Portable temporary supporting structure

Abstract

The utility model discloses a portable temporary supporting structure, and belongs to the technical field of supporting structures. The utility model solves the problems in the prior art that the construction requirement is higher, the difficulty is higher and the operation is more complicated when a feet-lock bolt is used for anchoring a corrugated steel structure and a surrounding rock at an arch foot, and comprises a corrugated steel primary support structure and a support mechanism, and the support mechanism comprises a support platform, a vertical telescopic mechanism is arranged on the supporting platform, the vertical telescopic mechanism is connected with a transverse telescopic mechanism, the two ends of the transverse telescopic mechanism are both connected with embedded corrugated plates, and the shape and the size of the embedded corrugated plates are matched with the shape and the size of a corrugated steel plate structure located at an arch foot in the corrugated steel primary supporting structure. Different from a traditional feet-lock bolt structure, the foot-lock bolt is high in integrity, convenient to transport, high in supporting strength and capable of greatly increasing the tunnel construction speed, and secondary dismantling is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of supporting structures, and in particular relates to a portable temporary supporting structure. Background Art

[0002] During the construction of mountain highway tunnels, corrugated steel has been widely used for initial tunnel support as a support structure with the advantages of strong resistance to surrounding rock deformation, high overall stiffness, light weight, and convenient installation. When the tunnel is excavated using the step method, temporary support is required for the corrugated steel at the arch foot after the upper step is excavated to ensure the stability of the support structure during the lower step excavation and subsequent construction. At present, locking anchor rods are often used to anchor the corrugated steel structure at the arch foot to the surrounding rock to achieve the purpose of temporary support. However, the construction requirements of locking anchor rods are high and difficult, and they need to be dismantled after the overall support structure is completed, which is time-consuming and labor-intensive. At the same time, anchor rod holes need to be preset during the processing of corrugated steel plates, which is relatively complicated. Utility Model Content

[0003] In view of the high construction requirements and great difficulty of anchoring the corrugated steel structure and surrounding rock at the arch foot using locking anchor rods in the prior art, and the need to be dismantled after the construction of the overall support structure is completed, which is time-consuming and labor-intensive, and it is also necessary to preset anchor rod holes during the processing of the corrugated steel plate, which is a relatively complicated problem. The utility model provides a portable temporary support structure, which can make the construction process of corrugated steel more flexible.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A portable temporary support structure comprises a corrugated steel initial support structure and a support mechanism, wherein the support mechanism comprises a support platform, a vertical telescopic mechanism is arranged on the support platform, the vertical telescopic mechanism is connected to a transverse telescopic mechanism, both ends of the transverse telescopic mechanism are connected to embedded corrugated plates, and the shape and size of the embedded corrugated plates match the shape and size of the corrugated steel plate structure located at the arch foot in the corrugated steel initial support structure.

[0006] After adopting this technical solution, the support platform is used to provide a placement space for the vertical telescopic mechanism. The vertical telescopic mechanism and the horizontal telescopic mechanism can maintain the embedded corrugated plate and the corrugated steel plate structure at the arch foot in a tightly engaged state, and then fixed to achieve the purpose of temporary support. When the lower step of the tunnel is excavated, the upper initial support structure can remain safe and stable, reducing the difficulty of operation.

[0007] Preferably, a rigid roller is provided at the bottom of the supporting platform.

[0008] After adopting this technical solution, the rigid roller is a rigid body with sufficient compressive strength, which allows the overall temporary support structure to move flexibly.

[0009] Preferably, the vertical telescopic mechanism includes a vertical telescopic sleeve and a vertical jack connected to the supporting platform, and the transverse telescopic mechanism includes a transverse telescopic sleeve connected to the vertical telescopic sleeve, each end of the transverse telescopic sleeve is connected to a transverse jack, and the transverse jack is connected to the embedded corrugated plate.

[0010] After adopting this technical solution, the lateral and longitudinal movement of the embedded corrugated plate can be achieved through the jack, which is simple and easy to operate.

[0011] Preferably, the transverse jack and the longitudinal jack are both hydraulic jacks.

[0012] After adopting this technical solution, the jack is a hydraulic jack with light weight, compact structure and small inertia.

[0013] Preferably, a rigid hinge is provided between the lateral telescopic mechanism and the vertical telescopic mechanism.

[0014] After adopting this technical solution, the rigid hinge is used to support the transverse telescopic mechanism and the vertical telescopic mechanism, ensuring that the vertical telescopic mechanism can maintain the stability of the transverse telescopic mechanism.

[0015] Preferably, the corrugated steel initial support structure includes a corrugated steel plate structure, which includes an upper step corrugated steel plate and a lower step corrugated steel plate, the upper step corrugated steel plate includes an A1 type corrugated steel plate and an A2 type corrugated steel plate, the lower step corrugated steel plate includes a B1 type corrugated steel plate, the A1 type corrugated steel plate and the A2 type corrugated steel plate are circumferentially overlapped by bolts to form an arch structure, a rubber waterstop is arranged between the A1 type corrugated steel plate and the A2 type corrugated steel plate, the A2 type corrugated steel plate is connected to the B1 type corrugated steel plate through an annular flange, and bolt holes are arranged on the annular flange.

[0016] Preferably, the corrugated steel plate near the arch foot is connected to the corrugated steel plate located at the arch foot via an annular flange, and bolt holes are provided on the annular flange.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. The support platform of the utility model is used to provide a placement space for the vertical telescopic mechanism. The vertical telescopic mechanism and the horizontal telescopic mechanism can maintain the embedded corrugated plate and the corrugated steel plate structure at the arch foot in a tightly engaged state, and then fix them to achieve the purpose of temporary support, so that the upper initial support structure can remain safe and stable when the lower step of the tunnel is excavated, reducing the difficulty of operation.

[0019] 2. The structure of the utility model is different from the traditional locking foot anchor structure. It has strong integrity and does not require secondary dismantling. It is also easy to transport and has high support strength, which can greatly speed up tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the corrugated steel plate structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the connection structure between the corrugated steel plate structure and the annular flange of the utility model;

[0024] Among them: 1-corrugated steel initial support structure, 101-corrugated steel plate structure, 1011-A1 corrugated steel plate, 1012-rubber waterstop, 1013-A2 corrugated steel plate, 1014-bolt, 1015-B1 corrugated steel plate, 102-annular flange, 103-bolt hole, 2-embedded corrugated plate, 3-lateral telescopic mechanism, 4-rigid hinge, 5-support platform, 6-vertical telescopic mechanism, 7-rigid roller. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present 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 the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] Combine the following Figure 1-Figure 3 The utility model is described in detail.

[0028] like Figure 1 As shown, a portable temporary support structure includes a corrugated steel initial support structure 1 and a support mechanism, wherein the support mechanism includes a support platform 5, on which a vertical telescopic mechanism 6 is arranged, and the vertical telescopic mechanism 6 is connected to a transverse telescopic mechanism 3, and both ends of the transverse telescopic mechanism 3 are connected to an embedded corrugated plate 2, and the shape and size of the embedded corrugated plate 2 match the shape and size of the corrugated steel plate structure 101 at the arch foot in the corrugated steel initial support structure 1. The support platform 5 is used to provide a placement space for the vertical telescopic mechanism 6, and the vertical telescopic mechanism 6 and the transverse telescopic mechanism 3 can maintain a tight engagement state between the embedded corrugated plate 2 and the corrugated steel plate structure 101 at the arch foot, and then fix them to achieve the purpose of temporary support, so that the upper corrugated steel initial support structure 1 can remain safe and stable when the lower step of the tunnel is excavated, reducing the difficulty of operation.

[0029] In this embodiment, a rigid roller 7 is provided at the bottom of the support platform 5. The rigid roller 7 is a rigid body with sufficient compressive strength, so that the overall temporary support structure can be flexibly moved.

[0030] In this embodiment, the vertical telescopic mechanism 6 includes a vertical telescopic sleeve and a vertical jack connected to the supporting platform 5, and the transverse telescopic mechanism 3 includes a transverse telescopic sleeve connected to the vertical telescopic sleeve, and each end of the transverse telescopic sleeve is connected to a transverse jack, and the transverse jack is connected to the embedded corrugated plate 2.

[0031] In this embodiment, the horizontal jack and the vertical jack are hydraulic jacks, which are light in weight, compact in structure and small inertia.

[0032] In this embodiment, a rigid hinge 4 is provided between the transverse telescopic mechanism 3 and the vertical telescopic mechanism 6. The rigid hinge is used to support the transverse telescopic mechanism and the vertical telescopic mechanism to ensure that the vertical telescopic mechanism can maintain the stability of the transverse telescopic mechanism.

[0033] In this embodiment, Figure 2-3 As shown, the corrugated steel initial support structure 1 includes a corrugated steel plate structure 101, and the corrugated steel plate structure 101 includes an upper step corrugated steel plate and a lower step corrugated steel plate, the upper step corrugated steel plate includes an A1 type corrugated steel plate 1011 and an A2 type corrugated steel plate 1013, and the lower step corrugated steel plate includes a B1 type corrugated steel plate 1015, the A1 type corrugated steel plate 1011 and the A2 type corrugated steel plate 1013 are circumferentially overlapped by bolts 1014 to form an arch structure, a rubber waterstop 1012 is arranged between the A1 type corrugated steel plate 1011 and the A2 type corrugated steel plate 1013, and the A2 type corrugated steel plate 1013 is connected to the B1 type corrugated steel plate 1015 through an annular flange 102, and the annular flange 102 is provided with bolt holes 103. The bolt holes 103 are opened vertically, with crests facing crests and troughs facing troughs during splicing. Bolts 1014 can be put on the first splicing plate in advance before overlapping, and temporarily fixed with tools such as long-tail clamps. The annular flange 102 is welded on one side of the A2 corrugated steel plate 1013, the A1 corrugated steel plate 1011, and the B1 corrugated steel plate 1015 respectively. Double-sided welding is used. During welding, ensure that the annular flange 102 is in a vertical relationship with the corrugated steel plate structure 101, and arc-starting plates are set on both sides. Bolt hole 103 is an M20 bolt hole: used to tighten bolts 1014 and connect the corrugated steel plate structures 101 on both sides.

[0034] In this embodiment, the size of the A1 type corrugated steel plate 1011 is 403.2 cm×124.0 cm, the size of the A2 type corrugated steel plate 1013 is 201.6 cm×124.0 cm, and the size of the B1 type corrugated steel plate 1015 is 270.0 cm×124.0 cm.

[0035] Construction requirements: When assembling the corrugated steel plate structure 101 in pieces, determine a reasonable assembly sequence based on construction capacity and construction safety requirements. Use a crowbar for correction when necessary to ensure that the bolt holes on the corrugated steel plate structure 101 are accurately aligned.

[0036] After the corrugated steel plate structure 101 at the arch foot of the upper step is assembled, the height of the vertical telescopic mechanism 6 should be adjusted first, so that the embedded corrugated plate 2 and the corrugated steel plate structure 101 at the arch foot are almost on the same horizontal line, and then the length of the horizontal jack and the telescopic sleeve are adjusted to make the embedded corrugated plate 2 fit the corrugated steel plate 101 at the arch foot, and then fine-tune the vertical height, and finally use the hydraulic jack to force the embedded corrugated plate 2 so that the embedded corrugated plate 2 and the corrugated steel plate structure 101 at the arch foot are tightly engaged to achieve the purpose of temporary support. Before the formal assembly of the corrugated steel plate structure 101, a trial assembly and trial installation should be carried out to ensure the smooth progress of the formal installation, and to find problems in time and propose solutions on site.

[0037] Reference Figure 1-Figure 3 The specific method of using the utility model is as follows:

[0038] (1) Use a transport vehicle to transport the corrugated steel plate structure 101 required for assembling the steps to the front of the tunnel, and prepare tools such as bolts 1014, bolt washers, wrenches, and crowbars;

[0039] (2) Use a loader to hoist the corrugated steel plate structure 101 at the arch feet on both sides to the vicinity of the assembly position, and then carry and assemble it manually. After it is in place, push the support mechanism to the predetermined position using the rigid roller 7, start the hydraulic jack, and adjust the position of the telescopic sleeve so that the corrugated steel plate structure 101 at the arch foot is closely fitted with the embedded corrugated plate 2 to provide sufficient lateral support force;

[0040] (3) Assembling the corrugated steel plate structure 101 of the vault on the ground: first, use a loader to erect the vault plates on the ground, connect the corrugated steel plate structure 101 of the vault with annular bolts, so that the corrugated steel plate structure 101 of the vault becomes a whole, and after the connection is completed, erect it on the ground with a loader;

[0041] (4) Install two steel arches with a curvature similar to that of the corrugated steel plate structure 101 on the bucket of the loader to increase the contact area between the loader bucket and the corrugated steel plate structure 101 at the top of the arch, so that when the plate is lifted in the next step, the plate is more stable on the loader bucket;

[0042] (5) Use a loader to lift up the corrugated steel plate structure 101 of the arch erected on the ground, and constantly adjust the position of the loader and its bucket to align the corrugated steel plate structure 101 of the arch top with the corrugated steel plate structure 101 of the arch feet on both sides. After positioning and alignment, use the annular bolts at the annular flange 102 to connect the corrugated steel plate structure 101 at the arch waist and the arch foot. The upper step corrugated steel plate is then spliced.

[0043] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A portable temporary support structure, characterized in that: The invention comprises a corrugated steel initial support structure (1) and a support mechanism, wherein the support mechanism comprises a support platform (5), wherein a vertical telescopic mechanism (6) is arranged on the support platform (5), wherein the vertical telescopic mechanism (6) is connected to a transverse telescopic mechanism (3), wherein both ends of the transverse telescopic mechanism (3) are connected to an embedded corrugated plate (2), wherein the shape and size of the embedded corrugated plate (2) match the shape and size of a corrugated steel plate structure (101) located at an arch foot in the corrugated steel initial support structure (1).

2. A portable temporary support structure according to claim 1, characterized in that: A rigid roller (7) is provided at the bottom of the support platform (5).

3. A portable temporary support structure according to claim 1, characterized in that: The vertical telescopic mechanism (6) comprises a vertical telescopic sleeve and a vertical jack connected to the support platform (5), and the transverse telescopic mechanism (3) comprises a transverse telescopic sleeve connected to the vertical telescopic sleeve, each end of the transverse telescopic sleeve is connected to a transverse jack, and the transverse jack is connected to the embedded corrugated plate (2).

4. A portable temporary support structure according to claim 3, characterized in that: The vertical jack and the horizontal jack are both hydraulic jacks.

5. A portable temporary support structure according to any one of claims 1 to 4, characterized in that: A rigid hinge (4) is provided between the transverse telescopic mechanism (3) and the vertical telescopic mechanism (6).

6. A portable temporary support structure according to any one of claims 1 to 4, characterized in that: The corrugated steel primary support structure (1) comprises a corrugated steel plate structure (101), wherein the corrugated steel plate structure (101) comprises an upper step corrugated steel plate and a lower step corrugated steel plate, wherein the upper step corrugated steel plate comprises an A1 type corrugated steel plate (1011) and an A2 type corrugated steel plate (1013), wherein the lower step corrugated steel plate comprises a B1 type corrugated steel plate (1015), wherein the A1 type corrugated steel plate (1011) and the A2 type corrugated steel plate (1013) are The corrugated steel plates (1013) are overlapped in an annular manner by bolts (1014) to form an arch structure. A rubber water stop strip (1012) is arranged between the A1 type corrugated steel plate (1011) and the A2 type corrugated steel plate (1013). The A2 type corrugated steel plate (1013) and the B1 type corrugated steel plate (1015) are connected by an annular flange (102). Bolt holes (103) are arranged on the annular flange (102).

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