Deep foundation pit steel sheet pile supporting structure for engineering construction

Abstract

The utility model relates to the technical field of engineering construction, and discloses a deep foundation pit steel sheet pile supporting structure for engineering construction, which comprises a steel sheet pile body attached to the inner wall of a deep foundation pit, an integrally formed steel supporting inner frame is arranged on the periphery of the inner side of the steel sheet pile body, and connecting frames are symmetrically arranged at four corners of the inner side of the steel supporting frame. A cross beam is fixedly connected between every two adjacent connecting frames, the cross beams are divided into square cross beams and round cross beams, the two square cross beams and the two round cross beams are symmetrically distributed in pairs at equal intervals, and an inclined supporting frame and an arc-shaped frame are fixedly connected between every two adjacent square cross beams and round cross beams. According to the deep foundation pit steel sheet pile supporting structure for engineering construction, through the inner supporting structure with the specific layout, the overall stability can be greatly improved, after installation is completed, the problem of slippage can be effectively avoided, the safety of deep foundation pit engineering is ensured, and the purpose of high stability is achieved on the whole.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction, in particular to a deep foundation pit steel sheet pile support structure for engineering construction. Background Technique

[0002] The deep foundation pit steel sheet pile support is a temporary or permanent deep foundation pit retaining structure for construction projects. This support structure drives steel sheet piles into the soil layer to form a continuous wall to protect the construction site and the surrounding environment from the impact of construction.

[0003] Referring to a deep foundation pit steel sheet pile support structure disclosed in Chinese Patent CN211285622U, which includes steel sheet piles and support structure components, etc. This steel sheet pile support structure achieves a sealing effect. However, with the development of the engineering industry, the stability requirements for the steel sheet pile support structure to be installed in the deep foundation pit are becoming increasingly strict. Most of the traditional steel sheet pile support structures lack stability, resulting in possible loosening or slight shaking and displacement during the long-term support process, seriously affecting safety. Therefore, a deep foundation pit steel sheet pile support structure for engineering construction is proposed to solve the above problems. Summary of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a deep foundation pit steel sheet pile support structure for engineering construction, which has the advantages of high stability, etc., and solves the problem of lack of stability of the traditional deep foundation pit steel sheet pile support structure.

[0006] (II) Technical Solutions

[0007] To achieve the above high-stability purpose, the utility model provides the following technical solution: A deep foundation pit steel sheet pile support structure for engineering construction, including a steel sheet pile body installed by fitting to the inner wall of the deep foundation pit, and an integrally formed steel support inner frame is arranged around the inner side of the steel sheet pile body.

[0008] Connecting frames are symmetrically arranged at the four corners inside the steel support frame. Cross beams are fixedly connected between every two adjacent connecting frames. The cross beams are divided into square cross beams and circular cross beams. The two square cross beams and the two circular cross beams are symmetrically and equally spaced in pairs. Diagonal braces and arc-shaped frames are fixedly connected between every two adjacent square cross beams and circular cross beams. A number of concrete thin piles are fixedly connected to the lower surface of the arc-shaped frame. A reinforcement and stability pile assembly is fixedly connected to the lower surface of the square cross beam.

[0009] Preferably, the reinforcement and stabilization pile assembly includes a plurality of concrete-filled steel pipes. The plurality of concrete-filled steel pipes are fixedly connected to the lower surface of the square cross beam at equal intervals. An outer sleeve pile is sleeved outside the concrete-filled steel pipe, and a plurality of stabilizing nails are fixedly connected inside the outer sleeve pile.

[0010] Preferably, the bottom of the outer sleeve pile is flush with the bottom of the concrete-filled steel pipe.

[0011] Preferably, the number of the concrete-filled steel pipes is two groups, and the number of each group of concrete-filled steel pipes is ten. The two groups of concrete-filled steel pipes are symmetrically arranged at equal intervals on the lower surface of the square cross beam.

[0012] Preferably, the number of the stabilizing nails is four groups, and the number of each group of stabilizing nails is ten. Each group of ten stabilizing nails is fixedly connected to the inner top wall of the outer sleeve pile and is evenly distributed in a circular pattern with the axis of the outer sleeve pile as the midpoint.

[0013] Preferably, the square cross beam is in the shape of a cuboid, the circular cross beam is in the shape of a cylinder, and the connecting frame is in the shape of a herringbone.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a deep foundation pit steel sheet pile support structure for engineering construction, which has the following beneficial effects:

[0016] This deep foundation pit steel sheet pile support structure for engineering construction can greatly improve the overall stability through the specifically arranged internal support structure. After installation, it can also effectively avoid the problem of slipping, ensuring the safety of the deep foundation pit project and achieving the purpose of high stability as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the utility model;

[0018] Figure 2 is a schematic internal structure diagram of the outer sleeve pile of the utility model.

[0019] In the figure: 1, steel sheet pile body; 2, steel support inner frame; 3, connecting frame; 4, square cross beam; 5, circular cross beam; 6, inclined support frame; 7, arc-shaped frame; 8, concrete fine pile; 9, concrete-filled steel pipe; 10, outer sleeve pile; 11, stabilizing nail. DETAILED DESCRIPTION OF THE INVENTION

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1-2 , a deep foundation pit steel sheet pile support structure for engineering construction, including a steel sheet pile body 1 installed by fitting to the inner wall of the deep foundation pit. A steel support inner frame 2 is integrally formed around the inner side of the steel sheet pile body 1. Connection frames 3 are symmetrically arranged at the four corners of the inner side of the steel support frame 2. A cross beam is fixedly connected between every two adjacent connection frames 3. The cross beams are divided into square cross beams 4 and circular cross beams 5. The two square cross beams 4 and the two circular cross beams 5 are symmetrically and equidistantly distributed in pairs. A diagonal brace 6 and an arc-shaped frame 7 are fixedly connected between every two adjacent square cross beams 4 and circular cross beams 5. A number of concrete fine piles 8 are fixedly connected to the lower surface of the arc-shaped frame 7. A reinforcement and stability pile assembly is fixedly connected to the lower surface of the square cross beam 4.

[0022] Among them, the reinforcement and stability pile assembly includes a number of concrete-filled steel tubular piles 9. The multiple concrete-filled steel tubular piles 9 are equidistantly and fixedly connected to the lower surface of the square cross beam 4. The number of the concrete-filled steel tubular piles 9 is two groups, and the number of each group of concrete-filled steel tubular piles 9 is ten. The two groups of concrete-filled steel tubular piles 9 are symmetrically arranged at equal intervals on the lower surface of the square cross beam 4. An outer sleeve pile 10 is sleeved outside the concrete-filled steel tubular pile 9. The bottom of the outer sleeve pile 10 is flush with the bottom of the concrete-filled steel tubular pile 9. A number of stabilizing nails 11 are fixedly connected inside the outer sleeve pile 10.

[0023] It can be understood in the above embodiments that by setting the reinforcement and stability pile assembly, the stability of the connection with the soil can be effectively strengthened, and the problem of slippage can be prevented.

[0024] In addition, the number of the stabilizing nails 11 is four groups, and the number of each group of stabilizing nails 11 is ten. Each group of ten stabilizing nails 11 is fixedly connected to the inner top wall of the outer sleeve pile 10 and is evenly distributed in a circumferential manner with the axis of the outer sleeve pile 10 as the midpoint.

[0025] It should be noted that in this embodiment, the stabilizing nails 11 are symmetrically and circumferentially distributed, which can ensure the balance and stability after being inserted into the soil.

[0026] It also needs to be explained in this embodiment that the shape of the square cross beam 4 is a cuboid, the shape of the circular cross beam 5 is a cylinder, and the shape of the connection frame 3 is a herringbone shape. Due to the herringbone design of the connection frame 3, a support space close to an inner triangular shape can be formed, thereby improving the stability.

[0027] The working principle of this embodiment is as follows:

[0028] By arranging four symmetric connecting frames 3 shaped like a herringbone, a stable support space can be formed at the four corners of the steel support inner frame 2. Through the reasonable layout and connection of the square cross beam 4, circular cross beam 5, diagonal brace 6 and arc-shaped frame 7, a stable support system is formed, effectively resisting the pressure of the soil around the deep foundation pit. After the concrete-filled steel pipe pile 9 is inserted into the soil, multiple stable nails 11 inside the outer pile 10 will act together to be inserted into the soil, significantly enhancing the connection stability between the support structure and the soil and effectively preventing the sliding of the support structure.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep foundation pit steel sheet pile support structure for engineering construction, comprising: A steel sheet pile body (1) installed by fitting to the inner wall of the deep foundation pit, and an integrally formed steel support inner frame (2) is provided around the inner side of the steel sheet pile body (1); It is characterized in that: connecting frames (3) are symmetrically provided at the inner corners of the inner side of the steel support inner frame (2), cross beams are provided between every two adjacent connecting frames (3), the cross beams are divided into square cross beams (4) and circular cross beams (5), the two square cross beams (4) and the two circular cross beams (5) are symmetrically and equidistantly distributed in pairs, a diagonal support frame (6) and an arc-shaped frame (7) are provided between every two adjacent square cross beams (4) and circular cross beams (5), a plurality of concrete thin piles (8) are provided on one side of the arc-shaped frame (7), and a reinforcement and stability pile assembly is provided on one side of the square cross beam (4).

2. The supporting structure of steel sheet piles for deep foundation pits in engineering construction according to claim 1, characterized in that: The reinforcement and stability pile assembly includes a plurality of concrete-filled steel pipes (9), the plurality of concrete-filled steel pipes (9) are equidistantly arranged on the lower surface of the square cross beam (4), an outer sleeve pile (10) is sleeved outside the concrete-filled steel pipe (9), and a plurality of stabilizing nails (11) are provided inside the outer sleeve pile (10).

3. A deep foundation pit steel sheet pile support structure for engineering construction according to claim 2, characterized in that: The bottom of the outer sleeve pile (10) is flush with the bottom of the concrete-filled steel pipe (9).

4. A deep foundation pit steel sheet pile support structure for engineering construction according to claim 2, characterized in that: The number of the concrete-filled steel pipes (9) is two groups, and the number of each group of concrete-filled steel pipes (9) is ten. The two groups of concrete-filled steel pipes (9) are symmetrically arranged at equal distances on the lower surface of the square cross beam (4).

5. The supporting structure of steel sheet piles for deep foundation pits in engineering construction according to claim 2, characterized in that: The number of the stabilizing nails (11) is four groups, the number of each group of stabilizing nails (11) is ten, and each group of ten stabilizing nails (11) is arranged on the inner top wall of the outer sleeve pile (10) and is circumferentially and equidistantly distributed with the axis of the outer sleeve pile (10) as the midpoint.

6. The steel sheet pile support structure for deep foundation pits in engineering construction according to claim 1, characterized in that: The square cross beam (4) is in the shape of a cuboid, the circular cross beam (5) is in the shape of a cylinder, and the connecting frame (3) is in the shape of a herringbone.

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