Water stop screw rod for underground engineering in plateau area

Abstract

The utility model discloses a waterstop screw rod for underground engineering in plateau areas, which comprises a screw rod body and T-shaped buckles, the two ends of the screw rod body are connected with the T-shaped buckles through threads, a waterstop ring is arranged in the middle of the screw rod body, an annular groove is dug in the middle of the outer wall of the waterstop ring, and a rubber waterstop belt is arranged in the annular groove. And a plug is arranged between the T-shaped buckle and the water stop ring and is formed by processing expansion rubber. Due to the fact that the plug and the water stop ring with the rubber water stop belt are arranged on the screw rod, the water stop screw rod expands by 200% when encountering water, the waterproof performance of the water stop screw rod is enhanced, the hidden danger of water leakage caused by concrete shrinkage due to overlarge temperature difference is effectively restrained, and the service life of the water stop screw rod is prolonged.

Description

Technical Field

[0001] This utility model relates to a water-stop screw rod, and more particularly to a water-stop screw rod for underground engineering in plateau areas, belonging to the field of shear wall construction technology. Background Technology

[0002] Water-stop tie rods are indispensable components in building construction, especially in the construction of basement shear walls. Their main functions include fixing formwork and controlling the thickness of concrete pouring. Traditional water-stop tie rods are usually made of metal with a welded water-stop plate in the middle and nuts at both ends for fixing the formwork. This design can meet the construction needs in normal environments. However, in the construction of underground shear walls in the Qinghai-Tibet Plateau region, due to the large temperature difference at high altitudes, the concrete shrinkage and deformation are more intense. Under such conditions, traditional water-stop tie rods are prone to gaps between the concrete and the wall due to concrete shrinkage, leading to water seepage. In addition, the high groundwater level and high water pressure mean that traditional water-stop tie rods cannot meet the on-site requirements for underground structures with high waterproofing requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a water-stop screw rod for underground engineering in plateau areas, which enhances the waterproof performance of the water-stop screw rod and effectively curbs the risk of water leakage caused by the shrinkage of concrete due to excessive temperature difference.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] A water-stop screw rod for underground engineering in plateau areas includes a screw rod body and a T-shaped buckle. The two ends of the screw rod body are connected to the T-shaped buckle by threads. A water-stop ring is provided in the middle of the screw rod body. An annular groove is excavated in the middle of the outer wall of the water-stop ring. A rubber water-stop strip is provided in the annular groove. A plug is provided between the T-shaped buckle and the plug.

[0006] The plugs are two in number and are symmetrically arranged on the screw bodies on both sides of the water-stop ring.

[0007] The plugs are arranged in a trapezoidal shape and are made of expanded rubber.

[0008] The width of the annular groove is 1 cm, and the size of the rubber waterstop is matched with the size of the annular groove.

[0009] The T-shaped buckles at both ends of the screw body are symmetrically distributed.

[0010] The positive and beneficial effects of this utility model are:

[0011] 1. This utility model forms a multi-layered waterproof barrier by setting a rubber waterstop in the annular groove on the outer wall of the waterstop, in conjunction with the use of a rubber plug. It expands by 200% when exposed to water, effectively preventing the risk of water leakage caused by the shrinkage of concrete due to excessive temperature difference. It is convenient to use and easy to operate.

[0012] 2. The expansion rubber waterstop of this utility model can still maintain good elasticity in low temperature environment. Even if the waterstop screw develops surface corrosion and water seepage, the expansion waterstop strip can still stop the water, effectively avoiding the gap between the concrete shrinkage and the waterstop screw, and extending the service life of the waterstop screw. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the plug of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the water-stop ring of this utility model;

[0016] Among them: 1-screw body, 2-T-shaped buckle, 3-plug, 4-waterstop ring, 5-annular groove, 6-rubber waterstop strip. Detailed Implementation

[0017] The present invention will be further explained and described below with reference to the accompanying drawings:

[0018] See the example. Figures 1-3 A water-stop screw rod for underground engineering in plateau areas includes a screw rod body 1 and a T-shaped buckle 2. The T-shaped buckle 2 is threadedly connected to both ends of the screw rod body 1. A water-stop ring 4 is provided in the middle of the screw rod body 1. An annular groove 5 is excavated in the middle of the outer wall of the water-stop ring 4. A rubber water-stop strip 6 is provided in the annular groove 5. A plug 3 is provided between the T-shaped buckle 2 and the water-stop ring 4.

[0019] There are two plugs 3, which are symmetrically arranged on the screw body 1 on both sides of the water-stop ring 4.

[0020] The sides of the plug 3 are arranged in a trapezoidal shape and are made of expanded rubber.

[0021] The width of the annular groove 5 is 1cm, and the size of the rubber waterstop 6 matches the size of the annular groove 5.

[0022] The T-shaped buckles 2 at both ends of the screw body 1 are symmetrically distributed.

[0023] As described above, it has a strong water-stopping effect and can be used in underground projects with deep foundation pits and high water levels.

[0024] As described above, the device provides a long-lasting water stop; even if the water-stop screw develops surface corrosion and leaks, the expansion water-stop strip can still stop the water.

[0025] As described above, this device can prevent gaps from forming between the concrete shrinkage at low temperatures and the water-stop screws, thus avoiding structural water seepage and subsequent losses caused by water seepage.

[0026] As described above, the device consists of three parts: T-shaped buckles at both ends and a waterproof tie rod in the middle. The waterproof tie rod is composed of five parts: the end caps are made of expanded rubber, the middle part is a steel water-stop ring, and an annular groove is carved into the outer wall of the steel water-stop ring, within which a matching expanded rubber water-stop strip is installed.

[0027] This invention enhances the waterproof performance of the screw rod by adding a plug and a water-swellable rubber water-stop strip in the middle of the water-stop ring. The water-swellable strip expands by 200% when exposed to water, effectively preventing leakage caused by concrete shrinkage due to excessive temperature differences and extending the service life of the screw rod.

Claims

1. A water stop screw for underground engineering in plateau areas, comprising a screw body (1) and a T-shaped buckle (2), characterized in that: The both ends of the screw body (1) are connected with T-shaped buckles (2) through threads, the middle part of the screw body (1) is provided with a water stop ring (4), the middle part of the outer wall of the water stop ring (4) is provided with an annular groove (5), the annular groove (5) is provided with a rubber water stop belt (6), and the T-shaped buckle (2) and the water stop ring (4) are provided with plugs (3).

2. The water stop screw for underground engineering in plateau area according to claim 1, characterized in that: The two plugs (3) are symmetrically arranged on the screw body (1) on the two sides of the water stop ring (4).

3. The water stop screw for underground engineering in plateau area according to claim 1, characterized in that: The plug (3) is in the shape of a trapezoid and is made of expanded rubber.

4. The water stop screw for underground engineering in plateau area according to claim 1, characterized in that: The width of the annular groove (5) is 1 cm, and the size of the rubber water stop belt (6) matches the size of the annular groove (5).

5. The water stop screw for underground engineering in plateau area according to claim 1, characterized in that: The T-shaped buckles (2) at the two ends of the screw body (1) are symmetrically distributed.

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