CN218990240U - Side mold system at deep pit of foundation slab - Google Patents

Abstract

The utility model discloses a side mold system at a pit of a foundation slab, which comprises the foundation slab, wherein the foundation slab is positioned above natural soil, a brick molding bed is arranged at the top of one side of the natural soil, foundation steel bars are fixedly connected in the brick molding bed, a brick molding bed is fixedly connected at the top of the brick molding bed, a plurality of constructional columns distributed at equal intervals are arranged in the brick molding bed, a ring beam which is horizontally arranged is fixedly connected at the top of the brick molding bed, the ring beam is perpendicular to the constructional columns, ring beam reinforcement bars are arranged on the ring beam, and the brick molding bed is connected with engineering piles at the top of the brick molding bed through ring beam and engineering pile connection steel bars. According to the utility model, the original engineering pile is used as a drawknot fulcrum of the brick moulding bed, and the original cushion concrete is used as a cementing material, so that the stress mode of the brick moulding bed overhanging from the upper end is changed into the upper end simple support, the bearing capacity of the side mould is greatly improved, the lateral movement of the brick moulding bed is effectively controlled, the cost and the construction period are saved, and the safety of the brick moulding bed is improved.

Description

Side mold system at deep pit of foundation slab

Technical Field

The utility model relates to the field of foundation slab deep foundation pit side form support construction, in particular to a side form system at a foundation slab deep pit.

Background

According to the method, improvement is carried out under the prior art, in the prior art, along with development of super high-rise buildings, more and more super high-rise building foundation forms adopt a piled raft foundation, the piled raft foundation is often required to be lowered by the existence of an elevator foundation pit or a core tube, a pit area exists in a whole raft area, and thus construction of a pit area side mold becomes a difficulty. The traditional wood template system is adopted, a large area needs to be excavated, the template can be disassembled after the casting of the pit area is completed, the template is backfilled, and finally raft construction except for the pit area is carried out, so that the cost is increased, and the construction period is wasted. The top end of the traditional brick moulding bed system is not reliably tied, so that the building height of the brick moulding bed is limited, if the building height is increased, the thickness of the brick moulding bed is increased, and the cost is wasted and the safety of the brick moulding bed is reduced.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a side mold system at a deep pit of a foundation slab.

In order to achieve the above purpose, the utility model provides a foundation slab pit side mold system, which comprises a foundation slab, wherein the foundation slab is positioned above natural soil, a brick molding bed is arranged at the top of one side of the natural soil, foundation steel bars are fixedly connected in the brick molding bed, a brick molding bed is fixedly connected at the top of the brick molding bed, a plurality of constructional columns distributed at equal intervals are arranged in the brick molding bed, a ring beam which is horizontally arranged is fixedly connected at the top of the brick molding bed, the ring beam is vertical to the constructional columns, ring beam reinforcement bars are arranged on the ring beam, and the brick molding bed is connected with engineering piles at the top of the brick molding bed through ring beam and engineering pile connection steel bars.

In a preferred embodiment, the ring beam and the engineering pile connecting steel bar are shaped like a Chinese character 'ji', one end of the ring beam and the engineering pile connecting steel bar is sleeved on the outer wall of the engineering pile, and the other end of the ring beam and the engineering pile connecting steel bar is anchored with the ring beam.

In a preferred embodiment, backfill material is filled between the brick bed mould and the natural soil, the thickness of the brick bed mould being greater than 200mm.

In a preferred embodiment, a raft cushion layer is arranged between natural soil and the foundation slab, the ring beams and the engineering pile connecting steel bars are positioned in the raft cushion layer, the thickness of the raft cushion layer is greater than 15mm, and the distance between the edges of the raft cushion layer and the outer sides of the engineering piles is greater than 300mm.

In a preferred embodiment, the constructional column is provided with constructional column reinforcing bars, and the bottom ends of the constructional column reinforcing bars are fixedly connected with the foundation reinforcing bars.

In a preferred embodiment, a plurality of equally distributed constructional columns and wall connecting ribs are arranged in the brick moulding bed, and the constructional columns and wall connecting ribs are fixedly connected with constructional column reinforcing bars.

In a preferred embodiment, the pitch of the constructional columns is less than 4000mm.

The utility model has the following beneficial effects:

1. according to the utility model, the original engineering pile is used as a drawknot fulcrum of the brick moulding bed, and the original cushion concrete is used as a cementing material, so that the stress mode of the brick moulding bed overhanging from the upper end is changed into the upper end simple support, the bearing capacity of the side mould is greatly improved, the lateral movement of the brick moulding bed is effectively controlled, the cost and the construction period are saved, and the safety of the brick moulding bed is improved.

2. The utility model greatly improves the safety and the bearing capacity of the brick moulding bed by adding a small amount of connecting reinforcing steel bars, and has obvious economic benefit.

Drawings

FIG. 1 is a top view of a side mold system at a foundation slab pit of the present utility model;

FIG. 2 is a cross-sectional view of a side mold system at a foundation slab pit of the present utility model;

FIG. 3 is a right side view of a side mold system at a foundation slab pit of the present utility model;

FIG. 4 is a schematic diagram of the column reinforcement installation of the foundation slab pit side mold system of the present utility model;

FIG. 5 is a schematic view of the installation of a brick bed mould of the side mould system at the pit of the foundation slab of the present utility model.

Reference numerals illustrate:

engineering pile 1, ring beam 2, ring Liang Peijin 21, constructional column 3, constructional column reinforcing bar 31, ring beam and engineering pile connecting reinforcing bar 4, raft cushion 5, backfill material 6, brick bed-jig 7, constructional column and wall connecting bar 71, brick bed-jig foundation 8, foundation reinforcing bar 81, natural soil 9 and foundation slab 10.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1-5, the foundation slab pit side mold system comprises a foundation slab 10, wherein the foundation slab 10 is positioned above natural soil 9, a brick molding bed 8 is arranged at the top of one side of the natural soil 9, and foundation steel bars 81 are fixedly connected in the brick molding bed 8. The top of the brick bed-jig foundation 8 is fixedly connected with a brick bed-jig 7, and a plurality of constructional columns 3 which are distributed at equal intervals are arranged in the brick bed-jig 7. The top of the brick bed die 7 is fixedly connected with a ring beam 2 which is horizontally arranged, the ring beam 2 is vertical to the constructional column 3, and ring beam reinforcing bars 21 are arranged on the ring beam 2. The utility model discloses a foundation slab pit side mould, which is characterized in that a plurality of engineering piles 1 are arranged on natural soil 9, wherein the engineering piles 1 are distributed at equal intervals, a brick bed mould 7 with ring beams 2 and constructional columns 3 is adopted for a side mould of a foundation slab pit, and the brick bed mould 7 is reliably connected with the engineering piles 1 at the top of the brick bed mould 7 through ring beams and engineering pile connecting steel bars 4. The connection mode changes the stress mode of the brick bed die 7 overhanging from the upper end into the upper end simple support through the reliable connection of the top ring beam 2 and the engineering pile 1, so that the bearing capacity of the side die is improved.

Further, the thickness of the brick molding bed 7, the ring Liang Peijin, the constructional column reinforcing bars 31, the space between the constructional columns 3 and the constructional column and wall connecting bars 71 should meet the stress and the constructional requirements.

Furthermore, one end of the ring beam and the engineering pile connecting steel bar 4 is made into a hoop which is sleeved on the engineering pile, and the other end is anchored to the ring beam 2, and the anchoring length is not smaller than the construction requirement.

Furthermore, the ring beams and the engineering pile connecting steel bars 4 need to be poured into the raft cushions 5. In order to ensure good connection performance of the ring beam and the engineering pile connecting steel bars 4, the distance between the outer surface of the steel bar skin and the inner surface of the cushion layer 5 is at least 15mm, the pouring range of the cushion layer ensures that the ring beam and the engineering pile connecting steel bars 4 can be completely covered, and the distance between the edge of the cushion layer 5 and the outer side of the tie-down engineering pile 1 is at least 300mm.

In this embodiment, the thickness of the brick molding 7 is not preferably less than 200mm.

In this embodiment, the column 3 spacing is typically no greater than 4000mm.

The construction steps of the side mold system at the deep pit of the foundation slab are as follows:

firstly, constructing a brick moulding bed foundation 8 after the side mould side slope earthwork excavation is completed;

step two, constructing the brick moulding bed 7 after the brick moulding bed foundation 8 is finished, and building the brick moulding bed 7 along the height in a plurality of times, wherein the building time is not more than 2 m;

thirdly, after each masonry is completed, backfilling and tamping are carried out on a gap between the rear of the brick moulding bed 7 and natural soil 9 by using a proper backfilling material 6;

fourthly, after the brick moulding bed 7 wall body is built, the construction of the top ring beam 2 is carried out, and attention needs to be paid to the fact that one end of the ring beam and the engineering pile connecting steel bar 4 is sleeved on the adjacent engineering pile 1 before the ring beam is poured, and the other end of the ring beam and the engineering pile connecting steel bar 4 is anchored on the ring beam 2;

and fifthly, pouring a concrete cushion layer between the engineering pile 1 and the ring beam 2.

It should be noted that, the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiment, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, and any modifications, equivalents, improvements or changes thereof may be made without departing from the spirit and principle of the present utility model.

Claims (7)

1. The utility model provides a foundation base plate pit department side form system, includes foundation base plate (10), its characterized in that: the foundation slab (10) is located the top of natural soil (9), one side top of natural soil (9) is provided with brick bed-jig basis (8), fixedly connected with foundation bar (81) in brick bed-jig basis (8), the top fixedly connected with brick bed-jig (7) of brick bed-jig basis (8), install constructional column (3) that a plurality of equidistance distribute in brick bed-jig (7), the top fixedly connected with of brick bed-jig (7) circle roof beam (2) that the level set up, just circle roof beam (2) with constructional column (3) are mutually perpendicular, be provided with circle roof beam arrangement of reinforcement (21) on circle roof beam (2), brick bed-jig (7) are connected with engineering pile (1) at brick bed-jig (7) top through circle roof beam and engineering pile connecting bar (4).

2. The foundation slab pit side mold system of claim 1, wherein: the ring beam and engineering pile connecting steel bar (4) are in a shape like a Chinese character 'ji', one end of the ring beam and engineering pile connecting steel bar (4) is sleeved on the outer wall of the engineering pile (1), and the other end of the ring beam and engineering pile connecting steel bar (4) is anchored with the ring beam (2).

3. The foundation slab pit side mold system of claim 2, wherein: backfill material (6) is filled between the brick moulding bed (7) and natural soil (9), and the thickness of the brick moulding bed (7) is more than 200mm.

4. The foundation slab pit side mold system of claim 2, wherein: be provided with raft bed course (5) between nature soil (9) and foundation slab (10), and collar tie beam and engineering pile connecting steel bar (4) are located raft bed course (5), the thickness of raft bed course (5) is greater than 15mm, the edge of raft bed course (5) is greater than 300mm with engineering pile (1) outside distance.

5. The foundation slab pit side mold system of claim 1, wherein: the constructional column (3) is provided with a constructional column reinforcing bar (31), and the bottom end of the constructional column reinforcing bar (31) is fixedly connected with the foundation reinforcing bar (81).

6. The foundation slab pit side mold system of claim 1, wherein: a plurality of equally distributed constructional columns and wall connecting ribs (71) are arranged in the brick moulding bed (7), and the constructional columns and wall connecting ribs (71) are fixedly connected with the constructional column reinforcing bars (31).

7. The foundation slab pit side mold system of claim 1, wherein: the spacing of the constructional columns (3) is less than 4000mm.

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