couple, one end It is connected with main couple, the other end is pure overhanging, will pass to main couple by load thereon.
4. a kind of high-altitude overhanging main truss posture steel mould base operation platform according to claim 1, it is characterised in that:Described Edge safeguards that rod piece (3) is H profile steel, welds or rolls;Safeguard that the ragged edge in entire truss is arranged in rod piece (3) in edge Edge is connect with main couple (1) and jack truss (2) by splice plate (4) and high-strength bolt (5).
5. a kind of high-altitude overhanging main truss posture steel mould base operation platform according to claim 1, it is characterised in that:Described Splice plate (4) and high-strength bolt (5) are the connecting elements of entire truss, and splice plate is rectangular steel plates, includes the spelling of upper lower flange Fishplate bar and web splice plate, thickness are no less than the thickness of institute's connecting plate part;High-strength bolt material should be 45# steel or steel alloy, by force Degree rank should be 10.9 grades or higher.
6. a kind of high-altitude overhanging main truss posture steel mould base operation platform according to claim 1, it is characterised in that:It is constructing In after all member erections, the upper surface of top boom should be at same level height;And above completely spread I-steel or Steel plate finds out a complete plane, the bottom surface as entire operation platform.
CN201721751810.6U 2017-12-15 2017-12-15 A kind of high-altitude overhanging main truss posture steel mould base operation platform Active CN207633734U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677259A (en) * 2020-06-11 2020-09-18 北京城建十六建筑工程有限责任公司 High-rise Bailey truss cantilever construction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677259A (en) * 2020-06-11 2020-09-18 北京城建十六建筑工程有限责任公司 High-rise Bailey truss cantilever construction method
CN111677259B (en) * 2020-06-11 2021-09-28 北京城建十六建筑工程有限责任公司 High-rise Bailey truss cantilever construction method

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