Construction support for tunnel concrete surface protection

Abstract

The utility model relates to a tunnel concrete surface protection construction support which comprises a vertical rod, an inclined rod, a transverse rod, a connecting rod and a protective fence, the vertical rod is connected with the inclined rod, the transverse rod and the connecting rod, the vertical rod, the connecting rod and the inclined rod form two triangular supports arranged in parallel, the transverse rod and the connecting rod form a working face on the tops of the triangular supports, and the protective fence is installed on the top of the working face. The cross rod used for abutting against the side wall of the tunnel is a fixed rod, and a tangent plane matched with the arc face of the tunnel is arranged on the fixed rod. The support is erected by means of the arc-shaped tunnel reverse arc section and the stress characteristics of the support, the occupied area of the support is small, a working face needed by construction is erected under the condition that transportation of materials in the tunnel is not affected, good stability and safety are achieved, and orderly on-site construction is further guaranteed.

Description

Technical Field

[0001] The present application relates to the field of engineering construction technology, and in particular to a construction support for tunnel concrete surface protection. Background Art

[0002] In order to increase the stability and bearing capacity of the structure, tunnels are usually designed in an arch shape. When the arch structure is subjected to vertical loads, it will transfer the force to the supporting rocks or concrete walls on both sides, forming evenly distributed pressure, improving the stability and bearing capacity of the structure, allowing the tunnel to withstand greater weight and pressure, and reducing the risk of damage due to excessive stress.

[0003] During the tunnel construction process, due to the tunnel's arc-shaped structure, the ground construction work surface is limited. During the construction of the tunnel concrete surface protection, it is necessary to set up construction scaffolding to provide a working surface to assist construction workers in construction, and at the same time provide certain safety protection for construction workers.

[0004] Due to the limited space inside the tunnel, traditional construction scaffolding takes up a large amount of space after being erected, seriously affecting the transportation of materials and the passage of personnel inside the tunnel, and posing a great safety risk. It is necessary to invent a construction scaffold that occupies a small space, achieves a stable erection on the working surface, and ensures the safety of workers during construction. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a construction support for tunnel concrete surface protection, which utilizes the anti-arc section of the circular tunnel surface and the force characteristics of the support to provide a construction working surface.

[0006] The first aspect of the present application provides a construction support for tunnel concrete surface protection, including vertical poles, diagonal poles, horizontal poles, connecting rods and guardrails. The vertical poles are connected to the diagonal poles, horizontal poles and connecting rods. The vertical poles, connecting rods and diagonal poles form two parallel triangular brackets. The horizontal poles and connecting rods form a working surface at the top of the triangular bracket. A guardrail is installed on the top of the working surface. The horizontal pole used to abut against the side wall of the tunnel is a fixed pole, and the fixed pole is provided with a cut surface that matches the curved surface of the tunnel.

[0007] Optionally, in some embodiments of the first aspect,

[0008] The fixing rod is rotatably connected to the triangular bracket. An installation hole is opened at the end of the triangular bracket. The fixing rod is inserted into the installation hole and is locked at both ends of the fixing rod by nuts.

[0009] Optionally, in some embodiments of the first aspect,

[0010] A flat washer is installed on the inside of the mounting hole.

[0011] Optionally, in some embodiments of the first aspect,

[0012] The cut surface is provided with anti-slip grooves or an anti-slip pad is installed.

[0013] Optionally, in some embodiments of the first aspect,

[0014] The guardrail includes a protective crossbar and a protective vertical pole. The protective vertical pole is vertically installed on the crossbar, and the protective crossbar is connected to the protective vertical pole to form a protective structure.

[0015] Optionally, in some embodiments of the first aspect,

[0016] The construction support also includes a support plate, which is laid on the working surface.

[0017] Optionally, in some embodiments of the first aspect,

[0018] A ladder is provided between the working surface and the ground.

[0019] The technical solution provided by this application may have the following beneficial effects:

[0020] The utility model provides a support for the construction of tunnel concrete surface protection. The support is set up by utilizing the arc-shaped tunnel anti-arc section and the support force characteristics. The support occupies a small area and can realize the construction of the working surface required without affecting the transportation of materials in the tunnel. It has good stability and safety, and further ensures the orderly progress of on-site construction.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0023] Figure 1 This is a schematic structural diagram of a support structure for tunnel concrete surface protection according to an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the structure of a fixing rod for a tunnel concrete surface protection construction support shown in an embodiment of the present application;

[0025] Reference numerals:

[0026] In the figure, 1-main body vertical pole, 2-diagonal pole, 3-bottom pole, 4-connecting horizontal pole, 5-connecting rod, 6-ladder, 7-fixing pole, 8-protective horizontal pole, 9-protective vertical pole, 10-support plate. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0028] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore cannot be understood as a limitation on this application.

[0030] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0031] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] like Figure 1 The shown support for tunnel concrete surface protection construction includes: vertical poles, diagonal poles 2, cross poles, connecting rods 5, guardrails and support plates 10. The vertical poles include main vertical poles 1 and protective vertical poles 9, and the cross poles include connecting cross poles 4, protective cross poles 8 and fixed poles 7.

[0033] Two parallel main columns 1 are connected at their tops by a connecting crossbar 4. Connecting rods 5 and diagonal rods 2 are connected to the main columns 1, forming a right triangle with the main columns 1, connecting rods 5, and diagonal rods 2. The highest point of the hypotenuse of the triangle is connected by a fixing rod 7, and the lowest point is connected by a bottom rod 3. A connecting crossbar 4 is also connected in the middle for reinforcement.

[0034] The connecting crossbar 4, the connecting rod 5 and the fixing rod 7 form a working surface on the top of the triangular bracket. A plurality of connecting crossbars 4 for improving the supporting force are also installed in the working surface. A support plate 10 is laid on the working surface. The support plate 10 is made of wooden laminate to prevent slipping.

[0035] A guardrail is installed at the top of the work surface. It consists of a horizontal guardrail 8 and vertical guardrails 9. The vertical guardrails 9 are installed vertically on the work surface, and the horizontal guardrails 8 are connected between the vertical guardrails 9 to form a protective fence. When workers are working on the work surface, the guardrails block and protect them, preventing them from falling during operation. A small horizontal bar is welded between the main vertical guardrails 1 to form a ladder 6, making it easier for workers to get on and off the work surface.

[0036] Since the fixing rod 7 needs to abut against the tunnel side wall, which has a certain curvature, a section that matches the tunnel curvature is provided on the triangular bracket section of the fixing rod 7. The side view of the fixing rod 7 is as follows: Figure 2 The cut surface increases the contact area between the fixing rod 7 and the tunnel sidewall, improving the stability of the bracket. Anti-slip grooves or anti-slip pads are installed on the cut surface, effectively increasing the friction between the fixing rod 7 and the tunnel, preventing the bracket from shifting.

[0037] In one implementation of this embodiment, the curvature of the tunnel arch may vary depending on different road sections and different mountain types. The designer will comprehensively consider factors such as the geological conditions, groundwater conditions, load conditions, and the required safety, stability, and construction feasibility of the tunnel to determine the appropriate arch curvature. In the case of different road sections or different mountain types, the curvature may need to be adjusted to adapt to different geological and engineering conditions. In order to ensure that the cross-section of the fixing rod 7 is more consistent with the tunnel, the fixing rod 7 is rotatably connected to the triangular bracket.

[0038] Mounting holes are created at the ends of the triangular brackets, the size and shape of which match those of the fixing rod 7. During installation, the fixing rod 7 is threaded through the two mounting holes, ensuring that it can rotate freely within the holes. Flat washers are installed inside the mounting holes to increase friction between the bracket and the crossbar and reduce frictional resistance to the crossbar's rotation. The fixing rod 7 is threaded at both ends. After adjusting the angle, secure the fixing rod 7 to the bracket using nuts.

[0039] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0041] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A construction support for tunnel concrete surface protection, characterized in that: include: Vertical poles, diagonal poles, cross poles, connecting rods and guardrails, the vertical poles are connected to the diagonal poles, cross poles and connecting rods, the vertical poles, connecting rods and diagonal poles form two parallel triangular brackets, the cross poles and connecting rods form a working surface on the top of the triangular brackets, the guardrails are installed on the top of the working surface, the cross poles used to abut against the side walls of the tunnel are fixed poles, and the fixed poles are provided with a section that matches the curved surface of the tunnel.

2. The support for tunnel concrete surface protection construction according to claim 1 is characterized in that: The fixing rod is rotatably connected to the triangular bracket. An installation hole is provided at the end of the triangular bracket. The fixing rod is inserted into the installation hole. Both ends of the fixing rod are locked by nuts.

3. The support for tunnel concrete surface protection construction according to claim 2 is characterized in that: A flat washer is installed on the inner side of the installation hole.

4. The support for tunnel concrete surface protection construction according to claim 1 is characterized in that: The cut surface is provided with anti-skid grooves or is installed with an anti-skid pad.

5. The support for tunnel concrete surface protection construction according to claim 1 is characterized in that: The guardrail includes a guard crossbar and a guard upright bar. The guard upright bar is vertically mounted on the crossbar. The guard crossbar is connected to the guard upright bar to form a guard structure.

6. The support for tunnel concrete surface protection construction according to claim 1 is characterized in that: The construction support further comprises a supporting plate, which is laid on the working surface.

7. The support for tunnel concrete surface protection construction according to claim 1 is characterized in that: A ladder is provided between the working surface and the ground.

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