CN219908950U - Foundation pit crown beam supporting assembly - Google Patents
Foundation pit crown beam supporting assembly Download PDFInfo
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- CN219908950U CN219908950U CN202320370381.7U CN202320370381U CN219908950U CN 219908950 U CN219908950 U CN 219908950U CN 202320370381 U CN202320370381 U CN 202320370381U CN 219908950 U CN219908950 U CN 219908950U
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- foundation pit
- bracing
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 62
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims description 35
- 238000005452 bending Methods 0.000 claims description 22
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 9
- 238000013459 approach Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 16
- 238000012876 topography Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Abstract
The utility model discloses a foundation pit crown beam support assembly, wherein the support assembly comprises: the diagonal bracing is arranged in the supporting space, two ends of the diagonal bracing are respectively connected with two adjacent beam bodies, diagonal bracing ribs and concrete for wrapping the diagonal bracing ribs for pouring are arranged in the diagonal bracing, and two ends of each diagonal bracing rib extend into the beam body of the crown beam and are respectively connected with the ribs of the beam bodies; and the opposite bracing is arranged in the supporting space, two ends of the opposite bracing are respectively connected with two beam bodies which are oppositely arranged on the crown beam, opposite bracing reinforcing bars and concrete which is used for wrapping the opposite bracing reinforcing bars and is poured are arranged in the opposite bracing, and two ends of the opposite bracing reinforcing bars extend into the beam bodies of the crown beam and are respectively connected with the reinforcing bars of the beam bodies. The foundation pit crown beam supporting component provided by the technical scheme of the utility model is suitable for the topography structure of the place, and has low construction cost and short construction period.
Description
Technical Field
The utility model relates to the technical field of foundation pit crown beam engineering, in particular to a foundation pit crown beam supporting assembly.
Background
In the installation of the steel bars of the crown beam system, skeleton bars are installed firstly, then frame bars are installed, and finally stirrups are installed. During construction, accurate positioning of the steel bars is ensured, positioning lines of the bottom layer steel bars are sprung on the bottom die before the steel bars are bound, binding of the steel bars is carried out according to the positioning lines, sectional construction is adopted for the crown beam, and the main steel bar joints of the steel bars should avoid the crown Liang Zhuaijiao and staggered positions.
At present, in the construction process of a foundation pit pile foundation crown beam of a subway outlet well, firstly, manually chiseling out slurry, loose concrete fragments, concrete which cannot reach the design strength and the like on a pile head, constructing the crown beam in time after the pile head is processed and inspected to be qualified, and constructing a crown beam system of a crown beam body and a supporting device thereof, the inventor finds that when a deep foundation pit is required to be excavated on the abnormal ground with complex topography and silt and sand layers, the supporting mode of the conventional foundation pit crown beam has the problems of higher manufacturing cost, longer construction period, high construction difficulty, asymmetric load and the like, so that the foundation pit crown beam supporting component is required to be put forward according to local conditions.
Disclosure of Invention
The utility model mainly aims to provide a foundation pit crown beam supporting component, which aims to solve the technical problems of high construction cost, long construction period and the like of foundation pit crown beam supporting construction on a complex unconventional bottom surface.
In order to achieve the above object, the present utility model provides a foundation pit crown beam support assembly, wherein a crown beam includes four beam bodies of reinforced concrete structure, and the four beam bodies are disposed around a foundation pit and form a supporting space, the support assembly is characterized in that:
the diagonal bracing is arranged in the supporting space, two ends of the diagonal bracing are respectively connected with two adjacent beam bodies, diagonal bracing ribs and concrete for wrapping the diagonal bracing ribs for pouring are arranged in the diagonal bracing, and two ends of each diagonal bracing rib extend into the beam body of the crown beam and are respectively connected with the ribs of the beam bodies; and
the support is arranged in the support space, two ends of the support are respectively connected with two beam bodies which are oppositely arranged on the crown beam, support reinforcing bars and concrete which is used for wrapping the support reinforcing bars and is poured are arranged in the support, and two ends of the support reinforcing bars extend into the beam body of the crown beam and are respectively connected with the reinforcing bars of the beam bodies.
Optionally, the diagonal bracing reinforcement comprises a first reinforcement, the extension direction of the first reinforcement is consistent with the extension direction of the diagonal bracing, the two ends of the first reinforcement are respectively provided with a first bending section, the first bending sections are parallel to the extension direction of the crown beam, and the first bending sections are fixedly connected with the reinforcement of the crown beam.
Optionally, the diameter of the first reinforcement bar is d, and the length of the first bending section is 15×d.
Optionally, the part that the bracing is close to both ends all is equipped with connecting portion, be equipped with the strengthening rib in the connecting portion, strengthening rib one end with first reinforcing bar is connected, and the other end extends to in the crown beam, and with the arrangement of bars of crown beam is connected.
Optionally, the reinforcing ribs are further connected with stirrups of the crown beams and are arranged in parallel with the corresponding stirrups of the crown beams.
Optionally, the reinforcing ribs in each connecting part are provided with five groups, and the lengths of the five groups of reinforcing ribs sequentially increase in the direction that one end of the diagonal brace approaches the other end.
Optionally, the support assembly further comprises a gusset, the gusset is arranged at the included angle of two adjacent beam bodies, gusset reinforcing bars are arranged in the gusset, second reinforcing bars are arranged on the gusset reinforcing bars, and two ends of the second reinforcing bars extend into the corresponding beam bodies.
Optionally, the gusset reinforcement is further provided with two groups of third reinforcing bars, one end of each group of third reinforcing bars is connected with the third reinforcing bars, the other end of each group of third reinforcing bars extends into the corresponding beam body respectively, and the two groups of third reinforcing bars are arranged in a crossing mode.
According to the technical scheme, diagonal braces and diagonal braces are arranged in a supporting space surrounded by four beam bodies of the steel bar concrete structure of the crown beam and connected with the crown beam body to support the crown beam, wherein the diagonal braces and the diagonal braces are of reinforced concrete structures, and specifically, diagonal brace reinforcing bars are arranged in the diagonal braces and extend into the beam body, and the diagonal brace reinforcing bars are arranged in the diagonal braces and extend into the beam body. The diagonal bracing is supported on two adjacent beam bodies, is symmetrically supported on two opposite beam bodies, supports the crown beam together, adopts reinforced concrete structures for diagonal bracing and diagonal bracing, is low in manufacturing cost and short in construction period, is symmetrical in load on opposite sides of a foundation pit, and is suitable for a topography structure of a place.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a foundation pit crown beam support assembly of the present utility model;
FIG. 2 is a schematic view of a diagonal bracing bar of an embodiment of a foundation pit crown beam support assembly of the present utility model;
FIG. 3 is a schematic view of the structure of a gusset reinforcement of an embodiment of the foundation pit crown beam support assembly of the present utility model;
fig. 4 is a schematic structural view of a pair of bracing ribs of an embodiment of a foundation pit crown beam support assembly according to the present utility model.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Crown beam | 310 | Supporting rib |
| 110 | Beam body | 311 | Second bending section |
| 200 | Diagonal bracing | 320 | Connecting rib |
| 210 | First reinforcing steel bar | 321 | Third bending section |
| 211 | First bending section | 400 | Corner brace |
| 220 | Reinforcing rib | 410 | Second reinforcing steel bar |
| 300 | Opposite bracing | 420 | Third reinforcing steel bar |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a foundation pit crown beam supporting component.
In the prior art, in the construction process of constructing a foundation pit pile foundation crown beam of a local subway outlet well, firstly, manually chiseling out slurry, loose concrete fragments, concrete which cannot reach the design strength and the like on a pile head, constructing the crown beam in time after the pile head is processed and inspected to be qualified, and constructing a crown beam system of a crown beam body and a supporting device thereof, the inventor finds that when a deep foundation pit is required to be excavated on the abnormal ground with complex topography and silt and sand layers, the supporting mode of the conventional foundation pit crown beam has the problems of higher cost, longer construction period, large construction difficulty, asymmetric load and the like, so that the foundation pit crown beam supporting component is required to be put forward according to local conditions.
In order to solve the technical problems, the technical scheme of the utility model is that diagonal braces and diagonal braces are connected with a crown beam body in a supporting space surrounded by the beam bodies of four steel bar concrete structures of the crown beam so as to realize the support of the crown beam, wherein the diagonal braces and the diagonal braces both adopt steel bar concrete structures, and specifically, diagonal brace reinforcing bars are arranged in the diagonal braces and extend into the beam body, and the diagonal brace reinforcing bars are arranged in the diagonal braces and extend into the beam body. The diagonal bracing is supported on two adjacent beam bodies, is symmetrically supported on two opposite beam bodies, supports the crown beam together, adopts reinforced concrete structures for diagonal bracing and diagonal bracing, is low in manufacturing cost and short in construction period, is symmetrical in load on opposite sides of a foundation pit, and is suitable for a topography structure of a place.
The above technical scheme is described in detail below with reference to the accompanying drawings.
In an embodiment of the present utility model, as shown in fig. 1 to 4, the supporting assembly of the foundation pit crown beam 100, wherein the crown beam 100 includes four beam bodies 110 of reinforced concrete structure, and the four beam bodies 110 are disposed around the foundation pit and form a supporting space, the supporting assembly includes:
the diagonal bracing 200 is arranged in the supporting space, two ends of the diagonal bracing 200 are respectively connected with two adjacent beam bodies 110, diagonal bracing 200 reinforcing bars and concrete for wrapping the diagonal bracing 200 reinforcing bars for pouring are arranged in the diagonal bracing 200, and two ends of the diagonal bracing 200 reinforcing bars extend into the beam bodies 110 of the crown beam 100 and are respectively connected with the reinforcing bars of the beam bodies 110; and
the opposite bracing 300 is arranged in the supporting space, two ends of the opposite bracing 300 are respectively connected with two beam bodies 110 oppositely arranged on the crown beam 100, the opposite bracing 300 is internally provided with reinforcing bars of the opposite bracing 300 and concrete for wrapping the reinforcing bars of the opposite bracing 300, and two ends of the reinforcing bars of the opposite bracing 300 extend into the beam bodies 110 of the crown beam 100 and are respectively connected with the reinforcing bars of the beam bodies 110.
In the concrete implementation process, in the foundation pit construction process, as shown in fig. 1, a rectangular structure foundation pit is formed through a fender post enclosure, a crown beam 100 is arranged at the top of the fender post, the crown beam 100 comprises four beam bodies 110 of a reinforced concrete structure, the space surrounded by the four beam bodies 110 is a supporting space, and a supporting component is arranged in the supporting space and plays a role in supporting the crown beam 100 so as to ensure the strength and stability of the whole foundation pit enclosure.
In this embodiment, four diagonal braces 200 are provided, two ends of each diagonal brace 200 are respectively connected with two adjacent beam bodies 110, and each diagonal brace 200 is opposite to one included angle of the crown beam 100, and the diagonal braces 200 and the beam bodies 110 form a triangle structure, so that the overall stability of the crown beam 100 is improved. In this embodiment, the pair of braces 300 is provided with one, the pair of braces 300 extends along the width direction of the crown beam 100, and both ends of the pair of braces 300 are respectively connected to the beam body 110 located on the longitudinal side of the crown beam 100. Of course, it will be understood that, in practice, a plurality of parallel diagonal braces 200 may be disposed at each included angle of the crown beam 100 according to the strength requirement, and a plurality of parallel diagonal braces 300 may be disposed between two longitudinal edges, which is not limited in this embodiment. In the concrete implementation process, the diagonal bracing 200 and the diagonal bracing 300 are of reinforced concrete structures, namely, the diagonal bracing 200 is arranged in the diagonal bracing 200 to be reinforced and concrete is poured, the diagonal bracing 300 is arranged in the diagonal bracing 300 to be reinforced and concrete is poured, the concrete strength is C30, the impervious grade is P6, and the diagonal bracing 200 and the diagonal bracing 300 are further provided with 40mm thick concrete protection layers.
As shown in fig. 4, the reinforcement of the opposite support 300 includes a support rib 310, the extending direction of the support rib 310 is consistent with that of the opposite support 300, a second bending section 311 is arranged at a part close to two ends of the support rib 310, the second bending section 311 is connected with the reinforcement of the support body, the opposite support 300 stirrup is connected around the support rib 310, and the opposite support 300 stirrup is perpendicular to the support rib 310. The cross-shaped connecting ribs 320 are further arranged between the opposite support 300 and the crown beam 100, one ends of the connecting ribs 320 close to the crown beam 100 are respectively inclined towards the direction away from each other, the parts of the connecting ribs 320 extending into the crown beam 100 are located at two opposite sides of the opposite support 300, third bending sections 321 are respectively arranged at two ends of the connecting ribs 320, and the third bending sections 321 are respectively connected with corresponding stirrups of the opposite support 300 and reinforcing steel bars of the supporting body. The diameter of the support rib is d1, the length of the second bending section 311 is 15×d1, the diameter of the connecting rib 320 is d2, and the length of the third bending section 321 is 15×d2. The support 300 is provided with a first encryption area, the length of the first encryption area is 1/3 of the span range of the support body, the stirrups of the support 300 in the first encryption area are encrypted, the support body connected with the support 300 is provided with a second encryption area, the length of the second encryption area is 1/3 of the span range of the support distance of the support 300, the support body is provided with support body stirrups, and the support body stirrups in the second encryption area are encrypted.
Further, as shown in fig. 2, the reinforcement of the diagonal brace 200 includes a first reinforcement 210, the extending direction of the first reinforcement 210 is consistent with the extending direction of the diagonal brace 200, two ends of the first reinforcement 210 are respectively provided with a first bending section 211, the first bending section 211 is parallel to the extending direction of the crown beam 100, and the first bending section 211 is fixedly connected with the reinforcement of the crown beam 100.
In the specific implementation, the connection mode of the reinforcing steel bars is strapping connection or welding, preferably welding connection, which will not be described in detail below. The cross section of the diagonal brace 200 is a square structure, and the first reinforcing steel bar 210 is provided with a plurality of bars arranged in parallel and surrounds the square structure. The first steel bar 210 is a main bar of the diagonal brace 200, the first bending section 211 is parallel to the main bar in the beam body 110 of the crown beam 100 and extends towards the other end of the beam body 110, the first bending section 211 is connected with the stirrup, and the connection strength of the first steel bar 210 and the beam body 110 of the crown beam 100 is improved. Specifically, the diameter of the first reinforcement bar 210 is d, and the length of the first bending section 211 is 15×d.
Optionally, the portions of the diagonal braces 200 near the two ends are respectively provided with a connecting portion, the connecting portions are internally provided with reinforcing ribs 220, one end of each reinforcing rib 220 is connected with the first reinforcing steel bar 210, and the other end extends into the crown beam 100 and is connected with the reinforcing ribs of the crown beam 100.
The connection portions are near both ends of the diagonal braces 200 connected to the crown beam 100, and are provided with reinforcing ribs 220 parallel to the stirrups of the crown beam 100, the reinforcing ribs 220 extending into the crown beam 100 and being connected to the stirrups of the crown beam 100. And are disposed in parallel with the stirrups of the corresponding crown beam 100. Specifically, the reinforcing ribs 220 in each connection portion are provided with five groups, and the lengths of the five groups of reinforcing ribs 220 sequentially increase in a direction in which one end of the diagonal brace 200 approaches the other end.
Optionally, the support assembly further includes a gusset 400, the gusset 400 is disposed at an included angle between two adjacent beam bodies 110, a gusset 400 reinforcement is disposed in the gusset 400, the gusset 400 reinforcement is provided with a second reinforcement 410, and two ends of the second reinforcement 410 extend into the corresponding beam bodies 110.
In the implementation process, as shown in fig. 3, the angle brace 400 is located at the included angle between two adjacent beam bodies 110, and the angle brace 400 is also in a reinforced concrete structure, specifically, the angle brace 400 is arranged in the angle brace 400, and two ends of the second reinforcing steel bar 410 extend into the two beam bodies 110 respectively and are connected with the stirrups of the crown beam 100. Concrete is poured between the beam body 110 and the wrapping second reinforcing steel bars 410, so that two sides of the gusset 400 are connected with the crown beam 100, and stability of the crown beam 100 is improved.
Further, the reinforcing bars of the angle brace 400 are further provided with two groups of third reinforcing bars 420, one end of each group of third reinforcing bars 420 is connected with the third reinforcing bar 420, the other end of each group of third reinforcing bars 420 extends into the corresponding beam body 110, and the two groups of third reinforcing bars 420 are arranged in a crossing mode. In the implementation process, one group of third reinforcing bars 420 extends to one beam body 110, the other group of third reinforcing bars 420 extends to the other beam body 110, and the two groups of third reinforcing bars 420 are arranged in a crossing manner, so that the strength of the gusset 400 is improved, and the connection strength between the gusset 400 and the crown beam 100 is further improved. Each group of third reinforcing bars 420 is provided with a plurality of third reinforcing bars, and is arranged in parallel, one end part of each third reinforcing bar is welded with the side wall of the second reinforcing bar 410, and the other end extends into the corresponding beam body 110.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (8)
1. A foundation pit crown beam support assembly, wherein, the crown beam includes four bar reinforced concrete structure's roof beam bodies, and four roof beam bodies set up and form the space of strutting around the foundation pit, its characterized in that, the support assembly includes:
the diagonal bracing is arranged in the supporting space, two ends of the diagonal bracing are respectively connected with two adjacent beam bodies, diagonal bracing ribs and concrete for wrapping the diagonal bracing ribs for pouring are arranged in the diagonal bracing, and two ends of each diagonal bracing rib extend into the beam body of the crown beam and are respectively connected with the ribs of the beam bodies; and
the support is arranged in the support space, two ends of the support are respectively connected with two beam bodies which are oppositely arranged on the crown beam, support reinforcing bars and concrete which is used for wrapping the support reinforcing bars and is poured are arranged in the support, and two ends of the support reinforcing bars extend into the beam body of the crown beam and are respectively connected with the reinforcing bars of the beam bodies.
2. The foundation pit crown beam support assembly of claim 1, wherein the diagonal bracing reinforcement comprises a first reinforcement, the extension direction of the first reinforcement is consistent with the extension direction of the diagonal bracing, the two ends of the first reinforcement are respectively provided with a first bending section, the first bending section is parallel to the extension direction of the crown beam, and the first bending section is fixedly connected with the reinforcement of the crown beam.
3. The foundation pit crown beam support assembly of claim 2, wherein the first rebar has a diameter d and the first bend has a length of 15 x d.
4. The foundation pit crown beam support assembly according to claim 2, wherein the portions of the two ends of the diagonal braces, which are close to each other, are provided with connecting portions, reinforcing ribs are arranged in the connecting portions, one ends of the reinforcing ribs are connected with the first reinforcing steel bars, and the other ends of the reinforcing ribs extend into the crown beams and are connected with reinforcing steel bars of the crown beams.
5. The foundation pit crown beam support assembly of claim 4, wherein said reinforcing bars are further connected to and disposed parallel to corresponding stirrups of said crown beams.
6. The foundation pit crown beam support assembly of claim 4, wherein said ribs in each connection portion are provided in five groups, the lengths of said five groups of ribs increasing in sequence in a direction in which one end of said diagonal brace approaches the other end.
7. The foundation pit crown beam support assembly of claim 1, further comprising a gusset, wherein the gusset is arranged at an included angle between two adjacent beam bodies, a gusset reinforcement is arranged in the gusset, a second reinforcement is arranged in the gusset reinforcement, and two ends of the second reinforcement extend into the corresponding beam bodies.
8. The foundation pit crown beam support assembly of claim 7, wherein the gusset reinforcement is further provided with two groups of third reinforcement bars, one end of each group of third reinforcement bars is connected with the third reinforcement bar, the other end of each group of third reinforcement bars extends into the corresponding beam body, and the two groups of third reinforcement bars are arranged in a crossing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370381.7U CN219908950U (en) | 2023-02-28 | 2023-02-28 | Foundation pit crown beam supporting assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320370381.7U CN219908950U (en) | 2023-02-28 | 2023-02-28 | Foundation pit crown beam supporting assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219908950U true CN219908950U (en) | 2023-10-27 |
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ID=88434454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320370381.7U Active CN219908950U (en) | 2023-02-28 | 2023-02-28 | Foundation pit crown beam supporting assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219908950U (en) |
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- 2023-02-28 CN CN202320370381.7U patent/CN219908950U/en active Active
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