CN104074274B - The connection node of prefabricated sandwich Side fascia - Google Patents
The connection node of prefabricated sandwich Side fascia Download PDFInfo
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- CN104074274B CN104074274B CN201410340657.2A CN201410340657A CN104074274B CN 104074274 B CN104074274 B CN 104074274B CN 201410340657 A CN201410340657 A CN 201410340657A CN 104074274 B CN104074274 B CN 104074274B
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Abstract
The connection node of a kind of prefabricated sandwich Side fascia, including prefabricated sandwich Side fascia and composite beam, the shear connector that prefabricated sandwich Side fascia is arranged with composite beam in-situ layer by being arranged on the shearing keyway of interior impeller is connected；Shear connector trench bottom arranges connecting strand, and connecting strand one end is embedded in prefabricated sandwich Side fascia, and the other end is through shear connector trench bottom and is fixed on composite beam in-situ layer.It is provided with in shear connector that shearing keyway is stretched in one end, the other end extends to the shear connector additional bar of composite beam frame force rib bottom, improves the bonding strength between Side fascia and composite beam.It is connected for multiple between prefabricated sandwich Side fascia and the composite beam of the present invention, the attachment structure that formation upper suspension, lower flexible are spacing, reduce the prefabricated sandwich exterior wall structural strength to building body to contribute, improve anti-seismic performance, and simplify reinforcing bar process when prefabricated sandwich Side fascia produces and production mould, improve production efficiency.
Description
Technical field
The present invention relates to technical field of fixed buildings, be specifically related to the connection node of a kind of prefabricated sandwich Side fascia.
Background technology
In existing assembled architecture, the connection node of prefabricated sandwich Side fascia is: is embedded with one on the interior impeller of prefabricated sandwich Side fascia with composite beam junction and exclusive stretches anchor bar, overhanging anchor bar is " L-shaped ", one end is embedded in interior impeller, and the other end stretches out in interior impeller top and is positioned at prefabricated sandwich Side fascia plane.With the in-situ layer bar connecting of composite beam after anchor bar external part being bent during construction, by cast-in-place concrete, overhanging anchor bar is anchored in composite beam and laminated floor slab, thus prefabricated sandwich Side fascia and composite beam are linked together.This prefabricated sandwich Side fascia is that line is connected with the connected mode of composite beam, and the stiffness contribution of major structure of construction is big, and not easily dissipate during earthquake seismic energy.The external part of first overhanging anchor bar must be launched during construction, then be bent to composite beam in-situ layer.This processing mode first launching to bend again, it is easy to make reinforcing bar impaired, structural strength reduces, and operating process is complicated, and efficiency of construction is low.Owing to adopting overhanging anchor bar to be attached, flat mouth can only be adopted to connect between the prefabricated sandwich Side fascia of upper and lower layer, therefore prefabricated sandwich Side fascia remains basically stable with the absolute altitude of composite beam or laminated floor slab, it is susceptible to the spillage of horizontal direction when building in-situ layer concrete, pollutes the exterior facing of prefabricated sandwich Side fascia.
Summary of the invention
The technical problem to be solved is: the problems such as the contribution of the main building rigidity of structure is big for the prefabricated sandwich Side fascia existed in prior art and the attachment structure of composite beam, poor seismic behavior, construction complexity, and the connection node of a kind of prefabricated sandwich Side fascia is provided, simplify constructing operation, reduce the precast wall panel stiffness contribution to main building structure, thus improving structural strength and the anti-seismic performance of building structure main body.
The present invention solves that its technical problem be the technical scheme is that the connection node constructing a kind of prefabricated sandwich Side fascia, including composite beam and prefabricated sandwich Side fascia, it is characterized in that, described composite beam includes preformed layer and in-situ layer, the multiple stirrups extending to described in-situ layer it are provided with in described preformed layer, described prefabricated sandwich Side fascia includes outer impeller successively, heat-insulation layer and interior impeller, described interior impeller connects the side being arranged on described composite beam, in described prefabricated sandwich Side fascia, impeller is upper in being provided with shearing keyway with described composite beam in-situ layer junction, on described composite beam in-situ layer, the shearing keyway opposite position place with described interior impeller is provided with the shear connector matched with described shearing keyway.
In the connection node of prefabricated sandwich Side fascia of the present invention, the top surface of described shearing keyway is provided with the drafting angle tilted to described composite beam in-situ layer top side.
In the connection node of prefabricated sandwich Side fascia of the present invention, described shearing keyway cross sectional shape in the vertical plane being perpendicular to described interior impeller is right-angled trapezium.
In the connection node of prefabricated sandwich Side fascia of the present invention, the vertical side of described shearing keyway and/or bottom surface, downside arrange the projection that oriented described shear connector direction extends.
In the connection node of prefabricated sandwich Side fascia of the present invention, in described shearing keyway, vertical side and/or bottom surface, downside arrange the horizontal fin that oriented described shear connector direction is prominent.
In the connection node of prefabricated sandwich Side fascia of the present invention, it is additionally provided with connecting strand in described shearing keyway, described connecting strand includes pre-buried end and fixing end, the pre-buried end of described connecting strand is embedded in described interior impeller, and described connecting strand is fixed to hold inside through the bottom surface, downside of described shearing keyway to described shearing keyway and extend in described composite beam in-situ layer and is fixed on bearing rod.Described connecting strand, for flexibly connecting rope or the rope that is rigidly connected, can adopt high-strength steel cable to make.For increasing the bonding strength of the pre-buried end of described connecting strand and interior impeller, being positioned at the transverse steel being arranged below horizontal direction and/or the reinforced mesh of described shearing keyway in described interior impeller, the pre-buried end of described connecting strand is connected with described transverse steel and/or reinforced mesh.
In the connection node of prefabricated sandwich Side fascia of the present invention, for strengthening the bonding strength between described shear connector and composite beam in-situ layer, shear connector additional bar it is provided with in described shear connector, the upper end of described shear connector additional bar extends to the bearing rod bottom of described composite beam, and the lower end of described shear connector additional bar is stretched into inside described shearing keyway.After building composite beam in-situ layer concrete, the lower end of described shear connector additional bar is anchored in shearing keyway, and upper end is anchored in composite beam in-situ layer.Each described shearing keyway arranges at least one described shear connector additional bar.
In the connection node of prefabricated sandwich Side fascia of the present invention, also include laminated floor slab, described laminated floor slab be erected at on the described composite beam preformed layer of described prefabricated sandwich Side fascia opposite side, by building the in-situ layer concrete of described composite beam and described laminated floor slab, described prefabricated sandwich Side fascia is connected as entirety with described composite beam and described laminated floor slab.For improving the bonding strength of prefabricated sandwich Side fascia and composite beam and laminated floor slab, it is preferable that the upper end arranging described shear connector additional bar and extends to described laminated floor slab in-situ layer below the frame force rib of described composite beam.
In the connection node of prefabricated sandwich Side fascia of the present invention, processing and fabricating for convenience of shearing keyway, preferably in shearing shearkey box pre-buried in described shearing keyway, described shearing shearkey box includes the box body structure enclosed by upper plate, lower shoe and three sidewalls.When described shearing shearkey box is pre-buried, its opening surface is arranged towards described composite beam side.Described connecting strand is fixed the bottom surface, downside held through described shearing shearkey box and is stretched into described shearing shearkey box inside and extend the bearing rod being fixed in described composite beam in-situ layer through the setting of multiple stirrups.During for ensureing production and processing easy and be unlikely to deform when pre-buried, shearing shearkey box adopts metal material to make.
Implement the connection node of the prefabricated sandwich Side fascia of the present invention, have the advantages that by arranging multiple shearing keyway on interior impeller, composite beam in-situ layer arranges the multiple shear connectors matched with described shearing keyway, the concrete compressive property of shear connector can be utilized to bear Side fascia deadweight, utilize the concrete anti-seismic performance of multiple shear connector to bear Side fascia earthquake load in the horizontal direction；This connects in node, is connected for multiple between Side fascia with composite beam, the flexible connecting structure that formation Side fascia upper suspension formula, lower flat are spacing, reduces Side fascia to composite beam stiffness effect, improves structural strength and the anti-seismic performance of main structure body.By arranging drafting angle in shearing keyway top surface, it is to avoid cast-in-place concrete shear connector produces air owing to shrinking with interior impeller contact position, it is to avoid shear connector endogenous cause of ill exists air and forms cavity；The vertical side of shearing keyway arranges projection, enhances the bonding strength of cast-in-place shear connector and shearing keyway, the plane load of opposing Side fascia.By arranging one end and being anchored in Side fascia, the other end be fixed on the connecting strand of composite beam in-situ layer, when under earthquake or other situations, shear connector is destroyed, the tensile property that can utilize connecting strand bears Side fascia plane external load, it is to avoid a certain layer Side fascia collapses and cause lower floor's Side fascia load-bearing to cause and collapse continuously；During earthquake, the connection flexibly connecting rope and composite beam is non-rigid connection, moreover it is possible to consume a part of seismic energy.By arranging shear connector additional bar, strengthen the tensile strength between shear connector and composite beam in-situ layer；Shear connector additional bar only needs to place at the construction field (site), very convenient.By shearing shearkey box pre-buried in shearing keyway, facilitate the fabrication and processing of shearing keyway.The connection node of the prefabricated sandwich Side fascia in employing this programme, compared with adopting overhanging anchor bar in prior art, can be connected the connection of upper and lower layer Side fascia by flat mouth and be set to tongue and groove connection, it is to avoid build the spillage of horizontal direction during in-situ layer concrete；And reduce on-the-spot reinforcing bar process, simplify constructing operation, improve efficiency of construction.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the embodiment of the present invention one；
Fig. 2 is the cross-sectional view of the embodiment of the present invention two；
Fig. 3 is the cross-sectional view of the embodiment of the present invention three
Fig. 4 is the perspective view of the shearing shearkey box in the present invention with connecting strand.
Fig. 5 is the perspective view of the another embodiment of shearing shearkey box in Fig. 4.
In figure, the prefabricated sandwich Side fascia of 1-, the outer impeller of 11-, 12-heat-insulation layer, impeller in 13-, 14-transverse steel, the fire-retardant connector of 15-；2-composite beam, 21-composite beam preformed layer, 21a-stirrup, 22-composite beam in-situ layer, 22a-frame force rib；3-laminated floor slab, 31-laminated floor slab preformed layer, 32-laminated floor slab in-situ layer；4-shearing keyway, 41-shearing shearkey box, 41a-slope, 41b-fin, 41c-short column body, 41d-preformed hole；5-connecting strand, the pre-buried end of 51-, the fixing end of 52-；6-shear connector additional bar, 61-shear connector additional bar upper end, 62-shear connector additional bar lower end；7-tongue and groove.
Detailed description of the invention
Embodiment one, referring to Fig. 1, the connection node of the prefabricated sandwich Side fascia in this embodiment, is assembled at the construction field (site) by prefabricated sandwich Side fascia 1 and composite beam 2.Prefabricated sandwich Side fascia 1 includes outer impeller 11, heat-insulation layer 12 and interior impeller 13.Interior impeller 13 is provided with multiple shearing keyway 4 with composite beam 2 junction, interior impeller 13 is positioned at the lower section of shearing keyway 4, is embedded with transverse steel 14 in the horizontal direction.The upper side edge of shearing keyway 4 is along the upper side edge edge lower than heat-insulation layer 12.In the horizontal direction shown in Fig. 1, the thickness of shearing keyway 4 is slightly less than the thickness of interior impeller 13, the opening surface of shearing keyway 4 towards composite beam side, the accommodation space that shearing keyway 4 defines an opening, other five faces enclose.The upper top side face of shearing keyway 4 arranges the drafting angle tilted to composite beam in-situ layer top side, on vertical direction as shown in Figure 1, the cross sectional shape of shearing keyway 4 is preferably right-angled trapezium, it is to avoid shear connector cast-in-place concrete produces air owing to shrinking with interior impeller contact position.Composite beam 2 includes preformed layer 21 and in-situ layer 22, and preformed layer 21 is internal is provided with the multiple stirrup 21a extending to described in-situ layer；Frame force rib 22a is arranged in in-situ layer 22, and is connected along the long axis direction of composite beam 2 is fixing with all stirrup 21a；Composite beam preformed layer 21 side is against interior impeller 13, and preformed layer 21 upper edge is lower than the lower edge of shearing keyway 4, and the height of in-situ layer 22 is more than the height of shearing keyway 4.After building composite beam in-situ layer 22, the cast-in-place concrete in shearing keyway 4 is shaped to shear connector (see shearing keyway 4 inner concrete in Fig. 1 Suo Shi), and prefabricated sandwich Side fascia 1 and composite beam 2 are connected as entirety by shear connector.Utilize the concrete compressive property of shear connector to bear the deadweight of prefabricated sandwich Side fascia 1, utilize the concrete anti-seismic performance of shear connector to bear prefabricated sandwich Side fascia 1 earthquake load in the horizontal direction.Connection node in this preferred embodiment is connected for multiple between prefabricated sandwich Side fascia 1 and composite beam 2, form the flexible connecting structure that prefabricated sandwich Side fascia 1 upper suspension formula, lower flat are spacing, reduce the impact on composite beam 2 rigidity of the prefabricated sandwich Side fascia 1, improve structural strength and the anti-seismic performance of main structure body.
Flexibly connect ability in order to what strengthen prefabricated sandwich Side fascia 1 and composite beam 2, connecting strand 5 is set in the shearing keyway 4 of interior impeller 13.Connecting strand 5 is flexible high-strength steel cable, and including pre-buried end 51 and fixing end 52, pre-buried end 51 is prefabricated in interior impeller 13 and be fixed on transverse steel 14, fixing end 52 bottom shearing keyways 4 and suspension to composite beam frame force rib 22a.After building composite beam in-situ layer 22, together with the fixing end 52 traverse frame force rib 22a of connecting strand is anchored at composite beam 2.By arranging connecting strand 5 in shearing keyway 4, when Side fascia shear connector under earthquake or other situations destroys, the tensile property of connecting strand 5 is utilized to bear the plane external load of prefabricated sandwich Side fascia 1；During earthquake, the connection of connecting strand 5 and composite beam 2 is non-rigid connection, it is possible to allow prefabricated sandwich Side fascia 1 to have a small amount of displacement in horizontal, moreover it is possible to consume a part of seismic energy.
Embodiment two, referring to Fig. 2, the connection node of the prefabricated sandwich Side fascia in this embodiment, is assembled at the construction field (site) by prefabricated sandwich Side fascia 1, composite beam 2 and laminated floor slab 3.Wherein laminated floor slab includes preformed layer 31 and in-situ layer 32, and preformed layer 31 is erected at the top of the composite beam preformed layer 21 with prefabricated sandwich Side fascia opposite side.In this preferred embodiment, prefabricated sandwich Side fascia 1 is connected with the shear connector on composite beam in-situ layer 22 by the shearing keyway 4 arranged on interior impeller 13 with composite beam 2, identical with embodiment one.Different from embodiment one, shearing keyway 4 in the present embodiment is additionally provided with a shear connector additional bar, shear connector additional bar is L-shaped, the upper end 61 of shear connector additional bar is passed below the frame force rib 22a of composite beam 2 and extends to the in-situ layer 32 of laminated floor slab 3, and it is internal that shearing keyway 4 is stretched in the lower end 62 of shear connector additional bar.After building the in-situ layer concrete of composite beam 2 and laminated floor slab 3, the upper end 61 of shear connector additional bar is anchored at laminated floor slab in-situ layer 32, and lower end 62 is anchored in shear connector concrete.Prefabricated sandwich Side fascia 1 is linked together by shear connector additional bar and shear connector jointly with composite beam 2 and laminated floor slab 3, and shear connector additional bar can strengthen the tensile strength of the shear connector between prefabricated sandwich Side fascia 1 and composite beam 2 and laminated floor slab 3.
Embodiment three, referring to Fig. 3 to Fig. 5, the connection node of the prefabricated sandwich Side fascia in this embodiment, is assembled at the construction field (site) by prefabricated sandwich Side fascia 1, composite beam 2 and laminated floor slab 3.
In Fig. 3, prefabricated sandwich Side fascia 1 includes outer impeller 11, heat-insulation layer 12 and interior impeller 13, adopts fire-retardant connector 15 outer impeller 11, heat-insulation layer 12 and interior impeller 13 to be linked together；Interior impeller 13 is provided with multiple shearing keyway 4 with composite beam 2 junction, interior impeller 13 is positioned at the lower section of shearing keyway 4, is embedded with transverse steel 14 in the horizontal direction.Interior impeller 13 upper end is longer than the upper end of outer impeller 11 and warming plate 12, and interior impeller 13 lower end is shorter than outer impeller 11 and warming plate 12 lower end, and tongue and groove 7 overlap joint that the prefabricated sandwich Side fascia of upper and lower layer is arranged by interior impeller 13 connects.
As shown in Figure 4, in shearing keyway 4, pre-buried shearing shearkey box 41, is provided with connecting strand 5 bottom shearing shearkey box 41.Shearing shearkey box 41 is the can that an opening, five faces enclose, and its opening surface is arranged towards composite beam in-situ layer 22.The top surface of shearing shearkey box 43 be to composite beam in-situ layer top side tilt slope 41a, the lateral view of shearing shearkey box 41 be shaped as right-angled trapezium.The vertical side vertical with interior impeller 13 is designed with the fin 41b to tray interior projection, and on the downside of shearing shearkey box 41, bottom surface remains for the preformed hole 41d through connecting strand 5 in advance.Connecting strand 5 is made by after a high-strength steel cable doubling, and the free end of doubling back tightwire is the pre-buried end 51 of connecting strand, adopts high duty metal set to tighten, and the transverse steel 14 in the interior impeller 13 of traverse；The fixing end 52 that Guan Bi end is connecting strand of doubling back tightwire, for closed hoop, fixing end 51, after the preformed hole 41d traverse in shearing keyway cassette bottom face, stretches into the tray interior of shearing shearkey box 41.The fin 41b of shearing shearkey box 41 may also take on the embodiment of another equivalence, as it is shown in figure 5, two vertical sides are designed with the short column body 41c to tray interior projection in shearing shearkey box 41, all the other structures are identical with shearing shearkey box in Fig. 4.
During construction, the prefabricated sandwich Side fascia 1 of lifting fixing band shearing shearkey box 41 and connecting strand 5；Lifting composite beam preformed layer, by frame force rib 22a through the fixing end 52 of all of connecting strand, by composite beam preformed layer 21 side impeller 13 in prefabricated sandwich Side fascia, and makes the lower edge lower than shearing shearkey box 41, the upper edge of composite beam preformed layer 21；Composite beam preformed layer 21 opposite side erection laminated floor slab preformed layer 31, lays the in-situ layer reinforcing bar of laminated floor slab 3；Shear connector additional bar lower end 62 being placed in shearing shearkey box 41 internal, shear connector additional bar upper end 61 extends, through the frame force rib 22a of composite beam, the in-situ layer reinforcing bar being fixed to laminated floor slab 3；Building the in-situ layer concrete of composite beam 2 and laminated floor slab 3, in the enclosed space of shearing shearkey box 41, cast-in-place concrete forms shear connector, and the fixing end 52 of connecting strand and shear connector additional bar upper end 61 are anchored at cast-in-place concrete layer.Prefabricated sandwich Side fascia is connected as entirety with composite beam and laminated floor slab by shear connector, connecting strand and shear connector additional bar jointly.
Owing to adopting tongue and groove to connect between the prefabricated sandwich Side fascia of upper and lower two-layer, and laminated floor slab preformed layer upper edge is lower than the lower edge of shearing shearkey box, during construction cast-in-place concrete, interior impeller serves the effect of vertical formwork, it is avoided that horizontal direction is towards Side fascia siphonal lobe plate side spillage, reduces external wallboard siphonal lobe plate and pollute and be in the milk waste；With the obstruction of impeller in lower floor's Side fascia, falling object from high altitude during construction, can be reduced；And guardrail can be directly installed in interior impeller upper end, simplify the installation of guardrail and remove operation, further shorten the duration.
Claims (5)
1. the connection node of a prefabricated sandwich Side fascia, including composite beam and prefabricated sandwich Side fascia, described composite beam includes preformed layer and in-situ layer, the multiple stirrups extending to described in-situ layer it are provided with in described preformed layer, described prefabricated sandwich Side fascia includes outer impeller successively, heat-insulation layer and interior impeller, described interior impeller connects the side being arranged on described composite beam, in described prefabricated sandwich Side fascia, impeller is upper in being provided with shearing keyway with described composite beam in-situ layer junction, on described composite beam in-situ layer, the shearing keyway opposite position place with described interior impeller is provided with the shear connector matched with described shearing keyway；It is characterized in that, be additionally provided with connecting strand in described shearing keyway, described connecting strand includes pre-buried end and fixing end, and the pre-buried end of described connecting strand is embedded in described interior impeller；Described connecting strand is fixed and is held the bottom surface, downside through described shearing keyway, arrives inside described shearing keyway, finally extends in described composite beam in-situ layer and is fixed on bearing rod.
2. the connection node of prefabricated sandwich Side fascia according to claim 1, it is characterized in that, being positioned at the transverse steel being arranged below horizontal direction and/or the reinforced mesh of described shearing keyway in described interior impeller, the pre-buried end of described connecting strand is connected with described transverse steel and/or reinforced mesh.
3. the connection node of prefabricated sandwich Side fascia according to claim 1, it is characterized in that, shear connector additional bar it is provided with in described shear connector, the upper end of described shear connector additional bar extends to below the bearing rod of described composite beam in-situ layer, and the lower end of described shear connector additional bar is stretched in described shearing keyway with described shear connector.
4. the connection node of prefabricated sandwich Side fascia according to claim 3, it is characterized in that, also include laminated floor slab, setting up laminated floor slab preformed layer with described prefabricated sandwich Side fascia opposite side on described composite beam preformed layer, described shear connector additional bar upper end is passed below the frame force rib of described composite beam and extends to the in-situ layer of described laminated floor slab.
5. the connection node of prefabricated sandwich Side fascia according to claim 3, it is characterized in that, pre-buried shearing shearkey box in described shearing keyway, described shearing shearkey box includes the box body structure that opening five face encloses, and the opening surface of described shearing shearkey box is arranged towards described composite beam side.
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| CN201410340657.2A CN104074274B (en) | 2014-07-17 | 2014-07-17 | The connection node of prefabricated sandwich Side fascia |
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| CN201410340657.2A CN104074274B (en) | 2014-07-17 | 2014-07-17 | The connection node of prefabricated sandwich Side fascia |
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| CN106869539A (en) * | 2017-03-23 | 2017-06-20 | 黄河科技学院 | A kind of assembled factory building |
| CN107642194A (en) * | 2017-11-10 | 2018-01-30 | 宁乡远大住宅工业有限公司 | A kind of prefabricated sandwich out-hung panel and its structural system, construction method |
| CN107882269A (en) * | 2017-11-24 | 2018-04-06 | 远大住宅工业（天津）有限公司 | Composite beam and its production method |
| CN110512772A (en) * | 2019-09-26 | 2019-11-29 | 远大住宅工业（天津）有限公司 | The connecting node of out-hung panel and beam |
| CN112554139A (en) * | 2020-11-27 | 2021-03-26 | 中国电建集团成都勘测设计研究院有限公司 | Flexible connection structure for anti-seismic beams in dam of high earth-rock dam |
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| FR2446899A1 (en) * | 1979-01-17 | 1980-08-14 | Bianchina Denis | CONSTRUCTION IN PREFABRICATED ELEMENTS USING DRY SUPERIMPOSED POSTS |
| CN201943370U (en) * | 2010-11-12 | 2011-08-24 | 天津开发区福林发展有限公司 | High-rise residential system in configuration of series gypsum composite board and reinforced light frame structure |
| CN201915552U (en) * | 2010-12-29 | 2011-08-03 | 天津开发区福林发展有限公司 | Gypsum multi-functional envelope wallboard and connecting structure thereof between gypsum multi-functional envelope wallboard and whole building |
| CN203603263U (en) * | 2013-11-29 | 2014-05-21 | 湖北弘毅钢结构工程有限公司 | Fabricated connecting structure of cross-shaped superposed beam and wall panels |
| CN203947586U (en) * | 2014-07-17 | 2014-11-19 | 长沙远大住宅工业集团有限公司 | The connected node of prefabricated sandwich side fascia |
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