Secondary lining end template for highway tunnel

Abstract

The utility model discloses a highway tunnel secondary lining end template, which comprises an inner baffle plate and an outer baffle plate, a water stop belt is arranged between the inner baffle plate and the outer baffle plate, one side of the inner baffle plate is connected with a trolley inner template, one side of the outer baffle plate is connected with a tunnel primary lining, the other side of the inner baffle plate and the other side of the outer baffle plate are provided with connecting blocks, and the connecting blocks are connected with the trolley inner template. The two sides of the connecting block are rotationally connected with transverse plates. The utility model relates to the technical field of highway tunnel construction, and adopts the technical scheme that a plurality of combined templates formed by combining inner baffles and outer baffles are annularly arranged on the profile of the section of a tunnel, and the inner baffles and the outer baffles are matched, so that a water stop belt can be efficiently mounted and operated; meanwhile, a connecting block and a transverse plate are arranged on one side of the inner baffle and one side of the outer baffle, the fixing effect of the waterstop can be further improved, and the waterproof effect of the waterstop is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of highway tunnel construction, and particularly relates to a second lining end template for highway tunnels. Background Art

[0002] A highway tunnel refers to a tunnel specifically designed and constructed for highway traffic. The construction of the embedded waterstop in the second lining of a highway tunnel is an important part of the overall waterproof and drainage system of the tunnel. In the actual construction process, the traditional method for constructing the embedded waterstop is to fix the waterstop with wooden templates and steel clips. There are problems such as the waterstop not being firmly fixed, easy occurrence of grout leakage, and it is difficult to ensure that the position of the waterstop is orthogonal to the lining end template, and it is prone to deviation. Content of the Utility Model

[0003] The utility model aims to provide a second lining end template for highway tunnels, which can increase the fixing effect of the waterstop and prevent the problem of grout leakage.

[0004] The utility model is realized through the following technical solutions: A second lining end template for highway tunnels includes an inner baffle and an outer baffle. A waterstop is arranged between the inner baffle and the outer baffle. One side of the inner baffle is connected to the inner template of the trolley, and there is a primary lining of the tunnel on one side of the outer baffle. Connecting blocks are arranged on the other sides of the inner baffle and the outer baffle. Cross plates are rotatably connected to both sides of the connecting blocks. An insertion block is arranged on one side of the connecting block. The insertion block is inserted into the other sides of the inner baffle and the outer baffle. A cavity is arranged inside the insertion block, a conical column is arranged inside the cavity, plugging components are arranged on both sides of the cavity, and jacks corresponding to the plugging components are arranged on the other sides of the inner baffle and the outer baffle. A push bolt is inserted into one side of the insertion block, and one end of the push bolt extends into the cavity and is threadedly connected to one end of the conical column.

[0005] Preferably, the plugging component includes a plugging rod. A through hole is arranged on one side of the cavity. The plugging rod passes through the through hole and is inserted into the jack. A first limiting piece is arranged on one side of the plugging rod, and a spring is sleeved on one side of the plugging rod.

[0006] Preferably, sliding grooves are arranged on the inner walls of both sides of the cavity, and the conical column is slidably connected to the sliding grooves.

[0007] Preferably, a fastening bolt passes through one side of the cross plate and is threadedly connected to the inner baffle.

[0008] Preferably, grooves matching the waterstop are arranged on the other sides of the inner baffle and the outer baffle.

[0009] Preferably, the gaps between the cross plates and the connecting blocks and the other sides of the inner baffle and the outer baffle are filled with a geotextile layer.

[0010] Advantages of the utility model: In the technical solution, a plurality of combined templates composed of inner baffles and outer baffles are arranged in a circular pattern along the tunnel cross-section contour. By using the cooperation of the inner baffle and the outer baffle, the installation operation of the water stop belt can be carried out efficiently. At the same time, connecting blocks and cross plates are arranged on one side of the inner baffle and the outer baffle, which can further enhance the fixing effect of the water stop belt and improve the waterproof effect of the water stop belt. Description of the Drawings

[0011] Figure 1 It is the main cross-sectional view of the utility model.

[0012] Figure 2 It is the side view of the utility model.

[0013] Figure 3 is Figure 1 the partial enlarged view of

[0014] In the figure: 1, inner baffle; 2, outer baffle; 3, water stop belt; 4, inner formwork of the trolley; 5, primary lining of the tunnel; 6, connecting block; 7, cross plate; 8, insertion block; 9, tapered column; 10, push bolt; 11, insertion rod; 12, first limit piece; 13, spring; 14, fastening bolt; 15, geotextile layer. Detailed Implementation Modes

[0015] Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] As Figures 1 - 3 shown, a formwork for the end of the secondary lining of a highway tunnel includes an inner baffle 1 and an outer baffle 2, and a water stop belt 3 is arranged between the inner baffle 1 and the outer baffle 2.

[0017] One side of the inner baffle 1 is connected to the inner formwork 4 of the trolley, and there is a primary lining 5 of the tunnel on one side of the outer baffle 2. Connecting blocks 6 are arranged on the other sides of the inner baffle 1 and the outer baffle 2. Cross plates 7 are rotatably connected to both sides of the connecting block 6. An insertion block 8 is arranged on one side of the connecting block 6. The insertion block 8 is inserted into the other sides of the inner baffle 1 and the outer baffle 2. A cavity is arranged inside the insertion block 8, a tapered column 9 is arranged inside the cavity, and insertion assemblies are arranged on both sides of the cavity. Corresponding insertion holes are arranged on the other sides of the inner baffle 1 and the outer baffle 2. A push bolt 10 is inserted into one side of the insertion block 8, and one end of the push bolt 10 extends into the cavity and is threadedly connected to one end of the tapered column 9.

[0018] The insertion assembly includes an insertion rod 11. A through hole is arranged on one side of the cavity. The insertion rod 11 passes through the through hole and is inserted into the insertion hole. A first limit piece 12 is arranged on one side of the insertion rod 11, and a spring 13 is sleeved on one side of the insertion rod 11.

[0019] It should be noted that during the construction of the road tunnel, first, the inner baffle 1 is installed on the trolley to form an inner retaining ring. Subsequently, the waterstop 3 is fixed on the outer side of the inner retaining ring, and the outer baffle 2 is inserted between the initial lining 5 of the tunnel and the waterstop 3 to form an outer retaining ring. At this time, the insertion block 8 on one side of the connecting block 6 can be inserted between the inner baffle 1 and the outer baffle 2, and the cross plate 7 is rotated to make the cross plate 7 level with the inner baffle 1 and the outer baffle 2, and the cross plate 7 is tightly connected to the inner baffle 1 and the outer baffle 2 by using the fastening bolt 14, thus completing the preliminary fixation among the inner baffle 1, the outer baffle, and the waterstop 3.

[0020] Subsequently, the operator rotates the push bolt 10, thereby pushing the tapered column to move horizontally inside the cavity. At this time, the tapered column will push the insertion rod 11 to move along the insertion hole, and cooperate with the first limiting piece 12 and the second limiting piece to compress the spring. At the same time, the insertion rod 11 will extend out of the cavity and be inserted into the insertion holes on the other sides of the inner baffle 1 and the outer baffle 2, thereby further increasing the fixing effect of the waterstop 3; the gap between the cross plate 7 and the connecting block 6 and the inner baffle 1 and the outer baffle 2 on the other sides is filled with a geotextile layer 15, which can ensure the sealing of the end formwork.

[0021] On the other sides of the inner baffle 1 and the outer baffle 2, grooves matching the waterstop 3 are provided to increase the degree of fitting between the waterstop 3 and the inner baffle 1 and the outer baffle 2, thereby increasing the fixing effect of the waterstop 3.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A formwork for the end of the secondary lining of a highway tunnel, comprising an inner baffle and an outer baffle, characterized in that: A waterstop is arranged between the inner baffle and the outer baffle. One side of the inner baffle is connected to the inner formwork of the trolley, and there is a primary lining of the tunnel on one side of the outer baffle. Connecting blocks are arranged on the other sides of the inner baffle and the outer baffle. Cross plates are rotatably connected to both sides of the connecting blocks. An insertion block is arranged on one side of the connecting block, and the insertion block is inserted into the other sides of the inner baffle and the outer baffle. A cavity is arranged inside the insertion block, a tapered column is arranged inside the cavity, plugging assemblies are arranged on both sides of the cavity, and insertion holes corresponding to the plugging assemblies are arranged on the other sides of the inner baffle and the outer baffle. A pushing bolt is inserted into one side of the insertion block, and one end of the pushing bolt extends into the cavity and is threadedly connected to one end of the tapered column.

2. The end formwork for the secondary lining of a highway tunnel according to claim 1, wherein, The plugging assembly includes a plugging rod. A through hole is arranged on one side of the cavity, the plugging rod passes through the through hole and is inserted into the insertion hole, a first limiting piece is arranged on one side of the plugging rod, and a spring is sleeved on one side of the plugging rod.

3. The end formwork of the secondary lining of the highway tunnel according to claim 1, wherein Chute grooves are arranged on the inner walls of both sides of the cavity, and the tapered column is slidably connected to the chute grooves.

4. The end formwork of the secondary lining of the highway tunnel according to claim 1, characterized in that, A fastening bolt penetrates through one side of the cross plate, and the fastening bolt is threadedly connected to the inner baffle.

5. The end formwork of the secondary lining of the highway tunnel according to claim 1, wherein Grooves matching the waterstop are arranged on the other sides of the inner baffle and the outer baffle.

6. The end formwork of the secondary lining of the highway tunnel according to claim 1, wherein, The gaps between the cross plates and the connecting blocks and the other sides of the inner baffle and the outer baffle are filled with a geotextile layer.

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