A reusable adjustable foundation pit support suspension type triangular support frame

Abstract

The utility model discloses a kind of adjustable foundation pit support suspension type triangular support frame of reusability, comprising: vertical support channel steel, which is fixedly connected with the hanging net spray protection layer of side slope by expansion bolt;Horizontal support channel steel is set in the lower surface of waist beam form, and back plane is supported in the bottom of waist beam form, and the inner end of horizontal support channel steel is fixedly connected with the top end of vertical support angle steel;Oblique adjustable support channel steel assembly, it includes oblique large channel steel and oblique small channel steel, oblique large channel steel inner sleeve oblique small channel steel in lower end, and is connected by first high-strength bolt, oblique large channel steel upper end is fixedly connected with horizontal support channel steel, and oblique small channel steel lower end is connected with vertical support channel steel;Vertical short steel pipe, it is vertically arranged in the top of horizontal support channel steel, and is abutted with the outer side of waist beam form.The utility model can form stable triangular support structure, can be reused, and meanwhile solve the problem that template support frame body occupies lower space and affects next process.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit construction technology, specifically to a reusable and adjustable foundation pit support suspension triangular support frame. Background Technology

[0002] With increasing building heights and limited land resources, some construction projects involve deep foundation pits, requiring foundation pit support engineering. In these projects, slope protection often necessitates the construction of joist beams, making the selection of the formwork support frame for these joist beams crucial. Traditional formwork support systems require ground support, meaning they cannot be dismantled early and must remain in place for an extended period. This hinders subsequent earthwork excavation and joist beam construction, impacting the overall project schedule. Therefore, adopting a support system that provides stable support without interfering with subsequent earthwork excavation and joist beam construction is essential. Utility Model Content

[0003] The purpose of this invention is to provide a reusable and adjustable suspended triangular support frame for foundation pit support, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a reusable and adjustable suspended triangular support frame for foundation pit support, comprising: a vertical support channel steel, which is fixedly connected to the mesh spraying layer of the slope by expansion bolts; a horizontal support channel steel, which is set on the lower surface of the waist beam formwork, with the groove of the horizontal support channel steel facing downwards, the back plane supporting the bottom of the waist beam formwork, and the inner end of the horizontal support channel steel being fixedly connected to the top of the vertical support angle steel; an inclined adjustable support channel steel assembly, which includes an inclined large channel steel and an inclined small channel steel, the length of the inclined large channel steel being greater than the length of the inclined small channel steel, the lower end of the inclined large channel steel being fitted with the inclined small channel steel and connected by a first high-strength bolt, the upper end of the inclined large channel steel being fixedly connected to the horizontal support channel steel, and the lower end of the inclined small channel steel being connected to the vertical support channel steel; and a vertical short steel pipe, which is vertically set on the top of the horizontal support channel steel and abuts against the outer side of the waist beam formwork.

[0005] In a preferred embodiment, a plurality of first bolt holes are provided at the parts where the sides of the inclined large channel steel and the inclined small channel steel are interlocked, for installing first high-strength bolts.

[0006] In a preferred embodiment, the upper end of the vertical support channel steel is provided as an arc portion, which is connected to the end of the horizontal support channel steel by a second high-strength bolt. The lower end of the vertical support channel steel has a toothed groove on its side, and the lower end of the inclined small channel steel is provided with a third high-strength bolt, which is placed in the toothed groove of the vertical support channel steel.

[0007] In a preferred embodiment, the toothed groove is arranged in a vertical direction. The toothed groove includes a vertical barrel groove and multiple arc-shaped slots. The multiple arc-shaped slots are arranged on one side of the vertical barrel groove and are connected to the vertical barrel groove. The third high-strength bolt is locked in the arc-shaped slot.

[0008] In a preferred embodiment, a horizontal strip-shaped adjustment groove is provided on the back of the horizontal support channel steel, and the bottom of the vertical short steel pipe is connected to the horizontal strip-shaped adjustment groove of the horizontal support channel steel by a fourth high-strength bolt.

[0009] In a preferred embodiment, two vertical strip-shaped adjustment grooves are provided on the back of the vertical support channel steel, and expansion bolts are installed in the vertical strip-shaped adjustment grooves.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This utility model employs a combination of a large inclined channel steel and a small inclined channel steel nested within the large inclined channel steel. High-strength bolts are used to connect them at appropriate lengths within pre-drilled bolt holes, forming a stable triangular structure with the vertical support channel steel, horizontal support channel steel, and adjustable inclined support channel steel components. This ensures the overall stability and reliability of the device and solves the problem of the formwork support frame occupying lower space and affecting subsequent construction processes. After the formwork for the wainscoting is removed, the triangular support frame can be reused for the next wainscoting formwork support, allowing for earlier excavation of the space below the wainscoting and wainscoting construction, thus saving time and accelerating the construction progress. The connection positions between the upper end of the large inclined channel steel and the horizontal support channel steel, and between the lower end of the small inclined channel steel and the vertical support channel steel, are all adjustable. The angle and length can be adjusted according to usage requirements to suit different working conditions and facilitate reuse. Attached Figure Description

[0011] Figure 1 This is a side view of the overall installation structure of this utility model; Figure 2 for Figure 1 Front view of the installation structure of section A; Figure 3 This is a front view of the suspended triangular support frame structure for foundation pit support according to this utility model; Figure 4 This is a left view of the suspended triangular support frame structure for foundation pit support of this utility model; Figure 5 This is a top view of the suspended triangular support frame structure for foundation pit support according to this utility model.

[0012] Explanation of reference numerals in the attached figures: 1. Vertical support channel steel; 2. Horizontal support channel steel; 3. Diagonal large channel steel; 4. Diagonal small channel steel; 5. Expansion bolt; 6. Waist beam formwork; 7. Wire mesh sprayed protective layer; 8. First high-strength bolt; 9. Vertical short steel pipe; 10. First bolt hole; 11. Second high-strength bolt; 12. Toothed groove; 13. Third high-strength bolt; 14. Horizontal strip adjustment groove; 15. Fourth high-strength bolt; 16. Waist beam; 17. Second bolt hole; 18. Vertical strip adjustment groove; 19. Fifth high-strength bolt. Detailed Implementation

[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Example 1 like Figures 1 to 5 As shown, the reusable and adjustable suspended triangular support frame for foundation pit support according to a preferred embodiment of this utility model includes: a vertical support channel steel 1, a horizontal support channel steel 2, an adjustable inclined support channel steel assembly, and a vertical short steel pipe 9. The vertical support channel steel 1 is fixedly connected to the mesh spraying layer 7 of the slope by expansion bolts 5. The horizontal support channel steel 2 is set on the lower surface of the waist beam formwork 6, with the slot of the horizontal support channel steel 2 facing downwards. The back plane supports the bottom of the waist beam formwork 6 to provide support, and the inner end of the horizontal support channel steel 2 is fixedly connected to the top of the vertical support angle steel 1. The adjustable inclined support channel steel assembly includes a large inclined channel steel 3 and a small inclined channel steel 4. The length of the large inclined channel steel 3 is greater than the length of the small inclined channel steel 4. The small inclined channel steel 4 is fitted inside the lower end of the large inclined channel steel 3 and connected by a first high-strength bolt 8. The upper end of the large inclined channel steel 3 is fixedly connected to the horizontal support channel steel 2, and the lower end of the small inclined channel steel 4 is connected to the vertical support channel steel 1. The vertical short steel pipe 9 is vertically set on top of the horizontal support channel steel 2 and abuts against the outer side of the waist beam formwork 6, thus playing the role of side formwork fastening for the triangular support frame.

[0015] Furthermore, multiple first bolt holes 10 are provided at the parts where the sides of the inclined large channel steel 3 and the inclined small channel steel 4 interlock, for setting the first high-strength bolts 8.

[0016] Furthermore, the upper end of the vertical support channel steel 1 is configured as an arc portion, which is connected to the end of the horizontal support channel steel 2 by a second high-strength bolt 11. A toothed groove 12 is provided on the side of the lower end of the vertical support channel steel 1, and a third high-strength bolt 13 is inserted through the lower end of the inclined small channel steel 4. The third high-strength bolt 13 is placed in the toothed groove 12 of the vertical support channel steel 1. The toothed groove 12 is arranged in the vertical direction and includes a vertical barrel groove and multiple arc-shaped slots. The multiple arc-shaped slots are arranged on one side of the vertical barrel groove and are connected to the vertical barrel groove. The third high-strength bolt 13 is locked in the arc-shaped slot. Multiple second bolt holes 17 are provided at one end of the horizontal support channel steel 2. The upper end of the inclined large channel steel 3 is connected and fastened to one end of the horizontal support channel steel 2 with a fifth high-strength bolt 19 according to the required angle and position. The lower end of the inclined small channel steel 4 is placed in the arc-shaped groove at a suitable position in the toothed groove 12 by a third high-strength bolt 13. The third high-strength bolt 13 is used to connect the inclined large channel steel and the inclined small channel steel according to the required height and length position. The combination of the inclined large channel steel and the inclined small channel steel forms the hypotenuse of the triangular support frame, so as to form a stable triangular structure.

[0017] Furthermore, a horizontal strip adjustment groove 14 is provided on the back of the horizontal support channel steel 2 to facilitate the adjustment of the position of the vertical short steel pipe 9. The bottom of the vertical short steel pipe 9 is connected to the horizontal strip adjustment groove 14 of the horizontal support channel steel 2 by a fourth high-strength bolt 15.

[0018] Furthermore, two vertical strip adjustment grooves 18 are provided on the back of the vertical support channel steel 1. Expansion bolts 5 are set in the vertical strip adjustment grooves 18. The expansion bolts 5 can adjust the up and down position of the triangular support frame. After selecting a suitable position, the triangular support frame is fixed on the sprayed slope.

[0019] In one specific embodiment, the horizontal support channel steel 2 is made of 65×40×4.3mm channel steel with a length of 70-100cm; the vertical support channel steel 1 is made of 65×40×4.3mm channel steel with a length of 60-100cm; the inclined large channel steel is made of 65×40×4.3mm channel steel with a length of 40-90cm; the inclined small channel steel is made of 50×37×4.5mm channel steel with a length of 10-60cm; the vertical short steel pipe 9 is made of φ48×3mm round steel pipe with a length of 10-50cm; the expansion bolts are of M10 specification; and the high-strength bolts are of M12 specification.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reusable and adjustable suspended triangular support frame for foundation pit support, characterized in that: include: Vertical support channel steel (1) is fixedly connected to the mesh spraying layer (7) of the slope by expansion bolts (5); A horizontal support channel steel (2) is set on the lower surface of the waist beam template (6). The slot of the horizontal support channel steel (2) faces downward, and the back plane supports the bottom of the waist beam template (6). The inner end of the horizontal support channel steel (2) is fixedly connected to the top of the vertical support angle steel (1). An adjustable inclined support channel steel assembly includes an inclined large channel steel (3) and an inclined small channel steel (4). The length of the inclined large channel steel (3) is greater than the length of the inclined small channel steel (4). The inclined small channel steel (4) is fitted inside the lower end of the inclined large channel steel (3) and connected by a first high-strength bolt (8). The upper end of the inclined large channel steel (3) is fixedly connected to the horizontal support channel steel (2), and the lower end of the inclined small channel steel (4) is connected to the vertical support channel steel (1). A vertical short steel pipe (9) is vertically installed on top of the horizontal support channel steel (2) and abuts against the outer side of the waist beam template (6).

2. The reusable and adjustable suspended triangular support frame for foundation pit support according to claim 1, characterized in that: The sides of the inclined large channel steel (3) and the inclined small channel steel (4) are respectively provided with a plurality of first bolt holes (10) for setting the first high-strength bolts (8).

3. The reusable and adjustable suspended triangular support frame for foundation pit support according to claim 2, characterized in that: The upper end of the vertical support channel steel (1) is set as an arc part, which is connected to the end of the horizontal support channel steel (2) by a second high-strength bolt (11). The lower end of the vertical support channel steel (1) is provided with a toothed groove (12), and the lower end of the inclined small channel steel (4) is provided with a third high-strength bolt (13). The third high-strength bolt (13) is placed in the toothed groove (12) of the vertical support channel steel (1).

4. The reusable and adjustable suspended triangular support frame for foundation pit support according to claim 3, characterized in that: The toothed groove (12) is set in the vertical direction. The toothed groove (12) includes a vertical barrel groove and multiple arc-shaped slots. The multiple arc-shaped slots are set on one side of the vertical barrel groove and are connected to the vertical barrel groove. The third high-strength bolt (13) is locked in the arc-shaped slot.

5. The reusable and adjustable suspended triangular support frame for foundation pit support according to claim 1, characterized in that: The horizontal support channel steel (2) has a horizontal strip adjustment groove (14) on its back. The bottom of the vertical short steel pipe (9) is connected to the horizontal strip adjustment groove (14) of the horizontal support channel steel (2) by a fourth high-strength bolt (15).

6. The reusable and adjustable suspended triangular support frame for foundation pit support according to claim 1, characterized in that: The back of the vertical support channel steel (1) has two vertical strip adjustment grooves (15), and the expansion bolts (5) are set in the vertical strip adjustment grooves (15).

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