Face plate anti-seismic structure of concrete face rock-fill dam

Abstract

The embodiment of the invention provides a panel anti-seismic structure of a concrete panel rock-fill dam, and relates to the technical field of rock-fill dam panels. The panel anti-seismic structure of the concrete panel rockfill dam comprises a rockfill body, the rockfill body is located on a dam main body part and is composed of multiple layers of rockfill, and flexible connecting layers are arranged between rockfill layers of the rockfill body; the concrete face plate is laid on the surface of the upstream side of the rock-fill body, steel bar structures which are arranged in a staggered mode are embedded in the concrete face plate, a reinforcing net is arranged in a gap formed between every two adjacent steel bars, and the reinforcing nets are formed by weaving high-strength steel wires; a transition layer is arranged between the concrete panel and the rock-fill body and is made of a high-elastic-modulus material. By arranging the flexible connecting layer, the reinforcing net, the waterproof layer, the transition layer, the expansion joint sealing structure, the foundation reinforcing area, the drainage system, the anti-slip strips and other multi-layer cooperative structures, the anti-seismic performance and the overall stability of the concrete face rockfill dam under the complex working conditions are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rockfill dam panels, in particular to a panel anti-seismic structure of a concrete face rockfill dam. BACKGROUND

[0002] Concrete face rockfill dams have been widely used in water conservancy projects due to their structural stability, short construction period, and relatively low cost. This type of dam is typically composed of a rockfill body and a concrete face panel, with the rockfill body serving as the main support structure and the concrete face panel assuming the functions of seepage prevention and partial load bearing. However, despite the excellent performance of concrete face rockfill dams under normal conditions, their seismic performance still faces many challenges in regions with frequent earthquakes or complex geological conditions.

[0003] Traditional rockfill dams mostly adopt a monolithic rockfill structure, which is constructed by layering and compacting rockfill materials. However, this structure has a significant disadvantage: the lack of effective flexible connection measures between layers, which can lead to uneven settlement and interlayer movement under seismic action. This not only causes local deformation of the dam body but also may cause a decrease in the overall structural stability. Due to the lack of appropriate deformation coordination mechanisms, the rockfill body cannot effectively absorb energy when facing dynamic loads, thereby increasing the risk of structural damage.

[0004] At the same time, the concrete face panel, as an important component of the dam, also faces a series of problems. The concrete face panel usually has steel bars embedded inside to enhance its load-bearing capacity. However, traditional steel bar arrangements are often simple and do not fully consider the stress distribution under complex loading conditions. In addition, the concrete face panel often lacks reinforcing structures, which can easily lead to cracks under external forces, severely affecting the durability and safety of the dam. Once the concrete face panel cracks, not only does it reduce its seepage prevention performance, but it also accelerates the aging process of the concrete, further shortening the service life of the dam.

[0005] In addition to the above problems, the connection between the traditional panel and the rockfill body is relatively simple and lacks comprehensive protection design. For example, the design of functional structures such as waterproofing and cushioning is insufficient, making the dam vulnerable to seepage erosion during long-term operation. The lack of effective waterproof layer design can cause water to penetrate into the rockfill body, causing corrosion and damage to the internal structure of the dam. The lack of a cushion layer cannot effectively alleviate the stress transfer between the panel and the rockfill body, increasing the risk of structural damage.

[0006] In summary, the existing concrete face rockfill dam in the prior art still has many shortcomings in terms of seismic performance, structural stability, waterproof isolation, foundation reinforcement, etc. SUMMARY

[0007] The present application aims to at least solve the technical problems of the deficiencies of the concrete face rockfill dam in the prior art in aspects of seismic performance, structural stability, waterproof isolation, temperature adaptability, foundation reinforcement, and drainage system. To this end, the present application provides a face panel seismic structure of a concrete face rockfill dam.

[0008] According to the face panel seismic structure of the concrete face rockfill dam, the face panel seismic structure comprises:

[0009] The rockfill body is located in the main body part of the dam, is composed of multiple layers of rockfills, and is provided with a flexible connecting layer between the rockfill layers of the rockfill body;

[0010] The concrete face panel is laid on the upstream side surface of the rockfill body, and a steel bar structure arranged in a staggered manner is pre-buried in the concrete face panel. A reinforcing mesh is arranged in the gap formed between adjacent steel bars, and the reinforcing mesh is formed by weaving high-strength steel wires.

[0011] A transition layer is arranged between the concrete face panel and the rockfill body, and the transition layer is made of a high-elasticity modulus material;

[0012] The bottom of the rockfill body is provided with a foundation reinforcement area, and the foundation reinforcement area is reinforced by grouting technology.

[0013] Further, the flexible connecting layer is composed of multiple layers of rubber gaskets and metal nets which are alternately stacked, wherein the rubber gaskets are selected from high-damping rubber materials, and the metal nets are embedded between the rubber gaskets and tightly attached thereto.

[0014] Further, the reinforcing mesh is arranged in the space between the steel bars in a bidirectional staggered manner to form a regular grid structure, and a reinforcing node is arranged at each grid intersection, and the reinforcing node is fixed on the reinforcing mesh by welding.

[0015] Further, a plurality of anti-skid strips are arranged on the contact surface at the bottom of the rockfill body, the anti-skid strips are made of wear-resistant rubber materials, and are embedded and arranged transversely along the bottom surface of the rockfill body.

[0016] Further, a plurality of anchor rods are installed in the foundation reinforcement area, the anchor rods are uniformly distributed along the bottom of the rockfill body, one end of each anchor rod is fixed in the foundation reinforcement area, and the other end of each anchor rod extends and is anchored in the underground rock stratum.

[0017] Further, expansion joints are arranged between the left and right side edges of the concrete face panel and the rockfill body, the expansion joints continuously extend along the height direction of the concrete face panel, and an elastic sealing material is filled in the expansion joints, the elastic sealing material covers the entire joint gap and is tightly bonded with the concrete face panel and the rockfill body.

[0018] Further, a plurality of drainage holes are arranged in the vertical direction inside the rockfill body, the drainage holes penetrate the rockfill body in the up-down direction and communicate with the drainage system outside the dam body, and are used for draining the water seeping into the rockfill body.

[0019] Further, the water inlet end of each drainage hole is provided with a filter plate, the filter plate is a porous structure, is installed at the inlet position of the drainage hole, and is connected with the drainage hole by a bolt fixing mode.

[0020] Further, a waterproof layer is arranged between the rockfill body and the concrete panel, the waterproof layer is made of a high polymer material, and the waterproof layer is located on the lower side of the transition layer.

[0021] Further, a protective film layer is arranged outside the waterproof layer, the protective film layer covers the surface of the waterproof layer, prevents mechanical damage to the waterproof layer during construction, and the protective film layer is made of a degradable environment-friendly material.

[0022] The beneficial effects of the present application are: by arranging the flexible connection layer inside the rockfill body, the deformation coordination ability and energy dissipation ability between the rockfill layers are enhanced, by arranging the reinforcing mesh and the reinforcing node in the concrete panel, the overall strength and crack resistance of the panel are improved, at the same time, by sequentially arranging the waterproof layer and the transition layer between the concrete panel and the rockfill body, the water seepage is effectively isolated and the stress buffering is realized, the structural durability is improved, in addition, the elastic sealing material is filled in the expansion joint, so that the structure has good temperature adaptability and sealing performance, the anchor rod and the grouting process are combined in the foundation reinforcement area, so that the foundation stability is enhanced, the drainage hole cooperates with the filter plate to form a complete drainage system, so that the internal seepage pressure of the dam body is reduced, the bottom anti-skid strip is arranged to further improve the frictional resistance between the rockfill body and the foundation, so as to prevent sliding instability, the overall structure has clear levels and complementary functions, and has good anti-seismic performance and engineering application value.

[0023] Additional aspects and advantages of the application will be set forth in part in the following description, will become apparent to those skilled in the art from the following description, or will be learned from practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 is a schematic diagram of the overall structure according to the embodiments of the present application;

[0026] Figure 2is a schematic diagram of the overall structure according to an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of the overall structure according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the expansion joint structure according to an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the flexible connection layer structure according to an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of the rubber gasket and metal mesh structure according to an embodiment of the present application;

[0031] Figure 7 is a schematic diagram of the reinforcing mesh structure according to an embodiment of the present application;

[0032] Figure 8 is a schematic diagram of the drainage channel structure according to an embodiment of the present application;

[0033] Figure 9 is a schematic diagram of the rockfill structure according to an embodiment of the present application;

[0034] Figure 10 is a schematic diagram of the anti-skid strip structure according to an embodiment of the present application.

[0035] Icon: 1, rockfill; 11, drainage channel; 12, flexible connection layer; 13, rubber gasket; 14, metal mesh; 15, filter plate; 2, waterproof layer; 3, transition layer; 4, concrete panel; 41, expansion joint; 5, steel bar; 51, reinforcing mesh; 52, reinforcing node; 6, elastic sealing material; 7, anti-skid strip; 8, foundation reinforcement area; 9, anchor rod. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0037] A concrete panel seismic structure of a concrete panel rockfill dam according to an embodiment of the present application is described below with reference to the drawings.

[0038] As shown in the drawings, Figures 1-10 A concrete panel seismic structure of a concrete panel rockfill dam according to an embodiment of the present application includes:

[0039] A rockfill 1 is arranged in the main body part of the dam, and the rockfill 1 is formed by laying multiple layers of rockfill one by one. In order to enhance the deformation coordination ability and energy dissipation ability between the rockfill layers, a flexible connection layer 12 is arranged between every two layers of rockfill.

[0040] As shown in the drawings, Figure 6As shown, the flexible connection layer 12 is composed of multiple layers of rubber pads 13 and metal nets 14 arranged alternately, specifically, the rubber pads 13 are made of high-damping rubber material, which can effectively absorb vibration energy and reduce the impact of earthquakes or other dynamic loads on the rockfill body 1, and the metal nets 14 are embedded between the rubber pads 13 and tightly attached thereto, which not only enhances the overall strength and stability of the flexible connection layer 12, but also improves its tear resistance and ensures the structural integrity during long-term use.

[0041] Through this design, the flexible connection layer 12 can provide effective deformation coordination and energy dissipation between the rockfill layers, significantly improving the seismic performance and overall stability of the entire rockfill body 1.

[0042] On the upstream side surface of the rockfill body 1, a concrete panel 4 is laid, and inside the concrete panel 4, a steel reinforcement 5 is embedded in a staggered arrangement, forming a steel reinforcement framework structure, and in the gap area formed between adjacent steel reinforcements 5, a reinforcing mesh 51 is arranged, which is woven from high-strength steel wires and has good tensile properties.

[0043] As shown in Figure 7 The reinforcing mesh 51 is arranged in a two-way staggered manner in the space between the steel reinforcements 5, forming a regular grid structure as a whole, and each grid intersection point is provided with a reinforcing node 52 and is firmly connected by welding, thereby effectively improving the overall strength and crack resistance of the concrete panel 4 and enhancing its structural stability under complex stress conditions.

[0044] Between the concrete panel 4 and the rockfill body 1, a transition layer 3 and a waterproof layer 2 are arranged in sequence along the contact surface, wherein the transition layer 3 is made of high-elastic modulus material and is used to buffer the stress transmission between the concrete panel 4 and the rockfill body 1, reducing structural damage caused by deformation incoordination.

[0045] The waterproof layer 2 is located below the transition layer 3, i.e. close to the rockfill body 1, and is made of high-molecular polymer material, which has excellent impermeability and can effectively isolate external water seepage, preventing water from penetrating into the rockfill body 1, thereby improving the durability and safety of the entire structure.

[0046] To avoid mechanical damage to the waterproof layer 2 during construction, a protective film layer is covered on the outer side (facing the rockfill body 1 side) of the waterproof layer 2, which is made of degradable environmentally friendly materials and plays a physical protection role during the construction stage. After the structure is put into use, it can gradually degrade in the natural environment without affecting the overall function.

[0047] As shown in Figure 4As shown, a expansion joint 41 is arranged between the left and right side edges of the concrete panel 4 and the rockfill body 1, the expansion joint 41 continuously extends along the height direction of the concrete panel 4, penetrates the contact interface between the concrete panel 4 and the rockfill body 1, and the expansion joint 41 is filled with an elastic sealing material 6, which completely covers the joint area and is tightly bonded to the surfaces of the concrete panel 4 and the rockfill body 1, thereby forming a good sealing effect.

[0048] The structure of the expansion joint 41 can effectively adapt to the structural deformation caused by temperature changes, seismic action or foundation settlement, so that the concrete panel 4 and the rockfill body 1 have good displacement coordination ability and sealing performance, thereby improving the stability and durability of the overall structure.

[0049] Inside the rockfill body 1, a plurality of drainage channels 11 are arranged at intervals in the vertical direction, the drainage channels 11 penetrate the height direction of the rockfill body 1 and are connected to the drainage system outside the dam body, for timely draining water seeping into the rockfill body 1, reducing the seepage pressure inside the dam body and preventing structural damage caused by accumulated water.

[0050] To prevent debris such as sand and gravel from entering the drainage channels 11 and causing blockage, a filter plate 15 is arranged at the water inlet end of each drainage channel 11, the filter plate 15 is designed with a porous structure and has good water permeability and impurity interception ability. The filter plate 15 is installed at the inlet position of the drainage channel 11 by bolt fixation, which is convenient for later maintenance and replacement, ensures the long-term stable operation of the drainage system and prevents debris from entering the drainage system and causing blockage.

[0051] A plurality of anti-skid strips 7 are arranged on the contact surface between the bottom of the rockfill body 1 and the foundation reinforcement area 8, the anti-skid strips 7 are made of wear-resistant rubber material and are embedded transversely on the bottom surface of the rockfill body 1, and part of them protrude from the bottom surface to increase the contact friction between the rockfill body 1 and the foundation. This design effectively increases the frictional resistance between the rockfill body 1 and the foundation reinforcement area 8, prevents sliding instability under the action of earthquake or water pressure, and enhances the safety of the overall structure.

[0052] As shown in the drawings, Figure 2 A foundation reinforcement area 8 is also arranged at the bottom of the rockfill body 1, the foundation reinforcement area 8 is reinforced by grouting technology to improve the bearing capacity and overall stability of the foundation, and a plurality of anchor rods 9 are installed in the foundation reinforcement area 8 to further enhance the anchoring performance of the foundation, the anchor rods 9 are evenly distributed along the bottom of the rockfill body 1, one end of each anchor rod 9 is fixed in the foundation reinforcement area 8, and the other end extends and is anchored in the underground rock stratum, forming a reliable structural anchoring system, thereby significantly improving the stability and seismic resistance of the dam foundation.

[0053] In summary, the dam main part is layered with rockfill 1, and after each layer of rockfill is compacted, the upper layer is constructed. A flexible connecting layer 12 is arranged between each two layers of rockfill. A concrete panel 4 is formed on the upstream side surface of the rockfill 1, and the steel bars 5 are embedded in the concrete panel 4 in a staggered arrangement. The reinforcing mesh 51 is arranged in a two-way staggered arrangement in the gaps between the steel bar frameworks, and the reinforcing nodes 52 are welded at the mesh intersections to improve the overall strength and crack resistance. The transition layer 3 and the waterproof layer 2 are sequentially arranged between the contact surface of the concrete panel 4 and the rockfill 1. The expansion joints 41 are reserved between the two side edges of the concrete panel 4 and the rockfill 1, and the expansion joints 41 extend continuously along the height direction of the concrete panel 4. The expansion joints 41 are filled with elastic sealing material 6, and are tightly bonded with the concrete panel 4 and the rockfill 1 to ensure the sealing property and temperature adaptability. A plurality of drainage holes 11 are arranged in the rockfill 1 in the vertical direction, and extend through the rockfill 1. The drainage holes 11 are connected with the drainage system outside the dam body. The filter plate 15 is installed at the water inlet end of each drainage hole 11, and the filter plate 15 has a porous structure and is fixed to the drainage hole inlet by bolts to prevent debris from blocking. A plurality of anti-skid strips 7 are embedded in the contact surface between the rockfill 1 bottom and the foundation. The foundation reinforcement area 8 is arranged in the foundation area of the rockfill 1 bottom, and the foundation is reinforced by grouting technology to improve the bearing capacity. A plurality of anchor rods 9 are uniformly arranged in the foundation reinforcement area 8, and one end of the anchor rod 9 is fixed to the foundation reinforcement area 8, and the other end penetrates into the underground rock stratum to form a structural anchoring system.

[0054] The above merely provides an embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0055] The above merely provides an embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. The above merely provides an embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A concrete face rockfill dam face seismic structure, characterized by: include: A rockfill body (1), the rockfill body (1) being located in the main part of the dam and being composed of multiple layers of rockfill, and having flexible connection layers (12) arranged between the rockfill layers of the rockfill body (1); A concrete panel (4) is laid on the upstream side surface of the rockfill body (1), a staggered steel bar (5) structure is embedded in the concrete panel (4), and a reinforcing mesh (51) is provided in the gaps formed between adjacent steel bars (5), and the reinforcing mesh (51) is formed by weaving high-strength steel wire; A transition layer (3) is provided between the concrete panel (4) and the rockfill body (1), and the transition layer (3) is made of a material with a high elastic modulus; A foundation reinforcement area (8) is provided at the bottom of the rockfill body (1), and the foundation reinforcement area (8) is reinforced by grouting technology.

2. The concrete face rockfill dam face seismic resistant structure according to claim 1, characterized in that: The flexible connection layer (12) is composed of multiple layers of rubber gaskets (13) and metal meshes (14) stacked alternately, wherein the rubber gaskets (13) are made of high-damping rubber material, and the metal meshes (14) are embedded between the rubber gaskets (13) and fit closely therewith.

3. The concrete face rockfill dam face seismic resistant structure according to claim 1, characterized in that: The reinforcing mesh (51) is arranged in a bidirectional staggered manner in the space between the steel bars (5) to form a regular grid structure. A reinforcing node (52) is provided at each grid intersection, and the reinforcing node (52) is fixed to the reinforcing mesh (51) by welding.

4. The concrete face rockfill dam face seismic resistant structure according to claim 3, characterized in that: A plurality of anti-slip strips (7) are provided on the contact surface at the bottom of the rockfill body (1). The anti-slip strips (7) are made of wear-resistant rubber material and are laterally embedded along the bottom surface of the rockfill body (1).

5. The face plate seismic resistant structure of the concrete face rockfill dam according to claim 1, characterized in that: The foundation reinforcement area (8) is equipped with a plurality of anchor rods (9), which are evenly distributed along the bottom of the rockfill body (1), with one end fixed in the foundation reinforcement area (8) and the other end extending and anchored in the underground rock layer.

6. The concrete face rockfill dam face seismic resistant structure according to claim 1, characterized in that: An expansion joint (41) is provided between the left and right edges of the concrete panel (4) and the rockfill body (1). The expansion joint (41) extends continuously along the height direction of the concrete panel (4). The expansion joint (41) is filled with an elastic sealing material (6). The elastic sealing material (6) covers the entire joint opening and is tightly bonded to the concrete panel (4) and the rockfill body (1).

7. The face plate seismic resistant structure of the concrete face rockfill dam according to claim 6, characterized in that: A plurality of drainage channels (11) are arranged at intervals along the vertical direction inside the rockfill body (1). The drainage channels (11) penetrate the rockfill body (1) in the vertical direction and are connected to the external drainage system of the dam body for draining water that has seeped into the rockfill body (1).

8. The concrete face rockfill dam face seismic resistant structure according to claim 7, characterized in that: A filter plate (15) is provided at the water inlet end of each drainage channel (11). The filter plate (15) is a porous structure, installed at the inlet position of the drainage channel (11), and connected to the drainage channel (11) by bolt fixing.

9. The face plate seismic resistant structure of the concrete face rockfill dam according to claim 8, characterized in that: A waterproof layer (2) is provided between the rockfill body (1) and the concrete panel (4); the waterproof layer (2) is made of a high molecular polymer material, and the waterproof layer (2) is located on the lower side of the transition layer (3).

10. The face plate seismic resistant structure of the concrete face rockfill dam according to claim 9, characterized in that: A protective film layer is provided on the outside of the waterproof layer (2), and the protective film layer covers the surface of the waterproof layer (2) to prevent mechanical damage to the waterproof layer (2) during construction. The protective film layer is made of degradable and environmentally friendly materials.

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