CN106639094A - Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building - Google Patents
Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building Download PDFInfo
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- CN106639094A CN106639094A CN201710093705.6A CN201710093705A CN106639094A CN 106639094 A CN106639094 A CN 106639094A CN 201710093705 A CN201710093705 A CN 201710093705A CN 106639094 A CN106639094 A CN 106639094A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/32—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material
- E04C2/324—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material with incisions or reliefs in the surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides an assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for an aggregate building. The invention relates to a building structure laminated board, aiming at solving the problems in the prior art that the tensile stress generated by steel bars in a utilization process of the laminated board after the bidirectional laminated board is formed by the steel bars which are transversely arranged along a pre-fabricated bottom board, and the construction is complicated. According to the bidirectional laminated board, a prefabricated steel reinforced concrete board is a unidirectional board and a plurality of longitudinal stressed steel bars, which are arrayed in parallel, are arranged in the board along the spanning direction of the prefabricated steel reinforced concrete board; a plurality of communicated reversed grooves are formed in the bottom of the board along the board width direction of the prefabricated steel reinforced concrete board; post-constructed steel bars are arranged in the reversed grooves; and a post-poured concrete laminated layer is formed by pouring concrete on the surfaces of the plurality of prefabricated steel reinforced concrete boards. According to the assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board, the bidirectional stressing of the laminated board can be realized by adopting a technology of assembling the prefabricated unidirectional boards in a post-tensioned pre-stressing manner; the tensile effect of the steel bars can tend to be sufficiently expressed or can be sufficiently expressed by pre-tensioning; and the arrangement of transverse steel bars and the application of pre-stress are convenient to realize.
Description
Technical field
The present invention relates to a kind of building structure superimposed sheet, and in particular to a kind of glomeration Building assembling formula post-tensioned prestressed reinforcement
Concrete bidirectional laminated slab.
Background technology
1st, the generation of iterative structure
The earliest form of xoncrete structure is cast-in-place monolithic reinforced-concrete structures, and this structure is because with globality
Well, the advantages of rigidity is big, durability is strong is widely adopted, but while there is big template consumption, long construction period, difficult realization industry
The deficiencies such as metaplasia is produced, difficult control construction quality.With the development of construction, precast reinforced concrete structure is developed,
The advantage of this structure is that speed of application is fast, can save many templates and support, but but there is also very big shortcoming, such as pre-
Lifting component processed is difficult, and structural integrity, shock resistance, crack resistance and the impermeability being assembled is all very poor.
Consider excellent, the shortcoming of both the above version, collect the length of both cast-in-place overall structure and fabricated construction,
Concrete folding structure is just gradually greatly developed and applied.On coagulation iterative structure be on prefabricated components plus pour one layer mix
Solidifying soil, and form a kind of two-step pouring xoncrete structure.This structure has the dual characteristicses of fabricated construction and cast-in-place structural concurrently,
Compared with fabricated construction, the rigidity of its structure, globality and anti-seismic performance are superior；Compared with cast-in-place structural, its structure has
The advantages of save resources, easy construction, reduction of erection time.In view of the various advantages of this structure, range of application constantly expands, constantly
This kind of iterative structure of research and development is a current important trend both domestic and external.
2nd, the loading characteristic of iterative structure
Iterative structure can be divided into once force-bearing iterative structure and secondary loading iterative structure by its stress stage.Once force-bearing
Iterative structure be construction stage prefabricated part hanging it is in place after, secure support is set in its bottom, and prefabricated components are only used as folding
The template of layer cast-in-place concrete is closed, after overlapping layer concrete reaches design strength support, whole lotuses of operational phase are removed again
Load is acted on by the overlapping section shared formed after two-step pouring, and the stress of whole cross section only occurs once.Secondary loading is folded
Close structure be construction stage prefabricated components install it is in place after, the prefabricated components bottom of freely-supported be not provided with support, directly with prefabricated
Component as overlapping layers cast-in-place concrete template and bear the dead load and construction loads of construction stage, overlapping layers coagulation is poured after
Soil is reached after design strength, by the secondary live load for overlapping the dead load and operational phase added after section undertakes for pouring and being formed, is folded
The stress state for closing section is produced by stress twice.
Obvious once force-bearing iterative structure is provided with support due to the construction stage, and its stressing conditions pours structure stress situation with whole
It is essentially identical, thus its stress performance also substantially close to；And secondary loading iterative structure does not set support due to the construction stage so as to both
It is again wo-stage loading to manufacture for the two-stage, and entirely different with the whole stressing conditions for pouring plate, its stress performance difference is very big.
3rd, superimposed sheet classification
(1) plate superimposed sheet
The base plate of plate superimposed sheet is generally pretensioned prestressing solid slab, is earliest superimposed sheet form, and base plate is firm
Degree is less than normal, applies man-hour requirement and arranges temporary support, and inconvenience is stacked and transported, and the piece of plate side constructs the cracking resistance to superimposed sheet
Property and globality have a significant impact.
To increase the cohesive force of new-old concrete, the out of plane stiffness of base plate is improved, steel bar girder is set in base plate, so as to
Define the precast reinforced frame concrete floor that spreads out.
(2) sandwich template superimposed sheet
By the hollow part lightweight of the hollow template superimposed sheet being made up of prefabricated sandwich base plate 20 and cast-in-place concrete 21
Material 22 fill then formation sandwich template superimposed sheet, the structural representation of precast prestressed sandwich base plate superimposed sheet as shown in Figure 1,
Such superimposed sheet is from heavy and light, and heat insulating and sound insulating better performances.
(3) hollow template superimposed sheet
Hollow template superimposed sheet deadweight is less, it is adaptable to Span Slab.The structural representation of monoblock type prestressed hollow slab
As shown in Figure 2, such superimposed sheet typically adopts precast prestressed hollow base plate to figure, but shearing resistance, shock resistance are poor compared with solid slab.
(4) base plate superimposed sheet with ribbing
The base plate of base plate superimposed sheet with ribbing carries rib, and rib increased the rigidity of base plate, can not set or set less during construction and face
When support, so as to convenient construction, the reduction of erection time, reduce expense.Base plate can be divided into unidirectional rib base plate, in length and breadth rib according to rib of slab form
Base plate etc..
Fig. 3 is the structural representation of prefabricated base plate with ribbing, and 41 represent T-shaped rib, and 42 represent preformed hole on rib, and 43 represent pre- answering
Power reinforcing bar, 44 represent suspension ring.Prefabricated band helps the base plate of base plate superimposed sheet in inverted " t " type or I shape, and vertical helping has set hole,
Be configured with cross-perforating reinforcing bar at the hole, and can preheating embedding line, plate face can configure negative muscle.Due to superimposed sheet the Double Faces to Install
Steel bar stress, and afterwards rich concrete can inject the hole for helping, and play pin key effect, can better ensure that new-old concrete
Cooperation, so the plate is easy to use, short time limit, expense is low.
Improving concrete folding structural behaviour in the past mainly has both direction：One is to realize holding for superimposed sheet prefabricated panel
Function is carried, inverted T-shaped base plate is generated or steel bar girder is set on base plate, reinforcing bar can select regular reinforcement or prestressing force in base plate
Reinforcing bar；Two is, to realize the two-way stress function of unidirectional superimposed sheet, to take and arrange hole in base plate flank and penetrate regular reinforcement,
Or along the horizontal method that reinforcing bar is stretched out from base plate of prefabricated panel so that lower floor's reinforcing bar bidirectional arrangements of superimposed sheet.
However, along prefabricated panel lateral arrangement reinforcing bar formed bidirectional laminated slab after, its cloth muscle direction is generally two-way
The long side direction of superimposed sheet, it can be seen from the loading characteristic of two-way slab, the drawing that the reinforcing bar is produced during superimposed sheet use should
Power is less than normal, and particularly with secondary loading iterative structure, reinforcing bar tension is less, causes the waste of steel.Additionally, for arranging
What prefabricated panel transverse steel was taken set rib or set stretches out the method for reinforcing bar can cause the construction complexity of base plate prefabrication process,
And contiguous prefabricated base plate longitudinal direction piece construction complexity, cause and overlap at the position panel stiffness low, the performance to superimposed sheet
Cause certain impact.
The content of the invention
The invention aims to solve the existing reinforcing bar along prefabricated panel lateral arrangement reinforcing bar after bidirectional laminated slab is formed
The tension produced during superimposed sheet use is less, sets rib or sets and stretch out for arrange that prefabricated panel transverse steel takes
The method of reinforcing bar can cause the problem of the construction complexity of base plate prefabrication process, and provide a kind of glomeration Building assembling formula posttension
Prestressed reinforced concrete bidirectional laminated slab.
Glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab of the present invention includes that polylith is precast reinforced mixed
Concrete board, rear pouring concrete overlapping layers and Duo Gen reinforcing bars, wherein precast rc slab are one-way slabs, along precast reinforced coagulation
Many Reinforcements arranged in parallel are arranged in the span direction of native plate in plate, and Reinforcement extends ejecting plate end, edge
The plate width direction of precast rc slab is provided with the inverted groove of multiple insertions in the bottom of plate, and multiple inverted grooves are along plate
Span direction be evenly arranged, the inverted groove of contiguous prefabricated armoured concrete slab aligns insertion along plate width direction, recessed being inverted
The rearmounted reinforcing bar of insertion is laid with groove, the pouring concrete after the surface casting concrete of polylith precast rc slab is formed
Overlapping layers, polylith precast rc slab is spliced into integral reinforced concrete by rear pouring concrete overlapping layers and rearmounted reinforcing bar
Plate.
The present invention is acted on for the tension for giving full play to the transverse steel that unidirectional prefabricated panel is set up, and simplifies prefabricated panel
Construction process, accelerate prefabricated panel speed of production, simplify longitudinal direction piece construction measure, lifted bidirectional laminated slab use
A kind of performance, it is proposed that concrete folding structure that can realize that there is two-way stress function after unidirectional prefabricated panel overlapping, i.e.,
Glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab.The glomeration Building assembling formula post-tensioned prestressing of the present invention
The two-way superimposed sheet of armored concrete is relatively small due to the thickness of prefabricated panel, and construction stage prefabricated components bottom need to arrange reliability
Support, belong to once force-bearing iterative structure.
Description of the drawings
Fig. 1 is the structural representation of existing precast prestressed sandwich base plate superimposed sheet；
Fig. 2 is the structural representation of existing monoblock type prestressed hollow slab；
Fig. 3 is the structural representation of existing prefabricated base plate with ribbing；
Fig. 4 is the structural representation of pin-connected panel post-tensioned prestressed reinforcement concrete bidirectional laminated slab of the present invention；
Fig. 5 is the structural representation of precast rc slab；
Fig. 6 is the side view of the precast rc slab with reinforcing bar；
Fig. 7 is the partial structural diagram of the precast rc slab described in specific embodiment 12；
Fig. 8 is the partial schematic diagram of the precast rc slab described in specific embodiment 12；
Fig. 9 is shelved on the organigram on blockwork for precast rc slab；
Figure 10 is the structural representation of Section A-A in Fig. 9.
Specific embodiment
Specific embodiment one：Present embodiment glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab
Including polylith precast rc slab 1, rear pouring concrete overlapping layers 4 and Duo Gen reinforcing bars, wherein precast rc slab 1 is
One-way slabs, along the span direction of precast rc slab 1 many Reinforcement 1-1 arranged in parallel are arranged in plate,
Reinforcement 1-1 extends ejecting plate end, and the plate width direction along precast rc slab 1 is provided with multiple insertions in plate bottom
Inverted groove 3, multiple inverted grooves 3 are evenly arranged along the span direction of plate, the inverted groove 3 of contiguous prefabricated concrete slab 1
Along plate width direction alignment insertion, the rearmounted reinforcing bar 2 of insertion is laid with inverted groove 3, in polylith precast rc slab
Surface casting concrete form rear pouring concrete overlapping layers 4, polylith precast rc slab 1 is overlapped by rear pouring concrete
Layer 4 and rearmounted reinforcing bar 2 are spliced into integral reinforced concrete plate.
To improve glomeration building prefabricated construction degree, by present embodiment pin-connected panel post-tensioned prestressed reinforcement Concrete Double
It is used for block masonry structure to superimposed sheet, as shown in Figure 9 and Figure 10,10 represent building block hole to structural representation in figure, and 11 represent
Vertical mortar joint, 12 represent building block, and 13 represent horizontal mortar joint.The precast rc slab end being shelved on blockwork is made
Concavo-convex Cha Kou, it is in building block hole location that plate end is recessed, plate end is protruded in building block flank position, so both can ensure that prefabricated
Armoured concrete slab is reliably bearing on blockwork, and the perfusion of concrete in building block hole is not interfered with again.It is precast reinforced
Concrete slab Reinforcement external part is respectively provided with concavo-convex Cha Kou, and Reinforcement sponson is pointed in building block hole
The heart；Rearmounted Bar Anchorage end in precast rc slab inverted groove arranges concavo-convex Cha Kou, and rearmounted reinforcing bar sponson refers to
To building block hole center.
Precast rc slab is one-way slabs in present embodiment, and the width of plate is significantly less than the span of plate, in plate
Reinforcement stretches out certain length at plate end, and Reinforcement spacing is 200mm, stretches out reinforcing bar and anchors into blockwork
In rear pouring concrete between concrete folding layer.Inverted groove is used to laying the rearmounted reinforcing bar of insertion, inverted groove and vertical
200mm is to steel bar stress spacing, pouring concrete is reached after some strength after, lays in the inverted groove of insertion and open
Rearmounted reinforcing bar is drawn, the assembled integral armoured concrete slab of polylith precast rc slab is finally made.The size of inverted groove
The protective layer thickness of rearmounted reinforcing bar be should ensure that not less than 15mm, rearmounted reinforcing bar is not less than 15mm with recess sidewall spacing.It is adjacent
The long side wall laminating of two pieces of precast rc slabs, in binding face plate side piece 1-2, polylith prefabricated reinforced concrete are formed
The upper surface of plate forms a big upper surface, so as to pour overlapping layer concrete on the big upper surface.
Present embodiment glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab is by prefabricated unidirectional
Armoured concrete slab and the cast-in-place concrete overlapping layers composition for covering thereon, arrange in precast rc slab bottom and laterally pass through
Logical inverted groove, after overlapping layer concrete reaches some strength, lays rearmounted transverse steel in inverted groove, and recessed
The tensioning of groove two ends and the rearmounted reinforcing bar is anchored, before superimposed sheet bears external load, the reinforcing bar just can actively play tension effect,
Now reinforcing bar tension is bigger, and this method with the assembled prefabricated one-way slabs of post-tensioned prestressing can realize that the two-way of superimposed sheet is received
Power.The laying of the rearmounted transverse steel in prefabricated board bottom and prestressed applying are convenient, easily realize the bidirectional stress of superimposed sheet；
Pre-tensile stress size suffered by rearmounted transverse steel determines that pre- tensioning can make reinforcing bar drawing-resistant function by calculating according to concrete engineering
Tend to or can give full play to.Compared with conventional superimposed sheet, the bidirectional stress of the two-way superimposed sheet of the armored concrete is realized simply,
Its bidirectional stress property and prestressed advantageous effect can preferably embody superimposed sheet in stress performance, construction and economic benefit
Etc. aspect superiority.
Specific embodiment two：Present embodiment is anchored into building block from rearmounted reinforcing bar 2 unlike specific embodiment one
In rear pouring concrete between body of wall and rear pouring concrete overlapping layers 4.
Specific embodiment three：Present embodiment and rearmounted reinforcing bar 2 unlike specific embodiment one or two and inversion
The spacing of the side wall of groove 3 is 15～20mm.
Specific embodiment four：Precast slab unlike one of present embodiment and specific embodiment one to three
1 width is 400～900mm, and the span of precast slab 1 is 2.4m～9.0m.
The span of present embodiment precast slab is generally the multiple of 300mm.
Specific embodiment five：Precast reinforced coagulation unlike one of present embodiment and specific embodiment one to four
Reinforcement 1-1 in native plate 1 is axially axially mutually perpendicular to the rearmounted reinforcing bar 2 in inverted groove 3.
Present embodiment precast rc slab groove (referring to rearmounted reinforcing bar) is located under longitudinal reinforcement (such as Fig. 6 institutes
Show), do not interspace therebetween.
Specific embodiment six：Precast reinforced coagulation unlike one of present embodiment and specific embodiment one to five
The thickness of native plate 1 is 50～80mm.
Specific embodiment seven：In rear pouring concrete unlike one of present embodiment and specific embodiment one to six
Reinforcing bar is provided with overlapping layers 4.
The strength grade of concrete of present embodiment overlapping layers not preferably less than C25.
Specific embodiment eight：Present embodiment from unlike specific embodiment seven after in pouring concrete overlapping layers 4
Reinforcing bar be steel bar stress or distributing bar, wherein a diameter of 6～12mm of steel bar stress, distributing bar a diameter of 4～
8mm。
Reinforcing bar can adopt cold rolled reinforcing steel bar with ribs, hot rolled ribbed bars in present embodiment overlapping layers, and hot calendering may also be employed
Round bar, steel bar stress diameter is no less than 6mm, and distributing bar diameter is no less than 4mm.According to bidirectional laminated slab at bearing
Loading characteristic, certain steel bar stress or distributing bar need to be configured on overlapping concrete layer top.
Specific embodiment nine：Precast reinforced coagulation unlike one of present embodiment and specific embodiment one to eight
The longitudinal reinforcement 1-1 centers of the end of native plate 1 are equal to adjacent two longitudinal directions and receive to the distance of the side of precast slab 1 with its neighbour
The half of distance between power reinforcing bar 1-1 centers.
Specific embodiment ten：Reinforcement unlike one of present embodiment and specific embodiment one to nine
1-1 extends ejecting plate end, and the reinforcing bar for being stretched out is anchored in the rear pouring concrete between blockwork and overlapping layers 4.
Specific embodiment 11：It is precast reinforced mixed unlike one of present embodiment and specific embodiment one to ten
The surface of concrete board 1 is rough surface.
Present embodiment ensures that the superposed surfaces between new-old concrete have enough resistant slide abilities by rough surface,
Prefabricated plate surface has matsurface of the concavo-convex difference not less than 4mm.
Specific embodiment 12：Present embodiment from unlike specific embodiment one to one of 11 in rearmounted steel
The two ends of muscle 2 are provided with nut 6, and between the outer plate surface and nut 6 of precast slab 1 anchor plate 5 is provided with.
Present embodiment needed for the two ends of rearmounted reinforcing bar to put screw thread before rearmounted reinforcing bar is laid.In concrete
Rearmounted reinforcing bar is laid in the inverted groove of native plate bottom, while arranging anchor plate at the two ends of insertion inverted groove.Anchor plate is provided with
Circular opening, hole diameter is slightly larger than rearmounted bar diameter, the rearmounted reinforcing bar of screw thread will be cased with through anchor plate, by tightening silk
The nut buckled compresses anchor plate and applies pre-tensile stress to rearmounted reinforcing bar, and pre-tensile stress size is determined by the degree of tightening of nut.
When the cubic compressive strength of pouring concrete reaches more than the 75% of the characteristic value of cubic concrete compressive strength of design after,
Tensioning and rearmounted reinforcing bar can be anchored, so as to realize the two-way cloth muscle at superimposed sheet plate bottom.Rearmounted reinforcing bar along straight line lay, tensioning and
Anchoring structure is simple, and the 10% of the desirable control stress for prestressing of loss of prestress of reinforcing bar.
Embodiment：The present embodiment glomeration Building assembling formula post-tensioned prestressed concrete bidirectional laminated slab includes that polylith is prefabricated mixed
Concrete board 1, rear pouring concrete overlapping layers 4 and Duo Gen reinforcing bars, wherein precast slab 1 are one-way slabs, precast slab
Length × wide=3900mm × 600mm, its thickness is 60mm, and the span direction along precast rc slab 1 is arranged in plate body
Many Reinforcement 1-1 arranged in parallel, Reinforcement 1-1 extend ejecting plate end, along precast rc slab 1
Plate width direction is provided with the inverted groove 3 of multiple insertions, span direction uniform cloth of the multiple inverted grooves 3 along plate in plate bottom
Put, polylith precast slab 1 is spliced into monolithic concrete plate, the size of monolithic concrete plate is 3900mm × 6000mm, phase
The inverted groove 3 of adjacent precast rc slab 1 aligns insertion along plate width direction, after being laid with insertion in the inverted groove 3
Reinforcing bar 2 is put, the pouring concrete overlapping layers 4 after the surface casting concrete of polylith precast rc slab is formed pours mixed after
Reinforcing bar is provided with solidifying soil overlapping layers 4, after overlapping layer concrete reaches some strength, is laid in the inverted groove 3 of insertion
And the rearmounted reinforcing bar 2 of tensioning, make the assembled integral armoured concrete slab of polylith precast rc slab 1.
The strength grade of concrete of the present embodiment precast rc slab be C40, the coagulation of rear pouring concrete overlapping layers
Native strength grade is C30.Rearmounted reinforcing bar can select regular reinforcement, and the rearmounted reinforcing bar two ends in inverted groove are put into screw thread, lead to
Cross the nut tightened on screw thread and compress anchor plate to rearmounted reinforcing bar applying pre-tensile stress.Complete prefabricated using post-tensioned pre-stressed technology
The assembly of one-way slabs, the superimposed sheet after assembly has two-way stress function, and compared with longitudinal reinforcement in prefabricated panel, tensioning is simultaneously complete
Rearmounted reinforcing bar into anchoring plays earlier tension effect.
Applied using the glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab described in the present embodiment
The method of work follow these steps to realize：
First, according to the bearing capacity and crack-controlling criterion of construction stage precast rc slab, install at regular intervals
Plate bottom supports；
2nd, hoisting prefabricated reinforced concrete slab；
3rd, the steel bar stress and distributing bar in the top colligation overlapping layers of precast rc slab top surface；
4th, overlapping layer concrete is poured；
5th, overlap layer concrete to reach after some strength, lay the rearmounted reinforcing bar of simultaneously tensioning precast slab bottom；
6th, the bottom for removing precast rc slab supports；
7th, fill the space in the inverted groove of precast rc slab bottom with mortar, make inverted groove bottom surface with it is pre-
Making sheet bottom surface flushes.
Claims (10)
1. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab, it is characterised in that the glomeration Building assembling formula
Post-tensioned prestressed reinforcement concrete bidirectional laminated slab includes polylith precast rc slab (1), rear pouring concrete overlapping layers (4)
With many reinforcing bars, wherein precast rc slab (1) is one-way slabs, and the span direction along precast rc slab (1) exists
Many Reinforcements (1-1) arranged in parallel of arrangement in plate, Reinforcement (1-1) extends ejecting plate end, along pre-manufactured steel
The plate width direction of reinforced concrete plate (1) is provided with the inverted groove (3) of multiple insertions, multiple inverted groove (3) edges in plate bottom
The span direction of plate is evenly arranged, and the inverted groove (3) of contiguous prefabricated concrete slab (1) is falling along plate width direction alignment insertion
The rearmounted reinforcing bar (2) that insertion is laid with groove (3) is put, is formed in the surface casting concrete of polylith precast rc slab
Pouring concrete overlapping layers (4) afterwards, polylith precast rc slab (1) is by rear pouring concrete overlapping layers (4) and rearmounted reinforcing bar
(2) it is spliced into integral reinforced concrete plate.
2. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
It is that rearmounted reinforcing bar (2) is anchored in the rear pouring concrete between blockwork and rear pouring concrete overlapping layers (4).
3. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
The width for being precast slab (1) is 400～900mm, and the span of precast slab (1) is 2.4m～9.0m.
4. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
It is rearmounted reinforcing bar (2) of the Reinforcement (1-1) in precast rc slab (1) axially and in inverted groove (3)
Axially it is mutually perpendicular to.
5. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
The thickness for being precast rc slab (1) is 50～80mm.
6. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
It is to be provided with reinforcing bar in rear pouring concrete overlapping layers (4).
7. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 6, its feature
Be reinforcing bar in rear pouring concrete overlapping layers (4) be steel bar stress or distributing bar, wherein a diameter of the 6 of steel bar stress～
12mm, a diameter of 4～8mm of distributing bar.
8. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
It is longitudinal reinforcement (1-1) center of precast rc slab (1) end to precast slab (1) side with its neighbour
Distance be equal to adjacent two Reinforcement (1-1) center between distance half.
9. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
The surface for being precast rc slab (1) is rough surface.
10. glomeration Building assembling formula post-tensioned prestressed reinforcement concrete bidirectional laminated slab according to claim 1, its feature
It is to be provided with nut (6) at the two ends of rearmounted reinforcing bar (2), arranges between the outer plate surface and nut (6) of precast slab (1)
There is anchor plate (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710093705.6A CN106639094A (en) | 2017-02-21 | 2017-02-21 | Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building |
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| CN201710093705.6A CN106639094A (en) | 2017-02-21 | 2017-02-21 | Assembling type post-tensioned pre-stressing steel reinforced concrete bidirectional laminated board for aggregate building |
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| CN109440991A (en) * | 2018-12-19 | 2019-03-08 | 哈尔滨达城绿色建筑技术开发股份有限公司 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
| CN109610708A (en) * | 2019-01-15 | 2019-04-12 | 浙江大学建筑设计研究院有限公司 | A kind of the bidirectional laminated slab bottom plate and construction method of close piece connection |
| CN109629729A (en) * | 2018-12-19 | 2019-04-16 | 哈尔滨达城绿色建筑技术开发股份有限公司 | A kind of glomeration building unidirectional precast hollow slab superposed floor in gradual change section |
| CN109723176A (en) * | 2018-12-19 | 2019-05-07 | 济南大学 | The large-span prestressed more piece truss bars superimposed sheets of one kind and construction method |
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| CN112942659A (en) * | 2021-03-31 | 2021-06-11 | 福州大学 | Recycled concrete laminated slab containing prestressed FRP tendon fiber and manufacturing method thereof |
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| CN109440991A (en) * | 2018-12-19 | 2019-03-08 | 哈尔滨达城绿色建筑技术开发股份有限公司 | A kind of glomeration building superimposed sheet unidirectional precast hollow slab in gradual change section |
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| CN111576707A (en) * | 2020-06-29 | 2020-08-25 | 江苏万融工程科技有限公司 | Prefabricated superimposed sheet |
| CN113001751A (en) * | 2021-03-04 | 2021-06-22 | 青岛腾远设计事务所有限公司 | Spherical precast concrete superimposed sheet manufacturing method and mold and spherical precast concrete superimposed sheet |
| CN112942659A (en) * | 2021-03-31 | 2021-06-11 | 福州大学 | Recycled concrete laminated slab containing prestressed FRP tendon fiber and manufacturing method thereof |
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Application publication date: 20170510 |