A combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam

Abstract

A combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam, comprising a gravity dam body and a reinforcement component. The reinforcement component is arranged at the lower end of the gravity dam body. The first upstream stabilizing plate and the second upstream stabilizing plate are fixedly arranged on the upstream side of the bottom surface of the gravity dam body. The first downstream stabilizing plate and the second downstream stabilizing plate are fixedly arranged on the downstream side of the bottom surface of the gravity dam body. A shear wall is fixedly arranged in the middle of the bottom surface of the gravity dam body, and a limiting plate is longitudinally fixedly arranged on the side surface of the shear wall. The tooth grooves formed by the first downstream stabilizing plate and the second downstream stabilizing plate can strengthen the stability between the downstream end of the gravity dam body and the ground layer, thereby avoiding the situation of left-right sliding imbalance of the gravity dam body. Multiple groups of shear walls are used to enhance the stability of the gravity dam body in the front-rear direction. At the same time, the contact area between the reinforcement structure and the ground layer can be further increased through the limiting plate, so as to further enhance the anti-sliding performance of the gravity dam foundation.

Description

Technical Field

[0001] The present invention relates to the technical field of combined reinforcement for gravity dam foundations, and in particular to a combined reinforcement structure for gravity dam foundations with multiple weak interlayers. Background Art

[0002] A gravity dam is a large-volume water retaining structure built with concrete or masonry. Its basic cross-section is a right triangle, and the whole is composed of several dam sections. Under the action of water pressure and other loads, the gravity dam mainly relies on the anti-sliding force generated by its own weight to meet the stability requirements, and at the same time relies on the pressure generated by its own weight to offset the tensile stress caused by water pressure to meet the strength requirements.

[0003] At present, there are multiple horizontal weak layers in the gravity dam foundation, resulting in poor anti-sliding stability and a risk of sliding instability along the weak layers. In view of this, research and improvement are carried out on the existing structure and deficiencies, and a combined reinforcement structure for gravity dam foundations with multiple weak interlayers is provided. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to solve the problems existing in the above background art, and provide a combined reinforcement structure for gravity dam foundations with multiple weak interlayers. Through this reinforcement structure, the connection strength between the gravity dam body and the ground layer can be enhanced, and the risk of sliding instability of the gravity dam body can be avoided.

[0005] To achieve the above technical features, the object of the present invention is realized as follows: A combined reinforcement structure for gravity dam foundations with multiple weak interlayers includes a gravity dam body and a reinforcement component. The reinforcement component is arranged at the lower end of the gravity dam body and is located within the ground layer. The reinforcement component includes a first upstream stabilizing plate, a second upstream stabilizing plate, a first downstream stabilizing plate, a second downstream stabilizing plate, a shear wall, and a limiting plate. The first upstream stabilizing plate and the second upstream stabilizing plate are fixedly arranged on the upstream side of the bottom surface of the gravity dam body, and the second upstream stabilizing plate is located on the downstream side of the first upstream stabilizing plate. The first downstream stabilizing plate and the second downstream stabilizing plate are fixedly arranged on the downstream side of the bottom surface of the gravity dam body, and the second downstream stabilizing plate is located on the upstream side of the first downstream stabilizing plate. A shear wall is fixedly arranged in the middle of the bottom surface of the gravity dam body, and a limiting plate is longitudinally fixed on the side surface of the shear wall.

[0006] One end of the shear wall is fixedly connected to the second upstream stabilizing plate, and the other end is fixedly connected to the second downstream stabilizing plate.

[0007] The limiting plates are evenly distributed, and the height of the limiting plates is equal to the height of the shear wall.

[0008] A diversion component for reducing uplift pressure is arranged between the shear walls. The diversion component includes a fixed frame, a drainage channel, and water passing ports. The limiting plates are fixedly arranged on the shear walls relatively and at intervals. The fixed frame is arranged between the shear walls without limiting plates. The drainage channel is arranged inside the fixed frame, and water passing ports are arranged at both the left and right ends of the fixed frame.

[0009] The fixed frames are equidistantly distributed on the bottom surface of the gravity dam body and are fixedly connected to the gravity dam body.

[0010] The fixed frames are in an L shape, and the drainage channels are connected to each other through pipes between the fixed frames.

[0011] The length of the fixed frame is equal to the distance between the first upstream stabilizing plate and the first downstream stabilizing plate.

[0012] The fixed frame is fitted and connected with the second upstream stabilizing plate and the second downstream stabilizing plate.

[0013] The depths of the first upstream stabilizing plate and the second upstream stabilizing plate are equal, the depths of the first downstream stabilizing plate and the second downstream stabilizing plate are equal, and the depth of the second upstream stabilizing plate is greater than the depth of the second downstream stabilizing plate.

[0014] The present invention has the following beneficial effects:

[0015] 1. Through the arrangement of the reinforcement component, the connection strength between the left end of the gravity dam body and the ground layer can be enhanced by using the tooth grooves formed between the first upstream stabilizing plate and the second upstream stabilizing plate. At the same time, the tooth grooves formed by the first downstream stabilizing plate and the second downstream stabilizing plate can also enhance the stability between the right end of the gravity dam body and the ground layer, thereby avoiding the situation of left - right sliding imbalance of the gravity dam body.

[0016] 2. By arranging the shear walls on the bottom surface of the gravity dam body, the stability of the gravity dam body in the front - rear direction can be enhanced by using multiple groups of shear walls. At the same time, the limiting plates can further increase the contact area between the reinforcement structure and the ground layer, thereby further enhancing the anti - sliding performance of the gravity dam foundation.

[0017] 3. Through the arrangement of the diversion component, groundwater can enter the drainage channel through the water passing ports, enabling the groundwater to flow inside the fixed frame. Thus, a flow channel can be provided for the groundwater, reducing the uplift pressure generated by the groundwater and further enhancing the anti - sliding stability of the gravity dam foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic front - view sectional structure diagram of the whole of the present invention.

[0019] Figure 2 It is a schematic left - view sectional structure diagram of the shear wall of the present invention.

[0020] Figure 3 This is a schematic view of the upward view structure of the shear wall of the present invention.

[0021] In the figure: the gravity dam body 1, the ground layer 2, the reinforcement component 3, the first upstream stabilizing plate 301, the second upstream stabilizing plate 302, the first downstream stabilizing plate 303, the second downstream stabilizing plate 304, the shear wall 305, the limiting plate 306, the diversion component 4, the fixed frame 401, the drainage channel 402, the water passing port 403. Specific embodiments

[0022] The following further describes the embodiments of the present invention with reference to the accompanying drawings.

[0023] See Figures 1 - 3 , a combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam, including a gravity dam body 1 and a reinforcement component 3. A ground layer 2 is provided at the lower end of the gravity dam body 1. The reinforcement component 3 for anti-slip is arranged at the lower end of the gravity dam body 1 and is located within the ground layer 2. The reinforcement component 3 includes a first upstream stabilizing plate 301, a second upstream stabilizing plate 302, a first downstream stabilizing plate 303, a second downstream stabilizing plate 304, a shear wall 305, and a limiting plate 306. The first upstream stabilizing plate 301 and the second upstream stabilizing plate 302 are fixedly arranged on the upstream side of the bottom surface of the gravity dam body 1, and the second upstream stabilizing plate 302 is located on the downstream side of the first upstream stabilizing plate 301. The first downstream stabilizing plate 303 and the second downstream stabilizing plate 304 are fixedly arranged on the downstream side of the bottom surface of the gravity dam body 1, and the second downstream stabilizing plate 304 is located on the upstream side of the first downstream stabilizing plate 303. A shear wall 305 is fixedly installed in the middle of the bottom surface of the gravity dam body 1, and a limiting plate 306 is longitudinally fixedly installed on the side surface of the shear wall 305.

[0024] The tooth grooves formed by the first downstream stabilizing plate 303 and the second downstream stabilizing plate 304 can strengthen the stability between the downstream end (right end) of the gravity dam body 1 and the ground layer 2, thereby avoiding the situation of the gravity dam body 1 sliding and losing balance left and right. A shear wall 305 is fixedly installed in the middle of the bottom surface of the gravity dam body 1, and a limiting plate 306 is longitudinally fixedly installed on the side surface of the shear wall 305. The limiting plates 306 are equidistantly distributed, and the height of the limiting plate 306 is equal to the height of the shear wall 305, which can use multiple shear walls 305 to enhance the stability of the gravity dam body 1 in the front and back directions. At the same time, the limiting plate 306 can further increase the contact area between the reinforcement structure and the ground layer 2, thereby further enhancing the anti-slip performance of the gravity dam foundation.

[0025] Specifically, one end of the shear wall 305 is fixedly connected to the second upstream stabilizing plate 302, and the other end is fixedly connected to the second downstream stabilizing plate 304, enhancing the overall structural strength of the reinforcement component 3.

[0026] A diversion component 4 for reducing uplift pressure is arranged between the shear walls 305. The diversion component 4 includes a fixed frame 401, a drainage channel 402 and a water passing port 403. The limiting plates 306 are fixedly arranged on the shear walls 305 relatively and at intervals. A fixed frame 401 is arranged between the shear walls 305 without limiting plates 306. A drainage channel 402 is arranged inside the fixed frame 401, and water passing ports 403 are arranged at both the left and right ends of the fixed frame 401. Through the diversion component 4, the flow path of groundwater can be increased.

[0027] The fixed frames 401 are equidistantly distributed on the bottom surface of the gravity dam body 1 and are fixedly connected to the gravity dam body 1, so that the dam body is in force balance and construction is convenient.

[0028] The fixed frame 401 is in an L shape, and the drainage channels 402 are connected to each other through pipes between the fixed frames 401. Groundwater can enter the drainage channel 402 through the water passing port 403, so that the groundwater can flow inside the fixed frame 401, thereby providing a flow channel for the groundwater, reducing the uplift pressure generated by the groundwater, and further enhancing the anti-sliding stability of the gravity dam foundation.

[0029] The length of the fixed frame 401 is equal to the distance between the first upstream stabilizing plate 301 and the first downstream stabilizing plate 303. The tooth groove formed between the first upstream stabilizing plate 301 and the first downstream stabilizing plate 303 can be used to strengthen the connection strength between the gravity dam body 1 and the ground layer 2.

[0030] The fixed frame 401 is fitted and connected with the second upstream stabilizing plate 302 and the second downstream stabilizing plate 304. The fixed frame 401 is embedded and clamped between the second upstream stabilizing plate 302 and the second downstream stabilizing plate 304, and has good stability.

[0031] The depths of the first upstream stabilizing plate 301 and the second upstream stabilizing plate 302 are equal, the depths of the first downstream stabilizing plate 303 and the second downstream stabilizing plate 304 are equal, and the depth of the second upstream stabilizing plate 302 is greater than the depth of the second downstream stabilizing plate 304. Further, a stepped structure is formed between the first upstream stabilizing plate 301 and the second upstream stabilizing plate 302 and between the first downstream stabilizing plate 303 and the second downstream stabilizing plate 304, enhancing the anti-sliding performance of the gravity dam foundation.

[0032] The working process and principle of the present invention:

[0033] During use, according to Figures 1 - 3 the structure shown in, multiple groups of shear walls 305 are used to enhance the stability of the gravity dam body 1 in the front and rear directions. At the same time, the contact area between the reinforcement structure and the ground layer 2 is further increased through the limiting plates 306, thereby further enhancing the anti-sliding performance of the gravity dam foundation.

[0034] Then, the tooth grooves formed between the first upstream stabilizing plate 301 and the second upstream stabilizing plate 302 can also be utilized to strengthen the connection strength between the left end of the gravity dam body 1 and the ground layer 2. At the same time, the tooth grooves formed by the first downstream stabilizing plate 303 and the second downstream stabilizing plate 304 can also enhance the stability between the right end of the gravity dam body 1 and the ground layer 2, thereby avoiding the situation of the gravity dam body 1 sliding and losing balance left and right.

[0035] Finally, groundwater enters the drainage channel 402 through the water passing port 403, enabling the groundwater to flow within the fixed frame 401, thereby providing a flow channel for the groundwater, reducing the uplift pressure generated by the groundwater, and further enhancing the anti-sliding stability of the gravity dam foundation.

Claims

1. A combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam, comprising a gravity dam body (1) and a reinforcement component (3), characterized in that: The reinforcement component (3) is arranged at the lower end of the gravity dam body (1) and is located within the ground layer (2). The reinforcement component (3) includes a first upstream stabilizing plate (301), a second upstream stabilizing plate (302), a first downstream stabilizing plate (303), a second downstream stabilizing plate (304), a shear wall (305), and a limiting plate (306). The first upstream stabilizing plate (301) and the second upstream stabilizing plate (302) are fixedly arranged on the upstream side of the bottom surface of the gravity dam body (1), and the second upstream stabilizing plate (302) is located on the downstream side of the first upstream stabilizing plate (301). The first downstream stabilizing plate (303) and the second downstream stabilizing plate (304) are fixedly arranged on the downstream side of the bottom surface of the gravity dam body (1), and the second downstream stabilizing plate (304) is located on the upstream side of the first downstream stabilizing plate (303). A shear wall (305) is fixedly arranged in the middle of the bottom surface of the gravity dam body (1), and a limiting plate (306) is longitudinally fixedly arranged on the side surface of the shear wall (305); The limiting plates (306) are evenly distributed, and the height of the limiting plates (306) is equal to the height of the shear wall (305); One end of the shear wall (305) is fixedly connected to the second upstream stabilizing plate (302), and the other end is fixedly connected to the second downstream stabilizing plate (304).

2. The combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam according to claim 1, wherein A diversion component (4) for reducing the uplift pressure is arranged between the shear walls (305). The diversion component (4) includes a fixed frame (401), a drainage channel (402), and a water passing port (403). The limiting plates (306) are fixedly arranged on the shear walls (305) opposite to and at intervals. A fixed frame (401) is arranged between the shear walls (305) where the limiting plates (306) are not provided. A drainage channel (402) is arranged inside the fixed frame (401), and water passing ports (403) are arranged at both the left and right ends of the fixed frame (401).

3. The combined reinforcement structure for the foundation of a multi-weak interlayer gravity dam according to claim 2, characterized in that, The fixed frames (401) are evenly distributed on the bottom surface of the gravity dam body (1), and the fixed frames (401) are fixedly connected to the gravity dam body (1).

4. A combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam according to claim 2, characterized in that, The fixed frame (401) is in an L shape, and the drainage channels (402) are connected to each other through pipes between the fixed frames (401).

5. A combined reinforcement structure for the foundation of a multi-weak interlayer gravity dam according to claim 2, characterized in that, The length of the fixed frame (401) is equal to the distance between the first upstream stabilizing plate (301) and the first downstream stabilizing plate (303).

6. The combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam according to claim 2, characterized in that, The fixed frame (401) is in a fitting connection with the second upstream stabilizing plate (302) and the second downstream stabilizing plate (304).

7. A combined reinforcement structure for the foundation of a multi-soft interlayer gravity dam according to claim 1, characterized in that, The depths of the first upstream stabilizing plate (301) and the second upstream stabilizing plate (302) are equal, the depths of the first downstream stabilizing plate (303) and the second downstream stabilizing plate (304) are equal, and the depth of the second upstream stabilizing plate (302) is greater than the depth of the second downstream stabilizing plate (304).

Images