A gas tunnel non-moving fire supporting steel frame

Abstract

The utility model relates to a gas tunnel construction technical field, especially a kind of gas tunnel's non-moving fire supporting steel frame, including section steel frame, connecting rod and anchor pipe, multiple section steel frames are arranged along the length direction of tunnel interval;Positioning sleeve is equipped on section steel frame, connecting rod both ends have elbow section, two elbow sections are inserted into the positioning sleeve of adjacent two section steel frames respectively;It further includes the gasket of setting in section steel frame lower part, anchor pipe is located at the both sides of section steel frame, and anchor pipe is detachably connected on gasket.The welding connection mode of traditional supporting steel frame is improved, the elbow section of connecting rod is inserted into positioning sleeve, anchor pipe is detachably connected on gasket, welding operation is not used between adjacent section steel frames, between section steel frame and anchor pipe, the technical difficulty of gas tunnel non-moving welding operation is solved, explosion or fire risk, such as safety risk, existing in initial supporting steel frame in gas tunnel is effectively avoided, and the construction safety of gas tunnel is protected.

Description

Technical Field

[0001] This utility model relates to the field of gas tunnel construction technology, and in particular to a non-fire-resistant support steel frame for gas tunnels. Background Technology

[0002] In general, during the initial support steel frame construction of tunnels, steel mesh, longitudinal connecting steel bars, and anchor bolts (pipes) are connected and fixed using welding. However, when the tunnel enters a high-gas section, gas can easily accumulate inside the tunnel, and once it encounters a source of ignition, it can easily explode or cause a fire, leading to a major construction safety accident. Therefore, how to avoid welding operations inside high-gas tunnels during the initial support steel frame construction has become an urgent technical problem to be solved in this field. Utility Model Content

[0003] The purpose of this utility model is to address the problem of how to avoid welding operations inside high-gas tunnels during the initial support steel frame construction in the background art, and to provide a non-fire-resistant support steel frame for gas tunnels.

[0004] This utility model provides a non-fire-resistant support steel frame for a gas tunnel, including a steel frame, connecting rods and anchor pipes, with multiple steel frames arranged at intervals along the tunnel length direction;

[0005] The steel frame is provided with a positioning sleeve, and the connecting rod has bent sections at both ends. The two bent sections are respectively inserted into the positioning sleeves of two adjacent steel frames.

[0006] It also includes a pad plate disposed at the lower part of the steel frame, the anchor pipes are located on both sides of the steel frame, and the anchor pipes are detachably connected to the pad plate.

[0007] By installing positioning sleeves on the steel frame and connecting rods with bent sections at both ends, the two bent sections of the connecting rods are inserted into the positioning sleeves of two adjacent steel frames, thereby achieving the connection between two adjacent steel frames, so that multiple steel frames can be connected together in sequence to form a support steel frame; furthermore, a pad is provided at the bottom of the steel frame, and anchor pipes are located on both sides of the steel frame, and the anchor pipes are detachably connected to the pad, thereby increasing the stability of the steel frame;

[0008] The non-fire-welded support steel frame proposed in this application improves upon the traditional welding connection method of support steel frames by using a connection method in which the bent section of the connecting rod is inserted into the positioning sleeve and the anchor pipe is detachably connected to the pad. This eliminates the need for welding between adjacent steel frames and between the steel frame and the anchor pipe, solving the technical difficulties of non-fire-welded operations in gas tunnels. It effectively avoids the safety risks of explosions or fires associated with open flame welding of the initial support steel frame in high-gas tunnels, and effectively protects the construction safety of gas tunnels.

[0009] Preferably, the pad is provided with a limiting sleeve, and the anchor pipe is detachably connected to the limiting sleeve.

[0010] Preferably, the limiting sleeves are located on both sides of the steel frame.

[0011] Preferably, one end of the anchor pipe has a threaded section, which passes through the limiting sleeve and is fixed to the pad by a nut.

[0012] Preferably, the limiting sleeve is inclined downwards.

[0013] Preferably, the system also includes a mesh panel located between two adjacent steel frames and the mesh panel is tied to the connecting rod.

[0014] Preferably, a plurality of positioning sleeves are arranged vertically at intervals along the height direction of the steel frame.

[0015] Preferably, two adjacent steel frames are connected by at least two connecting rods.

[0016] Preferably, it further includes a bending plate disposed at the lower part of the steel frame, wherein the bending plate and the steel frame form an upward-opening clamp, and the pad is inserted into the clamp.

[0017] Preferably, the bending plate includes a bottom plate and a side plate connected to each other, the bottom plate is connected to the steel frame, the side plate is parallel to the steel frame, and the clamp is formed between the bottom plate, the side plate and the steel frame;

[0018] The side plate is also provided with threaded holes, and positioning bolts are connected to the threaded holes. The pad is provided with through holes, and one end of the positioning bolt passes through the threaded holes and the through holes in sequence and abuts against the steel frame.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The non-fire-resistant support steel frame of this application achieves connection between adjacent steel frames by setting positioning sleeves on the steel frame and having bent sections at both ends of the connecting rod. The two bent sections of the connecting rod are inserted into the positioning sleeves of two adjacent steel frames, thereby connecting multiple steel frames sequentially to form a support steel frame. Furthermore, a pad is provided at the bottom of the steel frame, and anchor pipes are located on both sides of the steel frame. The anchor pipes are detachably connected to the pad, which increases the stability of the steel frame. This non-fire-resistant support steel frame improves the traditional welding connection method of support steel frames by using a connection method where the bent sections of the connecting rod are inserted into the positioning sleeves and the anchor pipes are detachably connected to the pad. This eliminates the need for welding between adjacent steel frames and between the steel frame and the anchor pipe, solving the technical difficulties of non-fire-resistant welding in gas tunnels. It effectively avoids the safety risks of explosions or fires caused by hot welding of the initial support steel frame in high-gas tunnels, and effectively protects the construction safety of gas tunnels. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection of the support steel frame.

[0022] Figure 2 This is a schematic diagram of the connection between the anchor pipe and the steel frame. Figure 1 (3D view).

[0023] Figure 3 This is a schematic diagram of the connection between the anchor pipe and the steel frame. Figure 2 (Top view).

[0024] Figure 4 This is a structural diagram of the connecting rod.

[0025] Figure 5 This is a schematic diagram of a support steel frame with bent plates.

[0026] Figure 6 This is a schematic diagram showing the fit between the bending plate and the pad.

[0027] Figure 7 yes Figure 6 A magnified view of part A.

[0028] Marked in the image:

[0029] Type 1 steel frame,

[0030] 2-Connecting rod,

[0031] 21 - Elbow section, 22 - Straight rod section

[0032] 3-Anchor pipe,

[0033] 31-Threaded section,

[0034] 4-Positioning sleeve,

[0035] 5-Plate,

[0036] 51-Through hole,

[0037] 6-Limit sleeve,

[0038] 7-nut,

[0039] 8-Bending plate,

[0040] 81-Base plate, 82-Side plate, 83-Threaded hole

[0041] 10-Clamping opening,

[0042] 20 - Locating bolt. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0044] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are set as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," "parallel," or "coaxial" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0046] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0047] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0048] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0049] Example 1

[0050] like Figures 1-4 As shown, this embodiment discloses a non-fire-resistant support steel frame for a gas tunnel, including a steel frame 1, a connecting rod 2, and an anchor pipe 3, with multiple steel frames 1 arranged at intervals along the tunnel length direction;

[0051] The steel frame 1 is provided with a positioning sleeve 4, and the connecting rod 2 has elbow sections 21 at both ends. The two elbow sections 21 are respectively inserted into the positioning sleeves 4 of two adjacent steel frames 1.

[0052] It also includes a pad 5 set at the bottom of the steel frame 1, and anchor pipes 3 located on both sides of the steel frame 1, and the anchor pipes 3 are detachably connected to the pad 5.

[0053] In this embodiment, the non-fire-resistant support steel frame is constructed by installing positioning sleeves 4 on the steel frame 1 and connecting rods 2 with bent sections 21 at both ends. The two bent sections 21 of the connecting rods 2 are inserted into the positioning sleeves 4 of two adjacent steel frames 1, thereby achieving the connection between adjacent steel frames 1. This allows multiple steel frames 1 to be sequentially connected together to form a support steel frame. Furthermore, a pad 5 is provided at the lower part of the steel frame 1, and anchor pipes 3 are located on both sides of the steel frame 1. The anchor pipes 3 are detachably connected to the pad 5, thereby increasing the stability of the steel frame 1. In this embodiment, the non-fire-welded support steel frame improves upon the traditional welding connection method of the support steel frame by using a connection method in which the bent section 21 of the connecting rod 2 is inserted into the positioning sleeve 4 and the anchor pipe 3 is detachably connected to the pad plate 5. This eliminates the need for welding between adjacent steel frames 1 and between the steel frame 1 and the anchor pipe 3, thus solving the technical difficulties of non-fire-welded operations in gas tunnels. It effectively avoids the safety risks of explosions or fires caused by open-fire welding of the initial support steel frame in high-gas tunnels, and effectively protects the construction safety of gas tunnels.

[0054] In one or more implementations, such as Figure 2 , Figure 3 As shown, a limiting sleeve 6 is provided on the pad 5, and the anchor pipe 3 is detachably connected to the limiting sleeve 6. By detachably connecting the anchor pipe 3 to the pad 5, a non-fired connection is achieved between the anchor pipe 3 and the steel frame 1.

[0055] Furthermore, the limiting sleeve 6 is located on both sides of the steel frame 1.

[0056] Limiting sleeves 6 are set on both sides of the steel frame 1, and anchor pipes 3 are connected to the limiting sleeves 6, so that the anchor pipes 3 are located on both sides of the steel frame 1. After the initial support concrete is poured, the steel frame 1 is effectively supported by the anchor pipes 3 on both sides of the steel frame 1.

[0057] Furthermore, this allows the anchor pipe 3 to be anchored to the steel frame 1 from both sides, ensuring that the steel frame 1 is subjected to balanced forces on both sides. This prevents the steel frame 1 from tilting or deforming due to uneven load caused by unilateral anchoring, effectively improving the overall stability of the steel frame 1 and the reliability of the support.

[0058] Specifically, such as Figure 3 As shown, one end of the anchor pipe 3 has a threaded section 31, which passes through the limiting sleeve 6 and is fixed to the pad 5 by the nut 7.

[0059] Furthermore, the limiting sleeve 6 is set to tilt downwards.

[0060] In an optional embodiment, a mesh panel is also included, which is located between two adjacent steel frames 1 and is tied to the connecting rod 2.

[0061] The mesh is located between two adjacent steel frames 1. After the initial support concrete is poured, the mesh can protect the tunnel sidewall. The mesh is tied to the connecting rod 2, avoiding the welding operation of traditional mesh and realizing non-fired construction.

[0062] In this implementation, the mesh is a steel mesh.

[0063] In optional implementations, such as Figure 1 As shown, multiple positioning sleeves 4 are vertically spaced along the height direction of the steel frame 1.

[0064] By vertically arranging multiple positioning sleeves 4 at intervals along the height direction of the steel frame 1, adjacent steel frames 1 can be connected at different height positions by connecting rods 2.

[0065] In optional implementations, such as Figure 1 As shown, two adjacent steel frames 1 are connected by at least two connecting rods 2.

[0066] In optional implementations, such as Figure 4 As shown, the connecting rod 2 includes a straight rod section 22, with a bent section 21 connected to each end of the straight rod section 22.

[0067] Furthermore, the connecting rod 2 is a longitudinally arranged steel bar with its two ends bent.

[0068] In an optional embodiment, the positioning sleeve 4 is a steel sleeve, which is pre-welded to the steel frame 1 outside the tunnel.

[0069] In an optional embodiment, the limiting sleeve 6 is a steel sleeve.

[0070] This embodiment also discloses a construction process for a fire-resistant support steel frame, specifically as follows:

[0071] (1) Mesh connection method: The mesh is welded and formed on the mold according to the design mesh size in the steel bar processing plant. After the initial shotcrete is completed, the mesh is hung. The mesh uses HPBφ6mm steel bars and the mesh size is 25×25cm. The mesh is laid out on the outer arc of the steel frame 1. The mesh is connected to the connecting rod 2 by steel wire binding.

[0072] (2) Fixing method of connecting rod 2: The connecting rod 2 connects two adjacent steel frames 1 into a whole using positioning sleeves 4. The connecting rod 2 is made of φ22 steel bar, and the positioning sleeve 4 is made of φ32 steel sleeve. The connecting rod 2 is arranged with a circumferential spacing of 1m. The positioning sleeve 4 is fully welded to the web of the I-beam on the rock surface side. The bent section of the longitudinal connecting rod 2 is inserted into the positioning sleeve 4 from top to bottom, and a pin is used to form a fixed connection to achieve the effect of preventing it from falling off.

[0073] (3) Anchor pipe 3 connection method: In order to ensure the overall rigidity of the steel frame 1, when the steel frame 1 is made, the limiting sleeve 6 and the pad are first welded to the steel frame 1 outside the tunnel. The anchor pipe 3 and the steel frame 1 are connected together through the limiting sleeve, the pad 5, and the nut 7. The pad 5 and the steel frame 1 can be fixed by full welding on all four sides outside the tunnel.

[0074] Example 2

[0075] like Figures 5-7 As shown, compared with Embodiment 1, the non-fire-supported steel frame for a gas tunnel in this embodiment also includes a bent plate 8 provided at the lower part of the steel frame 1, and an upward-opening clamp 10 is formed between the bent plate 8 and the steel frame 1, with a pad 5 inserted into the clamp 10.

[0076] like Figure 5 , Figure 6 As shown, a clamping opening 10 is formed between the bent plate 8 and the steel frame 1, and the pad 5 is inserted into the clamping opening 10, so that the pad 5 can be installed on the steel frame 1.

[0077] Furthermore, outside the tunnel, the bent plate 8 is first welded to the steel frame 1 and the anchor pipe 3 is fixed to the pad 4. After the steel frame 1 is installed inside the tunnel, the pad 4 is inserted into the clamp 10, thus achieving a non-fired connection between the anchor pipe 3 and the steel frame 1.

[0078] Compared with the method of first connecting the pad 5 to the steel frame 1 and then installing the anchor pipe 3 in the tunnel, this embodiment sets a clamp 10 on the steel frame 1 and then inserts the pad 5 with the anchor pipe 3 installed into the clamp 10. This method is more convenient to install in the tunnel, has a shorter operation time, and is more efficient.

[0079] Furthermore, such as Figure 7 As shown, the bending plate 8 includes a bottom plate 81 and a side plate 82 connected to each other. The bottom plate 81 is welded to the steel frame 1, and the side plate 82 is parallel to the steel frame 1. A clamp 10 is formed between the bottom plate 81, the side plate 82 and the steel frame 1.

[0080] The side plate 82 is also provided with a threaded hole 83, and a positioning bolt 20 is connected to the threaded hole 83. The pad 5 is provided with a through hole 51. One end of the positioning bolt 20 passes through the threaded hole 83 and the through hole 51 in sequence and abuts against the steel frame 1.

[0081] The positioning bolt 20 passes through the side plate 82 and the pad 5 and abuts against the steel frame 1, thereby fixing the pad 5 firmly.

[0082] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A non-moving fire support steel frame of a gas tunnel, characterized in that, It includes a steel frame (1), a connecting rod (2) and an anchor pipe (3), and multiple steel frames (1) are arranged at intervals along the length of the tunnel; The steel frame (1) is provided with a positioning sleeve (4), and the connecting rod (2) has elbow sections (21) at both ends. The two elbow sections (21) are respectively inserted into the positioning sleeves (4) of two adjacent steel frames (1). It also includes a pad (5) set at the lower part of the steel frame (1), the anchor pipe (3) is located on both sides of the steel frame (1), and the anchor pipe (3) is detachably connected to the pad (5).

2. A non-combustible steel support frame for a gas tunnel according to claim 1, characterized in that, The pad (5) is provided with a limiting sleeve (6), and the anchor pipe (3) is detachably connected to the limiting sleeve (6).

3. The non-fire-resistant support steel frame for a gas tunnel according to claim 2, characterized in that, The limiting sleeve (6) is located on both sides of the steel frame (1).

4. The non-fire-resistant support steel frame for a gas tunnel according to claim 3, characterized in that, The anchor pipe (3) has a threaded section (31) at one end, which passes through the limiting sleeve (6) and is fixed to the pad (5) by a nut (7).

5. A non-fire-resistant support steel frame for a gas tunnel according to claim 4, characterized in that, The limiting sleeve (6) is set at a downward angle.

6. The non-fire-resistant support steel frame for a gas tunnel according to claim 5, characterized in that, It also includes a mesh panel located between two adjacent steel frames (1) and the mesh panel is tied to the connecting rod (2).

7. A non-fire-resistant support steel frame for a gas tunnel according to claim 1, characterized in that, Along the height direction of the steel frame (1), a plurality of positioning sleeves (4) are arranged vertically at intervals.

8. A non-fire-resistant support steel frame for a gas tunnel according to claim 7, characterized in that, The two adjacent steel frames (1) are connected by at least two connecting rods (2).

9. A non-fire-resistant support steel frame for a gas tunnel according to any one of claims 1-8, characterized in that, It also includes a bent plate (8) provided at the lower part of the steel frame (1), and a clamp (10) with an upward opening is formed between the bent plate (8) and the steel frame (1), and the pad (5) is inserted into the clamp (10).

10. A non-fire-resistant support steel frame for a gas tunnel according to claim 9, characterized in that, The bending plate (8) includes a bottom plate (81) and a side plate (82) connected to each other. The bottom plate (81) is connected to the steel frame (1), and the side plate (82) is parallel to the steel frame (1). The clamp (10) is formed between the bottom plate (81), the side plate (82) and the steel frame (1). The side plate (82) is also provided with a threaded hole (83), and a positioning bolt (20) is connected to the threaded hole (83). The pad (5) is provided with a through hole (51). One end of the positioning bolt (20) passes through the threaded hole (83) and the through hole (51) in sequence and abuts against the steel frame (1).

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