CN107605177A - The construction method of efficient precast floor slab and its independent support frame - Google Patents

The construction method of efficient precast floor slab and its independent support frame Download PDF

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Publication number
CN107605177A
CN107605177A CN201711025174.3A CN201711025174A CN107605177A CN 107605177 A CN107605177 A CN 107605177A CN 201711025174 A CN201711025174 A CN 201711025174A CN 107605177 A CN107605177 A CN 107605177A
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CN
China
Prior art keywords
floor slab
precast floor
construction
concrete
support frame
Prior art date
Application number
CN201711025174.3A
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Chinese (zh)
Inventor
许龙迪
王振兴
王卫新
刘毅夫
孙磊
魏燕
彭景祥
张皞
Original Assignee
北京城建北方建设有限责任公司
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Application filed by 北京城建北方建设有限责任公司 filed Critical 北京城建北方建设有限责任公司
Priority to CN201711025174.3A priority Critical patent/CN107605177A/en
Publication of CN107605177A publication Critical patent/CN107605177A/en

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Abstract

The invention discloses a kind of efficiently construction method of precast floor slab and its independent support frame.The construction method comprises the following steps:Step 1, factory pour a part of concrete of precast floor slab;Step 2, transport to scene, independent support frame installs;Step 3, precast floor slab are lifted to working face;Step 4, gap is handled between precast floor slab;Step 5, the concrete of precast floor slab remainder is poured, and carry out concrete topping and receive face maintenance.The construction method of the efficient precast floor slab is using the prefabricated concrete for pouring a build floor part after factory's progress reinforcing bar colligation, after steam curing reaches design strength, the concrete of build floor remainder is poured in transport to job site, the secondary joist and form surfacing of conventional art can be omitted, simplify construction technology, installing for secondary joist and form surfacing is eliminated, the technique that also simplify support frame, improves efficiency of construction.

Description

The construction method of efficient precast floor slab and its independent support frame

Technical field

The present invention relates to the realm of building construction, more particularly to a kind of efficiently construction method of precast floor slab and its independent branch Support.

Background technology

The construction technology of traditional precast floor slab is:Set up support scaffolding → in caving support → jacking at the top of support frame → laying form surfacing on secondary joist → is placed and lays secondary joist on main joist → main joist, primary and secondary skeletal frame forms netted to tie up Prick floor bar → casting concrete.

I.e. conventional art relies primarily on manually, wastes time and energy.Support frame and template system constructing operation are cumbersome, installation and Removing needs to carry out the technique repeated twice, and simply process sequence is opposite.On the other hand, floor bar needs all scenes Colligation, artificial amount are very huge.While today's society, cost of labor rapid increase, seriously add engineering construction into This.And the artificial colligation construction quality in scene is not easy to ensure, more relies on workmen's quality.Traditional handicraft working procedure is cumbersome Complexity, it is more time-consuming, seriously affect construction speed.In addition, traditional handicraft needs substantial amounts of progress cast-in-place concrete work Industry, under the serious background of contemporary haze, detrimental effect is served for green construction.

Further, prior art formwork-support system technique is cumbersome.Because of all poured in place concretes of upper strata floor, So support body requires more strict, scaffold upright rod spacing is short, and cross bar need to will be arranged between vertical rod, whole support body is formed one Individual entirety, meets stability requirement.Further, since poured in place concrete all is used, so must have above primary and secondary skeletal frame Template, because concrete has mobility before solidification.

The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without It should be considered as recognizing or imply that the information structure has been the existing skill well known to persons skilled in the art in any form Art.

The content of the invention

It is an object of the invention to provide a kind of construction method of the simple and reasonable efficient precast floor slab of step and its Independent support frame, the construction method of the efficient precast floor slab pour a build floor part using prefabricated after factory's progress reinforcing bar colligation Concrete, steam curing reach design strength after, transport to job site and pour the concrete of build floor remainder, can The secondary joist and form surfacing of conventional art are omitted, simplifies construction technology, eliminates installing for secondary joist and form surfacing, The technique that also simplify support frame, improves efficiency of construction.

To achieve the above object, the invention provides a kind of construction method of efficiently precast floor slab, comprise the following steps: Step 1, factory pour a part of concrete of precast floor slab;Step 2, transport to scene, independent support frame installs;Step Three, precast floor slab is lifted to working face;Step 4, gap is handled between precast floor slab;Step 5, pour precast floor slab remainder The concrete divided, and carry out concrete topping and receive face maintenance.

Preferably, in above-mentioned technical proposal, after a part of thickness concrete for pouring precast floor slab, and prefabricated building make it that A part of assembling reinforcement of plate is exposed.

Preferably, in above-mentioned technical proposal, it is pitted skin to pour layer above a part of thickness concrete of precast floor slab.

Preferably, in above-mentioned technical proposal, gap processing includes side seam processing between precast floor slab and middle seam is handled, described Side seam processing is using the longitudinally disposed flitch of handing-over internal corner part in precast floor slab and structural wall, and using steel nail nail within the walls, Patch sponge strip, prevents concrete spillage on the inside of flitch;Handled for the middle seam less than 200mm using membrane module is hung, for Middle seam more than 200mm needs to set independent support, respectively supporting module panel, secondary main joist, jacking and support body.

Present invention also offers a kind of independent support frame of the efficiently construction method of precast floor slab described above, independent branch Support includes:Tripod, lower vertical rod, upper pright stanchion, Adjusting bolt Adjusting screw and jacking, the tripod are umbrella-shaped structure, are located in described The bottom of lower vertical rod, sleeve structure is formed in the lower vertical rod of upper pright stanchion insertion, pin hole is offered on the upper pright stanchion, institute The top for stating lower vertical rod offers pin strip hole, and with being adapted to the external screw thread that is spirally connected with Adjusting bolt Adjusting screw, by the first pin from The strip hole of lower vertical rod and the pin hole of upper pright stanchion pass through, and stuck using Adjusting bolt Adjusting screw fixation, can pass through Adjusting bolt Adjusting screw Rotation adjustment upper pright stanchion, the entire length of lower vertical rod;The jacking is fixedly installed on the top of upper pright stanchion, for placing main dragon Bone.

Preferably, in above-mentioned technical proposal, tripod includes:Sleeve pipe, otic placode, supporting leg and connecting plate, described sleeve pipe two It is individual, the bottom of lower vertical rod is located in by the second pin interval, the otic placode is fixed on the week side of boss of two sleeve pipes, the supporting leg Upper end and the otic placode of upper square casing be hinged;One end of the connecting plate and the otic placode of lower square casing are hinged, the connecting plate The lower end of the other end and supporting leg is hinged.

Compared with prior art, the present invention has the advantages that:The construction method of the efficient precast floor slab uses work Factory carries out the prefabricated concrete for pouring a build floor part after reinforcing bar colligation, and after steam curing reaches design strength, transport is extremely constructed The concrete of cast in situs floor remainder, the secondary joist and form surfacing of conventional art can be omitted, simplifies construction work Skill, installing for secondary joist and form surfacing is eliminated, the technique that also simplify support frame, improves efficiency of construction.

Brief description of the drawings

Fig. 1 is the structural representation of the independent support frame of the efficient construction of precast floorslab of the present invention.

Fig. 2 is the structural representation of the hoisting beam of the efficient construction of precast floorslab of the present invention.

Fig. 3 is the structural representation of the hoisting beam use state of the efficient construction of precast floorslab of the present invention.

Fig. 4 is the structural representation for hanging membrane module use state of the efficient construction of precast floorslab of the present invention.

Fig. 5 is the structural representation of the independent support use state of the efficient construction of precast floorslab of the present invention.

Embodiment

Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention Shield scope is not limited by embodiment.

Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other Element or other parts.

According to comprising the following steps for the construction method of the efficient precast floor slab of the specific embodiment of the invention:

Step 1, factory pour a part of concrete of precast floor slab;

Producer formulates detailed prefabricated board scheme according to the size of floor, thickness, arrangement of reinforcement in design drawing, and through design Unit, Party A, management, unit in charge of construction are agreed to.Prefabricated concrete floor is then begun to, the colligation steel on the processing platform of factory Muscle, and a part of thickness concrete is poured, and ensure a part of reinforcing steel bars exposed.

Wherein, layer is pitted skin above the precast floor slab, it is ensured that transports to job site and pours the mixed of build floor remainder Solidifying soil pour combined with this part concrete it is closely knit.

For example, the thickness of slab of precast floor slab is 100mm, general factory carries out reinforcing bar colligation after-pouring 60mm thickness concrete, and It is pitted skin to ensure that 60mm thickness position pours face, after steam curing reaches design strength, transports to job site working face, enters The remaining 40mm thickness concrete of row pours.The reason for 60mm thickness position surface layer is pitted skin is to allow two-step pouring concrete, because For pitted skin the reason for, can preferably form entirety.Due to being prefabricated board, so 60mm part can substitutes traditional skill The secondary joist and form surfacing (main joist must have) of art, so so, simplifying construction technology, eliminate secondary joist With installing for form surfacing, the technique that also simplify support frame.Construction technology is simple.Figure below is independent support frame, and top is Main joist flitch.

Step 2, transport to scene, independent support frame installs;

As shown in figure 1, independent support frame includes:Tripod, lower vertical rod 11, upper pright stanchion 12, Adjusting bolt Adjusting screw 19 and jacking 13.Wherein, tripod is umbrella-shaped structure, including:Sleeve pipe 14, otic placode 15, supporting leg 16 and connecting plate 17, sleeve pipe 14 are two, are led to The bottom that the first pin interval is located in lower vertical rod 11 is crossed, otic placode 15 is fixed on the week side of boss of two sleeve pipes 14, the upper end of supporting leg 16 It is be hinged with the otic placode 15 of upper square casing 14;The otic placode 15 of one end of connecting plate 17 and lower square casing 14 is be hinged, connecting plate 17 it is another One end and the lower end of supporting leg 16 are hinged;When in use, the first pin of lower square casing 14 is extracted, lower square casing 14 can be under The slide downward of vertical rod 11, can put down supporting leg, not used time, can be lower square casing 14 as the tripod of stable vertical rod Pull up, tripod is received and (completes aforesaid operations using the axle of otic placode) together.

Upper pright stanchion 12 is smaller than the diameter of lower vertical rod 11, is inserted by its lower end in lower vertical rod and forms sleeve structure, upper pright stanchion Pin hole 18 is offered on 12, the top of lower vertical rod 11 offers pin strip hole, and is spirally connected with being adapted to Adjusting bolt Adjusting screw 19 External screw thread, the second pin 20 is passed through from the strip hole of lower vertical rod and the pin hole of upper pright stanchion, and solid using Adjusting bolt Adjusting screw 19 It is fixed stuck, upper pright stanchion 12, the entire length of lower vertical rod 11 can be adjusted by the rotation of Adjusting bolt Adjusting screw 19, it is ensured that upper pright stanchion is received To after downward load, upper pright stanchion will not fall.

Jacking 13 is fixedly installed on the top of upper pright stanchion 12, for placing main joist.

Step 3, precast floor slab are lifted to working face;

As shown in Figures 2 and 3, the lifting of precast floor slab uses hoisting beam, and the hoisting beam is mainly cut laggard using steel plate Row is welded, including:Hanger 21, upper cross plate 22, side plate 23, header board 24, reinforcement riser 25, keel plate 26 and suspension rod 27. Hanger 21 is arranged in pairs in the top surface of upper cross plate 22, for being used cooperatively with lifting appliance.Side plate 23 is arranged in pairs in upper cross plate 22 both sides, header board 24 are secured transverse in the middle part of biside plate by its both ends.It is multiple to strengthen riser 25, passes through its both ends It is fixed on vertically between upper cross plate 22 and header board 24, for improving the mechanical strength of hoisting beam.Keel plate 26 to be multiple, Every being fixed on below header board 24, suspension rod 27 is located in multiple keel plates 26, and is welded and fixed, will for wearing lifting rope Precast floor slab is lifted to working face.

Preferably, to ensure that stress is good, upper cross plate 22 and header board 24 are whole plate (being integrally formed), and suspension rod 27 is straight More than footpath 20mm round steel (reinforcing bar), and whole.

Step 4, gap is handled between precast floor slab;

It is support system above, precast floor slab is lifted to the main joist of independent support frame there can be two " seams ". One is side seam, and one is middle seam.

Wherein, side seam is handled:In precast floor slab and the handing-over internal corner part of structural wall, longitudinally disposed 100*100mm2Wood Side, and using steel nail nail within the walls, patch sponge strip, prevents concrete spillage on the inside of flitch.

Middle seam processing:1. the middle seam less than 200mm is handled using membrane module is hung, without supporting frame.

Include as shown in figure 4, this hangs membrane module:Spiral 31, screw rod 32, removable cone 33, flitch 34 and clamp 35.Wherein, spiral 31 is laterally set, a diameter of 10mm, and length is longer 100mm than pending middle seam or so.Screw rod 32 is vertical Set, upper end and the middle part of spiral 31 are welded and fixed, and the center of removable cone 33 offers the perforation of the first screw rod, wears At the middle part of screw rod 32.The middle part of flitch 34 offers the perforation of the second screw rod, is located on screw rod 32, and be located at removable cone 33 lower section.Clamp 35 is adapted to screw rod 32 and is spirally connected, and blocks flitch 34 from below.When pouring, screw rod 32 and flitch 34 are laid The both sides up and down stitched in precast floor slab 36, screw rod 32 are cast in concrete, and the part that bottom is exposed on the outside needs to cut Fall, (because screw rod is irony, it may appear that the situation of iron rust, so setting removable cone, so, cone is in concrete building A bellmouth is formed on plate, the screw rod in hole can be also cut away, then by hole with a label higher than concrete floor Slightly expanded concrete blocks, it is ensured that screw rod is not exposed, prevents from getting rusty).Reinforced followed by flitch and clamp, check and accept and close Lattice after-pouring concrete, after reaching strength of mould stripping, first tear clamp open, then tear keel and removable cone open, cut reinforcing bar in bellmouth, Finally blocked.

2. as shown in figure 5, the middle seam more than 200mm needs to set independent support, difference supporting module panel 37, secondary master Keel 38, jacking and support body.

Step 5, the concrete of precast floor slab remainder is poured, and carry out concrete topping and receive face maintenance.

To sum up, the construction method of the efficient precast floor slab pours build floor one using prefabricated after factory's progress reinforcing bar colligation The concrete divided, after steam curing reaches design strength, transport to job site and pour the concrete of build floor remainder, energy The secondary joist and form surfacing of conventional art are enough omitted, construction technology is simplified, eliminates the branch of secondary joist and form surfacing If also simplify the technique of support frame, efficiency of construction is improved.

The description of the foregoing specific illustrative embodiment to the present invention is to illustrate and the purpose of illustration.These are retouched State and be not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out a lot Change and change.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles and in fact of the present invention Border is applied, so that those skilled in the art can realize and utilize a variety of exemplary embodiment party of the present invention Case and various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.

Claims (6)

1. a kind of construction method of efficiently precast floor slab, it is characterised in that comprise the following steps:
Step 1, factory pour a part of concrete of precast floor slab;
Step 2, transport to scene, independent support frame installs;
Step 3, precast floor slab are lifted to working face;
Step 4, gap is handled between precast floor slab;
Step 5, the concrete of precast floor slab remainder is poured, and carry out concrete topping and receive face maintenance.
2. the construction method of efficiently precast floor slab according to claim 1, it is characterised in that pour one of precast floor slab After dividing thickness concrete, and make it that a part of assembling reinforcement of precast floor slab is exposed.
3. the construction method of efficiently precast floor slab according to claim 2, it is characterised in that pour one of precast floor slab It is pitted skin to divide layer above thickness concrete.
4. the construction method of efficiently precast floor slab according to claim 1, it is characterised in that gap is handled between precast floor slab Including side seam processing and the processing of middle seam, the side seam processing is longitudinally set using the handing-over internal corner part in precast floor slab and structural wall Flitch is put, and using steel nail nail within the walls, patch sponge strip, prevents concrete spillage on the inside of flitch;For the middle seam less than 200mm Handled using membrane module is hung, need to set independent support for the middle seam more than 200mm, respectively supporting module panel, secondary Main joist, jacking and support body.
5. a kind of independent support frame of the construction method of efficient precast floor slab as any one of Claims 1-4, it is special Sign is that the independent support frame includes:Tripod, lower vertical rod, upper pright stanchion, Adjusting bolt Adjusting screw and jacking, the tripod are umbrella Shape structure, the bottom of the lower vertical rod is located in, the upper pright stanchion, which is inserted in lower vertical rod, forms sleeve structure, on the upper pright stanchion Pin hole is offered, the top of the lower vertical rod offers pin strip hole, and has the outer spiral shell for being adapted to and being spirally connected with Adjusting bolt Adjusting screw Line, the first pin is passed through from the strip hole of lower vertical rod and the pin hole of upper pright stanchion, and it is stuck using Adjusting bolt Adjusting screw fixation, can Pass through the rotation adjustment upper pright stanchion of Adjusting bolt Adjusting screw, the entire length of lower vertical rod;The jacking is fixedly installed on the top of upper pright stanchion, For placing main joist.
6. independent support frame according to claim 5, it is characterised in that the tripod includes:Sleeve pipe, otic placode, supporting leg And connecting plate, described sleeve pipe are two, and the bottom of lower vertical rod is located in by the second pin interval, the otic placode is fixed on two The week side of boss of sleeve pipe, the upper end of the supporting leg and the otic placode of upper square casing are hinged;One end of the connecting plate and the ear of lower square casing Plate is hinged, and the other end of the connecting plate and the lower end of supporting leg are hinged.
CN201711025174.3A 2017-10-27 2017-10-27 The construction method of efficient precast floor slab and its independent support frame CN107605177A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2024165A6 (en) * 1990-03-27 1992-02-16 Lopez Martinez Luis Antonio Safety device for struts
CN2773239Y (en) * 2005-03-23 2006-04-19 陈传为 Adjustable template supporting pillar
CN103074952A (en) * 2012-12-31 2013-05-01 鹏程住宅工业化材料江苏有限公司 Semi-prefabricated reinforced concrete floor as well as production method and cast-in-place method thereof
CN104806021A (en) * 2015-04-20 2015-07-29 中国十七冶集团有限公司 Device for assisting bottom grouting of prefabricated concrete wallboard
CN204826619U (en) * 2015-06-16 2015-12-02 中国新兴保信建设总公司 Mould is hung to superimposed sheet instrument formula
CN106703269A (en) * 2016-12-30 2017-05-24 山东省建筑科学研究院 Prestressed concrete superimposed sheet with steel trusses and manufacturing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2024165A6 (en) * 1990-03-27 1992-02-16 Lopez Martinez Luis Antonio Safety device for struts
CN2773239Y (en) * 2005-03-23 2006-04-19 陈传为 Adjustable template supporting pillar
CN103074952A (en) * 2012-12-31 2013-05-01 鹏程住宅工业化材料江苏有限公司 Semi-prefabricated reinforced concrete floor as well as production method and cast-in-place method thereof
CN104806021A (en) * 2015-04-20 2015-07-29 中国十七冶集团有限公司 Device for assisting bottom grouting of prefabricated concrete wallboard
CN204826619U (en) * 2015-06-16 2015-12-02 中国新兴保信建设总公司 Mould is hung to superimposed sheet instrument formula
CN106703269A (en) * 2016-12-30 2017-05-24 山东省建筑科学研究院 Prestressed concrete superimposed sheet with steel trusses and manufacturing method

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