CN218028465U

CN218028465U - Prefabricated bracket combination beam

Info

Publication number: CN218028465U
Application number: CN202221240300.3U
Authority: CN
Inventors: 夏晶
Original assignee: Shanghai Tongzhu Building Technology Co ltd
Current assignee: Shanghai Tongzhu Building Technology Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-12-13
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses a prefabricated bracket composite beam, including bottom flange board, web and top flange board, top flange board top is fixed with prefabricated template groove of pouring, prefabricated template inslot of pouring is equipped with the through-hole, run through the peg in the through-hole, the peg is fixed in top flange board, prefabricated template inslot of pouring is paved with the concrete bracket, be provided with in the concrete bracket and preset the reinforcing bar, the peg top exposes concrete bracket top surface, prefabricated template tank bottom surface of pouring is fixed with the spacer bar, spacer bar fixed connection is in the web for the prefabricated template groove of pouring of this technical scheme, concrete bracket and girder steel are prefabricated together for take the bracket concrete composite beam can easily wide application in actual engineering.

Description

Prefabricated bracket combination beam

Technical Field

The utility model relates to a building engineering technical field especially relates to an economical and practical's prefabricated bracket combination roof beam.

Background

At present, the steel concrete composite beam is an integral common stress T-shaped section bearing member formed by a steel beam and a concrete wing plate through a shear connector. The concrete wing plate can be divided into two modes of a mode with a bracket and a mode without the bracket, the combined beam with the bracket increases the section moment of inertia, and can obtain larger rigidity and bearing capacity, but the construction and the structure of the bracket part are more complicated, and the combined beam with the bracket is less in application from the angle of convenient construction. The utility model discloses make the combination beam of taking the bracket realize more easily, can promote its rate of utilization, the bracket is at the prefabricated shaping of mill, and the scene is used with cast-in-place crossbeam or cast in situ concrete floor coincide again, reaches the effect that improves the rigidity and the bearing capacity of combination beam by a wide margin, has reduced the steel volume for the structure.

Disclosure of Invention

An object of the utility model is to provide an economical prefabricated bracket combination beam.

Realize the utility model discloses the technical solution of purpose does: the utility model provides a prefabricated bracket composite beam, includes bottom flange board, web and top flange board, top flange board top is fixed with prefabricated casting template groove, be equipped with the through-hole on the prefabricated casting template groove, run through the peg in the through-hole, the peg is fixed in top flange board, prefabricated casting template inslot is paved with the concrete bracket, be provided with in the concrete bracket and preset the reinforcing bar, the peg top exposes concrete bracket top surface, prefabricated casting template tank bottom surface is fixed with the spacer bar, spacer bar fixed connection is in web.

Preferably, the prefabricated pouring template groove is made of any one of ultra-high performance concrete UHPC, steel and plastics.

Preferably, the included angle between the supporting steel bars and the beam web is 45 degrees.

Preferably, the support steel bars are arranged in a mirror symmetry mode by taking the beam webs as centers, and a pair of beam webs is arranged at the position of every 50cm away from each other.

Preferably, an elongated cast-in-place 'inverted T' shaped channel is provided at the top of the concrete receptacle.

Preferably, the elongated cast-in-place 'inverted-T' grooves are symmetrically arranged in pairs with the web as a central line.

Preferably, the elongated cast-in-place "inverted T-shaped" groove comprises a vertical cast-in-place elongated groove and a transverse cast-in-place locking groove, the vertical cast-in-place elongated groove penetrates through the transverse cast-in-place locking groove, and the width of the transverse cast-in-place locking groove is greater than that of the vertical cast-in-place elongated groove.

Preferably, the surfaces of the bottom flange plate, the beam web plate, the top flange plate and the support steel bars are all provided with anticorrosive coatings.

Compared with the prior art, the utility model, it is showing the advantage: the simple structural form is adopted, the prefabricated pouring template groove, the concrete bracket and the steel beam are prefabricated together in a factory, the complex process of a construction site is avoided, and the concrete combined beam with the bracket can be easily and widely applied to actual engineering; according to the technical scheme, the concrete bracket on the top flange plate is prefabricated, so that the out-of-plane stable bearing capacity of the steel beam can be greatly improved, and the steel consumption can be reduced while the stability of the construction stage can be kept due to the small section of the top flange plate of the steel beam; the height of the composite beam is increased, and the rigidity and the bearing capacity of the composite beam are greatly improved; after the concrete bracket is added, the steel beam neutralization shaft moves upwards, so that the neutralization shaft can be conveniently controlled to be above the steel beam, the whole section of the steel beam is pulled, the width-thickness ratio and the height-thickness ratio of the section of the steel beam do not need to be controlled according to the plastic design requirement, and the steel consumption is reduced; the prefabricated pouring template groove wraps the concrete bracket, and the prefabricated pouring template groove is not dismantled on site after being prefabricated and formed in a factory, so that the prefabricated forming effect of the factory, the collision in the transportation process and the attractiveness after the on-site installation are effectively improved; the long cast-in-place inverted T-shaped grooves are symmetrically arranged, the middle part of a cast-in-place beam or a floor slab can be installed, and the connecting positions between the end parts of the cast-in-place beam or the floor slab can also be installed, so that the long cast-in-place inverted T-shaped grooves have the same stability, have a locked casting structure during cast-in-place, and have better fixity and safety compared with the single stud; the supporting steel bars enhance the structural strength in the processes of factory prefabrication, transportation and bearing, and can further reduce the steel consumption of the top flange plate.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a main structure of an embodiment of the present invention.

Detailed Description

As shown in fig. 1, a prefabricated bracket composite beam comprises a bottom flange plate 1, a beam web plate 2 and a top flange plate 3, a prefabricated casting template groove 7 is fixed above the top flange plate 3, a through hole is formed in the prefabricated casting template groove 7, a stud 8 penetrates through the through hole, the stud 8 is fixed on the top flange plate 3, a concrete bracket 6 is fully paved in the prefabricated casting template groove 7, a steel bar 4 is preset in the concrete bracket 6, the top of the stud 8 is exposed out of the top surface of the concrete bracket 6, a support steel bar 5 is fixed on the bottom surface of the prefabricated casting template groove 7, the support steel bar 5 is fixedly connected to the beam web plate 2, an included angle between the support steel bar 5 and the beam web plate 2 is 45 degrees, the support steel bar 5 is arranged in a mirror symmetry mode by taking the beam web plate 2 as a center, a pair of support steel bars 5 is arranged at positions 50cm apart from each other in the beam web plate 2, the prefabricated casting template groove 7 is made of ultra-high performance concrete, the bottom flange plate 1, the beam web plate 2, the top flange plate 3 and the support steel bar 5 are arranged in a transverse through groove, the transverse casting slot is arranged in-site, and the transverse pouring slot is arranged in-formed by a transverse pouring elongated slot.

The utility model discloses technical scheme, concrete bracket 6 puts the steel structure frame of cast-in-place crossbeam 9 to the scene, can be with the 8 tops of peg through the cast in situ, vertical cast in situ elongated slot and horizontal cast in situ locked groove constitute locking stable structure with the concrete of cast in situ crossbeam 9, microscler cast in situ 'shape' groove uses web 2 as central line symmetrical arrangement in pairs, can pour the cast in situ crossbeam 9 middle part and form the cast structure of locking, also can pour the hookup location between the 9 tip of cast in situ crossbeam, when pouring the hookup location between the 9 tip of cast in situ crossbeam, microscler cast in situ 'shape' groove corresponds the tip of the steel structure frame of respective cast in situ crossbeam 9 and forms with concrete placement, same steadiness has been had, also possessed the cast structure of locking, have better fixity and security than simply leaning on peg 8.

The technology adopts a simple construction form, and the prefabricated pouring template groove, the concrete bracket and the steel beam are prefabricated together in a factory, so that the complex process of a construction site is avoided, and the concrete combined beam with the bracket can be easily and widely applied to actual engineering; according to the technical scheme, the concrete bracket on the top flange plate is prefabricated, so that the out-of-plane stable bearing capacity of the steel beam can be greatly improved, and the steel consumption can be reduced while the stability of the construction stage can be kept due to the small section of the top flange plate of the steel beam; the height of the composite beam is increased, and the rigidity and the bearing capacity of the composite beam are greatly improved; after the concrete bracket is added, the steel beam neutralization shaft moves upwards, so that the neutralization shaft can be conveniently controlled to be above the steel beam, the whole section of the steel beam is pulled, the width-thickness ratio and the height-thickness ratio of the section of the steel beam do not need to be controlled according to the plastic design requirement, and the steel consumption is reduced; the prefabricated pouring template groove wraps the concrete bracket, and the prefabricated pouring template groove is not dismantled on site after being prefabricated and formed in a factory, so that the prefabricated forming effect of the factory, the collision in the transportation process and the attractiveness after the on-site installation are effectively improved; the long cast-in-place inverted T-shaped grooves are symmetrically arranged, the middle part of the cast-in-place beam can be installed, the connecting positions between the end parts of the cast-in-place beam can also be installed, the stability is the same, a lock pouring structure is provided during cast-in-place, and the stability and the safety are better than those of a structure which only depends on studs; the supporting steel bars enhance the structural strength in the processes of factory prefabrication, transportation and bearing, and can further reduce the steel consumption of the top flange plate.

In addition to the above embodiments, other embodiments not described above should be within the scope of the present invention. The particular embodiments described herein are illustrative only, as various modifications or additions may be made or substituted in the art without departing from the spirit and scope of the invention as defined in the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation, the terms being used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. The prefabricated bracket combination beam comprises a bottom flange plate (1), a beam web plate (2) and a top flange plate (3), and is characterized in that a prefabricated pouring template groove (7) is fixed above the top flange plate (3), a through hole is formed in the prefabricated pouring template groove (7), a stud (8) penetrates through the through hole, the stud (8) is fixed on the top flange plate (3), a concrete bracket (6) is fully paved in the prefabricated pouring template groove (7), a steel bar (4) is arranged in the concrete bracket (6) in advance, the top of the stud (8) is exposed out of the top surface of the concrete bracket (6), supporting steel bars (5) are fixed on the bottom surface of the prefabricated pouring template groove (7), and the supporting steel bars (5) are fixedly connected to the beam web plate (2).

2. A prefabricated bracket composite beam according to claim 1, wherein said prefabricated cast formwork trough (7) is made of any one of ultra high performance concrete UHPC, steel and plastic.

3. A precast pallet combination beam as defined in claim 1, characterised in that the angle between the supporting rebars (5) and the web (2) is 45 °.

4. A prefabricated pallet composite beam according to claim 1, characterised in that said supporting rebars (5) are arranged mirror-symmetrically centered on the web (2) and a pair of webs (2) are arranged at a distance of 50 cm.

5. A precast bracket composite beam according to claim 1 characterised in that an elongated cast in place "inverted T" channel is provided on top of the concrete bracket (6).

6. A precast pallet combination beam according to claim 5, characterised in that the elongate cast in place "inverted T" channels are arranged symmetrically in pairs with the web (2) as the centre line.

7. A precast bracket combination beam as set forth in claim 5, wherein the elongated cast-in-place "inverted T-shaped" channel comprises a vertical cast-in-place elongated channel running through a transverse cast-in-place locking channel, the transverse cast-in-place locking channel having a width greater than the width of the vertical cast-in-place elongated channel.

8. A precast pallet combination beam according to any of claims 1 to 7, characterized in that the surfaces of the bottom flange plate (1), the web plate (2), the top flange plate (3) and the supporting steel bars (5) are provided with a corrosion protection layer.