Reinforced passive supporting structure based on U-shaped steel support

Abstract

The utility model relates to the field of roadway or tunnel supporting, and discloses a reinforced passive supporting structure based on U-shaped steel supports, which comprises a plurality of U-shaped steel supports arranged in a roadway at intervals, supporting plates extending out of two sides of the supports are welded on the bottom surfaces of arc-shaped sections of the U-shaped steel supports, and at least one connecting cross beam is further arranged between every two adjacent U-shaped steel supports; a yielding type supporting and jacking assembly is further arranged between every two adjacent U-shaped steel supports and comprises an arc-shaped top plate, supporting columns, an arch-shaped elastic plate and a side extrusion plate, the arc-shaped top plate is arranged above the bearing plate and connected with the arch-shaped elastic plate arranged below the bearing plate through the multiple supporting columns, multiple connecting rods are arranged on the two sides of the arch-shaped elastic plate, and the side extrusion plate is connected with the arc-shaped top plate through the multiple connecting rods. The connecting rods penetrate through the cross beams and are connected with the side extrusion plates, and the arc-shaped top plates and the side extrusion plates jointly support the tunnel vault between the U-shaped steel supports. The yielding type supporting and jacking assembly is arranged between the U-shaped steel supports, so that the supporting reliability between the U-shaped steel supports is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of lane or tunnel support, in particular to a reinforced passive support structure based on a U-shaped steel bracket. Background Art

[0002] U-shaped steel support is a passive support for roadway or tunnel support. It has high tensile strength and compressive strength, good toughness, high supporting force, high support strength, and can be used multiple times. It is widely used in deep, complex and soft rock roadways or tunnels.

[0003] At present, for deep complex or soft rock lanes or tunnels, there is no independent compression support structure designed between U-shaped steel supports. Relying solely on anchor rods and protective nets to protect the arch of the lane or tunnel is not enough to ensure the safety and reliability of the support.

[0004] Based on this, the present application provides a reinforced passive support structure based on a U-shaped steel bracket, which is safer and more reliable. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art. To this end, the utility model provides a reinforced passive support structure based on a U-shaped steel bracket with safer and more reliable support.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] Provided is a reinforced passive support structure based on U-shaped steel brackets, comprising a plurality of U-shaped steel brackets arranged at intervals in a tunnel, wherein the bottom surface of the arc section of the U-shaped steel bracket is welded with a support plate extending from both sides of the bracket, and at least one connecting crossbeam is provided between two adjacent U-shaped steel brackets; a compression-type top support assembly is also provided between two adjacent U-shaped steel brackets, comprising an arc-shaped top plate, a support column, an arched elastic plate and a side extrusion plate, wherein the arc-shaped top plate is arranged above the support plate, and is connected to the arched elastic plate arranged below the support plate through a plurality of support columns, and a plurality of connecting rods are provided on both sides of the arched elastic plate, wherein the connecting rods penetrate the crossbeam and are connected to the side extrusion plates, and the arc-shaped top plate and the side extrusion plates together form a support for the tunnel arch between the U-shaped steel brackets.

[0008] Preferably, the arched elastic plate is made of spring steel.

[0009] Preferably, a plurality of weight-reducing holes are provided on the arc-shaped top plate.

[0010] Preferably, the arc length of the support plate is not greater than the arc length of the arc-shaped top plate.

[0011] In a preferred embodiment of the utility model, both sides of the arc-shaped top plate are connected to the support plate through a plurality of vertically arranged bolts, and springs are sleeved on the bolts between the support plate and the arc-shaped top plate.

[0012] In a preferred embodiment of the utility model, the side extrusion plate is also fixed to the inner wall of the tunnel by a plurality of horizontal anchor rods.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges the pressure-yielding support top assembly between the U-shaped steel supports. When the surrounding rock of the arch is deformed, the arc-shaped top plate can be displaced under pressure, and the pressure can be transmitted to the arch elastic plate while being compressed. The pressure is transmitted to the side extrusion plate by utilizing the deformation of the arch elastic plate, thereby realizing the support of the arch side wall by utilizing the arch pressure, thereby effectively improving the support effect. The arc-shaped top plate itself also has the characteristic of "first yielding and then resisting" (i.e. first yielding and then resisting), and cooperates with the side extrusion plate to realize the support of the arch, thereby ensuring the support reliability between the U-shaped steel supports. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 This is a front view of the reinforced passive support structure based on the U-shaped steel bracket provided by the utility model;

[0017] Figure 2 yes Figure 1 AA section view of the reinforced passive support structure based on U-shaped steel bracket is provided.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1—U-shaped steel bracket, 2—support plate, 4—arc-shaped top plate, 5—support column, 6—arched elastic plate, 6.1—connecting rod, 7—side extrusion plate, 8—bolt, 9—spring, 10—horizontal anchor rod. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; the terms "install", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] Embodiment 1

[0025] This embodiment provides a reinforced passive support structure based on a U-shaped steel bracket. Figure 2 As shown, it includes a plurality of U-shaped steel brackets 1 arranged at intervals in a lane or tunnel and a yielding type support top assembly arranged between two adjacent U-shaped steel brackets 1, wherein:

[0026] like Figure 2 As shown, the bottom surface of the arc section of the U-shaped steel bracket 1 is welded with a support plate 2 extending from both sides of the bracket, and at least one connecting crossbeam 3 is provided between two adjacent U-shaped steel brackets 1. The support plate can enhance the bending strength of the U-shaped steel bracket on the one hand, and can also serve as a limit support for the pressure-type support top assembly on the other hand; the crossbeam serves as a connecting piece of the U-shaped steel bracket and can also serve as a supporting piece of the pressure-type support top assembly.

[0027] As attached Figure 1 and attached Figure 2As shown, the yield type support top assembly includes an arc top plate 4, a support column 5, an arched elastic plate 6 and a side extrusion plate 7. The arc top plate 4 is arranged above the support plate 2, and is connected to the arched elastic plate 6 arranged below the support plate 2 through a plurality of support columns 5. A plurality of connecting rods 6.1 are arranged on both sides of the arched elastic plate 6, and the connecting rods 6.1 penetrate the cross beam 3 and are connected to the side extrusion plate 7. This design enables the arc top plate to produce displacement under pressure (the displacement limit is that the arc top plate contacts the support plate), and transmits the pressure to the arched elastic plate, and utilizes the deformation of the arched elastic plate to transmit the pressure to the side extrusion plate, so as to realize the arch side support by compressing the arch side wall with the arch pressure, thereby effectively improving the support effect, and the arc top plate itself also has the characteristic of "yielding first and then resisting" (i.e., yielding pressure first and then resisting pressure), and cooperates with the side extrusion plate to realize the support of the arch top, thereby ensuring the support reliability between the U-shaped steel brackets.

[0028] Preferably, the arched elastic plate 6 is made of spring steel.

[0029] Preferably, the arc-shaped top plate 4 is provided with a plurality of weight-reducing holes (not shown in the figure), which can reduce the weight of the arc-shaped top plate, save manufacturing materials, and reduce manufacturing costs.

[0030] Preferably, the arc length of the support plate 2 is not greater than the arc length of the arc-shaped top plate 4 .

[0031] Embodiment 2

[0032] Based on the first embodiment, as shown in the attached Figure 1 and attached Figure 2 As shown, in this embodiment, the two sides of the arc-shaped top plate 4 are connected to the support plate 2 by multiple vertically arranged bolts 7, and springs 9 are sleeved on the bolts 8 between the support plate 2 and the arc-shaped top plate 4. This design allows the arc-shaped top plate to be supported by the support plate, the arched elastic plate does not bear the weight of the arc-shaped top plate, and the spring can also play a buffering role. At the same time, this structure can make the arc-shaped top plate have reliable position stability, and its moving direction is fixed even under pressure.

[0033] Embodiment 3

[0034] Based on the first or second embodiment, as shown in the attached Figure 1 As shown, the side extrusion plate 7 of this embodiment is also fixed to the inner wall of the tunnel by a plurality of horizontal anchor rods 10, which can improve the supporting effect of the side extrusion plate on the one hand, and prevent the arched elastic plate from bearing the weight of the side extrusion plate on the other hand.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reinforced passive support structure based on a U-shaped steel support, comprising a plurality of U-shaped steel supports arranged at intervals in a tunnel, characterized in that: The bottom surface of the arc section of the U-shaped steel bracket is welded with a support plate extending from both sides of the bracket, and at least one connecting beam is provided between two adjacent U-shaped steel brackets; A compression-type support top assembly is also provided between two adjacent U-shaped steel supports, which includes an arc-shaped top plate, support columns, an arched elastic plate and a side extrusion plate. The arc-shaped top plate is provided above the support plate, and is connected to the arched elastic plate provided below the support plate through a plurality of support columns. A plurality of connecting rods are provided on both sides of the arched elastic plate, and the connecting rods pass through the cross beam and are connected to the side extrusion plate. The arc-shaped top plate and the side extrusion plate together form a support for the arch of the tunnel between the U-shaped steel supports.

2. The reinforced passive support structure based on the U-shaped steel bracket according to claim 1 is characterized in that: Both sides of the arc-shaped top plate are connected to the support plate through a plurality of vertically arranged bolts, and springs are sleeved on the bolts between the support plate and the arc-shaped top plate.

3. The reinforced passive support structure based on the U-shaped steel bracket according to claim 1 is characterized in that: The arched elastic plate is made of spring steel.

4. The reinforced passive support structure based on the U-shaped steel bracket according to claim 1 is characterized in that: The arc-shaped top plate is provided with a plurality of weight-reducing holes.

5. The reinforced passive support structure based on U-shaped steel bracket according to claim 1 is characterized in that: The arc length of the support plate is not greater than the arc length of the arc-shaped top plate.

6. The reinforced passive support structure based on U-shaped steel bracket according to claim 1 is characterized in that: The side extrusion plate is also fixed to the inner wall of the tunnel through a plurality of horizontal anchor rods.

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