CN104989092B - A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform - Google Patents

A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform Download PDF

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Publication number
CN104989092B
CN104989092B CN201510282733.3A CN201510282733A CN104989092B CN 104989092 B CN104989092 B CN 104989092B CN 201510282733 A CN201510282733 A CN 201510282733A CN 104989092 B CN104989092 B CN 104989092B
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steel truss
screw rod
jointing plate
removable
construction method
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CN104989092A (en
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王新泉
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Shenzhen Golden Century Engineering Industry Co., Ltd.
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Hangzhou Jiangrun Technology Co Ltd
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Abstract

The invention discloses a kind of construction method of high-altitude overhanging superposed type steel truss bearing platform, mainly inclusion screw rod associated part is pre-buried, and it is in place that steel truss hangs stake, removable jointing plate, additional jointing plate are installed, guide rails assembling, upper steel truss installa-tion, drag-line is installed, the step that scaffold formwork system is set up.The construction bearing platform of encorbelmenting that this bearing system safety coefficient is higher, assembly and disassembly is convenient, makes full use of steel truss and solves the problems, such as that traditional I-steel span of encorbelmenting is not enough, and substantially increases the safety of structure of finishing of constructing.

Description

A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform
Technical field
The present invention relates to a kind of construction method of steel truss bearing platform, particularly a kind of high-altitude overhanging superposed type steel truss The construction method of bearing platform.
Background technology
In order to meet modern people to the various use functions of building and aesthetic, get more and more futuramic items Mesh emerges in multitude, and particularly takes in Gongjian's project in tens meters of building or even the high longspan structure of encorbelmenting in the air of rice up to a hundred The cantilevered structure construction bearing platform being even more universal, traditional all sets up full hall steel pipe scaffold or in lower floor using from ground mostly Pre-embedded steel slab is taken in floor concrete structure(Reinforcing bar), or scene encorbelmented using shaped steel or welds an assembled load-bearing and apply Work platform.Although setting up from ground, full hall steel pipe scaffold operational approach is easy, Force Calculation is directly perceived, needs in practice of construction Spend substantial amounts of circulation material and artificial, and due to such support body apply to scaffolding height higher and bear construction loads and from During all larger situation of body load, the stability in the large of support body is often difficult to ensure that, is susceptible to tall and big formwork support body and collapses matter Amount security incident.Another kind adopts overhanging type steel bearing platform formwork system, and its span of encorbelmenting is only applicable to 2 ~ 3 meters, using model It is with its limitation, and need to expend substantial amounts of various steel, higher to Site Welding workman's technical requirements, as this kind of construction Platform be mostly disposable put into, not reproducible using, consumptive material of taking a lot of work.For the construction of skyscraper cantilevered structure, and examine Consider the weak point of both the above construction method, some units in charge of construction employ steel truss to set up holding of cantilevered structure construction Galassing platform, this construction method makes full use of the frame column of original structure, and on frame column, pre-buried or installation ironware, is connected by ironware Steel truss, arranges bearing platform.New steel truss no doubt has many benefits setting up cantilevered structure operation platform, but steel truss Itself may damage to completing structure.
Content of the invention
It is an object of the invention to provide a kind of economical, convenient, safety, the construction party of the repeatable bearing platform utilizing Method, can be effective for the construction of cantilevered structure.
For achieving the above object, the technical scheme is that:
A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform is it is characterised in that described bearing platform is main By bottom steel truss, top steel truss, scaffold formwork system, pre-buried recoverable screw rod, local recoverable screw rod, lead Rail, removable jointing plate, additional jointing plate, drag-line and structural column composition;Bottom steel truss passes through pre-buried recoverable screw rod, office Portion's recoverable screw rod is fixed on constructs on the structural column completing, is connected with removable fixing jointing plate and attached outside bottom steel truss Plus jointing plate;Top steel truss utilizes bolt weldering combination and guide rail to connect bottom steel truss, in removable jointing plate and top steel truss Frame end is provided with drag-line between portion;Top steel truss stretches out the load-bearing becoming top cantilevered structure scaffold formwork system outside structure Platform;
The construction method of high-altitude overhanging superposed type steel truss bearing platform includes following construction procedure:
Step one, screw rod associated part are pre-buried:Before concrete construction, the PVC sleeve pipe of embedment recoverable screw rod With vertical anchorage screw, screw hole in structural column for the local recoverable screw rod;
Step 2, steel truss lifting are in place:After the completion of concrete structural slab maintenance lift bottom steel truss, using pre-buried can Recovery type screw rod and local recoverable screw rod fix bottom steel truss;
Step 3, removable jointing plate, additional jointing plate are installed:It is welded to connect removable after bottom steel truss installation Jointing plate, according to the actual quantity determining additional jointing plate of engineering, additional jointing plate is arranged on removable jointing plate;
Step 4, guide rails assembling:Guide rails assembling is in bottom steel truss top of the trellis;
Step 5, upper steel truss installa-tion:On guide rail, insertion top steel truss, forms embedded connection, embeds and connects After the completion of with bolt weldering mode connect top steel truss and bottom steel truss;
Step 6, drag-line are installed:Drag-line is installed between removable jointing plate and top steel truss end;
Step 7, scaffold formwork system are set up:Stretch out the foot that structure division sets up cantilevered structure using top steel truss Hand cradle formwork system, section of stretching out steel truss is as the bearing platform of scaffold formwork system.
Described pre-buried recoverable screw rod is arranged in the concrete floor under bottom steel truss, by PVC sleeve pipe, vertically Anchorage screw and anchoring top board composition, PVC sleeve pipe is placed on outside vertical anchorage screw, and anchoring top board passes through vertical anchorage screw and spiral shell Mother is fixedly installed on boom plate under bottom steel truss;Vertical anchorage screw is provided with direction hinge.Vertical anchorage screw can be suitable At position, setting direction hinge, makes screw rod be easy to folding and unfolding.Steel truss lays down anchoring top board when removing, can be light by rapping screw tip Easily dismantle whole anchoring fastener, can be used in turn.
Described local recoverable screw rod, is arranged in the structural column near steel truss, is provided with bolt hole in structural column, After steel truss installation, the screw rod being connected on steel truss is screwed into bolt in the hole.During dismounting, screw rod is removed, and bolt hole stays knot Do not remove in structure post.
Described removable jointing plate connects bottom steel truss and is placed on concrete floor, passes through in advance with concrete floor Bury recoverable screw rod to connect, its role is to increase the heavy burden of bottom steel truss, it is to avoid the toppling and sliding of bottom steel truss. Additional jointing plate is concrete block, is placed on removable jointing plate, coordinates ballast.
Described guide rail is arranged at bottom steel truss upper string board, embedded connection top steel truss, and guide rail both sides are provided with cunning Wheel, top steel truss utilizes the pulley in guide rail to realize sliding, and for ensureing the safety of construction, makes except connecting fit on guide rail Connect top steel truss and bottom steel truss with the mode of bolt weldering.
Described drag-line, connects steel truss and removable jointing plate, drag-line one end is provided with termination and is embedded in removable In jointing plate, the other end connects steel truss frame system.Its object is to assist, using existing structure, the load carrying steel truss.
The present invention has advantages below and beneficial effect:
1st, this bearing platform with bearing capacity more preferably can replace traditional I-steel using lighter steel truss, not only protect Demonstrate,prove the safety of structure, and various informative due to steel truss, it is applicable to the cantilevered structure of large span.
2nd, this bearing platform major part is all detachable, repeats and is used in multiple projects, improves economic benefit.
3rd, this load-carrying members is provided with the measures of multiple protection existing structures, it is to avoid tradition encorbelments bearing platform to existing structure Destruction.
Brief description:
Fig. 1-steel truss bearing platform elevation.
Fig. 2-recoverable screw rod bar elevation.
Fig. 3-local recoverable screw rod elevation.
Fig. 4-guide rail elevation.
1- bottom steel truss;2- top steel truss;3- scaffold formwork system;4- concrete floor;Boom plate under 5-;On 6- Boom plate;7- local recoverable screw rod;8- guide rail;9- recoverable screw rod;10- structural column;11- pre embedded bolt;12- is removable Jointing plate;The additional jointing plate of 13-;14- drag-line;15- drag-line end plate;16- screw rod bellend;17- direction is cut with scissors;18- anchoring top Plate;19- nut;20- screw rod;21- PVC sleeve pipe;The removable screw rod of 22-;23- screw hole;24- pulley.
Specific embodiment
Present embodiment emphasis illustrates construction featuress according to the present invention and effect, and it is as follows to coordinate accompanying drawing to describe in detail:
High-altitude overhanging superposed type steel truss bearing platform as shown in Figure 1, by bottom steel truss 1, top steel truss 2, foot Hand cradle formwork system 3, recoverable screw rod 9, local recoverable screw rod 7, guide rail 8, removable jointing plate 12, additional jointing plate 13rd, drag-line 14, structural column 10 form.Bottom steel truss 1 is fixed on mixed by recoverable screw rod 9, local recoverable screw rod 7 On solidifying Tulou plate.Removable jointing plate 12 is connected to bottom steel truss 1, and additional jointing plate 13 is placed on removable jointing plate 12 On.Top steel truss 2 passes through guide rail 8 and bottom steel truss 1 connects, and coordinates with bolt-weld joint simultaneously.Drag-line 14 connects removable Jointing plate 12 and top steel truss 2.
As shown in Fig. 2 recoverable screw rod is by screw rod bellend 16, anchor top board 18, nut 19, screw rod 20, direction hinge 17th, PVC sleeve pipe 21 forms.PVC sleeve pipe 21 is embedded in concrete floor in advance, after steel truss place after, insertion screw rod 20 to In PVC sleeve pipe 21, anchoring top board is positioned on boom plate 5 under bottom steel truss, fixes bottom steel truss using tightening nut 19. Screw rod 20 is provided with direction hinge 17, is easy to folding and unfolding setting.Back out nut 19 after the completion of construction, take off anchoring top board 18, rap spiral shell Can dismantle whole anchoring fastener easily in bar 20 top, can be used in turn.
As shown in figure 3, local recoverable screw rod 7 is by the screw hole 23 being embedded in structural column 10 and removable screw rod 22 Composition, screw hole 23 is just imbedded wherein when structural column is constructed, and the later stage does not also remove.Removable screw rod 22 is pacified in bottom steel truss It is screwed into after dress in screw hole 23, fix the lower boom plate 6 of bottom steel truss.Later stage back-outs removable screw rod 22 when removing, and repeats Use.
As shown in figure 4, top steel truss 2 is connected by guide rail 8 with bottom steel truss upper string board 6, in guide rail, it is provided with pulley 24, facilitate top steel truss to horizontally slip.In order to ensure the safety of structure, top steel truss 2 and bottom steel truss upper string board 6 It is also carried out being welded to connect.
The construction method of above-mentioned high-altitude overhanging superposed type steel truss bearing platform, including following construction procedure:
Step one, screw rod associated part are pre-buried:The PVC set of recoverable screw rod before concrete construction, need to be imbedded Pipe 21, the vertical anchorage screw 20 and local recoverable screw rod screw hole in structural column;
Step 2, steel truss lifting are in place:After the completion of concrete structural slab maintenance lift bottom steel truss, using pre-buried can Recovery type screw rod 9 and local recoverable screw rod 7 fix bottom steel truss 1.
Step 3, removable jointing plate 12, additional jointing plate 13 are installed:It is welded to connect after bottom steel truss 1 installation Removable jointing plate 12, according to the actual quantity determining additional jointing plate 13 of engineering, additional jointing plate 13 is arranged at removable pressure On weight plate 12.
Step 4, guide rails assembling:Guide rail 8 is arranged on bottom steel truss 1 top;
Step 5, top steel truss 2 are installed:On guide rail 8, insertion top steel truss 2, forms embedded connection, the company of embedding Top steel truss 2 and bottom steel truss 1 is connected with bolt weldering mode after the completion of connecing;
Step 6, drag-line 14 are installed:Drag-line 14 is installed between removable jointing plate 12 and top steel truss 2 end;
Step 7, scaffold formwork system are set up:Stretch out the foot that structure division sets up cantilevered structure using top steel truss 2 Hand cradle formwork system, section of stretching out steel truss is as the bearing platform of scaffold formwork system.

Claims (6)

1. a kind of construction method of high-altitude overhanging superposed type steel truss bearing platform it is characterised in that described bearing platform mainly by Bottom steel truss, top steel truss, scaffold formwork system, pre-buried recoverable screw rod, local recoverable screw rod, guide rail, Removable jointing plate, additional jointing plate, drag-line and structural column composition;Bottom steel truss passes through pre-buried recoverable screw rod, locally Recoverable screw rod is fixed on constructs on the structural column completing, is connected with removable fixing jointing plate and adds outside bottom steel truss Jointing plate;Top steel truss utilizes bolt weldering combination and guide rail to connect bottom steel truss, in removable jointing plate and top steel truss It is provided with drag-line between end;Top steel truss stretch out become outside structure top cantilevered structure scaffold formwork system load-bearing put down Platform;
The construction method of high-altitude overhanging superposed type steel truss bearing platform includes following construction procedure:
Step one, screw rod associated part are pre-buried:Before concrete construction, imbed the PVC sleeve pipe of recoverable screw rod and erect To anchorage screw, screw hole in structural column for the local recoverable screw rod;
Step 2, steel truss lifting are in place:Bottom steel truss is lifted, using pre-buried recyclable after the completion of concrete structural slab maintenance Formula screw rod and local recoverable screw rod fix bottom steel truss;
Step 3, removable jointing plate, additional jointing plate are installed:It is welded to connect removable ballast after bottom steel truss installation Plate, according to the actual quantity determining additional jointing plate of engineering, additional jointing plate is arranged on removable jointing plate;
Step 4, guide rails assembling:Guide rails assembling is in bottom steel truss top of the trellis;
Step 5, upper steel truss installa-tion:On guide rail, insertion top steel truss, forms embedded connection, and embedded connection completes Connect top steel truss and bottom steel truss with bolt weldering mode afterwards;
Step 6, drag-line are installed:Drag-line is installed between removable jointing plate and top steel truss end;
Step 7, scaffold formwork system are set up:Stretch out the scaffold that structure division sets up cantilevered structure using top steel truss Formwork system, section of stretching out steel truss is as the bearing platform of scaffold formwork system.
2. construction method according to claim 1 is it is characterised in that pre-buried recoverable screw rod is arranged at bottom steel truss Under concrete floor in, by pvc pipe, vertical anchorage screw and anchoring top board form, PVC sleeve pipe is placed on vertical anchorage screw Outward, anchoring top board is fixedly installed on boom plate under bottom steel truss by vertical anchorage screw and nut;On vertical anchorage screw It is provided with direction hinge.
3. construction method according to claim 1 is it is characterised in that local recoverable screw rod is arranged in structural column.
4. construction method according to claim 1 is it is characterised in that removable jointing plate passes through pre-buried returning with concrete Receipts formula screw rod connects, and additional jointing plate is concrete block, is placed on removable jointing plate.
5. construction method according to claim 1 is it is characterised in that guide rail is arranged at the upper string board of bottom steel truss, embedding Enter formula and connect top steel truss, guide rail both sides are provided with pulley, top steel truss utilizes the pulley in guide rail to realize sliding.
6. construction method according to claim 1 is it is characterised in that drag-line one end is provided with termination and is embedded in removable In jointing plate, the other end connects top steel truss.
CN201510282733.3A 2015-05-28 2015-05-28 A kind of construction method of high-altitude overhanging superposed type steel truss bearing platform Active CN104989092B (en)

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CN105926915B (en) * 2016-05-05 2018-02-02 河南省第一建筑工程集团有限责任公司 Grow the construction method for workbench of encorbelmenting in Bailey beam high-altitude
CN108222480B (en) * 2017-12-15 2024-02-02 北京工业大学 High-altitude cantilever main truss type steel formwork construction platform
CN111042510A (en) * 2020-01-02 2020-04-21 中国建筑第八工程局有限公司 Construction platform for constructing daylighting roof and construction method thereof

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CN104100090A (en) * 2014-07-17 2014-10-15 成都市第四建筑工程公司 High-altitude comprehensive construction method of big-cantilever steel truss structure
CN104389419A (en) * 2014-11-18 2015-03-04 杭州江润科技有限公司 Cantilevered formwork platform installation structure and construction method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2892438A1 (en) * 2005-10-20 2007-04-27 Roger Morel Safety scaffolding for building e.g. single family house, construction, has pair of brackets fixed to wall, upper metallic part comprising hook for maintaining upper part at wall, and lower metallic part ensuring support at wall
CN102733606A (en) * 2011-04-08 2012-10-17 中国建筑第八工程局有限公司 Construction method of high large cantilever structure
CN203145425U (en) * 2013-03-21 2013-08-21 浙江大学城市学院 Binding type cable crane truss cantilever scaffold
CN104100090A (en) * 2014-07-17 2014-10-15 成都市第四建筑工程公司 High-altitude comprehensive construction method of big-cantilever steel truss structure
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Inventor after: Wu Zerui

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Effective date of registration: 20170609

Address after: Luohu District Baoan road Shenzhen city Guangdong province 518000 No. 3083 Caiwuwei development building 2101

Patentee after: Shenzhen Golden Century Engineering Industry Co., Ltd.

Address before: Gongshu District Shi Xiang Road Hangzhou city Zhejiang province 310015 and Hangzhou Road intersection C Wanda Plaza office building room 1901

Patentee before: Hangzhou Jiang Run Science and Technology Ltd.