CN214695649U

CN214695649U - Deep foundation pit supporting structure

Info

Publication number: CN214695649U
Application number: CN202120631149.5U
Authority: CN
Inventors: 赵正龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-11-12
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses a deep foundation pit supporting structure, which comprises a plurality of supporting parts which are stacked in sequence; the supporting part comprises a hollow filling surrounding frame and a prefabricated supporting component connected to the hollow filling surrounding frame, and the prefabricated supporting component comprises an arc-shaped supporting part and a butt joint connecting piece; the butt joint connecting piece comprises a connecting groove and a connecting lug matched with the connecting groove, and the connecting groove are respectively arranged on two sides of the arc-shaped supporting part. The utility model discloses a change supporting construction's component, improve deep basal pit supporting construction's flexibility, when guaranteeing deep basal pit's support performance, effectively improve deep basal pit supporting construction's efficiency of construction.

Description

Deep foundation pit supporting structure

Technical Field

The utility model belongs to the technical field of basic building, concretely relates to deep basal pit supporting construction.

Background

With the rapid development of national economy, the national city construction has faster and faster propulsion speed, the building engineering technology has rapid development, and the expansion application of underground space is also greatly developed; in particular to the construction of high-rise buildings, which all put new requirements on the excavation of foundation pits.

In the prior art, the traditional deep foundation pit support mainly adopts a common support structure and construction method such as a bored pile-row maintenance wall, an underground continuous wall, a steel sheet pile or a gravity type maintenance wall. For a deep foundation pit with a slightly poor geological condition and a large span, the method needs to arrange the transverse inner support as a horizontal transverse support, but the arrangement of the inner support for the deep foundation pit can reduce the construction space in the foundation pit, large-scale construction equipment is difficult to construct in a large area, and the construction cost and the construction period are increased. In addition, due to the limitation of field conditions, large machines cannot be effectively unfolded and applied in a limited space, so that the construction period is increased finally, and the construction cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a deep basal pit supporting construction through the component that changes supporting construction, improves deep basal pit supporting construction's flexibility, when guaranteeing deep basal pit's the support performance, effectively improves deep basal pit supporting construction's efficiency of construction.

In order to realize the above purpose, the utility model discloses a technical scheme specifically be:

a deep foundation pit supporting structure comprises a plurality of supporting pieces which are stacked in sequence; the supporting part comprises a hollow filling surrounding frame and a prefabricated supporting component connected to the hollow filling surrounding frame, and the prefabricated supporting component comprises an arc-shaped supporting part and a butt joint connecting piece; the butt joint connecting piece comprises a connecting groove and a connecting lug matched with the connecting groove, and the connecting groove are respectively arranged on two sides of the arc-shaped supporting part.

Furthermore, the bottom of the connecting groove is provided with a limiting step.

Furthermore, the hollow filling enclosure frame comprises a top plate, a bottom plate and side plates, the top plate, the bottom plate and the side plates are sequentially connected with one another to form a closed enclosure frame, and the top plate and the bottom plate are respectively provided with a through injection channel.

Furthermore, a plurality of supporting steel bar columns are connected between the top plate and the bottom plate.

Further, the arc-shaped supporting part is embedded with support steel bars, the top of the arc-shaped supporting part is provided with an inwards concave connecting hole, and the bottom of the arc-shaped supporting part is provided with an upper connecting piece and a lower connecting piece which are matched with the connecting hole.

Further, the connecting hole is a cross hole.

Compared with the prior art, the utility model has the advantages of: first, the utility model discloses a prefab can carry out preliminary test and design inside the mill as main component, carries out quick installation after reacing the scene.

Secondly, the utility model discloses a supporting member of the same race piles up in proper order and forms continuous wall body, and the replaceable performance of supporting member is strong on the one hand, appears single spare part dislocation or damage in the installation, can carry out effectual direct replacement, can give effectively to avoid hindering the time limit for a project because of the work piece problem.

Finally, the utility model discloses a mode that piles up can be applicable to deep basal pit or super deep basal pit to can carry out effectual direction of height's regulation at the scene according to the design height, and through horizontal piling up the arc supporting part in succession, effectively strengthen horizontal rigidity, and it is little to execute the required area of exhibition.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is the utility model provides a deep basal pit supporting construction's schematic structure.

Fig. 2 is the utility model provides a deep basal pit supporting construction's structural schematic diagram two.

Reference numerals: 1-supporting piece, 2-prefabricated supporting component, 3-hollow filling enclosing frame, 4-connecting projection, 5-arc supporting portion, 6-cross hole and 7-connecting recessed groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

As shown in fig. 1 to 2, a deep foundation pit supporting structure includes a plurality of supporting members 1 stacked in sequence; the supporting part 1 comprises a hollow filling surrounding frame 3 and a prefabricated supporting component 2 connected to the hollow filling surrounding frame 3, and the prefabricated supporting component 2 comprises an arc-shaped supporting part 5 and a butt joint connecting piece; the butt joint connecting piece comprises a connecting groove 7 and a connecting lug 4 matched with the connecting groove 7, and the connecting groove 7 are respectively arranged on two sides of the arc-shaped supporting part 5.

Compared with the prior art, the utility model discloses a mode that piles up forms continuous wall body to can highly be applicable to the foundation ditch of the different degree of depth according to the design, adaptability is stronger. Particularly, the utility model discloses a cut apart into the fritter of a plurality of difference with the underground continuous pile wall of conventional art, prefabricated supporting component 2 in the mill, every hollow packing encloses the position of depositing that contains two at least prefabricated supporting component 2 in the frame 3 to will constitute complete standard support 1. After the simple stacking of the supporting pieces 1 is needed, the mechanical energy is quickly connected through the butt joint connecting pieces, and finally concrete is poured into the hollow filling surrounding frame 3 after the stacking is completed, so that the continuous wall can be quickly formed, and the whole process is simple. In order to reinforce the rigidity of the continuous wall, concrete piles may be finally filled in each of the arc-shaped supporting parts 5, thereby finally forming a continuous underground pile wall.

The bottom of the connecting groove 7 is provided with a limiting step. Avoid connecting the dislocation through spacing step, connect lug 4 and insert behind connecting groove 7, rely on the dead weight of whole prefabricated supporting component 2 to accomplish the joint and target in place, spacing step can prevent to connect lug 4 roll-off connecting groove 7.

The hollow filling enclosure frame 3 comprises a top plate, a bottom plate and side plates, the top plate, the bottom plate and the side plates are sequentially connected with one another to form a closed enclosure frame, and through injection channels are respectively arranged on the top plate and the bottom plate. The top plate, the bottom plate and the side plates are mainly made of steel plates, and then a plurality of supporting steel bar columns are connected between the top plate and the bottom plate. After one layer or a plurality of layers are stacked, concrete needs to be poured into the hollow filling enclosure frame 3, and the continuity of each injection channel needs to be kept in the stacking process, so that the injection of vacant sites is avoided.

The arc supporting part 5 is embedded with a support steel bar, the top of the arc supporting part 5 is provided with an inwards concave connecting hole, and the bottom of the arc supporting part 5 is provided with an upper connecting piece and a lower connecting piece which are matched with the connecting hole. The connecting hole is a cross hole 6.

During actual use, in the excavation process of the deep foundation pit, the stable period and the maximum unsupported length of the surrounding rock need to be calculated, the excavation times and the excavation depth of each time need to be designed, and the excavation safe depth and the excavation safe length of the deep foundation pit and the safe time for completing supporting need to be ensured. After one-time excavation is finished, the supporting pieces 1 are laid and stacked, and in the stacking process, the supporting pieces 1 at the bottommost layer are preferentially stacked to form a continuous wall bottom.

In the stacking process, the prefabricated supporting component 2 and the hollow filling enclosure frame 3 are simply assembled after being transported to the site, and the prefabricated supporting component 2 is fixed to the corresponding mounting position of the hollow filling enclosure frame 3 because the previous manufacturing process is mainly completed in a factory. When laying, adjacent supporting member 1 only needs can accomplish through simple grafting cooperation, and the unit mount is simple, and maneuverability is strong then piling up of direction of height, and adjacent supporting member 1 aligns about mainly needing to pay attention to piling up of direction of height, guarantees through the connecting hole of arc supporting part 5 and upper and lower connecting piece, avoids piling up the dislocation, causes the incompleteness of diaphragm wall. And after the concrete is stacked to a certain height, pouring concrete into the hollow filling enclosure frame 3 to finish the laying of the underground continuous wall. Can lay fast in stable period, guarantee construction safety, and efficient. And repeating the working sequence of excavating the second or more layers of soil according to the procedures. After the excavation is finished, underground piles can be driven into the arc-shaped supporting parts 5 of the final underground continuous wall to form an underground continuous pile wall, so that permanent protection is formed, and the protection capability of the deep foundation pit is effectively improved.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 in the embodiments of the present application.

Claims

1. The utility model provides a deep basal pit supporting construction which characterized in that: comprising a plurality of supports (1) stacked one above the other; the supporting piece (1) comprises a hollow filling surrounding frame (3) and a prefabricated supporting component (2) connected to the hollow filling surrounding frame (3), and the prefabricated supporting component (2) comprises an arc-shaped supporting part (5) and a butt joint connecting piece; the butt joint connecting piece comprises a connecting groove (7) and a connecting lug (4) matched with the connecting groove (7), and the connecting groove (7) are respectively arranged on two sides of the arc-shaped supporting part (5).

2. The deep foundation pit supporting structure according to claim 1, wherein: and the bottom of the connecting groove (7) is provided with a limiting step.

3. The deep foundation pit supporting structure according to claim 1, wherein: the hollow filling enclosure frame (3) comprises a top plate, a bottom plate and side plates, the top plate, the bottom plate and the side plates are sequentially connected with one another to form a closed enclosure frame, and through injection channels are respectively arranged on the top plate and the bottom plate.

4. The deep foundation pit supporting structure according to claim 3, wherein: and a plurality of supporting steel bar columns are connected between the top plate and the bottom plate.

5. The deep foundation pit supporting structure according to claim 1, wherein: the support steel bars are embedded in the arc-shaped supporting portion (5), the concave connecting holes are formed in the top of the arc-shaped supporting portion (5), and upper and lower connecting pieces matched with the connecting holes are arranged at the bottom of the arc-shaped supporting portion (5).

6. The deep foundation pit supporting structure of claim 5, wherein: the connecting hole is a cross hole (6).