Construction structure for mounting, adjusting and temporarily supporting steel arch

Abstract

The utility model relates to a construction structure for installing, adjusting and temporarily supporting a steel arch. A steel arch installing and adjusting device comprises an upper supporting body, a lower supporting body and a middle adjustable area. The middle adjustable area comprises a telescopic rod, a connecting plate and a small electric hydraulic jack, a small hydraulic lifting system is formed in the middle adjustable area, and accurate installation of the steel arch is guaranteed through hydraulic lifting; the steel arch temporary supporting structure is reinforced by adopting a temporary support; the temporary support comprises a vertical support, an inclined support and a temporary inverted arch, a closed loop is formed between the temporary inverted arch and the steel arch, and meanwhile a stable system is formed through the vertical support and the inclined support. The construction speed can be effectively increased, the steel arch mounting quality is improved, and the stability of tunnel supporting is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of tunnel support, in particular to a construction structure used for installation, adjustment and temporary support of a steel arch frame. Background Art

[0002] When excavating tunnels with complex geological conditions, a step method is typically used to reserve core soil. However, due to the limited space on the upper steps, the steel arch frame must be installed by manual lifting, and its positioning requires repeated manual adjustments, resulting in long construction times and low precision. Furthermore, as a supporting structure, the steel arch frame is susceptible to surrounding rock deformation. This is closely related to the strength of the steel arch frame. Furthermore, uneven contact between the steel arch frame and the surrounding rock can subject the steel arch frame to concentrated loads, causing deformation and jeopardizing tunnel construction safety. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems existing in the prior art and to provide a construction structure for installation, adjustment and temporary support of a steel arch frame.

[0004] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A construction structure for steel arch installation, adjustment and temporary support, comprising a steel arch installation and adjustment device and a steel arch temporary support structure;

[0006] The steel arch frame installation and adjustment device is symmetrically arranged on both sides of the steel arch frame. The steel arch frame installation and adjustment device includes an upper support body, a lower support body and a middle adjustable area. The upper support body includes a top support, a U-shaped joint, a thickened straight piece angle bracket and a middle plate. The lower support body includes a lower support and a bottom plate. The middle adjustable area includes a telescopic rod, a connecting plate and a small electric hydraulic jack.

[0007] The temporary support structure of the steel arch frame is temporarily reinforced with temporary supports. The temporary supports include oblique supports, vertical supports and temporary inverted arches. The oblique supports and vertical supports are formed by connecting the supporting steel sections through Y-type supports, T-type supports and flanges. The temporary inverted arch is formed by connecting the Y-type supports, T-type supports and the arc-shaped support steel sections on both sides with flanges.

[0008] Furthermore, the upper end of the upper support body is connected to the top support through a thickened straight piece angle code, and the upper support plate is welded to the lower end of the upper support body.

[0009] Furthermore, the fixing plate on the U-shaped joint is welded on the bottom of the top support, and the thickened straight angle code is inserted into the two limit plates of the U-shaped joint and fixed by bolt II, and the thickened straight angle code is aligned with the bolt hole on the middle plate and fixed with bolt I.

[0010] Preferably, the top support can be processed and customized according to the curvature of the steel arch, which is convenient for replacement and reuse. At the same time, the top support can be tilted by adjusting the angle between the U-shaped joint and the thickened straight piece angle bracket to fit the steel arch.

[0011] Furthermore, a lower supporting plate is welded to the upper end of the lower supporting body, and four parallel and symmetrical grooves are provided at the four corners of the lower supporting plate for placing and installing the telescopic rod, and a bottom plate is welded to the lower end of the lower supporting body.

[0012] Furthermore, ground nail holes are provided on the bottom plate. After the steel arch frame installation adjustment device is placed in the specified position, ground nails are driven into the ground nail holes. Pull rings are welded on the ground nails. After the steel arch frame is installed, the ground nails are pried out by pressing the pull rings with a crowbar.

[0013] Furthermore, the telescopic rod is placed in the groove of the lower support plate and welded, the connecting plate is installed on the side of the telescopic rod, the small electric hydraulic jack is fixed in the center of the lower support plate, and the top of the telescopic rod is welded to the upper support plate.

[0014] Furthermore, arc-shaped connecting steel plates are respectively welded to the ends of the vertical support, the oblique support and the ends on both sides of the temporary inverted arch, and the arc-shaped connecting steel plates are mounted on the steel arch frame by high-strength bolts.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0016] 1. The utility model adopts a steel arch frame installation adjustment device to fine-tune the installation position of the steel arch frame, thereby improving the installation accuracy and efficiency of the steel arch frame.

[0017] 2. The utility model forms a small hydraulic lifting system by setting up an adjustable area in the middle, and uses the lifting of the jack to complete the precise installation of the steel arch frame. At the same time, the tilt angle of the top support is adjusted through the U-shaped joint to fit the steel arch frame, ensuring the smooth installation of the steel arch frame.

[0018] 3. The utility model adopts temporary support as the temporary reinforcement system of the steel arch frame, forms a closed loop of the steel arch frame through the temporary inverted arch, and adds oblique support and vertical support to form a stable system, thereby ensuring the stability of the steel arch frame.

[0019] 4. The temporary support adopted by the utility model is connected by flanges to each supporting member, which is easy to install and dismantle and can be recycled. At the same time, it is connected to the steel arch frame by bolts, which reduces on-site welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the elevation drawing of the steel arch mounting adjustment device;

[0021] Figure 2 It is a three-dimensional diagram of the steel arch mounting adjustment device;

[0022] Figure 3 This is the structural diagram of the jacking installation;

[0023] Figure 4 This is the elevation drawing of the temporary support reinforcement of the steel arch;

[0024] Figure 5 This is a diagram of temporary support installation.

[0025] In the figure, 1. Steel arch frame; 2. Upper support body; 3. Lower support body; 4. Upper support plate; 5. Lower support plate; 6. Bottom plate; 7. Top support; 8. Telescopic rod; 9. Connecting plate; 10. Thickened straight angle bracket; 11. Bolt I; 12. U-shaped joint; 13. Bolt II; 14. Electric hydraulic jack; 15. Limiting plate; 16. Fixing plate; 17. Ground nail; 18. Ground nail hole; 19. Pull ring; 20. Temporary support; 21. Temporary inverted arch; 22. Vertical support; 23. Diagonal support; 24. Arc-shaped connecting steel plate; 25. Flange; 26. Support steel; 27. Arc-shaped support steel; 28. T-shaped support; 29. Y-shaped support; 30. Middle adjustable area; 31. High-strength bolt; 32. Middle plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0028] Example 1

[0029] like Figure 1-5As shown, a device for installing and adjusting a steel arch includes an upper support body 2, a lower support body 3, and a central adjustable area 30. The upper support body 2 is installed first, including connecting the top support 7 to the U-shaped joint 12, connecting the U-shaped joint 12 to the thickened straight angle bracket 10, and connecting the thickened straight angle bracket 10 to the middle plate 32. The lower support body 3 is then installed, including connecting the lower support 3 to the base plate 6. Finally, the central adjustable area 30 is installed, including installing the telescopic rod 8, connecting the connecting plate 9 to the telescopic rod 8, and installing the small electric hydraulic jack 14.

[0030] Specifically, the upper end of the upper support body 2 is connected to the top support 7 through a thickened straight angle code 10, and the lower end is welded to the upper support plate 4.

[0031] Among them, the fixing plate 16 on the U-shaped joint 12 is welded to the bottom of the top support 7, the thickened straight piece angle code 10 is inserted into the two limiting plates 15 of the U-shaped joint 12, and then fixed with bolts II13.

[0032] Furthermore, the thickened straight piece angle bracket 10 is aligned with the bolt hole on the middle plate 32 and then fixed with bolts I11.

[0033] It is worth mentioning that the top support 7 can be processed and customized according to the curvature of the steel arch 1, which is convenient for replacement and reuse. At the same time, the angle between the top support 7 and the thickened straight piece angle bracket 10 can be adjusted to change the tilt angle of the top support 7 so that it fits the steel arch 1.

[0034] Specifically, the lower supporting plate 5 is welded to the upper end of the lower supporting body 3 , and four parallel and symmetrical grooves are provided at the four corners of the lower supporting plate 5 for placing and installing the telescopic rod 8 , and the bottom plate 6 is welded to the lower end of the lower supporting body 3 .

[0035] Among them, ground nail holes 18 are set on the bottom plate 6. After the steel arch frame installation and adjustment device is placed at the specified position, the ground nails 17 are aligned with the ground nail holes 18 and driven into.

[0036] Preferably, a pull ring 19 is welded on the ground nail 17. After the steel arch frame 1 is installed, a crowbar is used to push against the pull ring 19 to pry out the ground nail 17.

[0037] Specifically, the central adjustable area 30 includes the telescopic rod 8, the connecting plate 9, and the small electric hydraulic jack 14. The telescopic rod 8 is inserted into the groove of the lower support plate 5 and then welded securely. The connecting plate 9 is then installed on the side of the telescopic rod 8, completing the connection. The small electric hydraulic jack 14 is then secured to the center of the lower support plate 5, and the top of the telescopic rod 8 is welded to the upper support plate 4.

[0038] A device for installing and adjusting a steel arch comprises the following steps: first, assembling a steel arch 1 on the ground, and then installing the steel arch 1 using the steel arch installation and adjustment device. The steel arch installation and adjustment devices are symmetrically arranged on both sides of the steel arch. The curved top supports 7 of the steel arch installation and adjustment device are firmly attached to the steel arch 1, and the entire structure is lifted upward. Fine adjustments are then made using a small electric hydraulic jack 14 to complete the precise installation of the steel arch 1.

[0039] Example 2

[0040] This embodiment optimizes the installed steel arch frame based on the construction steps of Example 1. A temporary support structure for the steel arch frame is provided. The temporary support 20 is used for temporary reinforcement, and a temporary inverted arch 21 is used to form a temporary closed loop. At the same time, vertical supports 22 and diagonal supports 23 are added between the steel arch frame 1 and the temporary inverted arch 21 to form a stable system.

[0041] Specifically, temporary supports 20 include diagonal supports 23, vertical supports 22, and a temporary inverted arch 21. Y-shaped supports 29 and T-shaped supports 28 are connected to support steel sections 26 using flanges 25 to form diagonal supports 23 and vertical supports 22. Y-shaped supports 29, T-shaped supports 28, and curved support steel sections 27 on both sides are connected by flanges 25 to form temporary inverted arch 21.

[0042] Furthermore, arc-shaped connecting steel plates 24 are welded to the ends of the vertical support 22 , the oblique support 23 and both side ends of the temporary inverted arch 21 , and then the arc-shaped connecting steel plates 24 are mounted on the steel arch frame 1 by high-strength bolts 31 .

[0043] Preferably, a suitable temporary support 20 is assembled according to the size and curvature of the steel arch 1. Since each supporting member is connected by a flange 25 and connected to the steel arch 1 by bolts, it is easy to dismantle and can be recycled.

[0044] The parts not described in detail in this utility model are prior art, so this utility model does not describe them in detail.

[0045] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0046] Although this article uses a lot of professional terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0047] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A construction structure for installation, adjustment and temporary support of a steel arch, characterized in that: Including steel arch installation adjustment device and steel arch temporary support structure; The steel arch frame installation and adjustment device is symmetrically arranged on both sides of the steel arch frame, and the steel arch frame installation and adjustment device includes an upper support body, a lower support body and a middle adjustable area; the upper support body includes a top support, a U-shaped joint, a thickened straight piece angle bracket and a middle plate, the lower support body includes a lower support and a bottom plate, and the middle adjustable area includes a telescopic rod, a connecting plate and a small electric hydraulic jack; The temporary support structure of the steel arch frame is temporarily reinforced by temporary support. The temporary support includes oblique support, vertical support and temporary inverted arch. The oblique support and vertical support are formed by connecting the supporting steel sections through Y-shaped support, T-shaped support and flange plates. The temporary inverted arch is formed by connecting the Y-shaped support, T-shaped support and the arc-shaped support steel sections on both sides with flange plates.

2. A construction structure for steel arch installation, adjustment and temporary support according to claim 1, characterized in that: The upper end of the upper support body is connected to the top support through a thickened straight piece angle code, and the lower end of the upper support body is welded to the upper support plate.

3. A construction structure for steel arch installation, adjustment and temporary support according to claim 2, characterized in that: The fixing plate on the U-shaped joint is welded to the bottom of the top support, and the thickened straight angle code is inserted into the two limiting plates of the U-shaped joint and fixed by bolt II. The thickened straight angle code is aligned with the bolt hole on the middle plate and fixed with bolt I.

4. A construction structure for steel arch installation, adjustment and temporary support according to claim 3, characterized in that: The upper end of the lower support body is welded with a lower supporting plate, and four parallel and symmetrical grooves are provided at the four corners of the lower supporting plate for placing and installing the telescopic rod. The lower end of the lower support body is welded with a bottom plate.

5. A construction structure for steel arch installation, adjustment and temporary support according to claim 4, characterized in that: The bottom plate is provided with ground nail holes. After the steel arch frame installation adjustment device is placed in the specified position, ground nails are aligned with the ground nail holes and driven into them. Pull rings are welded on the ground nails. After the steel arch frame is installed, the ground nails can be pried out by using a crowbar to push against the pull rings.

6. A construction structure for installation, adjustment and temporary support of a steel arch according to claim 5, characterized in that: The telescopic rod is placed in the groove of the lower support plate and welded and fixed, the connecting plate is installed on the side of the telescopic rod, the small electric hydraulic jack is fixed in the center of the lower support plate, and the top of the telescopic rod is welded to the upper support plate.

7. A construction structure for installation, adjustment and temporary support of a steel arch according to any one of claims 1 to 6, characterized in that: The ends of the vertical support, the oblique support and both side ends of the temporary inverted arch are respectively welded with arc-shaped connecting steel plates, and the arc-shaped connecting steel plates are installed on the steel arch frame through high-strength bolts.

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