Small-section tunnel lining supporting structure

Abstract

The utility model discloses a small-section tunnel lining supporting structure which mainly comprises two side wall supporting plates, an arc supporting plate and a plurality of telescopic supporting pieces, the side wall of a tunnel is supported through the side wall supporting plates, the top of each side wall supporting plate is supported on the arc supporting plate, then a side wall formwork and an arc formwork are supported, and meanwhile the telescopic supporting pieces are arranged on the side wall supporting plates. A plurality of telescopic supporting pieces are sequentially arranged on the arc supporting plate in the circumferential direction of the outer wall at intervals, so that the telescopic supporting pieces can move relative to the arc supporting plate, then the telescopic supporting pieces support the area which is not matched with the arc supporting plate, and then the arc supporting plate and the telescopic supporting pieces effectively support the arc formwork together; therefore, the supporting device is suitable for arc templates with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a small-section tunnel lining support structure. Background Art

[0002] When constructing a small-section tunnel, reinforcement ribs, arc formwork, and side wall formwork are usually installed on the inner wall surface of the tunnel, and supported by a supporting structure. Afterwards, the lining is poured into the reserved space between the formwork and the inner wall to solidify the tunnel.

[0003] In the prior art, when lining a tunnel with a smaller cross-section, the arc formwork at the top of the tunnel is usually supported by arc-shaped pipes or I-beams with matching shapes and sizes. Multiple diagonal braces and vertical braces are then provided on the underside to support the arc-shaped pipes or I-beams, and the sidewall formwork on both sides. This ensures a stable position of the formwork during pouring and a high pouring effect. However, there are still some problems with the support structure when in use:

[0004] 1. There are slight differences in the sizes of the arc-shaped inner walls at the top of the tunnel, and the supporting components supporting the arc formwork are all prefabricated components. As a result, when the supporting components support the arc formwork, the supporting components and the arc formwork cannot be adapted to each other, which in turn causes the supporting components to be unable to effectively support the arc formwork or unable to support the arc formwork.

[0005] Therefore, there is an urgent need for a support structure that can adapt to arc templates of different sizes, so as to effectively support the arc templates. Utility Model Content

[0006] The purpose of the utility model is to provide a small-section tunnel lining support structure for solving the technical problem that the supporting member cannot adapt to arc templates of different sizes and thus cannot effectively support the arc templates.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A small-section tunnel lining support structure includes two sidewall support plates disposed opposite to sidewall formwork on either side of the tunnel; an arc support plate disposed below the arc formwork at the top of the tunnel, with both ends detachably connected to the tops of the two sidewall support plates; and a plurality of telescopic support members disposed sequentially and spaced apart along the circumferential outer wall of the arc support plate, with one end facing the arc formwork and the other end passing through the plate wall of the arc support plate, the other end of the telescopic support member being disposed on the inner side of the arc support plate and facing away from the arc formwork.

[0009] When the arc support plate and the arc template do not match, one end of the telescopic support member is displaced relative to the arc support plate toward the arc template and fits with the surface of the arc template.

[0010] In some embodiments, the telescopic support member includes a supporting end plate and a threaded rod, the threaded rod passes through the arc support plate in a direction perpendicular to the arc support plate wall and is threadedly connected to the arc support plate, the supporting end plate faces the arc template and is arranged in the wall of the arc support plate.

[0011] In some embodiments, a plurality of grooves are provided on the surface of the arc support plate, a plurality of support end plates are respectively arranged in the plurality of grooves, and the other ends of the plurality of threaded rods respectively pass through the inner walls of the bottom of the plurality of grooves and are arranged on the inner side of the arc support plate.

[0012] In some embodiments, a compression spring is provided between the support end plate and the inner wall of the bottom of the groove, and the threaded rod passes through the compression spring.

[0013] In some embodiments, an elastic cushion layer is provided on the surface of the supporting end plate.

[0014] In some embodiments, a transverse support member is provided between the two side wall support plates, and both ends of the transverse support member are detachably connected to the two side wall support plates.

[0015] In some embodiments, both ends of the transverse support member are threadedly connected to the two side wall support plates.

[0016] In some embodiments, the transverse support member is arranged near the top of the side wall support plate, and a plurality of support rods are provided between the upper surface and the inner surface of the arc support plate wall.

[0017] In some embodiments, a plurality of vertical support members are provided at the bottom of the horizontal support member. The plurality of vertical support members are arranged in sequence and spaced apart and supported on the lower surface of the horizontal support member.

[0018] In some embodiments, two protrusions are provided on the circumferential outer wall of the other end of the threaded rod, and the two protrusions are arranged opposite to each other.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] In the present invention, the telescopic member is displaced relative to the arc support plate, so that the telescopic support member can support the area where the arc support plate is not suitable, and the arc support plate and multiple telescopic support members can jointly effectively support the arc template, so that the support device is suitable for arc templates of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a front cross-sectional schematic diagram of a small-section tunnel lining support structure according to an embodiment of the present application;

[0023] Figure 2 For the embodiment of this application Figure 1 An enlarged schematic diagram of the reference numeral A in FIG.

[0024] Figure 3 A schematic top view of a side wall support plate of a small-section tunnel lining support structure according to an embodiment of the present application;

[0025] Figure 4 This is a front view of a vertical support member of a small-section tunnel lining support structure according to an embodiment of the present application;

[0026] Reference numerals:

[0027] 100-side wall support plate,

[0028] 200-side wall formwork,

[0029] 300-arc support plate, 310-groove,

[0030] 400-arc template,

[0031] 500-telescopic support, 510-support end plate, 511-elastic cushion, 520-threaded rod, 521-bump,

[0032] 600-compression spring,

[0033] 700- transverse support member, 710- first shaft, 720- first threaded end,

[0034] 800-support rod,

[0035] 900- vertical support member, 910- second rod shaft, 920- second threaded end, 930- frustum support foot,

[0036] 1000-arc connecting plate, 1100-bolt. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 without making creative efforts shall fall within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0039] In the description of the present invention, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does 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 the present invention.

[0040] In addition, the terms "first", "second", "third", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0041] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0042] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0044] It should be understood that there are small differences in the sizes of the arc-shaped inner walls at the top of the small-section tunnel, and the supporting components supporting the arc template 400 are all prefabricated components with relatively fixed sizes. As a result, when the supporting components support the arc template 400, the supporting components and the arc template 400 cannot be adapted to each other, which in turn causes the supporting components to be unable to effectively support the arc template 400 or unable to support the arc template 400.

[0045] To improve the above problems, this embodiment provides a small-section tunnel lining support structure, which mainly includes two sidewall support plates 100, an arc support plate 300 and multiple telescopic support members 500. This device is mainly used to effectively support the arc template 400 at the top of the small tunnel.

[0046] like Figure 1 As shown, the two side wall support plates 100 are respectively arranged on the surfaces of the side walls on both sides of the tunnel, and one side surface of the side wall support plate 100 is in contact with the side wall, and a transverse support member 700 is provided between the two side wall support plates 100. The transverse support member 700 is perpendicular to the surfaces of the two side wall support plates 100 and abuts against the side wall support plates 100, thereby tightening the side wall support plates 100, so that the side wall support plates 100 have a better supporting effect on the side wall formwork 200.

[0047] In this embodiment, Figure 1 As shown, the two ends of the transverse support member 700 are detachably connected to the two side wall support plates 100. Specifically, the transverse support member 700 has a first rod body 710, and the two ends of the first rod body 710 are provided with first threaded ends 720. The first threaded ends 720 are threadedly connected to the first rod body 710, so that the first threaded ends 720 can be moved back and forth axially along the first rod body 710 relative to the first rod body 710.

[0048] The side wall support plate 100 has threaded holes on its surface, and the two first threaded ends 720 are respectively threadedly connected to the threaded holes on the surfaces of the two side wall support plates 100, thereby making the side wall support plate 100 suitable for tunnels with different side wall spacings.

[0049] like Figure 1 and Figure 3As shown, the arc support plate 300 is arranged on the lower side of the arc template 400 at the top of the tunnel, and its two ends are detachably connected to the top of the two side wall support plates 100. Specifically, the outer side of the arc support plate 300 plate wall faces the arc template 400, and its two ends are respectively facing the top of the two side wall support plates 100, wherein the circumferential outer walls at both ends of the arc support plate 300 are provided with arc connecting plates 1000, and the circumferential outer wall at one end of the top of the side wall support plate 100 is also provided with an arc connecting plate 1000, and the arc support plate 300 and the side wall support plate 100 are threadedly connected through two arc connecting plates 1000, wherein, when the two ends of the arc support plate 300 are respectively connected to the top of the two side wall support plates 100, the surfaces of the two arc connecting plates 1000 are fitted together and connected by bolts 1100.

[0050] The end surfaces at both ends of the arc support plate 300 are consistent in size with the end surface of the top of the side wall support plate 100 .

[0051] In this embodiment, Figure 1-Figure 2 As shown, the arc support plate 300 is provided with a plurality of telescopic support members 500 on the outer wall facing the arc template 400, and the plurality of telescopic support members 500 are sequentially spaced along the circumference of the outer wall of the arc support plate 300, wherein one end of the telescopic support member 500 faces the arc template 400, and the other end passes through the plate wall of the arc support plate 300, and the other end of the telescopic support member 500 is arranged on the inner side of the arc support plate 300 and away from the arc template 400. Specifically, the telescopic support member 500 is arranged along the outer surface of the plate wall of the arc support plate 300. It is arranged vertically, and the telescopic member can be moved back and forth relative to the arc support plate 300 along the axial direction of the telescopic member toward the arc template 400, so that one end of the telescopic member can be displaced to the surface of the arc template 400 and abut against the surface of the outer wall of the arc template 400, thereby supporting the arc template 400, and since the telescopic support members 500 are arranged in sequence at intervals, when supporting the arc template 400, the support points of the telescopic support members 500 on the arc template 400 are relatively uniform, thereby supporting the arc template 400 from different directions.

[0052] There are multiple telescopic support members 500 , which can be set according to the outer wall size of the arc template 400 and the casting amount. In this embodiment, for the convenience of description, the number of the telescopic support members 500 is three.

[0053] In this embodiment, when the arc support plate 300 is adapted to the arc template 400, one end of the telescopic support member 500 is arranged inside the plate wall of the arc support plate 300, and the other end is arranged on the inner side of the plate wall of the arc support plate 300, and the arc support plate 300 and the telescopic support member 500 are both fitted with the surface of the arc support plate 300, so that the arc support plate 300 and the telescopic support member 500 effectively support the arc template 400.

[0054] When the arc support plate 300 is not compatible with the arc template 400, one end of the telescopic support member 500 is displaced relative to the arc support plate 300 toward the arc template 400 and fits with the surface of the arc template 400. The outer wall surface of the arc support plate 300 faces the surface of the arc template 400, and the surface of the arc template 400 does not fit with the outer wall surface of the arc template 400, or part of the surface of the arc template 400 fits with the outer wall surface of the arc template 400. At this time, since multiple telescopic support members 500 are arranged in sequence along the circumference of the outer wall of the arc support plate 300, the multiple telescopic support members 500 evenly support the arc template 400 from different points, so that the support effect on the arc template 400 is more uniform and stable, so that the telescopic support member 500 effectively supports the arc template 400.

[0055] In this embodiment, the tunnel side wall is supported by the side wall support plate 100, and the top of the side wall support plate 100 is supported on the arc support plate 300, thereby supporting the side wall template 200 and the arc template 400. At the same time, the arc support plate 300 is provided with a plurality of telescopic support members 500 spaced in sequence along the circumference of the outer wall, so that the telescopic support members can be displaced relative to the arc support plate 300, thereby enabling the telescopic support members 500 to support the area where the arc support plate 300 is not suitable, thereby enabling the arc support plate 300 and the plurality of telescopic support members 500 to jointly effectively support the arc template 400, thereby making the support device suitable for arc templates 400 of different sizes.

[0056] In some embodiments, as Figure 1-Figure 2 As shown, the surface of the arc support plate 300 is provided with multiple grooves 310, the telescopic support member 500 includes a support end plate 510 and a threaded rod 520, the threaded rod 520 passes through the arc support plate 300 in a direction perpendicular to the plate wall of the arc support plate 300, and is threadedly connected to the arc support plate 300, the support end plate 510 faces the arc template 400, and is arranged in the plate wall of the arc support plate 300. Specifically, multiple support end plates 510 are respectively arranged in multiple grooves 310, and the other ends of multiple threaded rods 520 respectively pass through the bottom inner walls of multiple grooves 310 and are arranged on the inner side of the arc support plate 300. The threaded rod 520 is threadedly connected to the plate wall of the arc support plate 300 on one side of the inner wall of the bottom wall of the groove 310, and the support end plate 510 facing the bottom inner wall of the groove 310 is provided with a circular groove, the size of the circular groove is larger than the size of one end of the threaded rod 520, so that the threaded rod 520 can rotate relative to the circular groove, thereby preventing the threaded rod 520 from driving the support end plate 510 to rotate.

[0057] In this embodiment, when the threaded rod 520 rotates in one direction relative to the arc support plate 300 and one end of the threaded rod 520 moves toward the support end plate 510, one end of the threaded rod 520 is inserted into the circular groove, thereby pushing the support end plate 510 to move toward the arc template 400, thereby making the support end face fit the arc template 400, and the threaded rod 520 presses the support end plate 510 tightly, thereby making the support end plate 510 stably support the arc end plate.

[0058] In some embodiments, as Figure 1-Figure 2 As shown, a compression spring 600 is provided between the support end plate 510 and the bottom inner wall of the groove 310, and the threaded rod 520 passes through the compression spring 600. In this embodiment, when the threaded rod 520 is inserted into the circular groove and pressed against the support end plate 510, the compression spring 600 is in a stretched state, thereby providing a pre-tightening force for the threaded rod 520, thereby making the connection between the threaded rod 520 and the arc support plate 300 stable. When one end of the threaded rod 520 is away from the arc template 400, the compression spring 600 contracts, and the support end plate 510 is displaced toward the groove 310 under the action of the compression spring 600, thereby away from the arc template 400, making the disassembly of the support device easier.

[0059] In some embodiments, as Figure 2 As shown, an elastic pad layer 511 is provided on the surface of the supporting end plate 510. Specifically, the elastic pad layer 511 can be a rubber pad layer, so that the elastic pad layer 511 has a certain elasticity and toughness, and then under the extrusion of the supporting end plate 510, the elastic pad layer 511 is adapted to the side wall shape of the arc template 400, thereby stably supporting the arc template 400.

[0060] In some embodiments, the lateral support member 700 is arranged near the top of the side wall support plate 100, and a plurality of support rods 800 are provided between the upper surface and the inner surface of the arc support plate 300, so that the plurality of support rods 800 can stably support the arc support plate 300, thereby stabilizing the position of the arc support plate 300.

[0061] In this embodiment, both ends of the support rod 800 are fixedly connected to the transverse support member 700 and the arc support plate 300 .

[0062] In some embodiments, as Figure 1 and Figure 4As shown, a plurality of vertical support members 900 are provided at the bottom of the horizontal support member 700. The plurality of vertical support members 900 are arranged in sequence at intervals and supported on the lower surface of the horizontal support member 700, thereby stably supporting the horizontal support member 700. Specifically, the vertical support member 900 includes a rod body and a second threaded end 920. The second threaded end 920 is coaxially arranged with the rod body, and the second threaded end 920 is threadedly connected to the rod body, wherein the second threaded end 920 is supported on the lower surface of the rod body of the horizontal support member 700.

[0063] In this embodiment, Figure 1 and Figure 4 The outer wall around the bottom of the second shaft 910 is provided with a conical support foot 930, and the top of the second threaded end 920 is also provided with a conical support foot 930, so that the contact area between the bottom of the second shaft 910 and the ground is larger, and the contact area between the second threaded end 920 and the horizontal support member 700 is larger, so that the position of the vertical support member 900 is stable and can support the horizontal support member 700 more stably.

[0064] In some embodiments, as Figure 1-Figure 2 As shown, two protrusions 521 are provided on the circumferential outer wall of the other end of the threaded rod 520 . The two protrusions 521 are arranged opposite to each other, so that the threaded rod 520 can be rotated more easily.

Claims

1. A small-section tunnel lining support structure, characterized in that: include: Two side wall support plates (100) are arranged opposite to the side wall formwork (200) on both sides of the tunnel; The arc support plate (300) is arranged on the lower side of the arc template (400) at the top of the tunnel, and its two ends are detachably connected to the tops of the two side wall support plates (100); and A plurality of telescopic support members (500) are sequentially spaced along the outer wall of the circular arc support plate (300), one end of which faces the circular arc template (400) and the other end passes through the plate wall of the circular arc support plate (300); the other end of the telescopic support member (500) is arranged on the inner side of the circular arc support plate (300) and away from the circular arc template (400); When the arc support plate (300) is not compatible with the arc template (400), one end of the telescopic support member (500) is displaced relative to the arc support plate (300) toward the arc template (400) and fits the surface of the arc template (400).

2. The small-section tunnel lining support structure according to claim 1, characterized in that: The telescopic support member (500) includes a support end plate (510) and a threaded rod (520). The threaded rod (520) passes through the circular arc support plate (300) in a direction perpendicular to the plate wall of the circular arc support plate (300) and is threadedly connected to the circular arc support plate (300). The support end plate (510) faces the circular arc template (400) and is arranged in the plate wall of the circular arc support plate (300).

3. The small-section tunnel lining support structure according to claim 2, characterized in that: The surface of the arc support plate (300) is provided with a plurality of grooves (310), the plurality of support end plates (510) are respectively arranged in the plurality of grooves (310), and the other ends of the plurality of threaded rods (520) respectively pass through the bottom inner walls of the plurality of grooves (310) and are arranged on the inner side of the arc support plate (300).

4. The small-section tunnel lining support structure according to claim 3, characterized in that: A compression spring (600) is provided between the supporting end plate (510) and the inner wall of the bottom of the groove (310), and the threaded rod (520) passes through the compression spring (600).

5. The small-section tunnel lining support structure according to claim 2, characterized in that: An elastic cushion layer (511) is provided on the surface of the supporting end plate (510).

6. The small-section tunnel lining support structure according to claim 1, characterized in that: A transverse support member (700) is provided between the two side wall support plates (100), and both ends of the transverse support member (700) are detachably connected to the two side wall support plates (100).

7. The small-section tunnel lining support structure according to claim 6, characterized in that: Both ends of the transverse support member (700) are threadedly connected to the two side wall support plates (100).

8. The small-section tunnel lining support structure according to claim 7, characterized in that: The transverse support member (700) is arranged close to the top of the side wall support plate (100), and a plurality of support rods (800) are provided between the upper surface and the inner surface of the arc support plate (300).

9. The small-section tunnel lining support structure according to claim 8, characterized in that: A plurality of vertical support members (900) are provided at the bottom of the transverse support member (700), and the plurality of vertical support members (900) are arranged in sequence and spaced apart, and supported on the lower surface of the transverse support member (700).

10. The small-section tunnel lining support structure according to claim 3, characterized in that: Two protrusions (521) are provided on the circumferential outer wall of the other end of the threaded rod (520), and the two protrusions (521) are arranged opposite to each other.

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