Hydraulic concrete dam climbing corridor prefabricated structure
By using prefabricated structures and limiting blocks with limiting grooves, the problem of labor-intensive and time-consuming construction of the climbing gallery of hydraulic concrete dams was solved, achieving efficient and safe construction and waterproofing effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-02
- Publication Date
- 2026-04-03
AI Technical Summary
The construction of existing hydraulic concrete dam ramp corridors is labor-intensive and time-consuming, and traditional construction methods consume resources, making it difficult to achieve synchronous ascent.
The prefabricated structure, consisting of a first component, a second component, and a third component, is used to form the corridor. The protective netting is connected by lifting rings. An anti-seepage layer is installed on the outside of the prefabricated components. The corridor is connected by limiting blocks and limiting grooves and is constructed in conjunction with the foundation layer.
Centralized prefabrication at the prefabrication yard improves quality stability and construction efficiency, reduces the use of reusable materials, and ensures the waterproofing effect and safety of the corridor.
Smart Images
Figure CN224078236U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of construction, and in particular relates to a prefabricated structure for a climbing corridor of a hydraulic concrete dam. Background Technology
[0002] As a component of the concrete dam, the climbing gallery undertakes tasks such as curtain grouting, drainage, monitoring, and maintenance. Because it also serves as a grouting cover, the climbing gallery is generally located a considerable distance from the two dam shoulders, posing certain difficulties for advanced construction. If traditional construction methods are used to raise it synchronously with the dam body, it will not only be labor-intensive and time-consuming, but also consume resources. Summary of the Invention
[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a prefabricated structure for the climbing gallery of a hydraulic concrete dam.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A prefabricated structure for a climbing gallery of a hydraulic concrete dam, the prefabricated structure comprising a plurality of prefabricated components, which are assembled sequentially from bottom to top;
[0006] The prefabricated components include a first component, a second component, two third components, and a protective net. The first and second components face inward and are arranged opposite each other. The third components are all located between the first and second components. The first component, the second component, and the two third components are combined to form a formed corridor. Each of the first, second, and third components is equipped with a lifting ring. The protective net is connected to the lifting ring in sequence.
[0007] Furthermore, the prefabricated structure is located above the foundation layer, which is located at the upper elevation of the horizontal corridor top slab.
[0008] Furthermore, the prefabricated component is provided with an impermeable layer on its outer side.
[0009] Furthermore, the first component is provided with a staircase, and drainage ditches are provided on both sides of the staircase, the height of which is lower than the height of the staircase.
[0010] Furthermore, a limiting block is provided on one side of the prefabricated component, and a limiting groove is provided on the other side. Adjacent prefabricated components are connected by the cooperation of the limiting block and the limiting groove. The first component, the second component, and the third component are all provided with limiting blocks and limiting grooves.
[0011] Furthermore, the second component is provided at an angle with the horizontal plane.
[0012] Compared with the prior art, this utility model has the following advantages:
[0013] The prefabricated structure for the climbing gallery of the hydraulic concrete dam described in this utility model is prefabricated centrally in the prefabrication yard, which is energy-saving and environmentally friendly and can effectively improve quality stability. The prefabricated components are connected by the cooperation of limiting blocks and limiting holes, which makes construction and assembly quick and convenient, with high installation accuracy and good overall stability. At the same time, it reduces the occupation of turnover materials such as scaffolding and formwork.
[0014] The prefabricated structure for the climbing gallery of the hydraulic concrete dam described in this utility model adopts anti-seepage measures around the prefabricated components, resulting in good waterproofing of the gallery. Furthermore, the horizontal layer of the gallery is secured with hanging rings as netting fixing components, making construction quick, safe, and reliable. Attached Figure Description
[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0016] Figure 1 This is a schematic diagram of the prefabricated components described in an embodiment of the present utility model;
[0017] Figure 2 This is a schematic diagram of the first component described in an embodiment of the present utility model;
[0018] Figure 3 This is a cross-sectional view of point A in an embodiment of the present invention;
[0019] Figure 4 This is a cross-sectional view of point B in the embodiment of the present invention.
[0020] Figure 5 This is a longitudinal cross-sectional view of the prefabricated component described in an embodiment of the present invention;
[0021] Figure 6 This is a schematic diagram of the base layer described in an embodiment of the present utility model.
[0022] Explanation of reference numerals in the attached figures:
[0023] 1. Staircase; 2. Drainage ditch; 3. First component; 4. Second component; 5. Third component; 6. Limiting groove; 7. Limiting block; 8. Foundation layer; 9. Protective net; 10. Lifting ring; 11. Seepage-proof layer. Detailed Implementation
[0024] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] like Figure 1-6 As shown, a prefabricated structure for a climbing gallery of a hydraulic concrete dam includes several prefabricated components, which are assembled sequentially from bottom to top. Each prefabricated component includes a first component 3, a second component 4, two third components 5, and a protective net 9. The first component 3 and the second component 4 face inward and are arranged opposite each other. The third components 5 are all located between the first component 3 and the second component 4. The first component 3, the second component 4, and the two third components 5 are combined to form a formed gallery. Each of the first component 3, the second component 4, and the third component 5 is provided with a lifting ring 10. The protective net 9 is sequentially connected to the lifting ring 10.
[0029] The prefabricated structure is located above the foundation layer 8, which is situated at the upper elevation of the horizontal corridor roof slab. An impermeable layer 11 is provided on the outer side of each prefabricated component. A limiting block 7 is provided on one side of each prefabricated component, and a limiting groove 6 is provided on the other side. Adjacent prefabricated components are connected through the cooperation of the limiting block 7 and the limiting groove 6.
[0030] A staircase 1 is provided on the first component 3, and drainage ditches 2 are provided on both sides of the staircase 1. The height of the drainage ditches 2 is lower than the height of the staircase 1. The second component 4 is provided at an angle with the horizontal plane.
[0031] Taking a roller-compacted concrete gravity dam as an example, this structure is also applicable to cast-in-place concrete gravity dams. Taking the gallery's design to accommodate curtain grouting construction as an example, the slope ratio is 1:1.15, the structural dimensions are 4×4.8 (width×height) m, the net dimensions are 3×3.5 (width×height) m, and a 300×160 (width×height) step 1 mm is provided on the upper part of the base slab. 300×300 mm drainage ditches 2 are provided on both sides of step 1.
[0032] At the upper elevation of the horizontal corridor's top slab, a foundation layer 8 is installed for the conversion of prefabricated components. The first component 3, the second component 4, and the third component 5 are installed on top of the foundation layer 8, forming the first layer of prefabricated component installation. The limiting blocks 7 of the components above the foundation layer 8 are assembled with the limiting grooves 6 of the lower components. The first component 3 is installed first, followed by the second component 4. After the first and second components 3 and 4 are accurately positioned, the third components 5 on the upstream and downstream sides are installed respectively, forming the finished corridor. Protective netting 9 is spaced no more than 10m apart and connected to hanging rings 10, forming the horizontal layer protection of the corridor. A seepage-proof layer 11, approximately 50cm wide, is applied around the first component 3, the second component 4, and the third component 5 to ensure good seepage prevention of the corridor.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A prefabricated structure for an inclined gallery of a hydraulic concrete dam, characterized in that: The prefabricated structure includes several prefabricated components, which are assembled sequentially from bottom to top; The prefabricated components include a first component, a second component, two third components, and a protective net. The first and second components face inward and are arranged opposite each other. The third components are all located between the first and second components. The first component, the second component, and the two third components are combined to form a formed corridor. Each of the first, second, and third components is equipped with a lifting ring. The protective net is connected to the lifting ring in sequence.
2. The prefabricated structure for the climbing gallery of a hydraulic concrete dam according to claim 1, characterized in that: The prefabricated structure is located above the foundation layer, which is located at the upper elevation of the top slab of the horizontal corridor.
3. The prefabricated structure for the climbing gallery of a hydraulic concrete dam according to claim 1, characterized in that: The prefabricated components are provided with an impermeable layer on the outside.
4. The prefabricated structure for the climbing gallery of a hydraulic concrete dam according to claim 1, characterized in that: The first component is provided with a staircase, and drainage ditches are provided on both sides of the staircase, with the height of the drainage ditches being lower than the height of the staircase.
5. The prefabricated structure for the climbing gallery of a hydraulic concrete dam according to claim 1, characterized in that: The prefabricated component has a limiting block on one side and a limiting groove on the other side. Adjacent prefabricated components are connected by the cooperation of the limiting block and the limiting groove.
6. The prefabricated structure for the climbing gallery of a hydraulic concrete dam according to claim 1, characterized in that: The second component has an angle with the horizontal plane.