Water stop structure for joint of wave wall and core wall top of asphalt core wall dam

Abstract

The utility model belongs to the technical field of hydropower station foundation engineering equipment, and relates to a water stop structure for a joint of a wave wall and a core wall top of an asphalt core wall dam, which comprises a water stop piece and a first U-shaped part, the second U-shaped part is arranged below the first U-shaped part, an opening of the second U-shaped part faces upwards, one end of the second U-shaped part is connected with the other end of the first U-shaped part, the other end of the second U-shaped part is connected with the other side wall of the top seam, and the second U-shaped part and the first U-shaped part are in central symmetry. According to the utility model, the water stop strip can deform when the concrete wave wall and the asphalt core wall move up and down in a staggered manner along the vertical direction, so that the water stop strip can better adapt to a vertical staggered deformation mode at a top joint formed between the concrete wave wall and the asphalt core wall; the water stop structure is prevented from being damaged due to the fact that the water stop piece is damaged in the actual operation process, the service life of the water stop piece is prolonged, the water stop effect is improved, and therefore the anti-seepage performance of the dam body structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydropower station foundation engineering and relates to a water-stopping structure for a seam between a wave-breaking wall and a core wall top of an asphalt core wall dam. Background Art

[0002] Asphalt concrete core wall dam is an earth-rock dam with an asphalt concrete wall as an anti-seepage body in the middle of the dam body. Asphalt concrete has good anti-seepage and deformation adaptability. When there is a lack of natural anti-seepage soil near the dam site, asphalt concrete can be used as the anti-seepage core wall of the earth-rock dam, and the dam shells on both sides can be made of various permeable, semi-permeable sand and gravel or rockfill. The asphalt concrete core wall dam construction technology is a dam construction technology with mature construction equipment and rich construction experience. The core wall has a good anti-seepage effect and is currently widely used in China.

[0003] The key technical issues in the anti-seepage of asphalt core wall dam structure lie in the anti-seepage performance of the core wall itself and the waterproof structure of the connection joint between the core wall and the adjacent buildings. At present, the traditional commonly used waterproof structures include Z-type, W-type, U-type and F-type, etc. according to the location and type. For the joint between the wave wall and the core wall top of the asphalt core wall dam, Z-type or U-type waterproofing is commonly used.

[0004] However, the above-mentioned type of water-stopping structure has poor adaptability to the deformation mode at the location of the structural seam, which often easily causes damage to the water-stopping structure during actual operation, reduces the water-stopping effect, and thus causes a decrease in the anti-seepage performance of the dam structure. Utility Model Content

[0005] The purpose of the utility model is to provide a water-stopping structure for the joint between the wave-breaking wall and the core wall top of an asphalt core wall dam, which can better adapt to the deformation mode at the location of the structural joint, avoid damage to the water-stopping structure during actual operation, improve the water-stopping effect, and thus improve the anti-seepage performance of the dam structure.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a water-stopping structure for the joint between the wave-breaking wall and the core wall top of an asphalt core wall dam as follows:

[0007] A water-stopping structure for the joint between a wave-breaking wall and a core wall top of an asphalt core wall dam, comprising:

[0008] A water stop plate is arranged in the top seam and along the length direction of the top seam. The water stop plate includes:

[0009] a first U-shaped portion, the opening of the first U-shaped portion is downward, and one end of the first U-shaped portion is connected to a side wall of the top seam;

[0010] The second U-shaped portion is arranged below the first U-shaped portion, with its opening facing upward, one end of the second U-shaped portion connected to the other end of the first U-shaped portion, and the other end of the second U-shaped portion connected to the other side wall of the top seam, and the second U-shaped portion is centrally symmetrical with the first U-shaped portion.

[0011] The utility model is also characterized in that:

[0012] A first horizontal portion is arranged between the first U-shaped portion and one side wall of the top seam, the first horizontal portion is embedded in one side wall of the top seam, one end of the first horizontal portion is connected to the end of the first U-shaped portion, and a second horizontal portion is arranged between the second U-shaped portion and the other side wall of the top seam, the second horizontal portion is embedded in the other side wall of the top seam, one end of the second horizontal portion is connected to the end of the second U-shaped portion.

[0013] A first bending portion is provided at the other end of the first horizontal portion, one end of the first bending portion is connected to the other end of the first horizontal portion, and the other end of the first bending portion is bent downward; a second bending portion is provided at the other end of the second horizontal portion, one end of the second bending portion is connected to the other end of the second horizontal portion, and the other end of the second bending portion is bent downward and symmetrical with the first bending portion.

[0014] The included angle between the first bending portion and the horizontal plane is 30-45°, and the included angle between the second bending portion and the horizontal plane is 30-45°.

[0015] The widths of the first bending portion and the second bending portion are the same and are both 3 to 5 cm.

[0016] The widths of the first horizontal portion and the second horizontal portion are the same and are both 15 to 30 cm.

[0017] The width and height of the first U-shaped portion and the second U-shaped portion are the same, the width of the first U-shaped portion and the second U-shaped portion are both 2-5 cm, and the height of the first U-shaped portion and the second U-shaped portion are both 8-12 cm.

[0018] The water stop is made of copper

[0019] The utility model provides a water-stopping structure for the joint between the wave-breaking wall and the core wall top of an asphalt core wall dam, which has the following advantages:

[0020] First, through the arrangement of the first U-shaped portion and the second U-shaped portion, the water stop plate can be deformed as the concrete wave-breaking wall and the asphalt core wall move vertically up and down, so that the water stop plate can better adapt to the vertical displacement deformation mode at the top joint formed between the concrete wave-breaking wall and the asphalt core wall, thereby avoiding damage to the water stop structure caused by damage to the water stop plate during actual operation, increasing the service life of the water stop plate, improving the water stopping effect, and thus improving the anti-seepage performance of the dam structure.

[0021] Second, through the arrangement of the first horizontal portion, the first bent portion, the second horizontal portion and the second bent portion, the water stop plate can be more firmly connected to the concrete wave-breaking wall and the asphalt core wall, respectively, thereby preventing the water stop plate from falling off when the concrete wave-breaking wall and the asphalt core wall form a vertical dislocation deformation at the top joint, thereby further increasing the service life of the water stop plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the main structure of the water stop piece of the utility model.

[0024] Reference numerals:

[0025] 1. Concrete wave-breaking wall; 2. Asphalt core wall; 3. Water stop plate; 301. First U-shaped portion; 302. Second U-shaped portion; 303. First horizontal portion; 304. Second horizontal portion; 305. First bending portion; 306. Second bending portion. DETAILED DESCRIPTION

[0026] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, such as A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two. In the following, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0027] like Figure 1-2As shown, the utility model provides a water-stopping structure for the top joint of the wave-breaking wall and the core wall of an asphalt core wall dam, comprising: a water-stopping sheet 3, the water-stopping sheet 3 being arranged in the top joint, that is, the water-stopping sheet 3 being arranged in the top joint formed by the concrete wave-breaking wall 1 and the asphalt core wall 2, the water-stopping sheet 3 being arranged along the length direction of the top joint to prevent water from entering the rockfill area upward from the top joint, the water-stopping sheet 3 being made of copper material, and due to the good flexibility of the copper material, the water-stopping sheet 3 is not easily damaged during the stretching and deformation process, thereby improving the service life of the water-stopping sheet 3, the water-stopping sheet 3 comprises a first U-shaped portion 301, the opening of the first U-shaped portion 301 is downward, one end of the first U-shaped portion 301 is connected to a side wall of the top joint, a second U-shaped portion 302 is arranged below the first U-shaped portion 301, and the second U-shaped portion 302 is arranged below the first U-shaped portion 301. The opening of the second U-shaped portion 302 is upward, one end of the second U-shaped portion 302 is connected to the other end of the first U-shaped portion 301, and the other end of the second U-shaped portion 302 is connected to the other side wall of the top joint, and the second U-shaped portion 302 is centrally symmetrical with the first U-shaped portion 301. Through the arrangement of the first U-shaped portion 301 and the second U-shaped portion 302, the water stop plate can be deformed as the concrete wave-breaking wall 1 and the asphalt core wall 2 move up and down along the vertical dislocation, so that the water stop plate 3 can better adapt to the vertical dislocation deformation mode of the top joint formed by the concrete wave-breaking wall 1 and the asphalt core wall 2, thereby avoiding the water stop plate 3 from easily causing damage to the water stop structure during actual operation, increasing the service life of the water stop plate 3, and improving the water stop effect, thereby improving the anti-seepage performance of the dam structure.

[0028] like Figure 2 As shown, a first horizontal portion 303 is provided between the first U-shaped portion 301 and one side wall of the top joint, and the first horizontal portion 303 is pre-buried inside one side wall of the top joint, that is, the first horizontal portion 303 is pre-buried in the concrete wave-breaking wall 1, and the first horizontal portion 303 is a plate-like structure, so that after the first horizontal portion 303 is pre-buried in the concrete wave-breaking wall 1, the contact area with the concrete wave-breaking wall 1 is increased, so that the first horizontal portion 303 is more firmly connected to the concrete wave-breaking wall 1, one end of the first horizontal portion 303 is connected to the end of the first U-shaped portion 301, and the second U-shaped portion 302 is connected to the top joint. A second horizontal portion 304 is provided between the other side walls of the seam, and the second horizontal portion 304 is embedded in the other side wall of the top seam, that is, the second horizontal portion 304 is embedded in the asphalt core wall 2. The second horizontal portion 304 is also a plate-like structure, so that after the second horizontal portion 304 is embedded in the asphalt core wall 2, the contact area with the asphalt core wall 2 is increased, so that the second horizontal portion 304 is more firmly connected to the asphalt core wall 2, and one end of the second horizontal portion 304 is connected to the end of the second U-shaped portion 302, so that the water stop plate 3 is more firmly connected to the concrete wave-breaking wall 1 and the asphalt core wall 2 respectively.

[0029] like Figure 2As shown, the other end of the first horizontal portion 303 is provided with a first bending portion 305, one end of the first bending portion 305 is connected to the other end of the first horizontal portion 303, and the other end of the first bending portion 305 is bent downward, that is, the first bending portion 305 is an inclined plate-like structure, the first bending portion 305 is pre-buried in the concrete wave-breaking wall 1, and increases the resistance of the first horizontal portion 303 to move inside the concrete wave-breaking wall 1, and further makes the first horizontal portion 303 and the concrete wave-breaking wall 1 more firmly connected, the other end of the second horizontal portion 304 is provided with a second bending portion 306, one end of the second bending portion 306 is connected to the other end of the second horizontal portion 304, and the other end of the second bending portion 306 is bent downward and symmetrical with the first bending portion 305, the second bending portion 306 is pre-buried in the asphalt core wall 2, and increases the resistance of the second horizontal portion 304 to move inside the asphalt core wall 2, and further makes the second horizontal portion 304 and the asphalt core wall 2 more firmly connected.

[0030] like Figure 2 As shown, the angle between the first bending portion 305 and the horizontal plane is 30-45°, and the angle between the second bending portion 306 and the horizontal plane is 30-45°.

[0031] like Figure 2 As shown, the widths of the first bending portion 305 and the second bending portion 306 are the same and are both 3 to 5 cm.

[0032] like Figure 2 As shown, the widths of the first horizontal portion 303 and the second horizontal portion 304 are the same and are both 15 to 30 cm.

[0033] like Figure 2 As shown, the width and height of the first U-shaped portion 301 and the second U-shaped portion 302 are the same, the width of the first U-shaped portion 301 and the second U-shaped portion 302 are both 2 to 5 cm, and the height of the first U-shaped portion 301 and the second U-shaped portion 302 are both 8 to 12 cm.

[0034] Working principle: When in use, the water stop sheet 3 is arranged in the top joint formed by the concrete wave-breaking wall 1 and the asphalt core wall 2 along the length direction of the top joint, and the first U-shaped portion 301 is opened downward and the second U-shaped portion 302 is opened upward in the top joint. At the same time, the first horizontal portion 303 and the first bent portion 305 are pre-embedded in the concrete wave-breaking wall 1, and the second horizontal portion 304 and the second bent portion 306 are pre-embedded in the asphalt core wall 2. When the concrete wave-breaking wall 1 and the asphalt core wall 2 move up and down along the vertical dislocation, the first U-shaped portion 301 and the second U-shaped portion 302 can be deformed with the vertical dislocation at the joint, so as to better adapt to the vertical dislocation deformation mode at the top joint formed by the concrete wave-breaking wall 1 and the asphalt core wall 2, so as to avoid the water stop sheet 3 from easily causing damage to the water stopping structure during actual operation.

[0035] The utility model provides a water-stopping structure for the joint between the wave-breaking wall and the core wall top of an asphalt core wall dam, which has the following advantages:

[0036] First, through the arrangement of the first U-shaped portion and the second U-shaped portion, the water stop plate can be deformed as the concrete wave-breaking wall and the asphalt core wall move vertically up and down, so that the water stop plate can better adapt to the vertical displacement deformation mode at the top joint formed between the concrete wave-breaking wall and the asphalt core wall, thereby avoiding damage to the water stop structure caused by damage to the water stop plate during actual operation, increasing the service life of the water stop plate, improving the water stopping effect, and thus improving the anti-seepage performance of the dam structure.

[0037] Second, through the arrangement of the first horizontal portion, the first bent portion, the second horizontal portion and the second bent portion, the water stop plate can be more firmly connected to the concrete wave-breaking wall and the asphalt core wall, respectively, thereby preventing the water stop plate from falling off when the concrete wave-breaking wall and the asphalt core wall form a vertical dislocation deformation at the top joint, thereby further increasing the service life of the water stop plate.

[0038] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A water-stopping structure for the joint between the wave-breaking wall and the core wall top of an asphalt core wall dam, characterized in that: include: A water stop sheet (3), the water stop sheet (3) being arranged in the top seam, the water stop sheet (3) being arranged along the length direction of the top seam, and the water stop sheet (3) comprising: A first U-shaped portion (301), the opening of the first U-shaped portion (301) is downward, and one end of the first U-shaped portion (301) is connected to a side wall of the top seam; The second U-shaped portion (302) is arranged below the first U-shaped portion (301), the opening of the second U-shaped portion (302) is upward, one end of the second U-shaped portion (302) is connected to the other end of the first U-shaped portion (301), the other end of the second U-shaped portion (302) is connected to the other side wall of the top seam, and the second U-shaped portion (302) is centrally symmetrical with the first U-shaped portion (301).

2. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 1 is characterized in that: A first horizontal portion (303) is provided between the first U-shaped portion (301) and one side wall of the top seam, the first horizontal portion (303) is pre-buried inside one side wall of the top seam, one end of the first horizontal portion (303) is connected to the end of the first U-shaped portion (301), and a second horizontal portion (304) is provided between the second U-shaped portion (302) and the other side wall of the top seam, the second horizontal portion (304) is pre-buried inside the other side wall of the top seam, one end of the second horizontal portion (304) is connected to the end of the second U-shaped portion (302).

3. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 2 is characterized in that: The other end of the first horizontal portion (303) is provided with a first bending portion (305), one end of the first bending portion (305) is connected to the other end of the first horizontal portion (303), and the other end of the first bending portion (305) is bent downward; the other end of the second horizontal portion (304) is provided with a second bending portion (306), one end of the second bending portion (306) is connected to the other end of the second horizontal portion (304), and the other end of the second bending portion (306) is bent downward and is symmetrical with the first bending portion (305).

4. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 3 is characterized in that: The included angle between the first bending portion (305) and the horizontal plane is 30 to 45 degrees, and the included angle between the second bending portion (306) and the horizontal plane is 30 to 45 degrees.

5. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 4 is characterized in that: The widths of the first bending portion (305) and the second bending portion (306) are the same and are both 3 to 5 cm.

6. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 4 is characterized in that: The widths of the first horizontal portion (303) and the second horizontal portion (304) are the same and are both 15 to 30 cm.

7. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 1 is characterized in that: The width and height of the first U-shaped portion (301) and the second U-shaped portion (302) are the same, the width of the first U-shaped portion (301) and the second U-shaped portion (302) are both 2 to 5 cm, and the height of the first U-shaped portion (301) and the second U-shaped portion (302) are both 8 to 12 cm.

8. The water-stopping structure of the joint between the wave-breaking wall and the core wall top of the asphalt core wall dam according to claim 1 is characterized in that: The water stop sheet (3) is made of copper material.

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