CN105275091A - Prefabricated slab and prefabricated beam connection node and construction method thereof - Google Patents
Prefabricated slab and prefabricated beam connection node and construction method thereof Download PDFInfo
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- CN105275091A CN105275091A CN201510593291.4A CN201510593291A CN105275091A CN 105275091 A CN105275091 A CN 105275091A CN 201510593291 A CN201510593291 A CN 201510593291A CN 105275091 A CN105275091 A CN 105275091A
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Abstract
The invention provides a prefabricated slab and prefabricated beam connection node, which comprises a prefabricated slab and a prefabricated beam connected with the prefabricated slab. A connector is arranged at the place where the prefabricated slab and the prefabricated beam are connected. The connector comprises a reinforcing steel frame. The prefabricated slab, the prefabricated beam and the connector between the two are cast into a whole through the cast-in-situ concrete. At the place where the prefabricated slab and the prefabricated beam are connected, the connection node with the above structure is adopted, the reinforcing steels are made into a reinforcing steel frame, the connection place of the prefabricated slab adopts small-sized cast-in-situ, a large amount of manual cost is consumed if in-situ making is adopted, the prefabricated frame can be made mechanically in batch in a workshop, the size of the frame can be ensured to be consistent with the designed size, the making cost is greatly reduced, and after the cast-in-situ concrete is cast, integrity and anti-seismic performance of the place where the prefabricated slab and the prefabricated beam are connected are greatly improved, a situation in which the middle part is broken does not happen under effects of earthquake disasters, and the integrity and the safety performance of the building is improved.
Description
Technical field
The present invention relates to a kind of assembled architecture component, particularly the connected node of a kind of precast plate and precast beam and construction method thereof.
Background technology
In assembled architecture, its floor and the component such as wallboard, precast beam are typically employed in prefabrication, then at the construction field (site) the connected node between prefabricated units are formed overall structure by poured in place concrete.As with the connected node between precast beam and floor, general way is, cast-in-situ concrete between precast beam and precast floor slab, by concrete, precast beam and precast floor slab are linked to be entirety, the precast beam of this structure and the connected node of precast floor slab, efficiency of construction is high, but globality is poor, and it is not firm that cast-in-situ concrete is connected with between precast beam, precast floor slab.
Summary of the invention
First technical problem that the present invention will solve is: the connected node providing a kind of precast plate and precast beam, and it can improve the globality of building structure greatly.
Second technical problem that the present invention will solve is: the construction method providing a kind of split precast plate and precast beam, and it can improve the globality of building structure greatly.
The solution of first technical problem of the present invention is achieved in that the connected node of a kind of precast plate and precast beam, the precast beam comprising precast plate and be connected with precast plate, the junction of described precast plate and precast beam is provided with connector, described connector comprises cage of reinforcement, and described precast plate, precast beam and connector between the two form one by cast-in-situ concrete.So, adopt the connected node of said structure at precast plate and precast beam mosaic, add cage of reinforcement at precast plate and precast beam mosaic, and precast plate and precast beam mosaic are that small size is cast-in-place, therefore situ wet operation is considerably less; In addition, cage of reinforcement as adopted field fabrication then at substantial cost of labor, and adopts precast framework, then at room machine batch making, can be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, improve efficiency of construction; After cast-in-situ concrete, under the acting in conjunction of cage of reinforcement and cast-in-situ concrete, globality and the anti-seismic performance of precast plate and precast beam mosaic can be increased substantially, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, described cage of reinforcement comprises longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar, transverse reinforcement is connecting reinforcement, described elongated reinforcing bar and connecting reinforcement are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement is provided with turnover.So, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, and on connecting reinforcement, be provided with turnover, after building cast-in-situ concrete, by elongated reinforcing bar and connecting reinforcement, contiguous prefabricated plate is connected to form integral rigidity plate, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described elongated reinforcing bar and connecting reinforcement are by being welded to connect into cage of reinforcement.So, when elongated reinforcing bar with connecting reinforcement by being welded to connect into cage of reinforcement time, the production efficiency of cage of reinforcement is high, can realize automatic production line and produce, significantly can reduce cost of labor, and secure and reliable connection, be conducive to large-scale promotion application.
Another technical scheme of the present invention is on above-mentioned basis, and described elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation.So, when elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation, in application process, local reinforcement location can be adjusted flexibly, so that arrange other pipelines or lose pre-buried, facilitate construction operation.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement end is provided with linkage.So, connecting reinforcement end is provided with linkage, when described cage of reinforcement is applied to precast plate mosaic, the linkage of connecting reinforcement end can be connected to each other with the reserved reinforcing bar exposed in precast plate, afterwards after concreting, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described linkage is the screw thread being arranged at connecting reinforcement end.So, when linkage is the screw thread being arranged at connecting reinforcement end, during described cage of reinforcement application, can be inserted in hole reserved on precast plate by arranging threaded end, after concreting, can connecting reinforcement be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is or/and the end of elongated reinforcing bar is provided with pier nose.So, when connecting reinforcement or/and the end of elongated reinforcing bar is provided with pier nose, during described cage of reinforcement application, the end being provided with pier nose can be inserted in hole reserved on precast plate, or by pier nose by lockset by the bar connecting exposed pre-buried on precast plate, after concreting, can by elongated reinforcing bar or/and connecting reinforcement be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement two ends arrange bending section.So, connecting reinforcement two ends arrange bending section, and when described cage of reinforcement is applied to the split position of precast plate, after building cast-in-situ concrete, bending end can form good anchoring.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is intersect after bending to form.So, connecting reinforcement is intersect after bending to form, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand its with concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
Another technical scheme of the present invention is on above-mentioned basis, and the bending angle scope of described connecting reinforcement is 20 °-60 °.So, connecting reinforcement is intersect after bending to form, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand its with concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
Another technical scheme of the present invention is on above-mentioned basis, and described connecting reinforcement is or/and elongated reinforcing bar is indented bars is made.So, adopt indented bars to make skeleton, indented bars has good anchoring property, can improve the antidetonation of precast plate mosaic cast-in-place concrete structure, fracture resistance.
Another technical scheme of the present invention is on above-mentioned basis, and described precast plate is hollow pre-fabricated panels or prestressing force precast plate.So, adopt hollow pre-fabricated panels can reduce the weight of floor, save material, meanwhile, the sound isolating and heat insulating performance of floor can be increased substantially, and adopt prestressing force precast plate, then can improve non-deformability and the weight bearing power of floor.
Another technical scheme of the present invention is on above-mentioned basis, the link of described precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, reinforcing bar is had or/and steel strand and precast beam are arranged in intersecting vertically in precast plate, and reinforcing bar is or/and steel strand expose and stretch in cast-in-situ concrete die cavity, cast-in-situ concrete is built and is formed the superimposed connecting overall of T-shaped between precast plate and precast beam.So, by cast-in-place T-shaped structure, precast plate and precast beam are connected into overall structure, and have reinforcing bar in precast plate or/and steel strand and precast beam are arranged in intersecting vertically, and reinforcing bar is or/and steel strand expose and stretch in cast-in-situ concrete die cavity, can jointly form overall force structure by the cast-in-situ concrete of choosing outside step platform lower in part.Be that vertical plane arranges groove further as chosen portion end surface outside step platform lower, after then building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, the upper corner of section lower corner near precast beam is chosen outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity.So, outside step platform lower, choose the upper corner of section lower corner near precast beam, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction.
Another technical scheme of the present invention is on above-mentioned basis, and have reinforcing bar in described precast plate or/and steel strand expose and stretch into after in cast-in-situ concrete die cavity, connected by linkage, described linkage is compression sleeve.So, reinforcing bar is had or/and steel strand expose and stretch into after in cast-in-situ concrete die cavity in precast plate, connected by linkage, after building cast-in-situ concrete, precast plate, precast beam engage with cast-in-place concrete structure and form overall load-carrying construction component, have increased substantially integral rigidity and the anti-seismic performance of floor, make that each independently precast plate, precast beam become overall load-carrying construction, and linkage is compression sleeve, then reduce bar connecting difficulty, can efficiency of construction be increased substantially.
Another technical scheme of the present invention is on above-mentioned basis, has embedded bar to expose and jointly build in cast-in-situ concrete with cage of reinforcement in described precast beam.So, have embedded bar to expose in precast beam jointly to build after in cast-in-situ concrete with cage of reinforcement, prefabricated structural element and cast-in-place structural form entirety, make each independently precast plate, precast beam become overall load-carrying construction, have increased substantially integral rigidity and the anti-seismic performance of floor.
Another technical scheme of the present invention is on above-mentioned basis, and the link of described precast plate is provided with V-type notch or double V-groove.So, the link of precast plate is provided with V-type notch or double V-groove, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in V-type notch or double V-groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, the link of described precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, have reinforcing bar in precast plate or/and steel strand and precast beam are set in parallel, cast-in-situ concrete is built and is formed the superimposed connecting overall of T-shaped between precast plate and precast beam.So, by cast-in-place T-shaped structure, precast plate and precast beam are connected into overall structure, and have reinforcing bar in precast plate or/and steel strand and precast beam are set in parallel, can jointly form overall force structure by the cast-in-situ concrete of choosing outside step platform lower in part.Be that vertical plane arranges groove further as chosen portion end surface outside step platform lower, after then building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, the upper corner of section lower corner near precast beam is chosen outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity.So, outside step platform lower, choose the upper corner of section lower corner near precast beam, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction.
Another technical scheme of the present invention is on above-mentioned basis, has embedded bar to expose and jointly build in cast-in-situ concrete with cage of reinforcement in described precast beam.So, have embedded bar to expose in precast beam jointly to build after in cast-in-situ concrete with cage of reinforcement, prefabricated structural element and cast-in-place structural form entirety, make each independently precast plate, precast beam become overall load-carrying construction, have increased substantially integral rigidity and the anti-seismic performance of floor.
Another technical scheme of the present invention is on above-mentioned basis, and the embedded bar exposed in described precast beam is stirrup.So, when the embedded bar exposed at precast beam top is stirrup, the elongated reinforced binding that stirrup can will be placed in one, after cast-in-situ concrete, form cast-in-situ concrete spandrel girder at the top of precast beam, reduce the load pressure of precast beam, improve the overall performance of cast-in-place concrete structure.
Another technical scheme of the present invention is on above-mentioned basis, and described stirrup is open stirrup.So, when stirrup is open stirrup, elongated reinforcing bar can be inserted from stirrup top very easily, and does not need to wear from the end of precast beam, is very easy to construction, reduces difficulty of construction.
Another technical scheme of the present invention is on above-mentioned basis, and the dowel in described cage of reinforcement is horizontal L shape reinforcing bar, the elongated bar splicing in described L shape reinforcing bar and open stirrup or fixing after overlapping.So, by the setting of horizontal L shape dowel, after building cast-in-situ concrete, precast beam and precast plate connect in order to entirety by cast-in-place concrete structure, and the precast plate being and precast beam form load-carrying member that can be jointly stressed, as the end at precast plate is also provided with groove, then in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, and described precast beam is exterior wall, and the side of body of wall is provided with precast plate, and its opposite side is provided with exempts from hold mode, exempts from hold mode and precast plate, body of wall top form cast-in-situ concrete die cavity jointly.So, the side of body of wall is provided with precast plate, its opposite side is provided with exempts from hold mode, exempt from hold mode and precast plate, body of wall top when jointly forming cast-in-situ concrete die cavity, after having built concrete, do not need stripping, can construct further, decrease plank and install operation, simplify construction technology, reduce construction cost and material cost.
Another technical scheme of the present invention is on above-mentioned basis, described in exempt from hold mode and comprise stencil body, at least one side of described stencil body is provided with flanging, described in exempt from hold mode and be fixed on cage of reinforcement.So, precast plate and precast beam mosaic adopt the connected node of said structure, wherein have employed integrated connector, after the side of its stencil body is provided with flanging, exempt from hold mode application process described, flanging can close with precast plate and precast beam body close contact, the plate face formed after flanging can contact with the surperficial forming surface of precast plate, effectively can prevent its spillage in casting process, if flanging to be converted into and stencil body is angle between 90 ° to 135 °, then can expand bonding tightness further, simultaneously, the plate face formed after its flanging can be shelved on the split face of precast plate and precast beam body, under the effect of working load, hold mode and precast plate and precast beam body will be exempted from and compress mortar leakage prevention.
Another technical scheme of the present invention is on above-mentioned basis, and described stencil body is steel plate, and described flanging is elastic telescopic face.So, stencil body is steel plate, when described flanging is elastic telescopic face, flanging has extendable room, described hold mode of exempting from is applied in the split process of precast plate and precast beam, can make up to arrange range error between precast plate, can prevent the split of precast plate from connecting spillage.
Another technical scheme of the present invention is on above-mentioned basis, and described stencil body is bamboo slab rubber, wood glue plate or plastic plate.So, when stencil body is above-mentioned material, have cost low, wide material sources, when particularly adopting plastic plate, it has good plasticity and decay resistance, is conducive to applying.
Another technical scheme of the present invention is on above-mentioned basis, and the both sides of described stencil body are provided with elastic telescopic face, and described elastic telescopic face is that steel plate edge is compressed into fold and forms.So, the both sides of template are provided with elastic telescopic face, described elastic telescopic face is that steel plate edge is compressed into fold when forming, template processing technology is simple, flanging has extendable room, described hold mode of exempting from is applied in the split process of precast plate and precast beam, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage, and after application, template bottom also has corresponding fold accordingly, and what increased substantially its underpart whitewashes coating bonding surface, can prevent rendering layer from coming off; In addition, the existence of bleeding aperture, can also prevent the hollowing that the cast-in-place position of Nodes is formed due to air, reduces potential safety hazard.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with bleeding aperture.So, stencil body is provided with bleeding aperture, described hold mode of exempting from is applied in the split process of precast plate, after Cast-in-place concrete pours into, a small amount of slurry can be secreted from bleeding aperture, thus the soffit at split position forms matsurface, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off; In addition, the existence of bleeding aperture, can also prevent the hollowing that the cast-in-place position of Nodes is formed due to air, reduces potential safety hazard.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with reinforcing bar fixture.So; stencil body is provided with reinforcing bar fixture; described hold mode of exempting from is in the split process being applied to precast plate; the reinforcing bar at split position can by reinforcing bar fixture with exempt from hold mode and be connected; fully can ensure the cast-in-situ concrete protective layer thickness of reinforcing bar; meanwhile, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
Another technical scheme of the present invention is on above-mentioned basis, described reinforcing bar fixture and stencil body one-body molded.So, when reinforcing bar fixture and stencil body one-body molded time, only need reinforcing bar fixture to be made by punching press, considerably reduce manufacture difficulty and the cost of reinforcing bar fixture.
Another technical scheme of the present invention is on above-mentioned basis, and described reinforcing bar fixture is working of plastics.So, when adopting working of plastics as reinforcing bar fixture, reinforcing bar permanent position is adjustable, and reinforcing bar fixture reduces costs by batch making.
Another technical scheme of the present invention is on above-mentioned basis, and described working of plastics one end is the embedding mouth of reinforcing bar, is sold back to a grain-producing area till the other end.So, when working of plastics one end is the embedding mouth of reinforcing bar, be sold back to a grain-producing area till the other end, during described reinforcing bar fixture application, reinforcing bar can be snapped in reinforcing bar embedding mouth internal fixtion reinforcing bar, non-return pin inserts non-return in the hole that template is offered and fixes, construction technology is simple, reduces difficulty of construction.
Another technical scheme of the present invention is on above-mentioned basis, and described reinforcing bar fixture is reinforcing bar locating slot.So, stencil body is provided with reinforcing bar locating slot, described hold mode of exempting from is in the split process being applied to precast plate, the reinforcing bar at split position can by reinforcing bar locating slot with exempt from hold mode and be connected, reinforcing bar can be prevented to be shifted, convenient fixing to be installed, simultaneously, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
Another technical scheme of the present invention is, on above-mentioned basis, described stencil body to be provided with fin.So; after stencil body is provided with fin; the rigidity of template itself is greatly improved; the thickness of template can be reduced, meanwhile, can also template deformation be prevented; in addition; if fin horizontally set, can also use as steel bar spacer, can fully ensure concrete cover to reinforcement thickness.
Another technical scheme of the present invention is on above-mentioned basis, described fin and stencil body one-body molded, or described fin and stencil body divide body formed and described fin to be fixed on stencil body.So, when fin and stencil body one-body molded time, as adopt steel plate make template, then can be compressing by steel plate, manufacture craft is convenient and simple,
Another technical scheme of the present invention is, on above-mentioned basis, described fin to be provided with reinforcing bar locating slot.So, after fin is provided with reinforcing bar locating slot, in application process, reinforcing bar is placed in reinforcing bar locating slot, reinforcing bar can be prevented to be shifted, if arrange restraint device at reinforcing bar detent notch, then reinforcing bar firmly can be fixed in reinforcing bar detent, prevent reinforcing bar from moving further, effectively can ensure that the interior mechanics performance of cast-in-place structural is coincide with design.
The solution of second technical problem of the present invention is achieved in that the construction method of a kind of split precast plate and precast beam, be provided with the connected node of precast plate described in above-mentioned any one and precast beam in the mosaic of described precast plate and precast beam, comprise the following steps
(1) precast plate is laid on precast beam;
(2) in the mosaic of precast plate and precast beam, cage of reinforcement is laid;
(3) in the mosaic of precast plate and precast beam, concreting;
(4) namely maintenance obtains split precast plate and precast beam.
So, pass through above-mentioned steps, a kind of split precast plate and precast beam can be obtained, it has good two-way stiffness, because it is provided with cage of reinforcement with the mosaic of precast beam and cast-in-situ concrete is connected at split precast plate, increases substantially globality and the anti-seismic performance of split precast plate and precast beam, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
Another technical scheme of the present invention is on above-mentioned basis, in described (2) step, the embedded bar exposed in described precast beam is open stirrup, dowel in described cage of reinforcement is horizontal L shape reinforcing bar, first elongated reinforcing bar is inserted in open stirrup, fix after overlap joint or overlap joint.So, when adopting abovementioned steps, by the setting of horizontal L shape dowel, after building cast-in-situ concrete, precast beam and precast plate connect in order to entirety by cast-in-place concrete structure, the precast plate being and precast beam form load-carrying member that can be jointly stressed, as the end at precast plate is also provided with groove, then in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
Another technical scheme of the present invention is on above-mentioned basis, in described (2) step, first the side of precast beam is provided with precast plate, then arranges at its opposite side and exempt from hold mode, exempt from hold mode and precast plate, precast beam top form cast-in-situ concrete die cavity jointly.So, when adopting abovementioned steps, the side of precast beam is provided with precast plate, and its opposite side is provided with exempts from hold mode, exempts from hold mode and precast plate, precast beam top when jointly forming cast-in-situ concrete die cavity, after having built concrete, do not need stripping, can construct further, decrease plank and install operation, simplify construction technology, reduce construction cost and material cost.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is for representing the drawing of the connected node of precast plate involved by this patent a kind of embodiment and precast beam;
Fig. 2 and Fig. 3 is for representing the drawing of the connected node of precast plate involved by this patent another two kinds of embodiments and precast beam;
Fig. 4 for represent precast plate involved by this patent a kind of embodiment and precast beam connected node in the structural representation of connector.
In figure:
1 stencil body 2 flanging 3 bleeding aperture 4 reinforcing bar fixture
21 elongated reinforcing bar 22 connecting reinforcement 110 precast plate 120 precast beams
Detailed description of the invention
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.In addition, those skilled in the art, according to the description of presents, can carry out respective combination to the feature in embodiment in presents and in different embodiment.
The embodiment of the present invention is as follows, refer to shown in Fig. 1 to Fig. 3, the connected node of a kind of precast plate and precast beam, the precast beam 120 comprising precast plate 110 and be connected with precast plate 110, the junction of described precast plate 110 and precast beam 120 is provided with connector, described connector comprises cage of reinforcement, and described precast plate 110, precast beam 120 and connector between the two form one by cast-in-situ concrete.Described precast plate 110 can be distributed in the side of precast beam 120, also can all be provided with precast plate 110 in the both sides of precast beam 120.So, the connected node of said structure is adopted at precast plate and precast beam mosaic, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, after building cast-in-situ concrete, increase substantially globality and the anti-seismic performance of precast plate and precast beam mosaic, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 1 to 4, described cage of reinforcement can comprise longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar 21, transverse reinforcement is connecting reinforcement 22, and described elongated reinforcing bar 21 and connecting reinforcement 22 are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement 22 is provided with turnover.So, reinforcement fabrication is become cage of reinforcement, because precast plate mosaic is that small size is cast-in-place, as adopted field fabrication then at substantial cost of labor, and adopt precast framework, then can at room machine batch making, be conducive to ensureing that skeleton conforms to design size, significantly can reduce cost of manufacture simultaneously, and on connecting reinforcement 22, be provided with turnover, after building cast-in-situ concrete, by elongated reinforcing bar 21 and connecting reinforcement 22, contiguous prefabricated plate is connected to form integral rigidity plate, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.Preferably, described connecting reinforcement 22 can be many, and is uniformly distributed, and arranges in length and breadth with elongated reinforcing bar 21 and fixedly becomes cage of reinforcement.
On the basis of above-described embodiment, in another embodiment of the present invention, described elongated reinforcing bar 21 can by being welded to connect into cage of reinforcement with connecting reinforcement 22.So, when elongated reinforcing bar 21 with connecting reinforcement 22 by being welded to connect into cage of reinforcement time, the production efficiency of cage of reinforcement is high, automatic production line can be realized produce, significantly can reduce cost of labor, and secure and reliable connection, be conducive to large-scale promotion application.
On the basis of above-described embodiment, in another embodiment of the present invention, described elongated reinforcing bar 21 and connecting reinforcement 22 also can connect into cage of reinforcement by colligation.So, when elongated reinforcing bar 21 and connecting reinforcement 22 connect into cage of reinforcement by colligation, in application process, local reinforcement location can be adjusted flexibly, so that arrange other pipelines or lose pre-buried, facilitate construction operation.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 end can be provided with linkage.So, connecting reinforcement 22 end is provided with linkage, when described cage of reinforcement is applied to precast plate mosaic, the linkage of connecting reinforcement 22 end can be connected to each other with the reserved reinforcing bar exposed in precast plate, afterwards after concreting, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described linkage can for being arranged at the screw thread of connecting reinforcement 22 end.So, when linkage is the screw thread being arranged at connecting reinforcement 22 end, during described cage of reinforcement application, can be inserted in hole reserved on precast plate by arranging threaded end, after concreting, can connecting reinforcement 22 be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 is or/and the end of elongated reinforcing bar 21 also can be provided with pier nose.So, when connecting reinforcement 22 or/and the end of elongated reinforcing bar 21 is provided with pier nose, during described cage of reinforcement application, the end being provided with pier nose can be inserted in hole reserved on precast plate, or by pier nose by lockset by the bar connecting exposed pre-buried on precast plate, after concreting, can by elongated reinforcing bar 21 or/and connecting reinforcement 22 be anchored in precast plate, and then, contiguous prefabricated plate is connected to form integral rigidity plate by the cage of reinforcement of junction and cast-in-situ concrete, increase substantially globality and the anti-seismic performance of prefabricated split floor, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 two ends can also arrange bending section.So, connecting reinforcement 22 two ends arrange bending section, and when described cage of reinforcement is applied to the split position of precast plate, after building cast-in-situ concrete, bending end can form good anchoring.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described connecting reinforcement 22 can form for intersecting after bending.So, connecting reinforcement 22 forms for intersecting after the place's bending of middle part two, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand itself and concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
On the basis of above-described embodiment, in another embodiment of the present invention, the bending angle scope of described connecting reinforcement 22 can be 20 °-60 °.So, connecting reinforcement 22 forms for intersecting after bending, and described cage of reinforcement is applied to precast plate mosaic, after concreting, increase on the one hand itself and concrete contact area and with concrete adhesion, reach the effect of bonding strength enhancing; On the other hand, adopt interconnection muscle, effectively can regulate the bending angle of dowel, the minimizing of turning angle effectively can ensure that dowel has enough anchorage lengths, and test shows, the turning angle of staggered form dowel is less, and the overall performance of plate is stronger.
On the basis of above-described embodiment, in another embodiment of the present invention, described connecting reinforcement 22 is or/and elongated reinforcing bar 21 can be made for indented bars.So, adopt indented bars to make skeleton, indented bars has good anchoring property, can improve the antidetonation of precast plate mosaic cast-in-place concrete structure, fracture resistance.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described precast plate 110 can be hollow pre-fabricated panels or prestressing force precast plate.So, adopt hollow pre-fabricated panels can reduce the weight of floor, save material, meanwhile, the sound isolating and heat insulating performance of floor can be increased substantially, and adopt prestressing force precast plate, then can improve non-deformability and the weight bearing power of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 1, Figure 2 and Figure 3, the link of described precast plate 110 is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, reinforcing bar is had or/and steel strand and precast beam 120 are arranged in intersecting vertically in precast plate 110, and reinforcing bar is or/and steel strand expose and stretch in cast-in-situ concrete die cavity, cast-in-situ concrete is built and is formed the superimposed connecting overall of T-shaped between precast plate 110 and precast beam 120.So, by cast-in-place T-shaped structure, precast plate 110 and precast beam 120 are connected into overall structure, and have reinforcing bar in precast plate 110 or/and steel strand and precast beam 120 are arranged in intersecting vertically, and reinforcing bar is or/and steel strand expose and stretch in cast-in-situ concrete die cavity, overall force structure can be jointly formed by the cast-in-situ concrete of choosing outside step platform lower in part, the upper corner of section lower corner near precast beam 120 is chosen outside step platform lower, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction, be that vertical plane arranges groove further as chosen portion end surface outside step platform lower, after then building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate 110 destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate 110 ruptured from falling, improve the seismic seeurity of floor.In addition, preferably, the surface of the step platform of precast plate 110 is matsurface, and particularly the upper surface of step platform can also arrange anchor slot, strengthens the anchoring strength of new-old concrete on direction, plate face, strengthens the globality of floor further.
On the basis of above-described embodiment, in another embodiment of the present invention, vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, the upper corner of section lower corner near precast beam 120 is chosen outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity.So, outside step platform lower, choose the upper corner of section lower corner near precast beam, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figures 2 and 3, have reinforcing bar in described precast plate 110 or/and steel strand expose and stretch into after in cast-in-situ concrete die cavity, connected by linkage, described linkage is compression sleeve.Described reinforcing bar can be prestressed reinforcement.So, reinforcing bar is had or/and steel strand expose and stretch into after in cast-in-situ concrete die cavity in precast plate 110, connected by linkage, after building cast-in-situ concrete, precast plate 110, precast beam 120 engage with cast-in-place concrete structure and form overall load-carrying construction component, integral rigidity and the anti-seismic performance of floor are increased substantially, make that each independently precast plate 110, precast beam 120 become overall load-carrying construction, and linkage is compression sleeve, then reduce bar connecting difficulty, can efficiency of construction be increased substantially.
On the basis of above-described embodiment, in another embodiment of the present invention, there is embedded bar to expose in described precast beam 120 and jointly build in cast-in-situ concrete with cage of reinforcement.So, have embedded bar to expose in precast beam 120 jointly to build after in cast-in-situ concrete with cage of reinforcement, prefabricated structural element and cast-in-place structural form entirety, make each independently precast plate 110, precast beam 120 become overall load-carrying construction, increase substantially integral rigidity and the anti-seismic performance of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, the link of described precast plate 110 is provided with V-type notch or double V-groove.So, the link of precast plate 110 is provided with V-type notch or double V-groove, after building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in V-type notch or double V-groove, in earthquake disaster process, even if precast plate 110 destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate 110 ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 1, Figure 2 and Figure 3, the link of described precast plate 110 is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, has reinforcing bar or/and steel strand and precast beam 120 are set in parallel in precast plate 110, and cast-in-situ concrete is built and formed the superimposed connecting overall of T-shaped between precast plate 110 and precast beam 120.So, by cast-in-place T-shaped structure, precast plate 110 and precast beam 120 are connected into overall structure, and have reinforcing bar in precast plate 110 or/and steel strand and precast beam 120 are set in parallel, overall force structure can be jointly formed by the cast-in-situ concrete of choosing outside step platform lower in part, the upper corner of section lower corner near precast beam 120 is chosen outside step platform lower, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction, be that vertical plane arranges groove further as chosen portion end surface outside step platform lower, after then building cast-in-situ concrete, cast-in-situ concrete forms embedded structure in a groove, in earthquake disaster process, even if precast plate 110 destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate 110 ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, the upper corner of section lower corner near precast beam 120 is chosen outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity.So, outside step platform lower, choose the upper corner of section lower corner near precast beam, form cast-in-situ concrete die cavity, can not need that template is set in its junction and directly can build cast-in-situ concrete, be very easy to construction, reduce difficulty of construction, improve efficiency of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, there is embedded bar to expose in described precast beam 120 and jointly build in cast-in-situ concrete with cage of reinforcement.So, have embedded bar to expose in precast beam jointly to build after in cast-in-situ concrete with cage of reinforcement, prefabricated structural element and cast-in-place structural form entirety, make each independently precast plate, precast beam become overall load-carrying construction, have increased substantially integral rigidity and the anti-seismic performance of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, the embedded bar exposed in described precast beam 120 can be stirrup.So, when the embedded bar exposed at precast beam top is stirrup, the elongated reinforced binding that stirrup can will be placed in one, after cast-in-situ concrete, form cast-in-situ concrete spandrel girder at the top of precast beam, reduce the load pressure of precast beam, improve the overall performance of cast-in-place concrete structure.
On the basis of above-described embodiment, in another embodiment of the present invention, described stirrup can be open stirrup.So, when stirrup is open stirrup, elongated reinforcing bar can be inserted from stirrup top very easily, and does not need to wear from the end of precast beam, is very easy to construction, reduces difficulty of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, the dowel in described cage of reinforcement can be horizontal L shape reinforcing bar, the elongated bar splicing in described L shape reinforcing bar and open stirrup or fixing after overlapping.So, by the setting of horizontal L shape dowel, after building cast-in-situ concrete, precast beam and precast plate connect in order to entirety by cast-in-place concrete structure, and the precast plate being and precast beam form load-carrying member that can be jointly stressed, as the end at precast plate is also provided with groove, then in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, described precast beam is exterior wall, and the side of body of wall is provided with precast plate, and its opposite side is provided with exempts from hold mode, exempts from hold mode and precast plate, body of wall top form cast-in-situ concrete die cavity jointly.So, the side of body of wall is provided with precast plate, its opposite side is provided with exempts from hold mode, exempt from hold mode and precast plate, body of wall top when jointly forming cast-in-situ concrete die cavity, after having built concrete, do not need stripping, can construct further, decrease plank and install operation, simplify construction technology, reduce construction cost and material cost.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described in exempt from hold mode and comprise stencil body 1, at least one side of described stencil body 1 is provided with flanging 2, and described cage of reinforcement is fixed on exempts from hold mode.So, precast plate and precast beam mosaic adopt the connected node of said structure, wherein have employed integrated connector, after the side of its stencil body is provided with flanging, exempt from hold mode application process described, flanging can close with precast plate and precast beam body close contact, the plate face formed after flanging can contact with the surperficial forming surface of precast plate, effectively can prevent its spillage in casting process, if flanging to be converted into and stencil body is angle between 90 ° to 135 °, then can expand bonding tightness further, simultaneously, the plate face formed after its flanging can be shelved on the split face of precast plate and precast beam body, under the effect of working load, hold mode and precast plate and precast beam body will be exempted from and compress mortar leakage prevention.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described stencil body 1 can be steel plate, and described flanging 2 is elastic telescopic face.So, stencil body 1 is steel plate, when described flanging 2 is elastic telescopic face, flanging 2 has extendable room, described hold mode of exempting from is applied in the split process of precast plate and precast beam, can make up to arrange range error between precast plate, can prevent the split of precast plate from connecting spillage.
On the basis of above-described embodiment, in another embodiment of the present invention, described stencil body 1 is bamboo slab rubber, wood glue plate or plastic plate.So, when stencil body 1 is above-mentioned material, have cost low, wide material sources, when particularly adopting plastic plate, it has good plasticity and decay resistance, is conducive to applying.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, the both sides of described stencil body all can be provided with elastic telescopic face, and described elastic telescopic face is that steel plate edge is compressed into fold and forms.So, the both sides of template are provided with elastic telescopic face, described elastic telescopic face is that steel plate edge is compressed into fold when forming, template processing technology is simple, flanging 2 has extendable room, described hold mode of exempting from is applied in the split process of precast plate and precast beam, can make up and between precast plate, range error is set, can prevent the split of precast plate from connecting spillage, and after application, template bottom also has corresponding fold accordingly, and what increased substantially its underpart whitewashes coating bonding surface, can prevent rendering layer from coming off.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described stencil body 1 can be provided with bleeding aperture 3.So, stencil body 1 is provided with bleeding aperture 3, described hold mode of exempting from is applied in the split process of precast plate, after Cast-in-place concrete pours into, a small amount of slurry can be secreted from bleeding aperture 3, thus the soffit at split position forms matsurface, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off.In addition, described bleeding aperture 3 can arrange multiple, and is evenly distributed on described stencil body 1.Preferably, on described flanging 2, also can be provided with bleeding aperture 3, thus can form matsurface in the soffit entirety at split position, what increased substantially its underpart whitewashes coating binding force, can prevent rendering layer from coming off.In addition, described bleeding aperture 3 can be circular hole, semicircle orifice, square hole, star-shaped aperture or polygonal hole, can form bleeding aperture 3 by punching press direct on stencil body 1.
On the basis of above-described embodiment, in another embodiment of the present invention, as shown in Figure 4, described stencil body 1 can be provided with reinforcing bar fixture 4.So; stencil body 1 is provided with reinforcing bar fixture 4; described hold mode of exempting from is in the split process being applied to precast plate; the reinforcing bar at split position can by reinforcing bar fixture 4 with exempt from hold mode and be connected; fully can ensure the cast-in-situ concrete protective layer thickness of reinforcing bar; meanwhile, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can adopt one-body molded with stencil body 1.So, when reinforcing bar fixture 4 and stencil body 1 are one-body molded, only need reinforcing bar fixture 4 to be made by punching press, considerably reduce manufacture difficulty and the cost of reinforcing bar fixture 4.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can be working of plastics.So, when adopting working of plastics as reinforcing bar fixture 4, reinforcing bar permanent position is adjustable, and reinforcing bar fixture 4 reduces costs by batch making.
On the basis of above-described embodiment, in another embodiment of the present invention, described working of plastics one end can be the embedding mouth of reinforcing bar, is sold back to a grain-producing area till the other end.So, when working of plastics one end is the embedding mouth of reinforcing bar, be sold back to a grain-producing area till the other end, when described reinforcing bar fixture 4 is applied, reinforcing bar can be snapped in reinforcing bar embedding mouth internal fixtion reinforcing bar, non-return pin inserts non-return in the hole that template is offered and fixes, construction technology is simple, reduces difficulty of construction.
On the basis of above-described embodiment, in another embodiment of the present invention, described reinforcing bar fixture 4 can be reinforcing bar locating slot.So, stencil body 1 is provided with reinforcing bar locating slot, described hold mode of exempting from is in the split process being applied to precast plate, the reinforcing bar at split position can by reinforcing bar locating slot with exempt from hold mode and be connected, reinforcing bar can be prevented to be shifted, convenient fixing to be installed, simultaneously, also can by template firmly with bar connecting, prevent its template in the process of cast-in-situ concrete from falling because of the applying of working load.
On the basis of above-described embodiment, in another embodiment of the present invention, described stencil body 1 can also be provided with fin.So; after stencil body 1 is provided with fin; the rigidity of template itself is greatly improved; the thickness of template can be reduced, meanwhile, can also template deformation be prevented; in addition; if fin horizontally set, can also use as steel bar spacer, can fully ensure concrete cover to reinforcement thickness.
On the basis of above-described embodiment, in another embodiment of the present invention, described fin and stencil body 1 one-body molded, or described fin and the body formed and described fin of stencil body 1 point are fixed on stencil body 1.So, when fin and stencil body 1 one-body molded time, as adopt steel plate make template, then can be compressing by steel plate, manufacture craft is convenient and simple,
On the basis of above-described embodiment, in another embodiment of the present invention, described fin can also be provided with reinforcing bar locating slot.So, after fin is provided with reinforcing bar locating slot, in application process, reinforcing bar is placed in reinforcing bar locating slot, reinforcing bar can be prevented to be shifted, if arrange restraint device at reinforcing bar detent notch, then reinforcing bar firmly can be fixed in reinforcing bar detent, prevent reinforcing bar from moving further, effectively can ensure that the interior mechanics performance of cast-in-place structural is coincide with design.
On the basis of above-described embodiment, in another embodiment of the present invention, provide the construction method of a kind of split precast plate 110 and precast beam 120, be provided with the precast plate 110 described in above-mentioned any one and the connected node of precast beam 120 in described precast plate 110 and the mosaic of precast beam 120, comprise the following steps
(1) precast plate 110 is laid on precast beam 120;
(2) in the mosaic of precast plate 110 with precast beam 120, cage of reinforcement is laid;
(3) in the mosaic of precast plate 110 with precast beam 120, concreting;
(4) namely maintenance obtains split precast plate 110 and precast beam 120.
So, pass through above-mentioned steps, a kind of split precast plate 110 and precast beam 120 can be obtained, it has good two-way stiffness, because it is provided with cage of reinforcement with the mosaic of precast beam 120 and cast-in-situ concrete is connected at split precast plate 110, increase substantially globality and the anti-seismic performance of split precast plate 110 and precast beam 120, make it under the effect of earthquake disaster, the situation of middle part fracture can not be caused to occur, improve globality and the security performance of building.
On the basis of above-described embodiment, in another embodiment of the present invention, in described (2) step, the embedded bar exposed in described precast beam is open stirrup, dowel in described cage of reinforcement is horizontal L shape reinforcing bar, first elongated reinforcing bar is inserted in open stirrup, fix after overlap joint or overlap joint.So, when adopting abovementioned steps, by the setting of horizontal L shape dowel, after building cast-in-situ concrete, precast beam and precast plate connect in order to entirety by cast-in-place concrete structure, the precast plate being and precast beam form load-carrying member that can be jointly stressed, as the end at precast plate is also provided with groove, then in earthquake disaster process, even if precast plate destroys fracture, because of the existence of embedded structure, effectively can prevent the precast plate ruptured from falling, improve the seismic seeurity of floor.
On the basis of above-described embodiment, in another embodiment of the present invention, in described (2) step, first the side of precast beam is provided with precast plate, then arrange at its opposite side and exempt from hold mode, exempt from hold mode and precast plate, precast beam top form cast-in-situ concrete die cavity jointly.So, when adopting abovementioned steps, the side of precast beam is provided with precast plate, and its opposite side is provided with exempts from hold mode, exempts from hold mode and precast plate, precast beam top when jointly forming cast-in-situ concrete die cavity, after having built concrete, do not need stripping, can construct further, decrease plank and install operation, simplify construction technology, reduce construction cost and material cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the connected node of a precast plate and precast beam, the precast beam comprising precast plate and be connected with precast plate, it is characterized in that, the junction of described precast plate and precast beam is provided with connector, described connector comprises cage of reinforcement, and described precast plate, precast beam and connector between the two form one by cast-in-situ concrete.
2. the connected node of precast plate according to claim 1 and precast beam, it is characterized in that, described cage of reinforcement comprises longitudinal reinforcement and transverse reinforcement, described longitudinal reinforcement is elongated reinforcing bar, transverse reinforcement is connecting reinforcement, described elongated reinforcing bar and connecting reinforcement are arranged in length and breadth and fixedly become cage of reinforcement, and described connecting reinforcement is provided with turnover.
3. the connected node of precast plate according to claim 2 and precast beam, is characterized in that, described elongated reinforcing bar and connecting reinforcement are by being welded to connect into cage of reinforcement.
4. the connected node of precast plate according to claim 2 and precast beam, is characterized in that, described elongated reinforcing bar and connecting reinforcement connect into cage of reinforcement by colligation.
5. the connected node of precast plate according to claim 2 and precast beam, is characterized in that, described connecting reinforcement end is provided with linkage.
6. the connected node of precast plate according to claim 5 and precast beam, is characterized in that, described linkage is the screw thread being arranged at connecting reinforcement end.
7. the connected node of precast plate according to claim 2 and precast beam, is characterized in that, described connecting reinforcement is or/and the end of elongated reinforcing bar is provided with pier nose; Or described connecting reinforcement two ends arrange bending section; Or described connecting reinforcement is intersect after bending to form; Or the bending angle scope of described connecting reinforcement is 20 °-60 °; Or described connecting reinforcement is or/and elongated reinforcing bar is indented bars is made; Or described precast plate is hollow pre-fabricated panels or prestressing force precast plate.
8. the connected node of precast plate according to any one of claim 1 to 7 and precast beam, it is characterized in that, the link of described precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, reinforcing bar is had or/and steel strand and precast beam are arranged in intersecting vertically in precast plate, and reinforcing bar is or/and steel strand expose and stretch in cast-in-situ concrete die cavity, cast-in-situ concrete is built and is formed the superimposed connecting overall of T-shaped between precast plate and precast beam; Or the vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, choose the upper corner of section lower corner near precast beam outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity; Or have reinforcing bar in described precast plate or/and steel strand expose and stretch into after in cast-in-situ concrete die cavity, connected by linkage, described linkage is compression sleeve; Or have embedded bar to expose in described precast beam jointly to build in cast-in-situ concrete with cage of reinforcement; Or the link of described precast plate is provided with V-type notch or double V-groove; Or the link of described precast plate is provided with step platform, elongated steel-bar arrangement is had on step platform in cage of reinforcement, connecting reinforcement part stretches in step platform, have reinforcing bar in precast plate or/and steel strand and precast beam are set in parallel, cast-in-situ concrete is built and is formed the superimposed connecting overall of T-shaped between precast plate and precast beam; Or the vertical cross-section shape in step platform is vertical plane or inclined-plane, choosing portion end surface outside described step platform lower is vertical plane, choose the upper corner of section lower corner near precast beam outside step platform lower, form cast-in-situ concrete die cavity, cage of reinforcement is placed in cast-in-situ concrete die cavity; Or have embedded bar to expose in described precast beam jointly to build in cast-in-situ concrete with cage of reinforcement; Or the embedded bar exposed in described precast beam is stirrup; Or described stirrup is open stirrup; Or the dowel in described cage of reinforcement is horizontal L shape reinforcing bar, the elongated bar splicing in described L shape reinforcing bar and open stirrup or fixing after overlapping; Or described precast beam is exterior wall, and the side of body of wall is provided with precast plate, its opposite side is provided with exempts from hold mode, exempts from hold mode and precast plate, body of wall top form cast-in-situ concrete die cavity jointly; Or described in exempt from hold mode and comprise stencil body, at least one side of described stencil body is provided with flanging, described in exempt from hold mode and be fixed on cage of reinforcement; Or described stencil body is steel plate, described flanging is elastic telescopic face, or described stencil body is bamboo slab rubber, wood glue plate or plastic plate; Or the both sides of described stencil body are provided with elastic telescopic face, described elastic telescopic face is that steel plate edge is compressed into fold and forms; Or described stencil body is provided with bleeding aperture; Or described stencil body is provided with fin; Or described fin and stencil body one-body molded, or described fin and stencil body divide body formed and described fin to be fixed on stencil body; Or
Institute's fin is provided with reinforcing bar locating slot.
9. a construction method for split precast plate and precast beam, is provided with the connected node of precast plate according to any one of claim 1 to 8 and precast beam, it is characterized in that: comprise the following steps in the mosaic of described precast plate and precast beam
(1) precast plate is laid on precast beam;
(2) in the mosaic of precast plate and precast beam, cage of reinforcement is laid;
(3) in the mosaic of precast plate and precast beam, concreting;
(4) namely maintenance obtains split precast plate and precast beam.
10. the construction method of a kind of split precast plate according to claim 9 and precast beam, it is characterized in that, in described (2) step, the embedded bar exposed in described precast beam is open stirrup, dowel in described cage of reinforcement is horizontal L shape reinforcing bar, first elongated reinforcing bar is inserted in open stirrup, fix after overlap joint or overlap joint; Or in described (2) step, first the side of precast beam is provided with precast plate, then arrange at its opposite side and exempt from hold mode, exempt from hold mode and precast plate, precast beam top form cast-in-situ concrete die cavity jointly.
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| CN201510593291.4A CN105275091A (en) | 2015-09-17 | 2015-09-17 | Prefabricated slab and prefabricated beam connection node and construction method thereof |
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| CN108060719A (en) * | 2017-12-18 | 2018-05-22 | 南京林业大学 | More, high-rise wood/bamboo frame structure core column type node |
| CN110005109A (en) * | 2019-04-01 | 2019-07-12 | 智聚装配式绿色建筑创新中心南通有限公司 | A kind of open flume type prestressed concrete overlapped slab |
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