Filling body inclined shaft structure

Abstract

The utility model discloses a filling body inclined shaft structure which comprises precast concrete beams, the precast concrete beams form a main body structure of the inclined shaft in a stacking and splicing mode, each layer of the inclined shaft is formed by splicing four precast concrete beams, and fixing steel bars are reserved among the precast concrete beams of each layer. The utility model has the beneficial effects that the laminated and assembled precast concrete beams are used as the main body structure of the inclined shaft of the filling body, and the steel crawling ladder convenient for the construction of the grouting hole and the drainage hole is arranged on the fixed steel bar on the inner side of the inclined shaft of the filling body; therefore, when the filling body inclined shaft is constructed, the time for pouring concrete and waiting for concrete solidification can be saved, the construction period of the filling body inclined shaft is effectively shortened, and efficient construction of a filling body on a dam body is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, specifically to a embankment inclined shaft structure. Background Technology

[0002] River dams typically have galleries for foundation grouting, drainage, safety monitoring, inspection and maintenance, operation, and ensuring traffic flow within the dam. The longitudinal slope of the galleries is generally gentler than 45°. When the slopes on both banks are steeper than 45°, the galleries on each level are connected by vertical or inclined shafts.

[0003] Currently, when constructing inclined shafts on the fill in river dams, the main method is to install formwork on the fill and pour concrete into the formwork to achieve the construction of the inclined shaft. Although this method can achieve the construction of inclined shafts on the fill, the layer-by-layer pouring method is time-consuming and labor-intensive, which seriously affects the construction progress of the fill in the dam and results in low construction efficiency of the fill in the dam. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a structure for inclined shafts that can be assembled and constructed in a layer-by-layer manner, thereby effectively shortening the construction period of the inclined shaft and facilitating the efficient construction of the embankment on the dam body.

[0005] This utility model is achieved through the following technical solution: This utility model proposes a sloping shaft structure for a filling body, including precast concrete beams. The precast concrete beams are assembled in a layered manner to form the main structure of the sloping shaft. Each layer of the sloping shaft is assembled from four precast concrete beams. Fixed reinforcing bars are reserved between the precast concrete beams in each layer. Steel ladders are installed on the fixed reinforcing bars. Rolled filling body is provided under the precast concrete beams. The underside of the rolled filling body is the dam foundation surface. Grouting holes are also provided on the upper surface of the precast concrete beams facing the grouting part. Drainage holes are also provided on the upper surface of the precast concrete beams facing the drainage part.

[0006] Furthermore, the precast concrete beam is a square column structure.

[0007] By adopting the above technical solution, the precast concrete beams with square columnar structure can ensure the stability of each layer of the inclined shaft after assembly.

[0008] Furthermore, the fixing reinforcing bars are embedded in the precast concrete beam.

[0009] By adopting the above technical solution and embedding the fixed steel bars in the precast concrete beam, the structural strength of the precast concrete beam can be improved.

[0010] Furthermore, one end of the fixed reinforcing bar facing the inside of the inclined shaft extends out of the precast concrete beam.

[0011] By adopting the above technical solution, one end of the fixing steel bar extends out of the precast concrete beam, which facilitates the convenient fixing of the steel ladder later.

[0012] Furthermore, each layer of the precast concrete beams is in contact with the compacted fill.

[0013] By adopting the above technical solution, the precast concrete beam is made into close contact with the compacted fill, which facilitates the stable installation of the inclined shaft structure within the fill after construction.

[0014] Furthermore, the precast concrete beams in each layer are distributed in a stepped manner.

[0015] By adopting the above technical solution, the precast concrete beams distributed in a stepped manner enable the inclined shaft structure to be conveniently extended along the slope direction of the compacted fill after construction.

[0016] Furthermore, one side of the steel ladder is welded to the corresponding fixed reinforcing bar.

[0017] By adopting the above technical solution, the welding fixing method makes the steel ladder more firmly fixed on one side.

[0018] Furthermore, the other side of the steel ladder is connected to the corresponding precast concrete beam by expansion bolts.

[0019] By adopting the above technical solution, the steel ladder can be reliably fixed in the inclined shaft under the action of expansion bolts, and the construction of the grouting hole and the drainage hole can be facilitated by the steel ladder.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] To address the current issue of low construction efficiency in constructing inclined shafts on river dam fill, which primarily involves installing formwork on the fill and pouring concrete within it, this method, while achieving the desired result, is time-consuming and labor-intensive due to the layer-by-layer pouring process. This invention employs precast concrete beams assembled in layers as the main structure of the inclined shaft. A steel ladder is installed on the fixed reinforcing bars inside the inclined shaft to facilitate the construction of grouting and drainage holes. This eliminates the time spent pouring and waiting for concrete to solidify, effectively shortening the construction period and facilitating efficient construction of the fill on the dam. Attached Figure Description

[0022] Figure 1 This is a top view of the inclined shaft structure of the filling body described in this utility model;

[0023] Figure 2 This is a main sectional view of an inclined shaft structure of a filling body as described in this utility model;

[0024] Figure 3 This is a right sectional view of a sloping shaft structure of a filling body as described in this utility model.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Precast concrete beams; 2. Grouting holes; 3. Drainage holes; 4. Reinforcing steel bars; 5. Dam foundation surface; 6. Rolled fill; 7. Steel ladder. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figures 1-3 As shown, the inclined shaft structure of the filling body in this embodiment includes precast concrete beams 1. The precast concrete beams 1 are assembled in a layered manner to form the main structure of the inclined shaft. Each layer of the inclined shaft is assembled from four precast concrete beams 1. Fixed reinforcing bars 4 are reserved between the precast concrete beams 1 in each layer. Steel ladders 7 are installed on the fixed reinforcing bars 4. Rolled filling body 6 is set on the lower side of the precast concrete beams 1. The lower side of the rolled filling body 6 is the dam foundation surface 5. Grouting holes 2 are also opened on the upper side of the precast concrete beams 1 facing the grouting part. Drainage holes 3 are also opened on the upper side of the precast concrete beams 1 facing the drainage part. The steel ladders 7 facilitate the convenient construction of grouting holes 2 and drainage holes 3. Grouting holes 2 are mainly used for curtain grouting of bedrock on the bank slope. Drainage holes 3 are used for drainage of bedrock dam foundation on the bank slope. The fixed reinforcing bars 4 are exposed for 5-10cm, which supports the adjacent concrete beams and prevents them from moving during the concrete rolling process.

[0029] like Figures 1-3 As shown, in this embodiment, the precast concrete beam 1 is a square column structure. The square column structure of the precast concrete beam 1 can ensure the stability of each layer of the inclined shaft after assembly. The fixing steel bar 4 is embedded in the precast concrete beam 1. Embedding the fixing steel bar 4 in the precast concrete beam 1 can improve the structural strength of the precast concrete beam 1. One end of the fixing steel bar 4 facing the inside of the inclined shaft extends out of the precast concrete beam 1. Extending one end of the fixing steel bar 4 out of the precast concrete beam 1 facilitates the convenient fixing of the steel ladder 7 later.

[0030] like Figures 1-3 As shown, in this embodiment, each layer of precast concrete beams 1 is in contact with the compacted fill 6, making the precast concrete beams 1 and the compacted fill 6 in close contact. This facilitates the stable installation of the inclined shaft structure within the fill after construction. The precast concrete beams 1 in each layer are distributed in a stepped manner. The stepped distribution of the precast concrete beams 1 allows the inclined shaft structure to be conveniently extended along the slope direction of the compacted fill 6 after construction.

[0031] like Figures 1-3 As shown, in this embodiment, one side of the steel ladder 7 is welded to the corresponding fixed reinforcing bar 4. The welding method makes the steel ladder 7 more firmly fixed on one side. The other side of the steel ladder 7 is connected to the corresponding precast concrete beam 1 by expansion bolts. Under the action of the expansion bolts, the steel ladder 7 can be reliably fixed in the inclined shaft.

[0032] The specific implementation process of this embodiment is as follows: During construction, the precast concrete beams 1 are first hoisted onto the compacted fill body 6 using a crane or loader. Then, four precast concrete beams 1 are reserved for each layer, and the concrete beams of each layer are connected in a stacked assembly manner along the inclined surface of the compacted fill body 6. Next, the compacted fill body 6 is evenly distributed on the outside of each layer of precast concrete beams 1, and a steel ladder 7 is installed inside the inclined shaft body formed by the precast concrete beams 1. Finally, the steel ladder 7 is used to open the corresponding precast concrete beams 1. The construction of the inclined shaft can be completed by grouting hole 2 and drainage hole 3. Since the precast concrete beam 1 assembled in layers is used as the main structure of the inclined shaft, and a steel ladder 7 is installed on the fixed steel bar 4 inside the inclined shaft to facilitate the construction of grouting hole 2 and drainage hole 3, the construction of the inclined shaft can save the time spent on pouring concrete and waiting for the concrete to solidify, thereby effectively shortening the construction period of the inclined shaft and facilitating the efficient construction of the dam body.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sloping shaft structure for a backfill body, characterized in that: The structure includes precast concrete beams (1), which are assembled in a stacked manner to form the main structure of the inclined shaft. Each layer of the inclined shaft is assembled from four precast concrete beams (1). Fixed reinforcing bars (4) are reserved between the precast concrete beams (1) in each layer. Steel ladders (7) are installed on the fixed reinforcing bars (4). Rolled fill (6) is provided on the lower side of the precast concrete beams (1). The lower side of the rolled fill (6) is the dam foundation surface (5). Grouting holes (2) are also provided on the upper side of the precast concrete beams (1) facing the grouting part. Drainage holes (3) are also provided on the upper side of the precast concrete beams (1) facing the drainage part.

2. The inclined shaft structure of the embankment according to claim 1, characterized in that: The precast concrete beam (1) is a square column structure.

3. The inclined shaft structure of the embankment according to claim 1, characterized in that: The fixed reinforcing bar (4) is embedded in the precast concrete beam (1).

4. The inclined shaft structure of the embankment according to claim 3, characterized in that: The end of the fixed reinforcing bar (4) facing the inside of the inclined shaft extends out of the precast concrete beam (1).

5. The inclined shaft structure of the embankment according to claim 1, characterized in that: Each of the precast concrete beams (1) in each layer is in contact with the roller-compacted fill (6).

6. The inclined shaft structure of the embankment according to claim 1, characterized in that: The precast concrete beams (1) in each layer are distributed in a stepped manner.

7. The inclined shaft structure of the embankment according to claim 1, characterized in that: The steel ladder (7) is welded to the corresponding fixed steel bar (4) on one side.

8. The inclined shaft structure of the embankment according to claim 7, characterized in that: The other side of the steel ladder (7) is connected to the corresponding precast concrete beam (1) by expansion bolts.

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