Roller compacted concrete dam with high inter-layer performance

Abstract

The utility model discloses a roller compacted concrete dam with high interlayer performance, which comprises a dam body, the dam body comprises roller compacted concrete layers and anti-seepage cementation layers, the roller compacted concrete layers and the anti-seepage cementation layers are sequentially and alternately stacked, the top surface of each roller compacted concrete layer and the bottom surface of each anti-seepage cementation layer are in a concave-convex fluctuating shape, and the top surface of each roller compacted concrete layer and the bottom surface of each anti-seepage cementation layer are in a concave-convex fluctuating shape. And the contact surfaces of the roller compacted concrete layer and the anti-seepage cementing layer are tightly attached. According to the utility model, the anti-seepage cementing layer is arranged on the interlayer bonding surface, so that the bonding performance and the anti-seepage performance of the upper roller compacted concrete layer and the lower roller compacted concrete layer are improved, and the interlayer anti-splitting strength and the overall anti-seepage performance of the dam body are improved.

Description

Technical Field

[0001] The utility model relates to a high-rise inter-performance roller compacted concrete dam, belonging to the technical field of water conservancy and hydropower. Background Art

[0002] Roller compacted concrete dam is a dam built with super-dry hard concrete. Compared with normal concrete dam, it has the advantages of simple construction process, less cement and formwork, less joints and blocks, convenient continuous construction, simple temperature control measures and short construction period.

[0003] In the prior art, roller compacted concrete dams are usually constructed by layered pouring. The performance of the layer, as the weak part of the dam, directly affects the impermeability and anti-sliding stability. Especially in windy, high temperature and dry environments, even continuous pouring will cause the problem of reduced bonding performance between concrete layers. The bonding performance of the interlayer bonding surface is reduced, which affects the overall splitting strength of the dam and the overall impermeability. Therefore, we propose a high-performance roller compacted concrete dam. Utility Model Content

[0004] The utility model aims to provide a high-performance roller compacted concrete dam with high interlayer performance. An anti-seepage bonding layer is arranged at the interlayer joint surface to improve the bonding performance and anti-seepage performance of the upper and lower roller compacted concrete layers, thereby improving the interlayer splitting strength and the overall anti-seepage performance of the dam body.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: a high-performance roller compacted concrete dam, including a dam body, the dam body including a roller compacted concrete layer and an anti-seepage bonding layer, the roller compacted concrete layer and the anti-seepage bonding layer are alternately stacked in sequence, the top surface of each layer of the roller compacted concrete layer and the bottom surface of each layer of the anti-seepage bonding layer are both concave and convex, and the contact surfaces of the roller compacted concrete layer and the anti-seepage bonding layer are tightly fitted.

[0006] The aforementioned high-rise performance roller compacted concrete dam is characterized in that the roller compacted concrete layer is 30 to 70 cm thick.

[0007] In the aforementioned high-rise inter-performance roller compacted concrete dam, the anti-seepage bonding layer is 2 to 5 cm thick.

[0008] The aforementioned high-rise performance roller compacted concrete dam has a base at the bottom of the dam body, and the base is placed below the ground level.

[0009] In the aforementioned high-rise performance roller-compacted concrete dam, the top surface of the base is provided with reinforcement columns, the reinforcement columns are evenly arranged along the length direction of the dam body, and the reinforcement columns are all arranged in the middle of the dam body, and reinforcing ribs are provided between adjacent reinforcement columns.

[0010] In the aforementioned high-rise inter-performance roller compacted concrete dam, at least one reinforcing rib is arranged in the middle of each roller compacted concrete layer.

[0011] In the aforementioned high-rise high-performance roller compacted concrete dam, the anti-seepage bonding layer is a two-component modified epoxy resin adhesive mixed with anti-seepage and waterproof materials.

[0012] In the aforementioned high-rise inter-performance roller compacted concrete dam, the top surface of the base is provided with a waterproof wall, and the waterproof wall is arranged on both sides of the lowest roller compacted concrete layer.

[0013] The aforementioned high-rise performance roller compacted concrete dam has a waterproof panel disposed on the water-facing surface of the dam body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The dam body of the utility model is composed of a roller compacted concrete layer and an anti-seepage adhesive layer connected at intervals, which improves the bonding performance of the interlayer bonding surface, thereby improving the splitting strength;

[0016] (2) The contact surface between the top surface of the roller compacted concrete layer and the bottom surface of the anti-seepage adhesive layer of the utility model presents a concave-convex shape, so as to increase the bonding area between the roller compacted concrete layer and the anti-seepage adhesive layer and improve the strength of the bonding interface.

[0017] (3) The utility model improves the anti-seepage performance of the interlayer bonding surface, fills the shortcomings of the weak link in the anti-seepage of the dam body, and improves the overall anti-seepage performance.

[0018] (4) The utility model can improve the overall earthquake resistance of the dam body and further improve the stability of the dam body by using reinforcing columns and reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is an enlarged schematic diagram of the layered structure of the utility model;

[0021] Figure 3 It is a top view of the connection structure of the reinforcing column and the reinforcing rib of the utility model.

[0022] Figure numerals: 1-dam body, 2-roller compacted concrete layer, 3-anti-seepage bonding layer, 4-base, 5-reinforcement column, 6-reinforcement rib, 7-waterproof wall, 8-waterproof panel.

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION

[0024] Embodiment 1 of the utility model: a high-performance roller compacted concrete dam, comprising a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an anti-seepage bonding layer 3, wherein the roller compacted concrete layer 2 and the anti-seepage bonding layer 3 are alternately stacked in sequence, and an anti-seepage bonding layer 3 is arranged at the interlayer bonding surface of the roller compacted concrete layer 2 of the dam body 1 to improve the bonding performance and anti-seepage performance between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall anti-seepage performance of the dam body 1, the top surface of each layer of the roller compacted concrete layer 2 and the bottom surface of each layer of the anti-seepage bonding layer 3 are both concave and convex, and the contact surface between the roller compacted concrete layer 2 and the anti-seepage bonding layer 3 is tightly fitted, and the roller compacted concrete layer 2 is rolled by a flat wheel vibrating roller and then rolled by a convex wheel vibrating roller before curing is completed, so that its surface presents a concave and convex shape, so as to increase the bonding area between the roller compacted concrete layer 2 and the anti-seepage bonding layer 3, and improve the stability and bonding strength of the bonding interface.

[0025] Embodiment 2 of the utility model: A high-performance roller compacted concrete dam, comprising a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an impermeable bonding layer 3, wherein the roller compacted concrete layer 2 and the impermeable bonding layer 3 are alternately stacked in sequence, and the dam body 1 is provided with an impermeable bonding layer 3 at the interlayer bonding surface of the roller compacted concrete layer 2, so as to improve the bonding performance and impermeability between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall impermeability of the dam body 1, wherein each roller compacted concrete layer 2 The top surface and the bottom surface of each layer of the anti-seepage bonding layer 3 are both uneven, and the contact surfaces of the rolled concrete layer 2 and the anti-seepage bonding layer 3 are tightly fitted. After the rolled concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before solidification is completed, so that its surface presents an uneven shape, so as to increase the bonding area between the rolled concrete layer 2 and the anti-seepage bonding layer 3, and improve the stability and bonding strength of the bonding interface; wherein, the rolled concrete layer 2 is 30 cm thick, and the anti-seepage bonding layer 3 is 2 cm thick.

[0026] Embodiment 3 of the utility model: A high-performance roller compacted concrete dam, comprising a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an impermeable bonding layer 3, wherein the roller compacted concrete layer 2 and the impermeable bonding layer 3 are alternately stacked in sequence, and the dam body 1 is provided with an impermeable bonding layer 3 at the interlayer bonding surface of the roller compacted concrete layer 2, so as to improve the bonding performance and impermeability between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall impermeability of the dam body 1, wherein each roller compacted concrete layer 2 The top surface and the bottom surface of each layer of the anti-seepage bonding layer 3 are both uneven, and the contact surfaces of the rolled concrete layer 2 and the anti-seepage bonding layer 3 are tightly fitted. After the rolled concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before solidification is completed, so that its surface presents an uneven shape, so as to increase the bonding area between the rolled concrete layer 2 and the anti-seepage bonding layer 3, and improve the stability and bonding strength of the bonding interface; wherein, the rolled concrete layer 2 is 70 cm thick, and the anti-seepage bonding layer 3 is 5 cm thick.

[0027] Embodiment 4 of the utility model: A high-performance roller compacted concrete dam, comprising a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an impermeable bonding layer 3, wherein the roller compacted concrete layer 2 and the impermeable bonding layer 3 are alternately stacked in sequence, and the dam body 1 is provided with an impermeable bonding layer 3 at the interlayer bonding surface of the roller compacted concrete layer 2, so as to improve the bonding performance and impermeability between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall impermeability of the dam body 1, wherein each roller compacted concrete layer 2 The top surface and the bottom surface of each layer of the anti-seepage bonding layer 3 are both uneven, and the contact surfaces of the rolled concrete layer 2 and the anti-seepage bonding layer 3 are tightly fitted. After the rolled concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before solidification is completed, so that its surface presents an uneven shape, so as to increase the bonding area between the rolled concrete layer 2 and the anti-seepage bonding layer 3, and improve the stability and bonding strength of the bonding interface; wherein, the rolled concrete layer 2 is 50 cm thick, and the anti-seepage bonding layer 3 is 3 cm thick.

[0028] Embodiment 5 of the utility model: A high-performance roller compacted concrete dam comprises a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an impermeable bonding layer 3, wherein the roller compacted concrete layer 2 and the impermeable bonding layer 3 are alternately stacked in sequence, and an impermeable bonding layer 3 is arranged at the interlayer bonding surface of the roller compacted concrete layer 2 of the dam body 1 to improve the bonding performance and impermeability between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall impermeability of the dam body 1, the top surface of each layer of the roller compacted concrete layer 2 and the bottom surface of each layer of the impermeable bonding layer 3 are both concave and convex, and the contact surface between the roller compacted concrete layer 2 and the impermeable bonding layer 3 is tightly fitted, and after the roller compacted concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before curing is completed, so that its surface presents a concave and convex shape, so as to increase the bonding area between the roller compacted concrete layer 2 and the impermeable bonding layer 3, and improve the stability and bonding strength of the bonding interface.

[0029] A base 4 is provided at the bottom of the dam body 1. The base 4 is made of concrete and is placed below the ground level to improve the overall stability of the dam body 1. A reinforcement column 5 is provided on the top surface of the base 4. The reinforcement columns 5 are evenly arranged along the length direction of the dam body 1, and the reinforcement columns 5 are all arranged in the middle of the dam body 1. The reinforcement columns 5 can be made of reinforced concrete. Reinforcement ribs 6 are provided between adjacent reinforcement columns 5. The reinforcement ribs 6 can be made of steel bars. At least one reinforcement rib 6 is provided in the middle of each layer of the rolled concrete layer 2. The reinforcement columns 5 and the reinforcement ribs 6 increase the overall stability of the dam body 1 and improve the earthquake resistance.

[0030] Embodiment 5 of the utility model: A high-performance roller compacted concrete dam comprises a dam body 1, wherein the dam body 1 comprises a roller compacted concrete layer 2 and an impermeable bonding layer 3, wherein the roller compacted concrete layer 2 and the impermeable bonding layer 3 are alternately stacked in sequence, and an impermeable bonding layer 3 is arranged at the interlayer bonding surface of the roller compacted concrete layer 2 of the dam body 1 to improve the bonding performance and impermeability between the upper and lower roller compacted concrete layers 2, thereby improving the interlayer splitting strength and the overall impermeability of the dam body 1, the top surface of each layer of the roller compacted concrete layer 2 and the bottom surface of each layer of the impermeable bonding layer 3 are both concave and convex, and the contact surface between the roller compacted concrete layer 2 and the impermeable bonding layer 3 is tightly fitted, and after the roller compacted concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before curing is completed, so that its surface presents a concave and convex shape, so as to increase the bonding area between the roller compacted concrete layer 2 and the impermeable bonding layer 3, and improve the stability and bonding strength of the bonding interface.

[0031] A base 4 is provided at the bottom of the dam body 1. The base 4 is made of concrete and is placed below the ground level to improve the overall stability of the dam body 1. A reinforcement column 5 is provided on the top surface of the base 4. The reinforcement columns 5 are evenly arranged along the length direction of the dam body 1, and the reinforcement columns 5 are all arranged in the middle of the dam body 1. The reinforcement columns 5 can be made of reinforced concrete. Reinforcement ribs 6 are provided between adjacent reinforcement columns 5. The reinforcement ribs 6 can be made of steel bars. At least one reinforcement rib 6 is provided in the middle of each layer of the rolled concrete layer 2. The reinforcement columns 5 and the reinforcement ribs 6 increase the overall stability of the dam body 1 and improve the earthquake resistance.

[0032] Specifically, the anti-seepage bonding layer 3 is a two-component modified epoxy resin adhesive mixed with anti-seepage waterproof material.

[0033] Specifically, a waterproof wall 7 is provided on the top surface of the base 4, and the waterproof wall is provided on both sides of the bottom roller compacted concrete layer 2 to increase the compressive strength of the bottom roller compacted concrete layer 2 and improve the bottom anti-seepage ability.

[0034] Specifically, a waterproof panel 8 is provided on the water-facing surface of the dam body 1 to improve the anti-seepage ability of the water-facing surface of the dam body 1 .

[0035] The working principle of an embodiment of the utility model is as follows: when the utility model is being constructed, the rolled concrete layer 2 is first laid, and after being rolled by a flat wheel vibrating roller, it can be layered and compacted by a vibrating roller. The vibrating roller has three types: a flat wheel, a sheep's foot wheel, and a convex wheel. After the rolled concrete layer 2 is rolled by a flat wheel vibrating roller, it is rolled by a convex wheel vibrating roller before solidification is completed, so that its surface presents a concave-convex shape, so as to increase the bonding area with the bonding surface and improve the bonding strength of the bonding interface; the anti-seepage bonding layer 3 adopts a two-component modified epoxy resin adhesive, and is mixed with an anti-seepage and waterproof The material is evenly sprayed and applied on the rolled concrete layer 2. Before the adhesive of the anti-seepage bonding layer 3 is completely cured, another layer of rolled concrete layer 2 is spread. The layers are laid alternately in sequence to complete the structure of the dam body 1. The base 4 is cast with concrete, and the reinforcement column 5 can be cast with reinforced concrete. When laying the rolled concrete layer 2 and the anti-seepage bonding layer 3, the reinforcement columns 5 and the reinforcing ribs 6 can be gradually cast and pre-buried as each layer of the rolled concrete layer 2 is laid. The reinforcement columns 5 and the reinforcing ribs 6 increase the overall stability of the dam body 1 and improve its earthquake resistance.

Claims

1. A high-rise performance roller compacted concrete dam, comprising a dam body (1), characterized in that: The dam body (1) comprises a roller compacted concrete layer (2) and an anti-seepage bonding layer (3), wherein the roller compacted concrete layer (2) and the anti-seepage bonding layer (3) are alternately stacked in sequence, the top surface of each roller compacted concrete layer (2) and the bottom surface of each anti-seepage bonding layer (3) are both concave and convex, and the contact surfaces of the roller compacted concrete layer (2) and the anti-seepage bonding layer (3) are tightly fitted.

2. The high-rise performance roller compacted concrete dam according to claim 1, characterized in that: The roller compacted concrete layer (2) has a thickness of 30 to 70 cm.

3. The high-rise performance roller compacted concrete dam according to claim 1, characterized in that: The anti-seepage adhesive layer (3) has a thickness of 2 to 5 cm.

4. The high-rise performance roller compacted concrete dam according to claim 1, characterized in that: A base (4) is provided at the bottom of the dam body (1), and the base (4) is placed below the ground level.

5. The high-rise performance RCC dam according to claim 4, characterized in that: The top surface of the base (4) is provided with reinforcement columns (5), the reinforcement columns (5) are evenly arranged along the length direction of the dam body (1), and the reinforcement columns (5) are all arranged in the middle of the dam body (1), and reinforcing ribs (6) are arranged between adjacent reinforcement columns (5).

6. The high-rise performance RCC dam according to claim 5, characterized in that: At least one reinforcing rib (6) is arranged in the middle of each roller compacted concrete layer (2).

7. The high-rise performance RCC dam according to claim 1, characterized in that: The anti-seepage adhesive layer (3) is a two-component modified epoxy resin adhesive mixed with an anti-seepage waterproof material.

8. A high-rise performance RCC dam according to claim 4 or 6, characterized in that: The top surface of the base (4) is provided with a waterproof wall (7), and the waterproof wall is arranged on both sides of the bottom roller compacted concrete layer (2).

9. The high-rise performance RCC dam according to claim 1, characterized in that: The water-facing surface of the dam body (1) is provided with a waterproof panel (8).

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