Tunnel lining section embedded type water stop fixing structure

Abstract

The utility model discloses a fixing structure for a middle-buried type water stop belt of a tunnel lining section. The device comprises a butt joint position water-stop belt arranged at the joint of poured secondary lining concrete and to-be-poured secondary lining concrete, an end head water-stop belt connected to the end head of the to-be-poured secondary lining concrete, and a poured area connecting rib for clamping and fixing one side of the butt joint position water-stop belt, the to-be-poured area connecting rib on the other side of the water stop at the butt joint is clamped and fixed, and the butt joint steel bar clamp is connected between the poured area connecting rib and the to-be-poured area connecting rib and used for fixing the water stop at the butt joint. Due to the arrangement of the water-stop belt at the butt joint and the water-stop belt at the end, the waterproof performance of the deformation joints at the butt joint and the end is guaranteed; through the arrangement of the butt joint steel bar clamp and the end steel bar clamp, the water stop belt can be effectively clamped and fixed, and the end steel bar clamp is further fixed through the end sealing plate and the binding wire; and through arrangement of the poured area connecting ribs and the to-be-poured area connecting ribs, it is guaranteed that the steel bar clamps and the steel bars in the lining are further fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of waterstop construction in tunnels, and particularly relates to a fixed structure of a waterstop embedded in a lining section in a tunnel. Background Art

[0002] The waterstop in the tunnel is a material used for waterproofing and sealing. Through its elasticity and sealing properties, it can effectively prevent groundwater and seepage water from entering the tunnel along the tunnel wall or structural gaps, keeping the tunnel dry. The buried waterstop has a certain degree of elasticity and flexibility, which can alleviate the deformation of the tunnel structure, reduce the stress impact on the structure, and improve the stability and durability of the structure. When installing existing waterstops, they are fixed by pre-embedded bolts, which requires drilling holes in the tunnel structure, increasing the construction difficulty and cost, and excessive drilling will damage the stability and strength of the tunnel structure; if fixed by welding, welding equipment and workers with skilled operating skills are required, which is difficult and prone to thermal damage to the tunnel structure. In addition, due to the different thermal expansion coefficients of the metal waterstop and the tunnel structure, problems such as deformation and cracking at the welding position will occur. Utility Model Content

[0003] The utility model provides a fixing structure of a waterstop embedded in a tunnel lining section, which is used to solve technical problems such as the arrangement and installation of the waterstop embedded in the tunnel lining section and the connection and fixation with steel bars in the lining.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A tunnel lining section embedded waterstop fixing structure includes a butt joint waterstop provided at the connection between the poured secondary lining concrete and the to-be-poured secondary lining concrete, an end waterstop connected to the end of the to-be-poured secondary lining concrete, a poured area connecting reinforcement clamped and fixed to one side of the butt joint waterstop and located within the poured secondary lining concrete, a to-be-poured area connecting reinforcement clamped and fixed to the other side of the butt joint waterstop and located within the to-be-poured secondary lining concrete, and a butt joint steel bar clamp connected between the poured area connecting reinforcement and the to-be-poured area connecting reinforcement to fix the butt joint waterstop;

[0006] The waterstop at the end is an L-shaped piece, one vertical side of the L-shaped piece is parallel and close to the formwork of the end and is connected to the end cover plate on the outside of the formwork by binding wire; the other horizontal side of the L-shaped piece is set perpendicular to the formwork and extends into the second lining concrete to be poured, and the waterstop at the end extending into the second lining concrete to be poured is fixedly connected to the connecting reinforcement of the to-be-cast area by the end steel bar clamp.

[0007] Furthermore, at least two layers of cast area longitudinal reinforcement are arranged at the top and bottom of the cast second lining concrete, cast area stirrups are arranged at intervals on the outside of the cast area longitudinal reinforcement, cast area tension reinforcement is arranged between the two layers of cast area longitudinal reinforcement, and cast area connecting reinforcement is arranged between the two layers of cast area longitudinal reinforcement near the water stop at the joint.

[0008] Furthermore, at least two layers of longitudinal reinforcement of the to-be-cast area are arranged at the top and bottom of the second lining concrete to be cast, stirrups of the to-be-cast area are arranged at intervals on the outside of the longitudinal reinforcement of the to-be-cast area, tension reinforcement of the to-be-cast area is arranged between the two layers of longitudinal reinforcement of the to-be-cast area, and connecting reinforcement of the cast area is arranged between the two layers of longitudinal reinforcement of the to-be-cast area near the waterstop at the joint or the head.

[0009] Furthermore, the connecting bars in the cast area or the area to be cast are C-shaped parts and upper and lower connecting bars are provided at the upper and lower ends of the opening. The upper and lower connecting bars are both J-shaped parts and are respectively connected to the longitudinal bars in the cast area or the area to be cast.

[0010] Furthermore, the C-shaped openings of the connecting bars in the poured area and the connecting bars in the area to be poured are arranged relative to each other, and the C-shaped openings correspond to the butt-joint steel bar clips. 6. A fixed structure for a waterstop embedded in a tunnel lining section as described in claim 5, characterized in that the butt-joint steel bar clips are elongated C-shaped or elliptical pieces, the opening of the C-shaped piece or one end of the elliptical piece is inserted into the opening of the C-shaped piece for the connecting bars in the area to be poured, and the other end of the C-shaped piece or the other end of the elliptical piece is inserted into the opening of the C-shaped piece for the connecting bars in the area to be poured; the butt-joint waterstop is fixedly connected to the butt-joint steel bar clips; the butt-joint waterstop is linearly and symmetrically installed in the poured secondary lining concrete and the to-be-cast secondary lining concrete.

[0011] Furthermore, a formwork is provided within the design range of the second lining concrete to be poured, and the formwork is located at the bottom, side and end of the second lining concrete to be poured; the bottom of the formwork overlaps the lower part of the poured second lining concrete, and the inner side of the formwork at the end is close to the vertical part of the waterstop at the end.

[0012] Furthermore, the end steel bar clamp is a C-shaped part and upper and lower connecting bars are provided at the upper and lower ends of the opening, and the bottom length of the C-shaped part is smaller than the top length, and the difference between the top length and the bottom length is not less than the width of the vertical part of the water stop at the end.

[0013] Furthermore, the upper connecting bars and the lower connecting bars of the end steel bar clamp are respectively connected to the end cover plate by passing through the template through binding wires, and the end cover plate is made of steel bar segments or wooden boards.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1) The utility model is conducive to ensuring waterproofing of the deformation joints at the joints and ends by setting waterstops at the joints and ends; both are fixed by steel bar clips, which are easy to construct and accurately position;

[0016] 2) The utility model provides different styles of steel bar clips at different positions by arranging the butt joint steel bar clips and the end steel bar clips, which can be conducive to the effective clamping and fixing of the water stop, and the end steel bar clips are further fixed by the end sealing plate and binding wire;

[0017] 3) The present invention facilitates further fixation of the steel bar clips to the steel bars in the lining by providing connecting bars in the poured area and connecting bars in the area to be poured. In particular, the provision of C-shaped pieces in the connecting bars in the poured area and connecting bars in the area to be poured facilitates convenient and effective clipping and fixation.

[0018] Other features and advantages of the present invention will be described in the subsequent description, and in part will become apparent from the description, or be understood by implementing the present invention; the main purpose and other advantages of the present invention can be achieved and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the fixed connection structure of the waterstop at the lining joint;

[0020] Figure 2 This is a schematic diagram of the fixed connection structure of the waterstop at the end of the uncast lining;

[0021] Figure 3 It is a schematic diagram of the connecting reinforcement structure of the poured area or the area to be poured;

[0022] Figure 4 This is a schematic diagram of the butt-jointed steel bar clamp;

[0023] Figure 5 This is a schematic diagram of the end steel bar clip.

[0024] Figure markings: 1-cast second lining concrete, 2-cast area longitudinal reinforcement, 3-cast area stirrups, 4-cast area tension reinforcement, 5-cast area connecting reinforcement, 6-cast area second lining concrete, 7-cast area longitudinal reinforcement, 8-cast area stirrups, 9-cast area tension reinforcement, 10-cast area connecting reinforcement, 11-formwork, 12-joint waterstop, 13-joint steel bar clip, 14-end sealing plate, 15-binding wire, 16-end steel bar clip, 17-end waterstop. DETAILED DESCRIPTION

[0025] Taking a railway tunnel as an example, waterstops are installed during the construction of the secondary lining in the tunnel. Figures 1 to 5As shown, the embedded waterstop fixing structure in the tunnel lining section includes a joint waterstop 12 provided at the connection between the poured secondary lining concrete 1 and the to-be-cast secondary lining concrete 6, an end waterstop 17 connected to the end of the to-be-cast secondary lining concrete 6, a cast area connecting bar 5 clamped and fixed on one side of the joint waterstop 12 and located within the poured secondary lining concrete 1, a to-be-cast area connecting bar 10 clamped and fixed on the other side of the joint waterstop 12 and located within the to-be-cast secondary lining concrete 6, and a joint steel bar clamp 13 connected and fixed between the cast area connecting bar 5 and the to-be-cast area connecting bar 10 to fix the joint waterstop 12. Both the joint waterstop 12 and the end waterstop 17 are steel-edged rubber belts.

[0026] In this embodiment, the waterstop 17 at the end is an L-shaped part, one vertical side of the L-shaped part is parallel and close to the end formwork 11 and is connected to the end cover plate 14 on the outside of the formwork 11 through a binding wire 15; the other horizontal side of the L-shaped part is arranged perpendicular to the formwork 11 and extends into the second lining concrete 6 to be poured, and the waterstop 17 at the end extending into the second lining concrete 6 to be poured is fixedly connected to the connecting reinforcement 10 in the area to be poured through the end steel bar clamp 16.

[0027] In this embodiment, at least two layers of cast area longitudinal bars 72 are provided at the top and bottom of the cast secondary lining concrete 1, cast area stirrups 3 are provided at intervals outside the cast area longitudinal bars 72, cast area tension bars 4 are provided between the two layers of cast area longitudinal bars 72, and cast area connecting bars 5 are provided between the two layers of cast area longitudinal bars 72 near the butt joint waterstop 12. At least two layers of to-be-cast area longitudinal bars 7 are provided at the top and bottom of the to-be-cast secondary lining concrete 6, to-be-cast area stirrups 8 are provided at intervals outside the to-be-cast area longitudinal bars 7, to-be-cast area tension bars 9 are provided between the two layers of to-be-cast area longitudinal bars 7, and cast area connecting bars 5 are provided between the two layers of to-be-cast area longitudinal bars 7 near the butt joint waterstop 12 or the head waterstop.

[0028] In this embodiment, the connecting bars 5 in the cast area or the connecting bars 10 in the uncast area are C-shaped members, with upper and lower connecting bars provided at the upper and lower ends of the openings. The upper and lower connecting bars are J-shaped members and are connected to the longitudinal bars 72 in the cast area or the longitudinal bars 7 in the uncast area, respectively. The C-shaped openings of the connecting bars 5 in the cast area and the connecting bars 10 in the uncast area are arranged opposite each other, and the C-shaped openings are corresponding to the insertion of the butt-jointed steel bar clips 13.

[0029] In this embodiment, the butt joint steel bar clip 13 is made of steel bars with a diameter of 6 mm. The butt joint steel bar clip 13 is a long C-shaped piece or an elliptical piece. The opening of the C-shaped piece or one end of the elliptical piece is inserted into the opening of the C-shaped piece of the connecting reinforcement 10 in the front pouring area, and the other end of the C-shaped piece opening or the other end of the elliptical piece is inserted into the opening of the C-shaped piece of the connecting reinforcement in the front built area; the butt joint water stop 12 is fixedly connected inside the butt joint steel bar clip 13; the butt joint water stop 12 is linearly and symmetrically installed in the poured second lining concrete 1 and the second lining concrete 6 to be poured.

[0030] In this embodiment, the end steel bar clamp 16 is made of 6mm diameter steel bars. The end steel bar clamp 16 is a C-shaped piece with upper and lower connecting bars provided at the upper and lower ends of the opening. The bottom length of the C-shaped piece is shorter than the top length, and the difference between the top and bottom lengths is no less than the width of the vertical portion of the waterstop 17 at the end. The upper and lower connecting bars of the end steel bar clamp 16 are respectively connected to the end cover plate 14 by binding wires 15 through the template 11. The end cover plate 14 is made of steel bar segments or wooden boards.

[0031] In this embodiment, a template 11 is provided within the design range of the second lining concrete 6 to be poured, and the template 11 is located at the bottom, side and end of the second lining concrete 6 to be poured; the bottom of the template 11 overlaps the lower part of the poured second lining concrete 1, and the inner side of the template 11 at the end is close to the vertical part of the water stop strip 17 at the end.

[0032] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed structure for embedded waterstop in tunnel lining section, characterized in that: The invention comprises a joint water stop (12) provided at the connection between the poured second lining concrete (1) and the to-be-cast second lining concrete (6), an end water stop (17) connected to the end of the to-be-cast second lining concrete (6), a poured area connecting bar (5) clamped and fixed on one side of the joint water stop (12) and located in the poured second lining concrete (1), a to-be-cast area connecting bar (10) clamped and fixed on the other side of the joint water stop (12) and located in the to-be-cast second lining concrete (6), and a joint steel bar clamp (13) connected to the joint water stop (12) between the poured area connecting bar (5) and the to-be-cast area connecting bar (10); The end water stop (17) is an L-shaped member, one vertical side of the L-shaped member is parallel to and close to the end template (11) and is connected to the end cover plate (14) outside the template (11) through a binding wire (15); the other horizontal side of the L-shaped member is arranged perpendicular to the template (11) and extends into the second lining concrete (6) to be poured, and the end water stop (17) extending into the second lining concrete (6) to be poured is fixedly connected to the connecting reinforcement (10) of the to-be-cast area through the end reinforcement clamp (16); The end steel bar clamp (16) is a C-shaped piece and upper and lower connecting bars are provided at the upper and lower ends of the opening, and the bottom length of the C-shaped piece is shorter than the top length, and the difference between the top length and the bottom length is not less than the width of the vertical portion of the water stop strip (17) at the end; The upper connecting bars and the lower connecting bars of the end steel bar clamp (16) are respectively connected to the end cover plate (14) through the template (11) via the binding wire (15), and the end cover plate (14) is made of a steel bar segment or a wooden board.

2. A tunnel lining section embedded waterstop fixing structure according to claim 1, characterized in that: At least two layers of cast area longitudinal reinforcement (2) are provided at the top and bottom of the cast secondary lining concrete (1), cast area stirrups (3) are provided at intervals outside the cast area longitudinal reinforcement (2), cast area tension reinforcement (4) is provided between the two layers of cast area longitudinal reinforcement (2), and cast area connecting reinforcement (5) is provided between the two layers of cast area longitudinal reinforcement (2) near the joint water stop (12).

3. A tunnel lining section embedded waterstop fixing structure according to claim 2, characterized in that: At least two layers of longitudinal reinforcement (7) of the to-be-cast area are provided at the top and bottom of the to-be-cast second lining concrete (6), stirrups (8) of the to-be-cast area are provided at intervals outside the longitudinal reinforcement (7) of the to-be-cast area, tension reinforcement (9) of the to-be-cast area is provided between the two layers of longitudinal reinforcement (7) of the to-be-cast area, and connecting reinforcement (5) of the already-cast area is provided between the two layers of longitudinal reinforcement (7) of the to-be-cast area near the joint water stop (12) or the head water stop.

4. A tunnel lining section embedded waterstop fixing structure as claimed in claim 3, characterized in that: The connecting bars (5) of the poured area or the connecting bars (10) of the area to be poured are C-shaped members, and upper and lower connecting bars are provided at the upper and lower ends of the opening. The upper and lower connecting bars are J-shaped members and are respectively connected to the longitudinal bars (2) of the poured area or the longitudinal bars (7) of the area to be poured.

5. A tunnel lining section embedded waterstop fixing structure as claimed in claim 4, characterized in that: The C-shaped openings of the connecting reinforcement (5) in the poured area and the connecting reinforcement (10) in the to-be-cast area are arranged relative to each other, and the C-shaped openings correspond to the butt-jointed reinforcement clips (13).

6. A tunnel lining section embedded waterstop fixing structure according to claim 5, characterized in that: The butt joint steel bar clip (13) is a long C-shaped piece or an oval piece, the opening of the C-shaped piece or one end of the oval piece is inserted into the opening of the C-shaped piece of the connecting reinforcement (10) in the front pouring area, and the other end of the C-shaped piece opening or the other end of the oval piece is inserted into the opening of the C-shaped piece of the connecting reinforcement in the front built area; the butt joint steel bar clip (13) is fixedly connected to the butt joint water stop (12); the butt joint water stop (12) is linearly and symmetrically installed in the poured second lining concrete (1) and the second lining concrete (6) to be poured.

7. The tunnel lining section embedded waterstop fixing structure according to claim 1, characterized in that: A template (11) is provided within the design range of the second lining concrete (6) to be poured. The template (11) is located at the bottom, side, and end of the second lining concrete (6) to be poured. The bottom of the template (11) overlaps the lower part of the poured second lining concrete (1), and the inner side of the template (11) at the end is in close contact with the vertical part of the water stop (17) at the end.

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