Temporary stand column system of foundation pit supporting structure

Abstract

The utility model provides a temporary stand column system of a foundation pit supporting structure, which comprises a foundation pit wrapped by an enclosure wall, a stand column foundation pile is arranged in the middle of the foundation pit, a stand column is arranged at the top of the stand column foundation pile, the stand column is connected with the enclosure wall through a beam body, and the beam body comprises a plurality of temporary stand column supporting pieces. The two ends of the temporary stand column supporting pieces are connected, the temporary stand column supporting pieces arranged at the two ends of the beam body are fixed to the stand column and the enclosure wall respectively, an operation inner cavity is formed in the stand column, and limiting holes are formed in the side wall of the operation inner cavity. According to the utility model, the temporary supporting column supporting pieces are established, the temporary supporting column supporting pieces can be flexibly disassembled and can be conveniently assembled and connected for the second time, so that a temporary supporting column system of the foundation pit supporting structure realizes a recycling function, and the assembled temporary supporting column supporting pieces are supported by the vertical columns and are fixed by using butt-joint bolts; and the temporary supporting column supporting piece can be separated only by disassembling the bolt.

Description

Technical Field

[0001] The utility model belongs to the field of building construction, in particular to a temporary column system of a foundation pit supporting structure. Background Art

[0002] A foundation pit is a deep pit excavated from the ground to meet the needs of underground construction of a building. When the excavation depth of the foundation pit exceeds 3 meters or the regional conditions are poor, in order to prevent the soil from losing stability and collapsing, certain support and reinforcement measures are required to ensure the safety of the surrounding buildings and construction workers in the foundation pit. For foundation pits with a depth of more than 7 meters or when the foundation pit is close to the building and slope cannot be cut, and vertical excavation is required, support piles and steel supports are usually used;

[0003] Temporary columns and support beams are built around the retaining walls inside the foundation pit. They are usually set inside the foundation pit to support the retaining walls of the foundation pit. This structure is usually a temporary setting and needs to be dismantled later, which increases the cost of use. In addition, in the support system of the temporary columns, the supporting beams are spaced relatively large. In order to ensure the stable support function of the foundation pit support, most of them are cast in one piece using concrete. If they are not dismantled, the construction cost of the foundation pit will increase and the waterproof construction will be difficult when the foundation pit is established. Direct dismantling will cause too much construction waste and increase the labor and difficulty of the construction process.

[0004] In summary, the utility model provides a temporary column system of a foundation pit support structure to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a temporary column system of a foundation pit support structure to solve the problems in the prior art of increasing the construction cost of the foundation pit and the difficulty of waterproof construction, and direct demolition will cause excessive construction waste, increase the labor workload and construction difficulty during the construction process, etc.

[0006] A temporary column system of a foundation pit support structure comprises a foundation pit wrapped by a retaining wall, column piles are arranged in the middle of the foundation pit, the top of the column piles is a column, the column and the retaining wall are connected by a beam body, the beam body comprises a plurality of temporary column struts, the two ends of the temporary column struts are connected, the temporary column struts arranged at the two ends of the beam body are respectively fixed to the column and the retaining wall, an operating inner cavity is opened on the column, a limiting hole is opened on the side wall of the operating inner cavity, a plurality of reinforcing steel strands are arranged between the column and the retaining wall, and a non-return lock sleeve and a non-return anchor are respectively arranged at both ends of the reinforcing steel strands.

[0007] Furthermore, the temporary column supports are connected by a plurality of butt bolts, and the temporary column supports are also connected to the columns and the surrounding walls by a plurality of butt bolts. In the beam body, the temporary column supports are connected in sequence.

[0008] Furthermore, the operating inner cavity is opened at the top 1 / 3 of the column, and the operating inner cavity is filled with epoxy resin glue.

[0009] Furthermore, one of the non-return lock sleeves is arranged in the defined hole, and the other non-return lock sleeve is embedded in the surrounding wall.

[0010] Furthermore, the non-return anchor is arranged in the non-return lock sleeve, and a plurality of the non-return anchors are arranged and surround the reinforcing steel strand.

[0011] Furthermore, one end of the reinforcing steel strand is inserted into the enclosing wall, and the other end is inserted into the operating cavity.

[0012] Furthermore, a pit bottom reinforcement layer is arranged at the bottom of the foundation pit. The pit bottom reinforcement layer is cast with concrete and is in close contact with the side wall of the retaining wall.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model establishes temporary pillar struts, which can be flexibly dismantled to facilitate secondary assembly, so that the temporary pillar system of the foundation pit support structure can be recycled. The assembleable temporary pillar struts are supported by pillars and fixed with butt bolts. When disassembling, only the bolts need to be removed to separate the temporary pillar struts.

[0015] 2. The utility model can increase the flexural strength between temporary supporting members by arranging reinforcing steel strands with hinged ends in the middle of multiple temporary supporting members. The flexural resistance of the support between the temporary supporting members is increased by pulling the reinforcing steel strands, and the strength of the support between the columns and the beam body is increased, making the beam body more solid. When dismantling, the temporary columns can also be dismantled to achieve the purpose of quickly dismantling the entire temporary column system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the beam body of the utility model;

[0018] Figure 3 It is a three-dimensional diagram of the reinforced steel strand of the utility model.

[0019] In the figure:

[0020] 1. Retaining wall; 2. Pit bottom reinforcement layer; 3. Column foundation piles; 4. Columns; 5. Temporary column supports; 6. Reinforced steel strands; 7. Check lock sleeves; 8. Check anchors; 9. Operating inner cavity; 10. Docking bolts. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figure 1-3 As shown, the utility model provides a temporary column system of a foundation pit support structure, including a foundation pit wrapped by a retaining wall 1, a column pile 3 is arranged in the middle of the foundation pit, the top of the column pile 3 is a column 4, the column 4 and the retaining wall 1 are connected by a beam body, the beam body includes a plurality of temporary column supports 5, the two ends of the temporary column supports 5 are connected, the temporary column supports 5 arranged at both ends of the beam body are respectively fixed on the column 4 and the retaining wall 1, an operating inner cavity 9 is opened on the column 4, a limiting hole is opened on the side wall of the operating inner cavity 9, a plurality of reinforcing steel strands 6 are arranged between the column 4 and the retaining wall 1, and a non-return lock sleeve 7 and a non-return anchor 8 are respectively arranged at both ends of the reinforcing steel strand 6.

[0023] As an implementation mode of the utility model, temporary column supports 5 are connected by multiple docking bolts 10, and temporary column supports 5 are also connected to columns 4 and retaining walls 1 by multiple docking bolts 10. In the beam body, temporary column supports 5 are connected in sequence.

[0024] As an implementation mode of the utility model, the operation inner cavity 9 is opened at the top 1 / 3 position of the column 4, and the operation inner cavity 9 is filled with epoxy resin glue.

[0025] As an implementation mode of the utility model, one non-return lock sleeve 7 is arranged in the limiting hole, and the other non-return lock sleeve 7 is embedded in the surrounding wall 1 .

[0026] As an implementation mode of the present utility model, the non-return anchor 8 is disposed in the non-return lock sleeve 7 , and a plurality of non-return anchors 8 are provided and surround the reinforcing steel strand 6 .

[0027] As an implementation mode of the present utility model, one end of the reinforcing steel strand 6 is inserted into the enclosure wall 1 , and the other end is inserted into the operating inner cavity 9 .

[0028] As an implementation mode of the utility model, a pit bottom reinforcement layer 2 is arranged at the bottom of the foundation pit. The pit bottom reinforcement layer 2 is cast with concrete and is in close contact with the side wall of the retaining wall 1 .

[0029] Specific working principle:

[0030] The column foundation pile 3 is deep underground, and the column 4 is supported on the surface of the column foundation pile 3 as a temporary column. The beam body assembled by multiple temporary column support members 5 on both sides is supported between the enclosure walls. One end of the reinforcement steel strand 6 is deeply buried in the enclosure wall, and the other end passes through the operation inner cavity 9, and the operation inner cavity 9 is used for limiting, pulling the two ends of the beam body to support the multiple temporary column support members 5;

[0031] Both ends of the reinforcing steel strand 6 are limited by the non-return lock sleeve 7 and the non-return anchor 8, so that when the reinforcing steel strand 6 passes through the non-return anchor 8, it can only be pulled in one direction to prevent the reinforcing steel strand 6 from shrinking, and then the operating inner cavity 9 is filled with epoxy resin glue for sealing;

[0032] When disassembling, the butt bolts between the temporary column supports 5 are removed, and then the top of the column is destroyed, and all of them can be dismantled.

[0033] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A temporary column system of a foundation pit support structure, comprising a foundation pit surrounded by a retaining wall (1), a column foundation pile (3) being arranged in the middle of the foundation pit, a column (4) being located at the top of the column foundation pile (3), and the column (4) being connected to the retaining wall (1) by a beam body, characterized in that: The beam body comprises a plurality of temporary column supports (5), the two ends of the temporary column supports (5) are connected, the temporary column supports (5) arranged at the two ends of the beam body are respectively fixed on the column (4) and the surrounding wall (1), an operating inner cavity (9) is opened on the column (4), and a limiting hole is opened on the side wall of the operating inner cavity (9), and a plurality of reinforcing steel strands (6) are arranged between the column (4) and the surrounding wall (1), and a non-return locking sleeve (7) and a non-return anchor (8) are respectively arranged at the two ends of the reinforcing steel strands (6).

2. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: The temporary column supports (5) are connected to each other via a plurality of butt bolts (10), and the temporary column supports (5) are also connected to the columns (4) and the surrounding wall (1) via a plurality of butt bolts (10). In the beam body, the temporary column supports (5) are connected in sequence.

3. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: The operating inner cavity (9) is opened at the top 1 / 3 position of the column (4), and the operating inner cavity (9) is filled with epoxy resin glue.

4. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: One of the non-return lock sleeves (7) is arranged in the defined hole, and the other non-return lock sleeve (7) is embedded in the surrounding wall (1).

5. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: The non-return anchor (8) is arranged in the non-return lock sleeve (7), and a plurality of the non-return anchors (8) are arranged and surround the reinforcing steel strand (6).

6. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: One end of the reinforcing steel strand (6) is inserted into the enclosure wall (1), and the other end is inserted into the operating inner cavity (9).

7. The temporary column system of the foundation pit support structure according to claim 1, characterized in that: A pit bottom reinforcement layer (2) is arranged at the bottom of the foundation pit. The pit bottom reinforcement layer (2) is cast with concrete and is in close contact with the side wall of the enclosure wall (1).

Images