CN216949090U

CN216949090U - Precast beam, superposed beam and building structure

Info

Publication number: CN216949090U
Application number: CN202122519528.8U
Authority: CN
Inventors: 初明进; 孙志娟; 初晓彤; 孙杰
Original assignee: Shandong Aike Fujian Architectural Technology Co ltd; Beijing University of Civil Engineering and Architecture
Current assignee: Shandong Aike Fujian Architectural Technology Co ltd; Beijing University of Civil Engineering and Architecture
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-07-12
Anticipated expiration: 2031-10-19

Abstract

The utility model provides a precast beam, a superposed beam and a building structure, and relates to the technical field of building structures, wherein the precast beam comprises a beam body, and the top of the beam body is downwards provided with a plurality of matching holes; the bottom of the beam body is provided with a groove; the groove corresponds to the matching hole in position and is communicated with the matching hole. In this way, the matching holes are formed in the precast beam, the bottom of the precast beam is provided with the grooves communicated with the matching holes correspondingly, the grooves enable the reinforcing steel bars of the matching holes arranged from bottom to top not to be exposed, the reinforcing steel bars do not extend out of the beam body, manufacturing is facilitated, and manufacturing process is simplified.

Description

Precast beam, superposed beam and building structure

Technical Field

The utility model relates to the technical field of building structures, in particular to a precast beam, a superposed beam and a building structure.

Background

The composite beam comprises a prefabricated part and a post-cast reinforced concrete part, the stirrup of the existing composite beam extends out of the top surface of the prefabricated part, and the formwork of the existing composite beam needs to be grooved or perforated at the position of the stirrup in the manufacturing process, so that the adverse factors of complex process, incapability of being universal and the like are caused, and the production efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a precast beam, a superposed beam and a building structure, which are used for solving the technical problems that side forms cannot be used universally and the overall stability of the building structure is not strong in the prior art.

An embodiment of the present invention provides a precast beam, including:

the beam body is provided with a plurality of matching holes downwards at the top, and the matching holes comprise a plurality of rows of matching units which are arranged at intervals along the length extension direction of the beam body;

the bottom of the beam body is provided with a groove; wherein the content of the first and second substances,

the position of the groove corresponds to the position of the matching hole and is communicated with the matching hole.

According to the precast beam, each row of the matching units comprises two hole sites which are arranged at intervals.

According to the precast beam of one embodiment of the present invention, the fitting hole includes a first fitting unit and a second fitting unit that are spaced apart side by side in a length direction of the beam body.

The embodiment of the utility model provides a superposed beam, which comprises:

the precast beam described above;

and the post-cast concrete is poured on the top of the precast beam.

The composite beam further comprises a composite beam stirrup, the initial state of the composite beam stirrup is U-shaped, and the composite beam stirrup penetrates through the matching hole upwards from the bottom of the beam body.

The composite beam further comprises connecting ribs, wherein the connecting ribs comprise a first connecting rib and a second connecting rib, and the first connecting rib and the second connecting rib are arranged side by side and penetrate through the matching holes along the length direction of the beam body.

According to the composite beam of one embodiment of the utility model, the composite beam stirrup comprises a first extension part and a second extension part;

the first and second extensions extend to the area of concrete poured on top of the beam and extend in a direction away from each other.

According to the laminated beam provided by the embodiment of the utility model, the beam body is also internally provided with the beam stirrup, and the beam stirrup surrounds the connecting rib.

An embodiment of the present invention further provides a building structure, including: the superposed beam further comprises a prefabricated plate, and the superposed beam is connected with the prefabricated plate through concrete pouring.

According to the precast beam, the superposed beam and the building structure provided by the embodiment of the utility model, the precast beam is provided with the matching hole, the bottom of the precast beam is provided with the groove correspondingly communicated with the matching hole, and the groove prevents the reinforcing steel bars penetrating the matching hole from being exposed from the bottom to the top, namely the reinforcing steel bars do not extend out of the beam body, so that the precast beam, the superposed beam and the building structure are convenient to manufacture, and the manufacturing process is simplified.

For the composite beam, the composite beam stirrup is not arranged in the prefabricated beam, so that the top of the prefabricated beam does not extend out of the composite beam stirrup, a template at the top of the prefabricated beam does not need to be provided with a hole or a groove, and the production efficiency is obviously improved; simultaneously, when need set up the roughness in order to improve precast beam and post-cast concrete's wholeness at precast beam top, precast beam top does not set up the coincide beam stirrup, avoids among the prior art coincide beam stirrup to disturb the preparation roughness. The superposed beam stirrup penetrates through the matching hole from the bottom in a U-shaped mode, then two limbs of the U-shaped stirrup bend oppositely at the top of the superposed beam to form the connecting beam stirrup, so that no reinforcement is produced on the prefabricated beam, and the U-shaped reinforcement wraps the connecting reinforcement. After the U-shaped ribs are arranged, the formwork is installed in the groove area at the bottom of the precast beam, concrete is poured at the top of the precast beam, and the groove area is filled with the concrete through the matching holes.

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 embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a composite beam according to the present invention;

FIG. 2 is a schematic structural view of another embodiment of the composite beam shown in FIG. 1;

FIG. 3 is a cross-sectional view of the composite beam shown in FIG. 1 taken along the length thereof;

FIG. 4 is a cross-sectional view of the composite beam shown in FIG. 1 with the composite beam stirrup in the length direction;

fig. 5 is a schematic structural diagram of another embodiment of a composite beam according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of the composite beam of FIG. 5 in a lengthwise direction;

FIG. 7 is a cross-sectional view of the composite beam shown in FIG. 5 with the composite beam stirrup in the length direction;

fig. 8 is a schematic structural view of a laminated beam according to a third embodiment of the present invention;

FIG. 9 is a cross-sectional view of the composite beam shown in FIG. 8 in a lengthwise direction;

FIG. 10 is a cross-sectional view of the composite beam shown in FIG. 8 at another location along its length;

FIG. 11 is a cross-sectional view of the composite beam of FIG. 8 with the composite beam stirrup in the length direction;

fig. 12 is a schematic structural view of a laminated beam according to a fourth embodiment of the present invention;

FIG. 13 is a cross-sectional view of the composite beam of FIG. 12 in the lengthwise direction;

FIG. 14 is a cross-sectional view of the composite beam shown in FIG. 12 with the composite beam stirrup in the length direction;

FIG. 15 is a schematic structural view of the composite girder and the prefabricated panels of the non-architectural concrete of the construction structure according to the embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view of a building structure after placement of concrete;

FIG. 17 is a schematic cross-sectional view of another location of the building structure after placement of concrete;

FIG. 18 is a schematic cross-sectional view of another position of the precast panels of the building structure after pouring concrete;

FIG. 19 is a schematic view of a building structure with insulation;

FIG. 20 is a structural schematic view of a section of FIG. 19;

FIG. 21 is a schematic structural view of the cross-section of FIG. 19 at another location;

reference numerals:

10. a beam body; 110. a mating hole; 1110. a fitting unit; 1120. a first fitting unit; 1130. a second fitting unit; 120. a beam stirrup; 130. a groove;

20. connecting ribs; 210. a first connecting rib; 220. a second connecting rib;

30. a beam stirrup is overlapped; 310. a first extension portion; 320. a second extension portion;

40. concrete; 410. a beam longitudinal bar;

50. prefabricating a slab;

60. and (7) an insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

The precast girders, the laminated girders, and the building structure according to the embodiment of the present invention will be described with reference to fig. 1 to 21.

The composite beam includes precast beams and post-cast concrete 40. The precast beam includes a beam body 10, and referring to fig. 1 and 2, a mating hole 110 is formed downward at the top of the beam body 10, a groove 130 is formed at the bottom of the beam body 10, and the groove 130 corresponds to the mating hole 110 one by one and is communicated with the mating hole 110.

The connecting rib 20 is provided at the bottom of the beam body 10, and in some embodiments of the present invention, the connecting rib 20 includes a first connecting rib 210 and a second connecting rib 220, and the first connecting rib 210 and the second connecting rib 220 extend along the length direction of the beam body 10 at one side of the beam body 10 to the other side and both pass through the fitting hole 110. In other possible embodiments, the number of the connecting ribs 20 is not limited to two, and may also be three, four, etc., and is not limited herein. The ends of the connecting ribs 20 may extend out of the beam body 10, or other cases, but are not limited thereto.

Referring to fig. 3 and 4, further, concrete 40 (refer to fig. 16 to 18 in particular) is poured on top of the beam 10, and the concrete 40 is filled in the mating hole 110 and the groove 130. The composite beam stirrup 30 penetrates through the matching hole 110 upwards through the groove 130 at the bottom of the beam body 10, and the composite beam stirrup 30 is arranged in a U shape in an initial state and wraps the connecting rib 20 to extend towards the area of the concrete 40 poured at the top of the beam body 10; namely, the initial state of the stirrup 30 of the composite beam is U-shaped, and two limbs of the U-shaped stirrup respectively pass through the matching holes 110 from the bottom of the precast beam and extend into the area of the concrete 40, and then are bent and overlapped oppositely to form a closed stirrup. The connecting rib 20 can provide a support for the composite beam stirrup 30, and form a steel reinforcement framework with the composite beam stirrup 30, so that the composite beam stirrup 30 can be conveniently arranged in the matching hole 110 in a penetrating manner, the connection stability between the beam body 10 and the concrete 40 is further improved when the concrete 40 is post-cast, and particularly the shear-resistant bearing capacity of the composite beam is provided. Moreover, since the position of the groove 130 corresponds to the position of the mating hole 110, the composite beam stirrup 30 does not protrude from the bottom of the beam body 10, i.e., the lower portion of the composite beam stirrup 30 is hidden in the groove 130, i.e., the bottom of the beam body 10 does not protrude partially.

Referring to fig. 4, for the composite beam stirrup 30, the composite beam stirrup 30 includes a first extension portion 310 and a second extension portion 320, the composite beam stirrup 30 is U-shaped in an initial state, and the U-shaped first extension portion 310 and the U-shaped second extension portion 320 pass through the matching hole 110, extend to the concrete 40 area poured on the top of the beam body 10, and are bent, extended and overlapped oppositely to form a closed stirrup. The thus-laminated beam stirrups 30 make the connection between the beam body 10 and the post-cast concrete 40 more secure and provide the shear-resistant bearing capacity of the laminated beam.

Further, a beam longitudinal bar 410 is further arranged in the area of the concrete 40 poured on the top of the beam body 10, and the superposed beam stirrup 30 is arranged to surround the beam longitudinal bar 410. That is, the overlapped beam stirrup 30, the beam longitudinal bar 410 in the post-cast concrete 40 and the connecting bar 20 in the matching hole 110 are all wrapped, so that the beam body 10 and the post-cast concrete 40 are more stable in connection after the area part is poured.

Referring to fig. 1 and 2, in some embodiments of the present invention, the engaging hole 110 includes a plurality of rows of engaging units 1110 along the length direction of the beam 10, and the engaging units 1110 are spaced apart from each other. Further, each row of the matching units 1110 comprises two hole sites arranged at intervals, and the grooves 130 correspond to the matching holes 110 in number one to one. It should be noted that the matching units 1110 may be circular, oval, square, etc., and are not limited herein, and each row of matching units 1110 is correspondingly disposed along the length direction of the beam 10. The adjacent rows of the matching units 1110 are spaced from each other, so that the overall weight of the beam 10 is reduced, and the structural rigidity of the beam 10 is ensured.

For the laminated beam stirrups 30, each of the laminated beam stirrups 30 may be disposed through two holes of each row and extended to the post-cast concrete 40 region, while wrapping the first and second tie bars 210 and 220 at the bottom of the mating hole 110. It should be noted that, each row of the fitting units 1110 may be provided with a plurality of superposed beam stirrups 30 arranged side by side, so as to improve the connection stability of the post-cast concrete 40 and the beam body 10.

In other possible embodiments, referring to fig. 5 to 7, there may be one hole in each row of the matching units 1110; the number of the grooves 130 at the bottom of the beam 10 may be 1, or may be several at intervals. That is, the first and

second extensions

310 and 320 of the laminated beam stirrup 30 are bent after passing through the first and second

fitting units

1120 and 1130 to form a closed stirrup. The two rear ends of the superposed beam stirrup 30, which surround the connecting bar 20, extend to the rear pouring concrete 40 area at the top of the beam body 10 respectively.

That is, the matching hole 110 includes a first matching unit 1120 and a second matching unit 1130 arranged along the length direction of the beam 10 at an interval side by side, the first connecting rib 210 is inserted into the first matching unit 1120, and the second connecting rib 220 is inserted into the second matching unit 1130. That is, two rows of the engaging holes 110 are disposed along the extending direction of the beam 10, so that the first connecting rib 210 and the second connecting rib 220 can be conveniently inserted into one of the engaging holes. It should be noted that, a plurality of the laminated beam stirrups 30 may be arranged side by side along the length extending direction of the first mating unit 1120 and the second mating unit 1130, and the laminated beam stirrups 30 are inserted through the first mating unit 1120 and the second mating unit 1130 and surround the connecting rib 20 at the bottom of the mating hole 110. Further, the first and

second extensions

310 and 320 of the laminated beam stirrup 30 may further extend to the area of the post-cast concrete 40, thus further improving the connection stability between the beam body 10 and the post-cast concrete 40.

Referring to fig. 8 to 11, fig. 9 is a cross-sectional view of fig. 8 at a position of the mating holes 110, fig. 10 is a cross-sectional view of fig. 8 at a position between the mating holes 110, and fig. 11 is a structural schematic view of an embodiment of the first extension portion 310 and the second extension portion 320. In other possible embodiments, the fitting hole 110 may be provided in an H-shape, and a plurality of support portions are formed inside, and the support portions are integrally provided with the beam body 10. For the laminated beam stirrup 30, the connecting rib 20 may be disposed to surround the mating hole 110 in the extending direction, and in order to further improve the connection stability with the post-cast concrete 40 region, the first extending portion 310 and the second extending portion 320 of the laminated beam stirrup 30 may further extend to the inside of the post-cast concrete 40 region. Meanwhile, the longitudinal beam rib 410 may be provided in the area of the post-cast concrete 40 such that the first and

second extensions

310 and 320 surround the longitudinal beam rib 410. The longitudinal beam ribs 410 extend in the same direction as the longitudinal direction of the beam body 10.

In still other embodiments of the present invention, referring to fig. 12 to 14, a plurality of matching holes 110 may be formed at intervals along the length direction of the beam 10, and each matching hole 110 is further provided with a laminated beam stirrup 30, so as to improve the connection stability between the beam 10 and the post-cast concrete 40 and provide the shear-resistant bearing capacity.

Referring to fig. 15 to 21, an embodiment of the present invention further provides a building structure, which includes the precast girders and the formed composite girders, and further includes precast slabs 50, and the composite girders and the precast slabs 50 are cast and connected by post-cast concrete 40.

Referring to fig. 15 to 17, fig. 15 and 16 are cross-sectional views of the mating holes 110, and fig. 17 is a cross-sectional view between the mating holes 110. For the laminated beam stirrup 30, the laminated beam stirrup 30 may surround the tie bar 20 and extend to the post-cast concrete 40 area above the precast slab 50 at both ends. Fig. 15 shows a state where the initial state of the laminated beam stirrup 30 is U-shaped and the first and

second extension parts

310 and 320 of the laminated beam stirrup 30 pass through the first and second

fitting units

1120 and 1130, respectively, and extend into the area of the post-cast concrete 40 after the precast beam is installed in place; fig. 16 shows a state in which the first extension 310 and the second extension 320 of the laminated beam stirrup 30 are folded and overlapped to form a stirrup, and concrete 40 is poured. After the first extension part 310 and the second extension part 320 of the composite beam stirrup 30 are oppositely bent and overlapped to form a stirrup, the stirrup can be further extended into a floor slab area and a composite beam area formed by the precast slabs 50 and the post-cast concrete 40, and a certain length is extended to serve as a reinforcing steel bar for resisting negative bending moment at the top of the composite beam; the stirrup 30 of the composite beam can not only be used as a shear-resistant bearing capacity for the composite beam, but also be used as a negative bending moment reinforcing steel bar of a support of a composite slab formed by the precast slabs 50 and the upper poured concrete 40, so as to provide a bending-resistant bearing capacity.

Further, in order to further improve the structural strength of the beam body 10 itself, a beam stirrup 120 may be disposed inside the beam body 10 to improve the strength of the beam body 10 itself.

Referring to fig. 18, in some embodiments of the present invention, the precast slab 50 may be disposed on a single side of the precast beam, and in other possible embodiments, the precast slab 50 may be disposed on both sides of the precast beam, which are disposed opposite to each other, and not limited thereto. Referring to fig. 19, the side of the beam 10 may be further provided with an insulating layer 60, and a side of the beam 10 facing the insulating layer 60 may be provided with a matching hole 110. In practical implementation, a slot may be formed in an end surface of the beam 10 facing the end surface where the insulating layer 60 is to be installed as one side of the fitting unit 1110, and the slot is simpler than the hole forming process, thereby simplifying the process. Referring to fig. 20 and 21, fig. 20 is a cross-sectional view of the mating hole 110 after the concrete 40 is poured, and fig. 21 is a cross-sectional view of the area outside the mating hole 110 after the concrete 40 is poured.

In the above embodiment, the distance between the fitting holes 110 may be the distance between the overlapped beam stirrups in the relevant specifications of the building structure, that is, the dimension of the area between the fitting holes 110 along the longitudinal direction of the beam is the distance between the overlapped beam stirrups 30 in the relevant specifications of the building structure, so that the distance between the overlapped beam stirrups 30 meets the specifications.

In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A precast beam characterized by comprising:

the beam body is provided with a plurality of matching holes downwards at the top, the matching holes comprise a plurality of rows of matching units along the length extending direction of the beam body, and the matching units are arranged at intervals;

2. The precast beam according to claim 1, wherein each row of the fitting units includes two hole sites arranged at intervals.

3. The precast beam according to claim 1, wherein the fitting hole includes a first fitting unit and a second fitting unit that are spaced side by side in a length direction of the beam body.

4. A composite beam, comprising:

the precast beam of any one of claims 1 to 3;

and the post-cast concrete is poured on the top of the precast beam.

5. The composite beam defined in claim 4, further comprising a composite beam stirrup, wherein the composite beam stirrup is U-shaped in an initial configuration, and wherein the composite beam stirrup extends upwardly through the mating hole through the bottom of the beam body.

6. The composite beam as claimed in claim 5, further comprising a connecting rib, wherein the connecting rib comprises a first connecting rib and a second connecting rib, and the first connecting rib and the second connecting rib are arranged side by side and penetrate through the matching hole along the length direction of the beam body.

7. The composite beam defined in claim 6, wherein the composite beam stirrup includes a first extension and a second extension;

8. The composite beam defined in claim 6, wherein a beam stirrup is further provided in the beam body, the beam stirrup surrounding the connecting rib.

9. A building structure, comprising: the composite beam of any one of claims 4-8;

the prefabricated slab is characterized by further comprising a prefabricated slab, and the superposed beam is connected with the prefabricated slab through concrete pouring.