Tunnel inverted arch embedded type water stop belt fixing device

Abstract

The utility model provides a tunnel inverted arch embedded type water stop belt fixing device, and belongs to the technical field of building construction. In order to solve the problem of poor waterproof and water-stopping effects caused by deviation of a buried water-stopping belt in current tunnel inverted arch construction, an arc-shaped supporting frame, positioning components and restraining components are arranged, the arc-shaped supporting frame is matched with the radian of a tunnel inverted arch, the positioning components are arranged at the two ends of the arc-shaped supporting frame in the length direction, and the restraining components are arranged at the two ends of the arc-shaped supporting frame in the length direction. The restraining component is connected to the top of the arc-shaped supporting frame and plays a role in positioning and fixing the middle of the middle-buried type water stop belt, the phenomenon that the middle-buried type water stop belt deviates due to tunnel inverted arch concrete pouring construction is prevented, and the problem that the middle-buried type water stop belt deviates and is not centered in the inverted arch concrete pouring process is effectively solved. The fixing device is simple in structure, convenient in material taking and low in manufacturing cost, can play an effective fixing role in the construction of the middle-buried water stop belt of the tunnel inverted arch, and is beneficial to the smooth promotion of a construction project.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and particularly relates to a fixing device for an embedded water stop belt in a tunnel invert. Background Art

[0002] The invert is a reverse arch structure arranged at the bottom of the tunnel to improve the stress condition of the upper support structure. It is one of the main components of the tunnel structure. On the one hand, it effectively transfers the stratum pressure above the tunnel through the tunnel side wall structure or the load on the road surface to the ground. On the other hand, it effectively resists the reaction force transmitted from the lower stratum of the tunnel, can bear the permanent load of the stratum and the temporary load (dynamic load) of the road surface. The invert and the secondary lining form the whole tunnel, increasing the structural stability.

[0003] When constructing the tunnel invert, a water stop belt is often used, mainly including an embedded water stop belt and a back-mounted water stop belt. The embedded water stop belt is mainly used inside the concrete such as concrete deformation joints and expansion joints. It has the ability to adapt to the expansion and contraction deformation of the concrete with the elasticity of the rubber material and the structural form. Utilizing the high elasticity and compression deformation of the rubber, it generates elastic deformation under various loads, thereby playing a role in fastening and sealing to effectively prevent the leakage and seepage of building components and the shock absorption and buffering effect, and can ensure the service life of the engineering building. In many projects, the embedded water stop belt and the back-mounted water stop belt are used simultaneously, significantly enhancing the waterproof and water stop effect.

[0004] However, currently, the embedded water stop belt is mostly fixed by clamping it between the lower formwork and the upper formwork of the invert. In this way, when pouring the invert concrete and vibrating, the embedded water stop belt will largely shift from the expansion joint, resulting in the problem that the embedded water stop belt is not centered after pouring, making the concrete deformation joint, expansion joint, etc. unable to achieve a better water stop effect. Summary of the Invention

[0005] Aiming at the deficiencies existing in the above-mentioned prior art, the utility model provides a fixing device for an embedded water stop belt in a tunnel invert. By setting an arc-shaped support frame, as well as a positioning member and a constraint member on the arc-shaped support frame, it plays a role in central positioning and fixing of the embedded water stop belt, preventing the phenomenon of the embedded water stop belt shifting due to the construction of pouring the tunnel invert concrete, so as to solve the problems existing in the background art.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0007] A fixing device for an embedded water stop belt in a tunnel invert includes an arc-shaped support frame, a positioning member and a constraint member. The arc-shaped support frame fits the radian of the tunnel invert. The positioning member is arranged at both ends in the length direction of the arc-shaped support frame, and the constraint member is connected to the top of the arc-shaped support frame.

[0008] As a further preferred solution of the above technical solution: The arc-shaped support frame includes an arc-shaped rod and a plurality of support rods, and the plurality of support rods are evenly distributed on the arc-shaped rod.

[0009] A further preferred implementation is that: the length of the support rod does not exceed the width of the embedded waterstop.

[0010] As a further preferred solution of the above technical solution: The positioning member is two insertion rods, and the two insertion rods are respectively connected to the support rods at both ends of the arc-shaped rod.

[0011] A further preferred implementation is that: the two insertion rods are both located on the opposite sides of the two support rods.

[0012] A further preferred implementation is that: the insertion rod is in an arc-shaped structure, and the radian of the insertion rod is consistent with the radian of the arc-shaped rod.

[0013] As a further preferred solution of the above technical solution: The constraint member includes a U-shaped clip and a plurality of fasteners. The U-shaped clip is connected to the arc-shaped rod, and the plurality of fasteners are evenly connected to the U-shaped clip. One side of the embedded waterstop extends into the U-shaped clip, and the embedded waterstop is clamped by the plurality of fasteners.

[0014] A further preferred implementation is that: the U-shaped clip is in an arc-shaped structure, and its radian is adapted to the radian of the arc-shaped rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. By setting an arc-shaped support frame that fits the radian of the tunnel invert, the embedded waterstop is made to be consistent with the structure of the tunnel invert after laying, and in cooperation with the insertion rods at both ends of the arc-shaped support frame, the center of the embedded waterstop is limited, ensuring that the embedded waterstop is located in the middle of the expansion joint of the invert. Through the combined use of the U-shaped clip and the fasteners provided on the arc-shaped support frame, the embedded waterstop is fixed, so that the embedded waterstop is not affected by the casting of the invert concrete, effectively ensuring the positioning and fixation of the embedded waterstop during the construction of the tunnel invert.

[0017] 2. The device of the utility model has a simple structure, convenient material taking and low manufacturing cost, and can be reused during the staged installation of the embedded waterstop, bringing great convenience to the waterproof and waterstop construction of the tunnel invert. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required in the embodiments will be briefly introduced below.

[0019] Figure 1 It is a schematic diagram of the overall structure of a fixing device for an embedded waterstop in a tunnel invert of the present utility model;

[0020] Figure 2 Another perspective view of the overall structure of the present utility model;

[0021] Figure 3 Partial enlarged view of the restraint member of the present utility model;

[0022] Figure 4 Schematic diagram of the structure of the present utility model without fasteners;

[0023] Figure 5 Schematic diagram of the structure of the arc-shaped support frame of the present utility model;

[0024] Figure 6 Use state diagram of the present utility model in cooperation with the embedded waterstop;

[0025] In the figure: 1. Arc-shaped support frame; 11. Arc-shaped rod; 12. Support rod; 2. Positioning member; 3. Restraint member; 31. U-shaped clip; 32. Fastener; 33. Screw hole; 4. Embedded waterstop. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments, rather than all of the embodiments. For those of ordinary skill in the art, other embodiments can be obtained without creative efforts.

[0027] In the description of the present application, unless otherwise specified and limited, the orientation terms such as "upper", "lower", "left", "right", "front", "rear", etc. in the terms are only used to represent relative positional relationships. When the absolute position of the object being described changes, the corresponding positional relationships may change.

[0028] Referring to Figure 1-6 , the present utility model provides a fixing device for an embedded waterstop in the inverted arch of a tunnel. The fixing device is made of metal materials and is mainly processed and manufactured from engineering waste materials. It includes an arc-shaped support frame 1, a positioning member 2 and a restraint member 3. The arc-shaped support frame 1 fits the curvature of the inverted arch of the tunnel. During the actual project construction, an arc-shaped support frame 1 adapted to the excavation structure of the inverted arch can be fabricated. The positioning member 2 is arranged at both ends in the length direction of the arc-shaped support frame 1. The positioning member 2 can be used for centering the embedded waterstop 4. The restraint member 3 is connected to the top of the arc-shaped support frame 1. The restraint member 3 is used to fix one side of the embedded waterstop 4 to prevent the position deviation of the embedded waterstop 4 during the concrete pouring.

[0029] Such as Figure 4-5As shown in the figure, the arc-shaped support frame 1 includes an arc-shaped rod 11 and a plurality of support rods 12. The plurality of support rods 12 are evenly distributed on the arc-shaped rod 11. In this embodiment, the arc-shaped rod 11 is made into a shape that fits the arc of the tunnel invert. There are seven support rods 12 in total, and the length of each support rod 12 is greater than half of the width of the embedded waterstop 4 but does not exceed the width of the embedded waterstop 4.

[0030] Specifically, the positioning member 2 is two insertion rods. As Figure 1-2 shown in the figure, the two insertion rods are respectively connected to the support rods 12 at both ends of the arc-shaped rod 11 and are located on the side where the two support rods 12 are close to each other. The insertion rods are also in an arc-shaped structure, and the arc of the insertion rods is consistent with the arc of the arc-shaped rod 11. The two insertion rods are respectively inserted into the holes at both ends of the embedded waterstop 4 to position the center of the embedded waterstop 4.

[0031] As Figure 3-4 shown in the figure, the restraint member 3 includes a U-shaped clamping member 31 and a plurality of fasteners 32. The U-shaped clamping member 31 is welded to the arc-shaped rod 11. The U-shaped clamping member 31 is in an arc-shaped structure, and its arc is adapted to the arc of the arc-shaped rod 11. A plurality of screw holes 33 are evenly opened on the U-shaped clamping member 31, and the plurality of fasteners 32 are connected to the U-shaped clamping member 31 through the plurality of screw holes 33; in this embodiment, there are five screw holes 33 and fasteners 32, and the fasteners 32 are preferably tightening bolts. During construction, one side of the embedded waterstop 4 extends into the U-shaped clamping member 31, and the embedded waterstop 4 is clamped by the plurality of fasteners 32.

[0032] Embodiment:

[0033] A fixing device for an embedded waterstop in a tunnel invert. In actual application, refer to Figure 6 :

[0034] During construction, after the tunnel invert is excavated and the invert base is treated, the geotextile, waterproof board, and backing waterstop laying processes are carried out in sequence. Then, the lower formwork of the invert is installed, and the fixing device of the present utility model is placed above the upper formwork. Then, one side of the embedded waterstop 4 is extended into the U-shaped clamping member 31, and the insertion rods at both ends are respectively inserted into the holes at both ends of the embedded waterstop 4 to play a role in positioning the middle part of the embedded waterstop 4. Then, the embedded waterstop 4 is reinforced by the cooperation of the fasteners 32 and the screw holes 33. Then, the upper formwork of the invert is installed and reinforced above the embedded waterstop 4. Then, the abdominal formwork of the invert is installed and reinforced, and the invert concrete is poured by feeding window by window and vibrating. After completion, each formwork and the fixing device of the present utility model are removed and transferred to the next stage for use.

[0035] It should be clear that the detailed description of the embodiments of the present invention provided in the accompanying drawings above is only for further illustration of the present invention, and is not intended to limit the scope of the present invention claimed, but only represents the selected embodiments of the present invention. Based on the embodiments of the present invention, some non-essential improvements and adjustments made by those of ordinary skill in the art according to the above content of the present invention all fall within the protection scope of the present invention.

Claims

1. A fixing device for buried water stop in tunnel invert, characterized in that: The invention comprises an arc-shaped support frame (1), a positioning member (2) and a restraining member (3); the arc-shaped support frame (1) matches the curvature of the tunnel invert; the positioning member (2) is arranged at both ends of the arc-shaped support frame (1) in the length direction; and the restraining member (3) is connected to the top of the arc-shaped support frame (1).

2. A tunnel invert embedded waterstop fixing device according to claim 1, characterized in that: The arc-shaped support frame (1) comprises an arc-shaped rod (11) and a plurality of support rods (12), wherein the plurality of support rods (12) are evenly distributed on the arc-shaped rod (11).

3. The device for fixing a waterstop embedded in a tunnel invert according to claim 2, characterized in that: The length of the support rod (12) does not exceed the width of the embedded water stop (4).

4. The device for fixing a waterstop embedded in a tunnel invert according to claim 3, characterized in that: The positioning components (2) are two insertion rods, which are respectively connected to the support rods (12) at both ends of the arc rod (11).

5. The device for fixing a waterstop embedded in a tunnel invert according to claim 4, characterized in that: The two insertion rods are located on opposite sides of the two support rods (12).

6. The device for fixing a waterstop embedded in a tunnel invert according to claim 5, characterized in that: The insertion rod has an arc-shaped structure, and the curvature of the insertion rod is consistent with the curvature of the arc-shaped rod (11).

7. The device for fixing a waterstop embedded in a tunnel invert according to claim 6, characterized in that: The restraining member (3) comprises a U-shaped clamp (31) and a plurality of fasteners (32); the U-shaped clamp (31) is connected to the arc-shaped rod (11); the plurality of fasteners (32) are evenly connected to the U-shaped clamp (31); one side of the embedded waterstop (4) extends into the U-shaped clamp (31); and the embedded waterstop (4) is clamped by the plurality of fasteners (32).

8. The device for fixing a waterstop embedded in a tunnel invert according to claim 7, characterized in that: The U-shaped clamp (31) is an arc-shaped structure, and its curvature matches the curvature of the arc-shaped rod (11).

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