阅读说明：本技术 一种叠合楼板 (Laminated floor slab ) 是由 霍建鹏 其他发明人请求不公开姓名 于 2019-09-29 设计创作，主要内容包括：本发明公开一种叠合楼板,连接于竖向构件,所述叠合楼板包括：预制板,所述预制板包括板本体和预设于所述板本体内的第一钢筋；第二钢筋,所述第二钢筋至少部分位于所述第一钢筋的正上方,所述第二钢筋部分连接于所述板本体,另一部分伸出于所述板本体外；以及现浇层,所述现浇层设于所述预制板和所述竖向构件的上方,以使所述第二钢筋紧固于所述竖向构件和所述预制板。本发明技术方案可以避免叠合楼板的混凝土开裂,提高叠合楼板的结构强度。(The invention discloses a composite floor slab, which is connected with a vertical component, and comprises: the prefabricated plate comprises a plate body and a first steel bar which is preset in the plate body; the second steel bars are at least partially positioned right above the first steel bars, the second steel bars are partially connected to the plate body, and the other parts of the second steel bars extend out of the plate body; and the cast-in-place layer is arranged above the precast slabs and the vertical members so as to fasten the second steel bars to the vertical members and the precast slabs. The technical scheme of the invention can avoid the concrete cracking of the composite floor slab and improve the structural strength of the composite floor slab.)

1. The utility model provides a coincide floor, connects in vertical component, its characterized in that, coincide floor includes:

the prefabricated plate comprises a plate body and a first steel bar which is preset in the plate body;

the second steel bars are at least partially positioned right above the first steel bars, the second steel bars are partially connected to the plate body, and the other parts of the second steel bars extend out of the plate body; and

and the cast-in-place layer is arranged above the precast slabs and the vertical members so as to fasten the second steel bars to the vertical members and the precast slabs.

2. A composite floor slab as defined in claim 1, wherein the edge of said slab body is recessed with an installation groove, said second reinforcing bar is partially positioned in said installation groove, and the other part is positioned outside said installation groove, and said cast-in-place layer is filled in said installation groove.

3. A composite floor slab as defined in claim 2, wherein the inner wall of said installation groove is provided with a relief structure.

4. A composite floor slab as defined in claim 2, wherein said mounting groove is a strip-shaped groove or a wedge-shaped groove.

5. A composite floor slab as defined in claim 4, wherein said plurality of mounting grooves are provided at regular intervals in the width direction of said slab body, each of said mounting grooves being provided with said second reinforcing bars.

6. A composite floor slab as defined in claim 2, wherein said installation groove is defined to have a depth H₁The thickness of the plate body is H₂Then the relationship is satisfied: h₁≤0.5H₂And H₂-H₁≥30mm。

7. A composite floor slab as defined in claim 2, wherein said second reinforcing bars are defined to be located in said installation grooves by a length L₁The length of the second steel bar outside the mounting groove is L₂And the outer diameter of the second steel bar is D, so that the relation is satisfied: l is₁≥15D、L₂≥15D。

8. A composite floor slab as claimed in any one of claims 2 to 7, wherein the bottom of said installation groove is recessed with a communication opening, and said first reinforcing bar is exposed to said communication opening and can be attached to said second reinforcing bar.

9. A composite floor slab as defined in claim 8, wherein said communication openings have a cross-sectional shape of a tapered opening with a wide top and a narrow bottom.

10. A composite floor slab as claimed in claim 1, wherein said cast in place layer is a concrete layer.

Technical Field

The invention relates to the technical field of assembly type buildings, in particular to a composite floor slab.

Background

In the composite floor slab for the fabricated building, in order to avoid the problems that the protruding reinforcing steel bars (beard bars) at the ends of the precast slabs interfere with the reserved reinforcing steel bars in the wall body or the beam body and the prefabrication production efficiency is low, the method generally comprises the steps of eliminating the protruding reinforcing steel bars at the ends of the precast slabs, arranging additional reinforcing steel bars, and finally forming the composite floor slab through post-pouring concrete. However, in this way, when the laminated floor slab bears vertical gravity, force needs to be indirectly transferred between the stressed steel bars and the additional steel bars reserved in the prefabricated slabs through concrete dislocation, so that the concrete at the position is easy to crack, and the structural strength is not high.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a composite floor slab, aiming at avoiding concrete cracking and improving structural strength.

In order to achieve the above object, the present invention provides a composite floor slab connected to a vertical member, the composite floor slab comprising:

the prefabricated plate comprises a plate body and a first steel bar which is preset in the plate body;

the second steel bars are at least partially positioned right above the first steel bars, the second steel bars are partially connected to the plate body, and the other parts of the second steel bars extend out of the plate body; and

and the cast-in-place layer is arranged above the precast slabs and the vertical members so as to fasten the second steel bars to the vertical members and the precast slabs.

Optionally, an installation groove is concavely formed in the edge of the slab body, the second steel bar portion is located in the installation groove, the other portion is located outside the installation groove, and the cast-in-place layer is filled in the installation groove.

Optionally, the inner wall of the mounting groove is provided with a concave-convex structure.

Optionally, the mounting groove is a strip groove or a wedge groove.

Optionally, the quantity of mounting groove is a plurality of, and is a plurality of the mounting groove is followed the width direction interval of board body evenly sets up, each the mounting groove all is equipped with the second reinforcing bar.

Optionally, the depth of the mounting groove is defined as H₁The thickness of the plate body is H₂Then the relationship is satisfied: h₁≤0.5H₂And H₂-H₁≥30mm。

Optionally, the length of the second steel bar in the installation groove is defined as L₁The length of the second steel bar outside the mounting groove is L₂Of said second reinforcing barAnd D is the outer diameter, the relation is satisfied: l is₁≥15D、L₂≥15D。

Optionally, a communication opening is concavely formed in the bottom of the mounting groove, and the first steel bar is exposed to the communication opening and can be attached to the second steel bar.

Optionally, the cross-sectional shape of the communication port is a cone-like port with a wide top and a narrow bottom.

Optionally, the cast-in-place layer is a concrete layer.

The laminated floor slab is mainly used for being connected with a vertical member. In the production and construction process, first steel bars are preset in a slab body of the prefabricated slab, then a second steel bar part is connected to the slab body, the other part extends out of the slab body and is used for connecting a vertical member, the second steel bars are located right above the first steel bars, and finally a cast-in-place layer is arranged above the prefabricated slab and the vertical member, so that the second steel bars are fastened to the vertical member and the prefabricated slab to form the laminated floor. This coincide floor structure because the second reinforcing bar is located first reinforcing bar directly over, consequently when bearing vertical gravity, can direct conduction power between first reinforcing bar and the second reinforcing bar, needn't carry out the atress through the concrete dislocation to the effectual risk of avoiding the concrete fracture has improved the structural strength of coincide floor greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of the connection structure of a composite floor slab and a vertical member according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic side view of FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

figure 6 is a schematic structural view of another embodiment of the composite floor slab joining vertical member of the present invention;

fig. 7 is a partial enlarged view of fig. 6 at D.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Laminated floor slab	200	Vertical component
10	Prefabricated panel	11	Plate body
				111	Mounting groove	12	First reinforcing bar
20	Second reinforcing bar	30	Cast-in-place layer
				112	Communication port

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a composite floor slab 100 connected to vertical members 200. The vertical member 200 may be a wall, a beam, or the like, and in the fabricated building, after the prefabricated part of the composite floor slab 100 is finished in the factory, the composite floor slab is transported to the site to be connected with the vertical member 200 and cast in place to form a building structure.

In the embodiment of the present invention, the composite floor slab 100 includes:

the prefabricated slab 10 comprises a slab body 11 and a first steel bar 12 preset in the slab body 11;

the second reinforcing steel bar 20, at least part of the second reinforcing steel bar 20 is positioned right above the first reinforcing steel bar 12, part of the second reinforcing steel bar 20 is connected to the plate body 11, and the other part of the second reinforcing steel bar 20 extends out of the plate body 11; and

and a cast-in-place layer 30 provided above the prefabricated panels 10 and the vertical members 200 such that the second reinforcing bars 20 are fastened to the vertical members 200 and the prefabricated panels 10.

In the prefabricated building, the prefabricated panels 10 are prefabricated in advance at a prefabricated member manufacturing plant, and then transported to a site for assembly construction. Usually, when the mill is prefabricated, with first reinforcing bar 12 pre-buried in board body 11 to improve board body 11's structural strength, improve prefabricated plate 10's bearing capacity by a wide margin, the board body is peripheral to go out the muscle when avoiding the mill to produce simultaneously, promotes production quality and efficiency.

Specifically, the first reinforcing bars 12 and the second reinforcing bars 20 may adopt reinforcing bars of the same specification, and the first reinforcing bars 12 and the second reinforcing bars 20 may be the same in number and may be provided in plurality, and the first reinforcing bars 12 and the second reinforcing bars 20 are provided in one-to-one correspondence, so that when the prefabricated slab 10 is bearing the gravity load, the plurality of first reinforcing bars 12 and the plurality of second reinforcing bars 20 can jointly support and bear the weight, so that the structure of the laminated floor slab 30 is more stable.

The outward extending portion of the second steel bar 20 may be, specifically, a steel bar (e.g., a beam stirrup) embedded in the vertical member 200 in a lap joint manner, thereby forming a steel bar mesh, and then the steel bar mesh formed by the embedded steel bars of the vertical member 200 and the second steel bar 20 is covered and anchored by casting through the cast-in-place layer 30; or between pre-embedded steel bars (such as beam stirrups) in the vertical members 200, and then the two are stably connected through the cast-in-place layer 30.

In an embodiment of the present application, the cast-in-place layer 30 is a concrete layer, and the concrete layer is cast on site during construction, so that after the concrete layer is solidified, a portion of the second steel bar 20 is anchored to the slab body 11, and another portion (i.e., the portion extending outward) is anchored to the vertical member 200, so that the laminated floor slab 100 is integrally fixed to the vertical member 200 through the cast-in-place layer 30 and the anchored second steel bar 20 to form a stable building structure.

Therefore, in the technical scheme of the invention, during the production and construction process, the first steel bar 12 is preset in the slab body 11 of the precast slab 10, then the second steel bar 20 is partially connected to the slab body 11, the other part (i.e., the part extending outwards) is connected to the vertical member 200, the second steel bar 20 is positioned right above the first steel bar 12, and finally, the cast-in-place layer 30 is arranged above the precast slab 10 and the vertical member 200, so that the second steel bar 20 is fastened to the vertical member 200 and the precast slab 10, and the laminated floor slab 100 is formed. This coincide floor 100 structure because second reinforcing bar 20 is located first reinforcing bar 12 directly over, consequently when bearing vertical gravity, can directly just conduct power between first reinforcing bar 12 and the second reinforcing bar 20, needn't carry out the atress through the concrete dislocation to the effectual risk of avoiding the concrete fracture has improved coincide floor 100's structural strength greatly.

Referring to fig. 1 to 3, in some embodiments of the present disclosure, an installation groove 111 is recessed in an edge of the slab body 11, a portion of the second steel bar 20 is located in the installation groove 111, another portion (i.e., an outward extending portion) is located outside the installation groove 111, and the cast-in-place layer 30 is filled in the installation groove 111. Wherein, the mounting groove 111 can be molded by a mold during the process of manufacturing the plate body 11, and the mounting groove 111 is provided right above the first reinforcing bar 12 to facilitate the installation of the second reinforcing bar 20. In practical application, the part that second reinforcing bar 20 is located plate body 11 can hold in mounting groove 111, later concreting layer, makes the concrete fill in mounting groove 111 to wait that the concrete solidifies the back, with second reinforcing bar 20 anchor in mounting groove 111, from this through setting up mounting groove 111, cast-in-place layer 30 has been increased, concrete layer and plate body 11 contact and the area of solidifying promptly, make second reinforcing bar 20 be connected more stably with plate body 11, structural strength is better.

Further, in an embodiment of the present application, an inner wall of the mounting groove 111 is provided with a concave-convex structure (not shown). It can be understood that the concave-convex structure provided on the inner wall of the mounting groove 111 may be some bulges or pits, thereby increasing the roughness of the inner wall of the mounting groove 111, and therefore, when the concrete layer is filled in the mounting groove 111, the adhesive force between the concrete layer and the inner wall of the mounting groove 111 can be increased, so that the concrete layer is more firm after being solidified.

In an embodiment, the mounting groove 111 is a strip-shaped groove or a wedge-shaped groove. Due to the design of the strip-shaped grooves or the wedge-shaped grooves, on one hand, the structure is simpler, and a corresponding mold is convenient to design for processing, so that the production efficiency of the prefabrication processing of the precast slab 10 can be improved; on the other hand, the inside of BAR-shaped groove and wedge groove can not form the dead angle to can ensure that the closely knit packing of concrete layer is in mounting groove 111, further improve the stability after the concrete layer solidifies. Of course, in other embodiments, the mounting groove 111 may be an elliptical groove, a semicircular groove, or the like, so that the concrete layer can be sufficiently densely filled in the mounting groove 111.

Further, the notch of this application mounting groove 111 is the flaring setting, so sets up for the relative tank bottom broad of notch of mounting groove 111, consequently when filling the concrete in mounting groove 111, solidification in messenger's concrete injection mounting groove 111 that can be convenient.

Referring to fig. 1, in an embodiment of the present application, the number of the mounting grooves 111 is multiple, the mounting grooves 111 are uniformly spaced along the width direction of the plate body 11, and each of the mounting grooves 111 is provided with the second steel bar 20. The setting of a plurality of mounting grooves 111, when making connecting plate body 11, can be at the job site through a plurality of second reinforcing bars 20 connecting plate body 11 and vertical component 200, consequently do not need to reserve the beard muscle when the mill is prefabricated, thereby when effectually having avoided being connected with vertical component 200, with the phenomenon of reserving reinforcing bar mutual interference in vertical component 200, and simultaneously, a plurality of mounting grooves 111 cooperate a plurality of second reinforcing bars 20 to be connected prefabricated plate 10 with vertical component 200, greatly increased the holistic stability and the reliability of coincide floor 100.

Referring to fig. 4 and 5, in an embodiment of the composite floor slab 100 of the present application, the depth of the installation groove 111 is defined as H₁The thickness of the plate body 11 is H₂Then the relationship is satisfied: h₁≤0.5H₂And H₂-H₁The thickness of the edge of the plate body 11 after the installation groove 111 is arranged is still not less than 30mm, so that the edge of the plate body 11 still has enough structural strength after the installation groove 111 is arranged, the stable stress of the laminated floor slab 100 and the vertical member 200 after the connection is ensured, and the laminated floor slab accords with architectural design.

In another embodiment of the laminated floor slab 100 of the present application, the length of the second steel bar 20 in the installation groove 111 is defined as L₁The length of the second steel bar 20 outside the installation groove 111 is L₂And the outer diameter of the second steel bar 20 is D, the relationship is satisfied: l is₁≥15D、L₂Not less than 15D. So configured, it conforms to architectural design, and makes the second steel bar 20 and the pre-reinforcing barThe plate making 10 part and the vertical member 200 part have enough anchoring length, and can keep stable and firm when bearing gravity load, thereby ensuring that the mechanical property of the laminated floor slab 100 meets the requirement.

Further, referring to fig. 6 and 7, in an embodiment of the present application, a communication opening 112 is concavely formed at the bottom of the mounting groove 111, and the first steel bar 12 is exposed at the communication opening 112 and can be attached to the second steel bar 20. In practical application, first reinforcing bar 12 is pre-buried at the board body 11 back, and usable mould is sunken in the tank bottom of mounting groove 111 and is formed communication opening 112 for first reinforcing bar 12 is exposed out by communication opening 112, and when laying second reinforcing bar 20 again, can correspondingly lay second reinforcing bar 20 in the sunken position department that forms communication opening 112 of mounting groove 111, makes first reinforcing bar 12 and second reinforcing bar 20 can contact the laminating each other from this. So set up, after concreting in mounting groove 111, first reinforcing bar 12 can the anchor with second reinforcing bar 20 and combine as an organic wholely, consequently when coincide floor 100 bears vertical gravity, can bear jointly by first reinforcing bar 12 and the second reinforcing bar 20 that sets up from top to bottom and support and atress, and need not carry out indirect transmission atress through the concrete to the effectual holistic structural strength and the stability of coincide floor 100 that have improved.

In order to facilitate the second reinforcing bar 20 to be attached to the first reinforcing bar 12 after contacting with the first reinforcing bar, referring to fig. 7, the cross-sectional shape of the communication port 112 is a tapered opening with a wide top and a narrow bottom. So, make second reinforcing bar 20 part can hold in intercommunication mouth 112 to it is spacing to carry out the backstop by the lateral wall of intercommunication mouth 112, thereby makes second reinforcing bar 20 lay and can not rock easily behind mounting groove 111, and the cast in situ concrete of being convenient for more from this is favorable to improving the efficiency of production and construction.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.