Supporting device for subway station construction

Abstract

The utility model relates to the technical field of metro construction, in particular to a supporting device for metro station construction, which is arranged in a metro foundation pit, and the foundation pit is in a dumbbell shape with two wide ends and a narrow middle part. Cast-in-place piles are vertically arranged on the inner wall of the foundation pit, steel supporting structures are vertically arranged on the inner sides of the cast-in-place piles, upper connecting plates are fixedly connected to the upper ends of the cast-in-place piles, an upper supporting beam stretching across the foundation pit is arranged in the middle of the foundation pit, and the two ends of the upper supporting beam are connected with the upper connecting plates on the two sides of the foundation pit. The two ends of the upper supporting oblique beam are connected with the upper connecting plates on the two adjacent sides of the foundation pit. Cast-in-place piles are vertically arranged on the inner wall of the foundation pit, upper connecting plates are fixedly connected to the upper ends of the cast-in-place piles, an upper supporting beam stretching across the foundation pit is arranged in the middle of the foundation pit, upper supporting oblique beams stretching across the foundation pit obliquely are arranged at the two ends of the foundation pit, and the upper supporting beam and the upper supporting oblique beams are connected with the cast-in-place piles through the upper connecting plates, so that the cast-in-place piles are connected with supports in the foundation pit. And the strength of the wall in the subway station is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of subway construction, and more specifically, to a support device for subway station construction. Background Art

[0002] A subway station is a platform for passengers to get on and off when the subway is running. When building a subway station, it is necessary to excavate a foundation pit on the ground to build the subway station. After starting to dig the foundation pit for building the subway station, it is necessary to set up a support device on the inner wall of the foundation pit to improve the stability of the subway station foundation pit. For the existing support device for subway station construction, bored cast-in-place piles are usually arranged vertically on the inner wall of the foundation pit, and a steel waling is arranged inside the bored cast-in-place piles. However, there is no connecting structure between the bored cast-in-place piles and the steel waling, and the strength of the subway station wall needs to be improved. Summary of the Utility Model

[0003] The utility model aims to provide a support device for subway station construction that can effectively improve the strength of the subway station wall to overcome the above deficiencies.

[0004] A support device for subway station construction is arranged in a subway foundation pit. The foundation pit is in a dumbbell shape with wide ends and a narrow middle. Bored cast-in-place piles are arranged vertically on the inner wall of the foundation pit. A steel support structure is vertically arranged inside the bored cast-in-place piles. An upper connecting plate is fixedly connected to the upper end of the bored cast-in-place pile. An upper support beam spanning the foundation pit is arranged in the middle of the foundation pit. Two ends of the upper support beam are connected to the upper connecting plates on both sides of the foundation pit. Upper support inclined beams obliquely spanning the foundation pit are arranged at both ends of the foundation pit. Two ends of the upper support inclined beam are connected to the upper connecting plates on adjacent sides of the foundation pit.

[0005] Further, the upper connecting plate is a steel plate, the upper support beam and the upper support inclined beam are both steel beams, and the upper connecting plate is welded to the steel bars in the bored cast-in-place pile.

[0006] Further, the upper support beam and the upper support inclined beam are welded or integrally formed with the upper connecting plate.

[0007] Further, the steel support structure includes a plurality of flat support steel vertical plates and corner support steel vertical plates. The corner support steel vertical plates are arranged at the inner corners of the foundation pit. Adjacent flat support steel vertical plates and between the flat support steel vertical plates and the corner support steel vertical plates are spliced with each other.

[0008] Further, splicing plates are staggered at both ends of the flat support steel vertical plates and the corner support steel vertical plates, and adjacent splicing plates are bolted together.

[0009] Furthermore, a lower support beam and a lower support inclined beam are provided below the steel support structure. The lower support beam is arranged corresponding to the upper support beam vertically, and the lower support inclined beam is arranged corresponding to the upper support inclined beam vertically. Both ends of the lower support beam and the lower support inclined beam are connected with lower connecting plates, and the lower connecting plates are fixedly connected with the cast-in-place piles.

[0010] Furthermore, the lower connecting plate is a steel plate, the lower support beam and the lower support inclined beam are both steel beams, and the lower connecting plate is welded and connected with the steel bars in the cast-in-place pile.

[0011] Furthermore, the cast-in-place pile is a pile with a diameter of φ1500*1900.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the support device for subway station construction of the present utility model, cast-in-place piles are vertically arranged on the inner wall of the foundation pit. The upper ends of the cast-in-place piles are fixedly connected with upper connecting plates. An upper support beam spanning the foundation pit is arranged in the middle of the foundation pit, and upper support inclined beams obliquely spanning the foundation pit are arranged at both ends of the foundation pit. The upper support beam and the upper support inclined beams are both connected with the cast-in-place piles through the upper connecting plates, realizing the connection between the cast-in-place piles and the internal support of the foundation pit, and ensuring the wall strength inside the subway station.

[0014] In the support device for subway station construction of the present utility model, a steel support structure is arranged inside the cast-in-place pile, further improving the wall strength inside the subway station. The steel support structure adopts a flat support steel vertical plate and an angle support steel vertical plate with a segmented splicing type, which is convenient for transportation and layout and has good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is the overall structure top view of the support device for subway station construction in the embodiment of the present utility model.

[0017] Figure 2 is the structural schematic diagram of the support device in the middle of the foundation pit in the embodiment of the present utility model.

[0018] Figure 3 is the structural schematic diagram of the support device at both ends of the foundation pit in the embodiment of the present utility model.

[0019] Figure 4 is the structural schematic diagram of the flat support steel vertical plate in the embodiment of the present utility model.

[0020] Figure 5It is a schematic structural diagram of the corner support steel vertical plate in the embodiment of the present utility model.

[0021] In the figure: 1, foundation pit; 2, cast-in-place pile; 3, upper connecting plate; 4, upper support beam; 5, upper support inclined beam; 6, flat support steel vertical plate; 7, corner support steel vertical plate; 8, splicing plate; 9, lower support beam. Specific embodiments

[0022] 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 work shall fall within the protection scope of the present utility model.

[0023] As Figure 1 , Figure 2 and Figure 3 shown, the support device for subway station construction in this embodiment is arranged in the subway foundation pit 1, and the foundation pit 1 is in a dumbbell shape with wide ends and a narrow middle. Cast-in-place piles 2 are vertically arranged on the inner wall of the foundation pit 1, and the cast-in-place piles 2 are piles with a diameter of φ1500*1900. A steel support structure is vertically arranged inside the cast-in-place piles 2. An upper connecting plate 3 is fixedly connected to the upper end of the cast-in-place pile 2. An upper support beam 4 spanning the foundation pit 1 is arranged in the middle of the foundation pit 1, and both ends of the upper support beam 4 are connected to the upper connecting plates 3 on both sides of the foundation pit 1. Upper support inclined beams 5 obliquely spanning the foundation pit 1 are arranged at both ends of the foundation pit 1, and both ends of the upper support inclined beams 5 are connected to the upper connecting plates 3 on adjacent sides of the foundation pit 1.

[0024] For the support device for subway station construction in this embodiment, cast-in-place piles 2 are vertically arranged on the inner wall of the foundation pit 1, an upper connecting plate 3 is fixedly connected to the upper end of the cast-in-place pile 2, an upper support beam 4 spanning the foundation pit 1 is arranged in the middle of the foundation pit 1, and upper support inclined beams 5 obliquely spanning the foundation pit 1 are arranged at both ends of the foundation pit 1. Both the upper support beam 4 and the upper support inclined beam 5 are connected to the cast-in-place pile 2 through the upper connecting plate 3, realizing the connection between the cast-in-place pile 2 and the internal support of the foundation pit 1, and ensuring the wall strength inside the subway station.

[0025] Specifically, in this embodiment, the upper connecting plate 3 is a steel plate, both the upper support beam 4 and the upper support inclined beam 5 are steel beams, and the upper connecting plate 3 is welded to the steel bars inside the cast-in-place pile 2. The upper support beam 4 and the upper support inclined beam 5 are welded or integrally formed with the upper connecting plate 3.

[0026] In this embodiment, the steel support structure includes a plurality of flat support steel vertical plates 6 and corner support steel vertical plates 7. The corner support steel vertical plates 7 are arranged at the inner corners of the foundation pit 1, and the adjacent flat support steel vertical plates 6 and between the flat support steel vertical plates 6 and the corner support steel vertical plates 7 are spliced with each other. Specifically, as Figure 4 andFigure 5 As shown, splicing plates 8 are staggeredly arranged at both ends of the flat support steel vertical plate 6 and the corner support steel vertical plate 7, and the adjacent splicing plates 8 are bolted together.

[0027] In the support device for subway station construction in this embodiment, a steel support structure is arranged inside the cast-in-place pile 2 to further improve the strength of the wall inside the subway station. The steel support structure adopts the segmented splicing flat support steel vertical plate 6 and the corner support steel vertical plate 7, which is convenient for transportation and layout and has good adaptability.

[0028] In this embodiment, a lower support beam 9 and a lower support inclined beam are arranged below the steel support structure. The lower support beam 9 is arranged corresponding to the upper support beam 4 up and down, and the lower support inclined beam is arranged corresponding to the upper support inclined beam 5 up and down. Both ends of the lower support beam 9 and the lower support inclined beam are connected with lower connecting plates, and the lower connecting plates are fixedly connected to the cast-in-place pile 2. Specifically, the lower connecting plates are steel plates, the lower support beam 9 and the lower support inclined beam are both steel beams, and the lower connecting plates are welded to the steel bars inside the cast-in-place pile 2.

[0029] The working principle of the support device for subway station construction in this embodiment is as follows:

[0030] Cast-in-place piles 2 are vertically arranged on the inner wall of the foundation pit 1. The upper ends of the cast-in-place piles 2 are fixedly connected with upper connecting plates 3. An upper support beam 4 spanning the foundation pit 1 is arranged in the middle of the foundation pit 1, and upper support inclined beams 5 obliquely spanning the foundation pit 1 are arranged at both ends of the foundation pit 1. The upper support beam 4 and the upper support inclined beams 5 are both connected to the cast-in-place piles 2 through the upper connecting plates 3, realizing the connection between the cast-in-place piles 2 and the internal support of the foundation pit 1, and ensuring the strength of the wall inside the subway station. A steel support structure is arranged inside the cast-in-place pile 2 to further improve the strength of the wall inside the subway station. The steel support structure adopts the segmented splicing flat support steel vertical plate 6 and the corner support steel vertical plate 7, which is convenient for transportation and layout and has good adaptability.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A support device for subway station construction, characterized in that: The invention is arranged in a subway foundation pit (1), wherein the foundation pit (1) is in a dumbbell shape with wide ends and a narrow middle part; cast-in-place piles (2) are arranged vertically on the inner wall of the foundation pit (1), and a steel support structure is arranged vertically inside the cast-in-place piles (2); an upper connecting plate (3) is fixedly connected to the upper end of the cast-in-place piles (2); an upper supporting beam (4) spanning the foundation pit (1) is arranged in the middle of the foundation pit (1), and the two ends of the upper supporting beam (4) are connected to the upper connecting plates (3) on both sides of the foundation pit (1); and upper supporting inclined beams (5) obliquely spanning the foundation pit (1) are arranged at both ends of the foundation pit (1), and the two ends of the upper supporting inclined beam (5) are connected to the upper connecting plates (3) on the adjacent two sides of the foundation pit (1).

2. The support device for subway station construction according to claim 1, characterized in that: The upper connecting plate (3) is a steel plate, the upper supporting beam (4) and the upper supporting inclined beam (5) are both steel beams, and the upper connecting plate (3) is welded to the steel bars in the cast-in-place pile (2).

3. The support device for subway station construction according to claim 2, characterized in that: The upper support beam (4) and the upper support inclined beam (5) are welded or integrally formed with the upper connecting plate (3).

4. The support device for subway station construction according to claim 3, characterized in that: The steel support structure comprises a plurality of flat support steel vertical plates (6) and angle support steel vertical plates (7), wherein the angle support steel vertical plates (7) are arranged at the inner corners of the foundation pit (1), and the adjacent flat support steel vertical plates (6) and the flat support steel vertical plates (6) and the angle support steel vertical plates (7) are spliced ​​with each other, and the upper support beam (4) and the upper support inclined beam (5) are welded to the upper ends of the flat support steel vertical plates (6) or the angle support steel vertical plates (7).

5. The support device for subway station construction according to claim 4, characterized in that: Splicing plates (8) are alternately arranged at both ends of the flat supporting steel vertical plates (6) and the angle supporting steel vertical plates (7), and adjacent splicing plates (8) are connected by bolts.

6. The support device for subway station construction according to claim 5, characterized in that: A lower support beam (9) and a lower support inclined beam are arranged below the steel support structure. The lower support beam (9) is arranged correspondingly to the upper support beam (4) in the upper and lower directions. The lower support inclined beam and the upper support inclined beam (5) are arranged correspondingly in the upper and lower directions. Both ends of the lower support beam (9) and the lower support inclined beam are connected to lower connecting plates, and the lower connecting plates are fixedly connected to the cast-in-place piles (2).

7. The support device for subway station construction according to claim 6, characterized in that: The lower connecting plate is a steel plate, the lower supporting beam (9) and the lower supporting inclined beam are both steel beams, and the lower connecting plate is welded to the steel bars in the cast-in-place pile (2).

8. The support device for subway station construction according to claim 1, characterized in that: The cast-in-place pile (2) is a pile with a diameter of 1500*1900.

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