Hydropower station workshop capable of inhibiting extension of structural joints, construction method of hydropower station workshop and hydropower station

Abstract

The invention provides a hydropower station plant capable of restraining extension of structural joints, a construction method of the hydropower station plant and a hydropower station, and relates to the technical field of hydropower stations. The lower portion of the hydropower station plant capable of restraining extension of the structural joints is a first part which is integrally arranged, and the upper portion of the hydropower station plant capable of restraining extension of the structural joints is a plurality of second parts which are arranged in a split mode; the foundation structure of the hydropower station workshop capable of restraining the extension of the structural joint is provided with the multiple second parts and the buffer connecting parts between the two adjacent second parts, so that the foundation structure of the hydropower station workshop capable of restraining the extension of the structural joint has good integrity and bearing capacity, meanwhile, the multiple second parts arranged in a split mode can effectively release stress and vibration loads, and the buffer connecting parts can further absorb the stress. The extension of the gap between the two adjacent second parts is avoided, so that the structural stability and durability of the hydropower house capable of inhibiting the extension of the structural gap under complex working conditions are remarkably improved, and the service life of the hydropower house capable of inhibiting the extension of the structural gap is prolonged.

Description

Technical Field

[0001] This invention relates to the field of hydropower station technology, and more specifically, to a hydropower station powerhouse that can suppress the extension of structural joints, its construction method, and a hydropower station. Background Technology

[0002] As the scale of hydropower station construction continues to expand, the stability requirements of hydropower station powerhouse structures that can suppress the extension of structural joints under complex geological conditions and water flow pressure are becoming increasingly stringent.

[0003] In related technologies, the main structure of hydropower station powerhouses that can suppress the extension of structural joints often adopts completely segmented independent units, with structural joints between adjacent independent units. Under the influence of factors such as temperature changes and vibration, stress concentration is easily generated, leading to the extension of structural joints, affecting the durability and safety of the structure, and restricting the long-term reliability of the hydropower station. Therefore, how to improve the overall strength and load-bearing capacity of hydropower station powerhouses that can suppress the extension of structural joints has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The problem addressed by this invention is: how to improve the overall strength and load-bearing capacity of a hydropower plant that can suppress the extension of structural joints.

[0005] To address the aforementioned problems, this invention provides a hydropower plant that can suppress the extension of structural joints, its construction method, and a hydropower station.

[0006] In a first aspect, embodiments of the present invention provide a hydropower station powerhouse capable of suppressing the extension of structural joints, comprising a first part and a plurality of second parts disposed on the first part and spaced apart along a first direction; wherein: The first part includes a first concrete body and a plurality of first units disposed within the first concrete body, with adjacent first units connected by concrete in the first concrete body; The second part is located on top of the first part, and a buffer connection is provided between the plurality of second parts. The buffer connection extends along a second direction, and the first direction is perpendicular to the second direction.

[0007] Optionally, the buffer connection includes two first connection portions respectively disposed on adjacent sidewalls of two adjacent second portions and a second connection portion connecting the bottom ends of the two first connection portions; wherein the bottom end of the second connection portion is attached to the top of the first portion.

[0008] Optionally, the buffer connection portion further includes multiple first anchor bars, which are disposed on the outer side wall of the first connection portion and inserted into the second portion.

[0009] Optionally, for the same first connection portion, multiple first anchor bars are arranged along the second direction to form a first bar group, and multiple first bar groups are arranged along the vertical direction; wherein, in the vertical direction, multiple first anchor bars of two adjacent first bar groups are staggered.

[0010] Optionally, the first anchor bar includes two first reinforcing bars perpendicular to the first connecting portion and a second reinforcing bar connecting the two first reinforcing bars, wherein the first reinforcing bars are connected to the first connecting portion through the second reinforcing bar.

[0011] Optionally, the buffer connection portion further includes multiple second anchor bars, which are disposed on the outer wall of the second connection portion and inserted into the first portion.

[0012] Optionally, the first part is further provided with a steel mesh, and a plurality of second anchor bars pass through the steel mesh and are connected to the steel mesh.

[0013] Optionally, the buffer connection portion further includes a sealant portion, which is disposed between two adjacent first connection portions and connected to the second connection portion.

[0014] Optionally, the inner sidewall of the bottom of the second part is arc-shaped, and in the direction from the first part to the top of the second part, the distance between adjacent sidewalls of two adjacent second parts first increases, then decreases, and then remains constant.

[0015] Secondly, embodiments of the present invention also provide a construction method for a hydropower station powerhouse that can suppress the extension of structural joints, comprising: Concrete is poured on the first reference surface to form the bottom of the first part; A plurality of buffer connecting parts are provided above the bottom of the first part and spaced apart along a first direction. The buffer connecting parts are spaced apart from the bottom of the first part. Each buffer connecting part includes two first connecting parts, a second connecting part connecting the bottom ends of the two first connecting parts, and a filler part provided between two adjacent first connecting parts. Concrete is poured above the bottom of the first part and on both sides of the first connecting part so that the concrete pouring stop surface is higher than the bottom surface of the buffer connecting part, so that the top of the first part and the bottom of a plurality of spaced second parts are formed above the bottom of the first part, so that the top of the first part and the bottom of the second part are integrally formed.

[0016] Thirdly, embodiments of the present invention also provide a hydropower station, including a hydropower station building as described above that can suppress the extension of structural joints.

[0017] The beneficial effects of this invention are as follows: by making the lower part of the hydropower plant that can suppress the extension of structural joints an integral first part, and the upper part of the hydropower plant that can suppress the extension of structural joints a plurality of separate second parts, and setting a buffer connection between adjacent two second parts, and setting a plurality of first units in the integral first part, the foundation structure of the hydropower plant that can suppress the extension of structural joints has good integrity and load-bearing capacity. At the same time, the multiple separate second parts can effectively release stress and vibration loads, and the buffer connection can further absorb stress and prevent the gap between adjacent two second parts from extending, thereby significantly improving the structural stability and durability of the hydropower plant that can suppress the extension of structural joints under complex working conditions, and extending the service life of the hydropower plant that can suppress the extension of structural joints. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a hydropower station powerhouse that can suppress the extension of structural joints in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first structure of the buffer connection part of the hydropower station building that can suppress the extension of structural joints in an embodiment of the present invention. Figure 3 This is a schematic diagram of a second structure of the buffer connection part of a hydropower station building that can suppress the extension of structural joints in an embodiment of the present invention. Figure 4 This is a schematic diagram of a third structure of the buffer connection part of a hydropower station building that can suppress the extension of structural joints in an embodiment of the present invention. Figure 5 This is a comparison diagram of bending moment simulation between a hydropower station powerhouse with a structure that can suppress the extension of structural joints and a traditional structure, as shown in the embodiment of the present invention. Figure 6 This is a schematic flowchart of a construction method for a hydropower plant that can suppress the extension of structural joints in an embodiment of the present invention. Figures 7A to 7C This is a structural schematic diagram of a construction method for a hydropower plant that can suppress the extension of structural joints, as described in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: Hydropower station powerhouse 10 capable of suppressing structural joint extension; first reference plane 11; first part 20; bottom of the first part 201; top of the first part 202; first concrete main body 21; first generating unit 22; steel mesh 23; second part 30; bottom of the second part 301; second concrete main body 31; functional structure 32; buffer connection part 40; first connection part 41; second connection part 42; first anchor bar 43; first reinforcement group 44; first steel bar 45; second steel bar 46; second anchor bar 47; joint filling part 48; second reinforcement group 49. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] In the attached diagram, the plane containing the X and Y axes represents a horizontal plane, and any direction on the horizontal plane is considered a horizontal direction. The Z axis represents the vertical direction, i.e., up and down position, with the positive direction of the Z axis representing up and the negative direction representing down. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0022] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0023] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] To address the problems existing in the aforementioned related technologies, embodiments of the present invention provide a hydropower plant that can suppress the extension of structural joints, a construction method thereof, and a hydropower station.

[0025] Combination Figures 1 to 4As shown, a hydropower plant building 10 capable of suppressing the extension of structural joints according to an embodiment of the present invention includes a first part 20 and a plurality of second parts 30 disposed on the first part 20 and spaced apart along a first direction; wherein: the first part 20 includes a first concrete body 21 and a plurality of first generating units 22 disposed within the first concrete body 21, and adjacent two first generating units 22 are connected by concrete in the first concrete body 21; the second part 30 is disposed on the top of the first part 20, and the second part 30 includes a second concrete body 31 and a functional structure 32 disposed within the second concrete body 31, and a buffer connection part 40 is provided between the plurality of second concrete bodies 31, the buffer connection part 40 extending along a second direction, the first direction being perpendicular to the second direction.

[0026] It is understood that both the first concrete main body and the second concrete main body 31 are made of concrete. The first direction is the X-axis direction, and the second direction is the Y-axis direction. The hydropower plant 10, which can suppress the extension of structural joints, includes a first part 20 and multiple second parts 30 arranged at intervals along the first direction on the first part 20. It adopts a segmented structural design with an integral lower part and separate upper parts. The first part 20, which is integrally set at the lower part, provides a stable foundation support for the plant and avoids the problem of foundation load dispersion caused by the division of the main body. Adjacent first units 22 are connected as a whole through the concrete of the first concrete main body 21, so that the first part 20 forms a complete load-bearing whole, rather than a structure with independent units. This allows the vibration load generated by the operation of the first unit 22 to be evenly transferred to the entire first concrete main body 21, avoiding the concentration of vibration in the area around the first unit 22 and causing excessive local stress. The multiple second parts 30 set in the upper part can flexibly adapt to the deformation caused by temperature changes, vibration and other working conditions. Compared with the integral upper structure, it can effectively release stress and vibration load, reduce the occurrence of stress concentration, and improve the stability of the plant.

[0027] The second part 30 is located on top of the first part 20. A structural joint is provided between two adjacent second parts 30. A buffer connection part 40 is provided between multiple second concrete bodies 31, that is, a buffer connection part 40 is provided in the structural joint. The buffer connection part 40 extends along the second direction, which is perpendicular to the first direction. The buffer connection part 40 connects the second part 30 and can absorb the interaction force generated by deformation between adjacent second parts 30, playing a role in buffering and shock absorption. It avoids the extension of cracks due to stress accumulation at the structural joint, further enhancing the stability of the upper structure of the hydropower plant 10 that can suppress the extension of the structural joint, and extending the service life of the hydropower plant 10 that can suppress the extension of the structural joint. Compared with the traditional structural joint design that is one joint to the end, the upper part of this application is split and the lower part is set as a whole. A buffer connection part is provided between the split second parts, which effectively avoids the stress concentration and structural joint expansion risk caused by the structural joint penetrating the whole structure, improves the overall durability and safety of the structure, and effectively reduces the weakening of the overall structural strength by the structural joint.

[0028] Specifically, the functional structure 32 may include functional components such as a house, a shaft or a generator jack, and a second concrete body 31 is provided around the functional structure 32. The second concrete body 31 is integrated with the concrete structure of the first concrete body 21.

[0029] Please refer to the details. Figure 5 A bending moment simulation diagram is provided for both the traditional one-slit-through structural joint design and the structural design of this application. Figure 5 Figure (a) in the figure is a schematic diagram of bending moment simulation for a traditional one-slit-through structural joint design. Figure 5 Figure (b) is a schematic diagram of the bending moment simulation of the structural design of this application. For ease of design and simulation, a frame structure is used for simulation. In the simulation diagram of this application, the bending moment represents the bending moment of the second part 30 on the corresponding area of ​​the first part 20. It can be understood that the first part 30 of this application is an integral structure. It can be clearly seen that the positive bending moment D1 of the traditional structure simulation is significantly larger than the positive bending moment D3 of the structural simulation of this application, and the negative bending moment D2 of the traditional structure simulation is significantly larger than the negative bending moment D4 of the structural simulation of this application. This indicates that this application, through the synergistic effect of the split design and the buffer connection, significantly reduces the bending moment response of the structure under load, effectively improves the stress distribution, reduces the risk of structural joint extension, and thus improves the overall mechanical performance and seismic resistance of the hydropower station powerhouse.

[0030] In some embodiments, please refer to the following for details. Figure 2 , Figure 3 , Figure 4The buffer connection part 40 includes two first connection parts 41 respectively disposed on adjacent side walls of two adjacent second concrete bodies 31 and a second connection part 42 connecting the bottom ends of the two first connection parts 41; wherein the bottom end of the second connection part 42 is attached to the top of the first part 20.

[0031] The second connecting part 42 connects the bottom ends of the two first connecting parts 41 and fits against the top of the first part 20. On the one hand, it forms the two first connecting parts 41 into a whole, improves the structural strength of the buffer connecting part 40 itself, and avoids damage to the buffer connecting part 40 due to excessive force. On the other hand, by fitting against the top of the first part 20, it transfers part of the load of the upper second part 30 to the first part 20, realizes the force coordination of the upper and lower structures, reduces the independent bearing pressure of the upper structure, and improves the durability of the buffer connecting part 40 and the second part 30.

[0032] In some embodiments, please refer to the following for details. Figure 2 , Figure 3 , Figure 4 The buffer connection part 40 also includes a plurality of first anchor bars 43, which are disposed on the outer side wall of the first connection part 41 and inserted into the second concrete body 31. The first anchor bar 43 strengthens the connection between the first connecting part 41 and the second part 30, solving the problem that the buffer connecting part 40 and the second part 30 are prone to detachment and separation due to being only connected by sidewall adhesion. The first anchor bar 43 is inserted into the second concrete body 31 to form an embedded connection structure, which transforms the connection between the first connecting part 41 and the second part 30 from surface adhesion to deep anchoring, improving the firmness and stability of the connection. When adjacent second parts 30 deform and generate interaction forces, the first anchor bar 43 can effectively transfer the force, avoiding stress concentration at the connection interface between the first connecting part 41 and the second part 30, and preventing cracks at the connection interface. At the same time, the first anchor bar 43 enhances the cooperative force-bearing capacity of the buffer connecting part 40 and the second part 30, so that the buffering effect of the buffer connecting part 40 can be more effectively exerted, further reducing stress accumulation between the second parts 30, and ensuring the stability and durability of the second part 30.

[0033] In some embodiments, please refer to the following for details. Figure 2For the same first connection portion 41, multiple first anchor bars 43 are arranged along the second direction to form a first bar group 44, and multiple first bar groups 44 are arranged along the vertical direction; wherein, in the vertical direction, multiple first anchor bars 43 of adjacent first bar groups 44 are staggered. The first anchor bar 43 forms an anchoring system on the outer wall of the first connection 41, avoiding excessive local stress caused by concentrated anchor points and making the force transmission between the first connection 41 and the second part 30 more uniform. The staggered arrangement of the first anchor bars 43 of adjacent bar groups further optimizes the stress performance of the anchoring system. Compared with the aligned arrangement, the staggered arrangement can make the anchoring stress more dispersed in the second part 30, expand the stress transmission range, and reduce local stress peaks. The staggered arrangement of anchor bars forms a three-dimensional interlaced anchoring structure, which enhances the all-round constraint on the first connection 41, prevents the first connection 41 from shifting in the horizontal or vertical direction, improves the stability and pull-out and shear resistance of the connection between the buffer connection 40 and the second part 30, and thus enhances the deformation resistance of the entire second part 30.

[0034] In some embodiments, please refer to the following for details. Figure 2 The first anchor bar 43 includes two first reinforcing bars 45 perpendicular to the first connecting portion 41 and a second reinforcing bar 46 connecting the two first reinforcing bars 45. The first reinforcing bars 45 are connected to the first connecting portion 41 through the second reinforcing bars 46. The two first reinforcing bars 45 perpendicular to the first connecting portion 41 penetrate into the second part 30, forming a bidirectional anchoring point, which expands the contact area between the anchor bar and the concrete of the second part 30, and improves the anchoring force and pull-out resistance of the anchor bar. The second reinforcing bar 46 connects the two first reinforcing bars 45 and is connected to the first connecting portion 41, so that the two first reinforcing bars 45 form a whole under stress, avoiding stress concentration caused by the independent stress of a single reinforcing bar, and at the same time, evenly transferring the force of the first connecting portion 41 to the two first reinforcing bars 45, and then dispersing it into the interior of the second part 30. The first reinforcing bars 45 are connected to the first connecting portion 41 through the second reinforcing bars 46. The second reinforcing bars 46 increase the connection length between the first reinforcing bars 45 and the first connecting portion 41, improve the redundancy and reliability of the connection, and enhance the adaptability of the connection structure under extreme loads.

[0035] In some embodiments, please refer to the following for details. Figure 2 , Figure 3 , Figure 4The buffer connection 40 further includes multiple second anchor bars 47, which are disposed on the outer wall of the second connection 42 and inserted into the first concrete body 21. The second anchor bars 47 achieve a deep anchorage connection between the buffer connection 40 and the first part 20, compensating for the insufficient connection strength caused by the second connection 42 only adhering to the top of the first part 20 from the bottom. The second anchor bar 47 is inserted inside the first concrete main body 21, so that the buffer connection part 40 and the first part 20 form a solid whole, improving the connection stability between the upper and lower structures. When the upper second part 30 deforms or bears a load, part of the load can be efficiently transferred to the first part 20 through the buffer connection part 40 and the second anchor bar 47, realizing the force coordination between the upper and lower structures, reducing the load accumulation of the upper second part 30, and avoiding damage to the second part 30 due to excessive independent bearing. The second anchor bar 47 can limit the displacement of the buffer connection part 40 itself, prevent the buffer connection part 40 from shifting in the horizontal or vertical direction, ensure the stable performance of its buffering effect, and further improve the integrity and load-bearing capacity of the entire hydropower station powerhouse 10 structure that can suppress the extension of structural joints.

[0036] In some embodiments, please refer to the following for details. Figure 3 , Figure 4 The first part 20 is further provided with a steel mesh 23, through which multiple second anchor bars 47 pass and connect. The cooperation between the steel mesh 23 and the second anchor bars 47 further strengthens the connection strength between the second anchor bars 47 and the first part 20, and at the same time improves the local structural strength of the first part 20. The steel mesh 23 forms a uniform stress network inside the first part 20. After the second anchor bars 47 pass through and connect to the steel mesh 23, the anchoring force of the second anchor bars 47 is evenly transmitted to the entire first part 20 through the steel mesh 23, avoiding local stress concentration around the second anchor bars 47 and preventing cracks from forming at the anchor bar connection points in the first part 20. The steel mesh 23 constrains the second anchor bars 47, preventing the second anchor bars 47 from bending or shifting due to stress, ensuring the anchoring stability of the second anchor bars 47, improving the reliability of the connection between the upper and lower structures, and enhancing the overall crack resistance and load-bearing stability of the plant.

[0037] Specifically, the diameter of the first anchor bar 43 and the second anchor bar 47 can be from 16mm to 25mm. The horizontal distance between the centers of two adjacent first anchor bars 43 is 400mm to 600mm in the horizontal direction, and the vertical distance between the centers of two adjacent first anchor bars 43 is 250mm to 350mm.

[0038] In some embodiments, please refer to the following for details. Figure 3 , Figure 4The buffer connection 40 further includes a sealant 48, which is disposed between two adjacent first connection parts 41 and connected to the second connection part 42. The sealant 48 further optimizes the sealing and buffering performance of the buffer connection 40; the sealant 48 fills the gap between the two first connection parts 41, effectively preventing rainwater, water vapor, dust and other impurities from entering the interior of the buffer connection 40, avoiding damage to the first connection parts 41, the second connection parts 42 and anchor bars due to impurity erosion and water accumulation corrosion, significantly improving the durability of the buffer connection 40; the sealant 48 is usually made of flexible or elastic material, which can further absorb the deformation stress and vibration energy between adjacent second parts 30, helping to improve the buffering and shock absorption effect of the buffer connection 40 and reduce the mutual collision and wear between the first connection parts 41; the sealant 48 and the second connection part 42 are connected to form a complete sealed structure, making the stress on the buffer connection 40 more uniform, avoiding local stress concentration caused by the existence of gaps, and ensuring the structural stability of the buffer connection 40.

[0039] Specifically, please refer to Figure 3 , Figure 4 The height of the sealant 48 is greater than the height of the first connecting part 41. The sealant 48 protrudes vertically from the first connecting part 41. The sealant 48 can better fill the gap between the tops of two adjacent second parts 30, effectively preventing external environmental media from seeping into the connection area. At the same time, it provides greater compression margin when the structure is subjected to stress and deformation, thus enhancing the sealing reliability.

[0040] Specifically, the material of the filling part 48 can be a material with good elasticity and sealing performance, such as asphalt board, foam board or rubber waterstop, which can adapt to small displacements and deformations between structures and maintain a long-term stable sealing effect.

[0041] For details, please refer to [link / reference]. Figure 3 , Figure 4 The second connecting part 42 is embedded in the first concrete body 21 and is tightly integrated with the concrete structure of the first concrete body 21 to ensure the firmness and integrity of the connection. The embedding depth of the second connecting part 42 needs to be designed according to the structural stress requirements. For example, the side of the second connecting part 42 can be flush with or slightly concave with the side wall of the first concrete body 21 to ensure the sealing of the connection between the grouting part 48 and the second connecting part 42.

[0042] Specifically, the distance between two adjacent buffer connection parts 40 is less than or equal to 40m.

[0043] In some embodiments, please refer to the following for details. Figure 2 , Figure 3 , Figure 4The outermost wall of the bottom of the second concrete main body 31 is arc-shaped. In the direction from the first part 20 to the top of the second part 30, the distance between adjacent sidewalls of two adjacent second concrete main bodies 31 first increases, then decreases, and then remains constant. The arc-shaped design of the outermost wall of the bottom of the second concrete main body 31 and the gradual design of the gap between adjacent sidewalls optimize the stress distribution and deformation adaptability of the superstructure. Compared with right-angle sidewalls, the arc-shaped inner sidewalls can reduce stress concentration and avoid cracks at the bottom corners due to temperature changes, vibrations, and other factors. The design of the gap between adjacent sidewalls first increasing, then decreasing, and then remaining constant provides a gradual deformation space for the connection area between the bottom of the first connecting part 41 and the second connecting part 42. The connection area between the second connecting part 42 and the first connecting part 41 forms a teardrop-like shape, making the stress distribution more uniform, effectively mitigating structural deformation caused by thermal expansion and contraction or seismic loads, effectively releasing the deformation energy of the second part 30, reducing the risk of the gap between two adjacent second parts 30 continuing to extend downwards, and improving the crack resistance and stability of the superstructure.

[0044] Specifically, the first connecting portion 41 and the second connecting portion 42 can be made of high-strength steel plate with a thickness of 6mm to 10mm. The distance between two adjacent first connecting portions 41 can be 20mm to 30mm, matching the distance between the sidewalls of two adjacent second portions 30. The bending radius of the arc-shaped inner curved surface of the second connecting portion 42 is not less than 60mm. The total height of the first connecting portion 41 and the second connecting portion 42 can be 400mm to 600mm.

[0045] For details, please refer to [link / reference]. Figure 2 , Figure 4 Multiple second anchor bars 47 are arranged along the second direction to form a second bar group 49, and the multiple second bar groups 49 are arranged along the arc-shaped circumferential direction of the second connection portion 42. The arc-shaped arrangement of the second bar groups 49 matches the geometry of the second connection portion 42, effectively adapting to the stress distribution characteristics of the connection area and improving the stress uniformity of the anchoring system.

[0046] Combination Figure 6 , Figure 7A , Figure 7B , Figure 7C Another embodiment of the invention provides a construction method for a hydroelectric powerhouse that can suppress the extension of structural joints, comprising: S1. Pour concrete on the first reference surface 11 to form the bottom 201 of the first part. Please refer to [link / reference] for details. Figure 7A ; S2. A plurality of buffer connecting portions 40 are provided above the bottom 201 of the first portion, arranged at intervals along a first direction. The buffer connecting portions 40 are spaced apart from the bottom 201 of the first portion. Each buffer connecting portion includes two first connecting portions 41, a second connecting portion 42 connecting the bottom ends of the two first connecting portions 41, and a filler portion 48 disposed between two adjacent first connecting portions 41. For details, please refer to [link / reference]. Figure 7A as well as Figure 3 , Figure 4 ; S3. Concrete is poured above the bottom 201 of the first part and on both sides of the first connecting part 41, so that the concrete pouring stop surface is higher than the bottom surface of the buffer connecting part 40, thereby forming a top 202 of the first part and a plurality of spaced-apart bottoms 301 of the second part above the bottom 21 of the first part, so that the top 202 of the first part and the bottom 301 of the second part are integrally formed. (See details below.) Figure 7B as well as Figure 7C .

[0047] By constructing a hydropower plant with a monolithic lower section and multiple separate upper sections, with buffer connections between adjacent sections, and integrating multiple generator units within the monolithic first section, the foundation structure of the hydropower plant with the ability to suppress structural joint extension possesses excellent integrity and load-bearing capacity. Simultaneously, the separate second sections effectively release stress and vibration loads, while the buffer connections further absorb stress, preventing the extension of gaps between adjacent second sections. This significantly improves the structural stability and durability of the hydropower plant under complex operating conditions, extending its service life. Furthermore, during construction, precise control of structural function is achieved through phased pouring. First, the bottom of the first section is constructed to ensure foundation rigidity; then, the buffer connections are installed and precisely aligned; finally, the top of the first section and the second sections are poured simultaneously, ensuring that the top of the first section and the bottom of the second section are integrally formed.

[0048] It is understandable that concrete pouring is often done in layers, and construction joints are inevitable between layers. If these construction joints are not handled properly, they can easily become weak points in the structure. In this construction method, the concrete around the bottom of the buffer connection 40 (the bottom of the second connection 42) (the bottom of the second part 30) and the top of the first part 20 are poured and solidified simultaneously to form a continuous concrete structure, ensuring that the connection between the first part and the second part has sufficient shear strength and integrity. When pouring the concrete around the bottom of the buffer connection 40 (referred to as the bottom pouring layer of the buffer connection 40), the starting surface of the concrete pouring is located below the bottom surface of the buffer connection 40, and the stopping surface of the concrete pouring is located above the bottom surface of the buffer connection 40. This avoids the formation of construction joints when constructing the concrete around the bottom of the corresponding buffer connection 40, thereby ensuring continuous and uniform stress transfer when the structure is under load and effectively preventing structural joints from expanding along the construction joints.

[0049] Specifically, for the bottom pouring layer of the buffer connection 40, the distance L1 between the starting surface of the concrete pouring (i.e. the top surface of the bottom 201 of the first part) and the bottom surface of the buffer connection 40 can be 1m to 2m. This distance setting can ensure that the concrete fully wraps the bottom area of ​​the buffer connection, enhances the interlocking force of the interface, forms a continuous concrete structure, and ensures that the connection between the first part and the second part has sufficient shear strength and integrity.

[0050] Specifically, for the bottom pouring layer of the buffer connection 40, the distance L2 between the concrete pouring stop surface and the bottom surface of the buffer connection 40 can be adjusted according to the actual situation. For example, L2 is greater than or equal to the sum of the heights of the first connection 41 and the second connection 42, which ensures that the concrete in the top area of ​​the first connection 41 is fully compacted, reduces the concrete construction joint at the top of the first connection 41, effectively anchors the first connection 41, and further improves the shear bearing capacity and deformation coordination ability of the connection node.

[0051] In some embodiments, please refer to the following for details. Figure 3 , Figure 4 The first part 20 is further provided with a steel mesh 23, through which multiple second anchor bars 47 pass and are connected. The cooperation between the steel mesh 23 and the second anchor bars 47 further strengthens the connection strength between the second anchor bars 47 and the first part 20, while also improving the local structural strength of the first part 20. It also provides a stable support benchmark for the erection of the buffer connection part 40, ensuring that it is accurately positioned and does not deform during the pouring process.

[0052] Another embodiment of the present invention provides a hydroelectric power station including a hydroelectric power station building as described above that can suppress the extension of structural joints.

[0053] For details regarding the structure of the hydropower plant that can suppress the extension of structural joints, please refer to any of the above-mentioned hydropower plant structures and their accompanying drawings; further details will not be provided here.

[0054] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A hydroelectric power plant building capable of inhibiting structural joint extension, characterized in that, The first part (20) comprises a first concrete main body (21) and a plurality of first units (22) arranged in the first concrete main body (21), and the first units (22) are connected by concrete in the first concrete main body (21); The second part (30) is arranged on the top of the first part (20), and the second part (30) comprises a second concrete main body (31) and a functional structure (32) arranged in the second concrete main body (31), and a plurality of the second concrete main bodies (31) are provided with a buffer connecting portion (40) extending in a second direction, and the first direction is perpendicular to the second direction. The buffer connecting portion (40) comprises two first connecting portions (41) arranged on the adjacent side walls of the adjacent two second concrete main bodies (31) respectively and a second connecting portion (42) connecting the bottom ends of the two first connecting portions (41); 2. A hydropower plant structure according to claim 1, c h a r a c t e r i s e d in that The bottom end of the second connecting portion (42) is attached to the top of the first part (20). The buffer connecting portion (40) further comprises a plurality of first anchor bars (43), and the first anchor bars (43) are arranged on the outer side walls of the first connecting portions (41) and are inserted into the second concrete main body (31).

3. A hydropower plant structure according to claim 2, c h a r a c t e r i s e d in that For the same first connecting portion (41), a plurality of first anchor bars (43) are arranged in the second direction to form a first bar group (44), and a plurality of first bar groups (44) are arranged in the vertical direction.

4. A hydropower plant structure according to claim 3, c h a r a c t e r i s e d in that The plurality of first anchor bars (43) of the adjacent two groups of first bar groups (44) are arranged in a staggered manner in the vertical direction. The buffer connecting portion (40) further comprises a plurality of second anchor bars (47), and the second anchor bars (47) are arranged on the outer side walls of the second connecting portion (42) and are inserted into the first concrete main body (21).

5. A hydropower plant structure according to any one of claims 2 to 4, c h a r a c t e r i s e d in that The first part (20) further comprises a steel mesh (23), and a plurality of second anchor bars (47) pass through the steel mesh (23) and are connected with the steel mesh (23).

6. A hydropower plant structure according to claim 5, c h a r a c t e r i s e d in that The buffer connecting portion (40) further comprises a filling portion (48), and the filling portion (48) is arranged between the adjacent two first connecting portions (41) and is connected with the second connecting portion (42).

7. A hydropower plant structure according to claim 2, wherein The outer side wall of the bottom of the second concrete main body (31) is arc-shaped, and in the direction from the first part (20) to the top of the second part (30), the distance between the adjacent side walls of the adjacent two second concrete main bodies (31) first increases, then decreases, and then remains unchanged.

8. The hydropower plant structure according to claim 1, wherein The method comprises the following steps:

9. A construction method of a hydroelectric power plant building capable of suppressing structural joint extension, characterized by, Pouring concrete on the first reference surface (11) to form the bottom (201) of the first part; ​ A plurality of buffer connecting parts (40) are arranged in a first direction at intervals above the bottom (201) of the first part, the buffer connecting parts (40) being arranged at intervals from the bottom (201) of the first part, the buffer connecting parts including two first connecting parts (41), a second connecting part (42) connecting bottom ends of the two first connecting parts (41), and a joint filling part (48) provided between adjacent two first connecting parts (41); Concrete is cast above the bottom (201) of the first part and on both sides of the first connecting part (41), so that a concrete casting stop surface is higher than a bottom surface of the buffer connecting part (40), so as to form a top (202) of the first part and a plurality of second part bottoms (301) arranged at intervals above the bottom (201) of the first part, so that the top (202) of the first part and the second part bottoms (301) are integrally arranged.

10. A hydroelectric power plant, characterized by A hydropower station powerhouse comprising the structure capable of inhibiting the extension of the structure joint as claimed in any one of claims 1 to 8.

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