Rigid connecting structure for tail water platform of hydropower station

Abstract

The utility model discloses a rigid connection structure for a tail horizontal platform of a hydropower station, which belongs to the technical field of water conservancy and hydropower engineering and comprises a tail water gate pier, a tail horizontal platform plate is rigidly connected onto the tail water gate pier and comprises a plurality of shaped beams, and a plurality of pi-shaped beams are erected on the tail water gate pier side by side; a first concrete layer is poured on flange plates of the pi-shaped beams; second concrete layers are poured on the two sides of the pi-shaped sections of the pi-shaped beams, and the first concrete layers and the second concrete layers are connected into a whole. The rigid connecting structure for the tail platform of the hydropower station has the advantages of being simple in process, convenient to construct and high in structural integrity.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy and hydropower engineering technology, specifically relating to the rigid connection structure of the tailrace platform of a hydropower station. Background Technology

[0002] The tailrace platform of a hydroelectric power station is high and heavy, bearing significant loads such as those from gantry cranes, making construction challenging. If cast-in-place methods are used, supports must be erected from the tailrace bottom slab to the tailrace platform; these supports are high, making construction difficult and time-consuming. Using precast beam structures eliminates the need for formwork supports, reducing construction difficulty and improving efficiency. Conventional precast beams are often hinged to the tailrace gate piers; however, hinged materials and processes are relatively complex and costly. Precast beam types are mostly rectangular or T-shaped. Rectangular beams are heavy and difficult to hoist, while T-shaped beams, due to their structural characteristics, are prone to tilting or toppling during transportation and hoisting, exhibiting poor stability and adding to construction difficulties. Utility Model Content

[0003] The purpose of this utility model is to provide a rigid connection structure for the tailrace platform of a hydropower station, which features simple process, convenient construction and high structural integrity.

[0004] The technical solution adopted by this utility model is a rigid connection structure for the tailrace platform of a hydropower station, wherein a tailrace platform plate is rigidly connected to the tailrace gate pier.

[0005] The tailrace platform slab includes several π-shaped beams, which are erected side by side on the tailrace gate piers; a first concrete layer is poured on the flange plates of the several π-shaped beams; a second concrete layer is poured on both sides of the π-shaped cross section of the several π-shaped beams, and the first concrete layer and the second concrete layer are connected as a whole.

[0006] The features of this utility model also include:

[0007] The π-shaped beam has several reinforcing bars inside its ribs and flanges; the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam is greater than the length of the π-shaped beam, and the excess part of the reinforcing bars is anchored in the second concrete layer.

[0008] Several drainage pipes are vertically installed through the ribs on both sides of the π-shaped beam; the drainage pipes are evenly spaced along the length of the π-shaped beam.

[0009] The top of the drainage pipe is higher than the top of the π-shaped beam, and the excess portion is equal to the thickness of the first concrete layer; the bottom of the drainage pipe extends beyond the bottom of the π-shaped beam.

[0010] Steel plates and several first tie rods are pre-embedded at the bottom of the two side beam ribs of the π-shaped beam, and the first tie rods are welded to the steel plates.

[0011] The first tie rod is shaped like a door, and its two free ends are hook-shaped. The two free ends of the first tie rod are embedded in the beam rib of the π-shaped beam.

[0012] Angle steel and a second tie rod are pre-embedded at the top of the tailrace gate pier, and the angle steel is welded to the second tie rod.

[0013] The second tie rod is arrow-shaped, with the arrowhead part welded to the angle steel, and the two free ends of the second tie rod are hook-shaped; the two free ends of the second tie rod are embedded inside the tailrace gate pier.

[0014] Angle steel is welded to steel plate.

[0015] The beneficial effects of this utility model are:

[0016] This utility model relates to a rigid connection structure for the tailrace platform of a hydropower station. The precast beams are π-shaped beams, which reduce self-weight and on-site hoisting difficulty compared to full-section rectangular beams. Compared to conventional T-beams, they are less prone to tilting or overturning during transportation and hoisting, exhibiting relatively better stability. The entire tailrace platform utilizes a rigid connection structure, resulting in simple technology, convenient construction, and high overall structural integrity. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the rigid connection structure of the tailrace platform of the hydropower station according to this utility model;

[0018] Figure 2 This is a cross-sectional view of the rigid connection structure of the tailrace platform of the hydropower station according to this utility model;

[0019] Figure 3 This is a schematic diagram of the π-shaped beam embedded steel plate and the first tie rod structure of the rigid connection structure of the tailrace platform of the hydropower station of this utility model;

[0020] Figure 4 This is a schematic diagram of the first tie rod structure of the rigid connection structure of the tailrace platform of the hydropower station of this utility model;

[0021] Figure 5 This is a schematic diagram of the pre-embedded steel plate and second tie rod structure of the tailrace gate pier of the rigid connection structure of the tailrace platform of the hydropower station of this utility model;

[0022] Figure 6 This is a schematic diagram of the second tie rod of the rigid connection structure of the tailrace platform of the hydropower station of this utility model;

[0023] Figure 7 This is a schematic diagram of the connection structure between the π-shaped beam and the tailrace gate pier of the rigid connection structure of the tailrace platform of the hydropower station according to this utility model.

[0024] In the diagram: 1. Tailgate pier; 2. Tailgate platform slab; 21. π-shaped beam; 22. First concrete layer; 23. Second concrete layer; 4. Drainage pipe; 5. Steel plate; 6. First tie rod; 7. Angle steel; 8. Second tie rod. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] This utility model relates to a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 As shown, the system includes a tailrace gate pier 1, on which a tailrace platform slab 2 is rigidly connected. The tailrace platform slab 2 comprises several π-shaped beams 21, which are erected side-by-side on the tailrace gate pier 1. The beam ribs of adjacent π-shaped beams 21 are spaced apart, with cement mortar poured into the spaces to increase the stability and overall integrity between adjacent π-shaped beams. A first concrete layer 22 is poured onto the flanges of the π-shaped beams 21 after roughening. The first concrete layer 22 should not be too thick, and its thickness is determined according to the project requirements to avoid excessive weight of the overall tailrace platform slab 3. A second concrete layer 23 is poured onto both sides of the π-shaped cross-section of the π-shaped beams 21 after roughening. The first concrete layer 22 and the second concrete layer 23 are connected as a whole. The roughening process enhances the stability of the connection between the first concrete layer 22, the second concrete layer 23, and the π-shaped beams 21.

[0027] The ribs and flanges of the π-shaped beam 21 are equipped with a number of reinforcing bars in accordance with construction requirements and standards; among them, the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam 21 is greater than the length of the π-shaped beam 21, and the excess part of the reinforcing bars is anchored in the second concrete layer 23.

[0028] Several drainage pipes 4 are vertically installed through the ribs on both sides of the π-shaped beam, such as... Figure 2 As shown, several drainage pipes 4 are evenly spaced along the length of the π-shaped beam 21. Rainwater from the tailrace platform is discharged to the lower tailrace channel through the drainage pipes 4. The top of the drainage pipe 4 is higher than the top of the π-shaped beam 21, and the protruding part is equal to the thickness of the first concrete layer 22; the bottom of the drainage pipe 4 extends beyond the bottom of the π-shaped beam 21. The drainage pipes are generally made of PVC pipe.

[0029] Steel plates 5 and several first tie rods 6 are pre-embedded at the bottom of the two side beam ribs of the π-shaped beam 21, such as... Figure 3 As shown, steel plate 5 is grade Q235, and the first tie rod 6 has a diameter of 16mm and a single length of 106cm. The first tie rod 6 is welded to steel plate 5. The first tie rod 6 is shaped like a door, as shown... Figure 4 As shown, the two free ends of the first tie rod 6 are hook-shaped and are embedded in the beam rib of the π-shaped beam 21.

[0030] Angle steel 7 and a second tie rod 8 are pre-embedded at the top of tailrace gate pier 1, such as Figure 5 As shown, angle steel 7 is grade Q235, and the second tie rod 8 has a diameter of 12mm and a single length of 120cm. Angle steel 7 is welded to the second tie rod 8. The second tie rod 8 is arrow-shaped, as shown... Figure 6 As shown, the shape is adapted to the angle steel 7. The arrowhead portion of the second tie rod 8 is welded to the angle steel 7, and the two free ends of the second tie rod 8 are hook-shaped; the two free ends of the second tie rod 8 are embedded inside the tailrace gate pier 1. In particular, the length of the angle steel 7 located at the interval of the beam ribs of adjacent π-shaped beams is slightly longer than the length of the angle steel 7 at both ends of the tailrace gate pier 1, which facilitates the connection and fixation of two adjacent π-shaped beams 21.

[0031] The angle steel 7 on the tailrace pier 1 is welded to the pre-embedded steel plate 5 at the bottom of the π-shaped beam rib plate, such as... Figure 1 and Figure 5 , Figure 7 As shown, this ensures the integrity and stability of the entire rigid connection structure.

[0032] In summary, the rigid connection structure of the tailrace platform of this utility model is characterized by the following three aspects: the precast π-shaped beam 21 and the tailrace gate pier 1 are connected by welding of angle steel 7 and steel plate 5; the steel bars in the precast π-shaped beam 21 and the roughening treatment of the π-shaped section are fixed to the second concrete layer 23; and the roughening treatment of the top of the precast π-shaped beam 21 is fixed to the first concrete layer 22, thus forming a rigid integral structure. The process is simple and the construction is convenient.

[0033] The installation process of this utility model's rigid connection structure for the tailrace platform of a hydropower station is as follows:

[0034] First, the elevation of the bottom slab of the tailrace gate pier 1 to the π-shaped beam 21 is poured. Angle steel 7 and second tie bars 8 are pre-embedded before concrete pouring. Precast π-shaped beams are pre-fabricated. During fabrication, according to construction standards, several reinforcing bars are pre-embedded in the side ribs and top flange of the π-shaped beam. Horizontal reinforcing bars are pre-embedded along the length of the π-shaped beam 21, extending beyond both ends. Drainage pipes 4, bottom steel plates 5, and the first tie bar 6 are pre-embedded. The outer π-shaped section and top surface of the precast π-shaped beam are roughened before hoisting and installation. The precast π-shaped beam is hoisted to the top of the tailrace gate pier 1, and steel plates 5 and angle steel 7 are welded to fix the π-shaped beam to the tailrace gate pier 1. Each π-shaped beam is spaced 2cm apart, and cement mortar is poured to fill the gaps. Finally, a second concrete layer 23 is poured on both sides of the π-shaped section of the precast π-shaped beam, and a first concrete layer 22 is poured on top. The first concrete layer 22 at the top is flush with the drainage pipe 4 at the top of the protruding π-shaped beam, which facilitates the entry of rainwater from the tailwater platform into the drain and into the lower tailwater channel, thus completing the overall rigid connection structure of the tailwater platform.

[0035] Example 1

[0036] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0037] The tailrace platform slab 2 includes several π-shaped beams 21, which are erected side by side on the tailrace gate pier 1. The beam ribs of adjacent π-shaped beams 21 are spaced apart, and cement mortar is poured into the spaced intervals. A first concrete layer 22 is poured on the flange plate of the several π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped section of the several π-shaped beams 21. The first concrete layer 22 and the second concrete layer 23 are connected as a whole.

[0038] Example 2

[0039] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 and Figure 2 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0040] The tailrace platform slab 2 includes two π-shaped beams 21, each 0.7m high, 1.205m wide, and 6.9m long, with an upper flange plate thickness of 0.2m and side rib plates thickness of 0.35m. The two π-shaped beams 21 are erected side-by-side on the tailrace gate pier 1, with a connection length of 40cm between each π-shaped beam 21 and the tailrace gate pier 1. The rib plates of adjacent π-shaped beams 21 are spaced 2cm apart, with cement mortar poured within the space. A first concrete layer 22, 30cm thick, is poured onto the flange plates of the two π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped cross-section of the two π-shaped beams 21, and the first concrete layer 22 and the second concrete layer 23 are connected as a single unit.

[0041] Example 3

[0042] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 and Figure 2 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0043] The tailrace platform slab 2 includes two π-shaped beams 21, each 0.7m high, 1.205m wide, and 6.9m long, with an upper flange plate thickness of 0.2m and side rib plates thickness of 0.35m. The two π-shaped beams 21 are erected side-by-side on the tailrace gate pier 1, with a connection length of 40cm between each π-shaped beam 21 and the tailrace gate pier 1. The rib plates of adjacent π-shaped beams 21 are spaced 2cm apart, with cement mortar poured within the space. A first concrete layer 22, 30cm thick, is poured onto the flange plates of the two π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped cross-section of the two π-shaped beams 21, and the first concrete layer 22 and the second concrete layer 23 are connected as a single unit.

[0044] The ribs and flanges of the π-shaped beam 21 are equipped with a number of reinforcing bars in accordance with construction requirements and standards; among them, the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam 21 is greater than the length of the π-shaped beam 21, and the excess part of the reinforcing bars is anchored in the second concrete layer 23.

[0045] Two drainage pipes 4 are vertically installed through the ribs on both sides of the π-shaped beam 21; the drainage pipes 4 are evenly spaced along the length of the π-shaped beam 21. The top of the drainage pipe 4 is 30cm higher than the top of the π-shaped beam 21, and its protruding part is equal to the thickness of the tailrace platform plate 3; the bottom of the drainage pipe 4 extends 10cm beyond the bottom of the π-shaped beam 21. The diameter of the drainage pipe is 50mm, and the length of a single pipe is 110cm. The drainage pipe is made of PVC pipe.

[0046] Example 4

[0047] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 and Figure 2 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0048] The tailrace platform slab 2 includes two π-shaped beams 21, each 0.7m high, 1.205m wide, and 6.9m long, with an upper flange plate thickness of 0.2m and side rib plates thickness of 0.35m. The two π-shaped beams 21 are erected side-by-side on the tailrace gate pier 1, with a connection length of 40cm between each π-shaped beam 21 and the tailrace gate pier 1. The rib plates of adjacent π-shaped beams 21 are spaced 2cm apart, with cement mortar poured within the space. A first concrete layer 22, 30cm thick, is poured onto the flange plates of the two π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped cross-section of the two π-shaped beams 21, and the first concrete layer 22 and the second concrete layer 23 are connected as a single unit.

[0049] The ribs and flanges of the π-shaped beam 21 are equipped with a number of reinforcing bars in accordance with construction requirements and standards; among them, the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam 21 is greater than the length of the π-shaped beam 21, and the excess part of the reinforcing bars is anchored in the second concrete layer 23.

[0050] Two drainage pipes 4 are vertically installed through the ribs on both sides of the π-shaped beam 21; the drainage pipes 4 are evenly spaced along the length of the π-shaped beam 21. The top of the drainage pipe 4 is 30cm higher than the top of the π-shaped beam 21, and its protruding part is equal to the thickness of the tailrace platform plate 3; the bottom of the drainage pipe 4 extends 10cm beyond the bottom of the π-shaped beam 21. The diameter of the drainage pipe is 50mm, and the length of a single pipe is 110cm. The drainage pipe is made of PVC pipe.

[0051] Steel plates 5 and several first tie rods 6 are pre-embedded at the bottom of the side beam ribs of the π-shaped beam 21. The first tie rods 6 are welded to the steel plates 5. The steel plates 5 are of Q235 grade and have dimensions of 200 mm × 350 mm × 10 mm; the first tie rods 6 have a diameter of 16 mm and a single length of 106 cm. Figure 3 , Figure 4 As shown. The first tie rod 6 is shaped like a door, and the two free ends of the first tie rod 6 are hook-shaped. The two free ends of the first tie rod 6 are embedded in the beam rib of the π-shaped beam 21.

[0052] Example 5

[0053] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 and Figure 2 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0054] The tailrace platform slab 2 includes two π-shaped beams 21, each 0.7m high, 1.205m wide, and 6.9m long, with an upper flange plate thickness of 0.2m and side rib plates thickness of 0.35m. The two π-shaped beams 21 are erected side-by-side on the tailrace gate pier 1, with a connection length of 40cm between each π-shaped beam 21 and the tailrace gate pier 1. The rib plates of adjacent π-shaped beams 21 are spaced 2cm apart, with cement mortar poured within the space. A first concrete layer 22, 30cm thick, is poured onto the flange plates of the two π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped cross-section of the two π-shaped beams 21, and the first concrete layer 22 and the second concrete layer 23 are connected as a single unit.

[0055] The ribs and flanges of the π-shaped beam 21 are equipped with a number of reinforcing bars in accordance with construction requirements and standards; among them, the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam 21 is greater than the length of the π-shaped beam 21, and the excess part of the reinforcing bars is anchored in the second concrete layer 23.

[0056] Two drainage pipes 4 are vertically installed through the ribs on both sides of the π-shaped beam 21; the drainage pipes 4 are evenly spaced along the length of the π-shaped beam 21. The top of the drainage pipe 4 is 30cm higher than the top of the π-shaped beam 21, and its protruding part is equal to the thickness of the tailrace platform plate 3; the bottom of the drainage pipe 4 extends 10cm beyond the bottom of the π-shaped beam 21. The diameter of the drainage pipe is 50mm, and the length of a single pipe is 110cm. The drainage pipe is made of PVC pipe.

[0057] Steel plates 5 and several first tie rods 6 are pre-embedded at the bottom of the side beam ribs of the π-shaped beam 21. The first tie rods 6 are welded to the steel plates 5. The steel plates 5 are of Q235 grade and have dimensions of 200 mm × 350 mm × 10 mm; the first tie rods 6 have a diameter of 16 mm and a single length of 106 cm. Figure 3 , Figure 4 As shown. The first tie rod 6 is shaped like a door, and the two free ends of the first tie rod 6 are hook-shaped. The two free ends of the first tie rod 6 are embedded in the beam rib of the π-shaped beam 21.

[0058] Angle steel 7 and a second tie rod 8 are pre-embedded at the top of the tailrace gate pier 1, and the angle steel 7 is welded to the second tie rod 8. The angle steel 7 is of Q235 grade and has dimensions of 100mm×100mm×10mm; the second tie rod 8 has a diameter of 12mm and a single length of 120cm. Figure 5 and Figure 6 As shown, the second tie rod 8 is arrow-shaped, the arrowhead part of the second tie rod 8 is welded to the angle steel 7, and the two free ends of the second tie rod 8 are hook-shaped; the two free ends of the second tie rod 8 are embedded in the tailrace gate pier 1.

[0059] Example 6

[0060] This embodiment provides a rigid connection structure for the tailrace platform of a hydropower station, such as... Figure 1 and Figure 2 As shown, a tailrace platform plate 2 is rigidly connected to the tailrace gate pier 1;

[0061] The tailrace platform slab 2 includes two π-shaped beams 21, each 0.7m high, 1.205m wide, and 6.9m long, with an upper flange plate thickness of 0.2m and side rib plates thickness of 0.35m. The two π-shaped beams 21 are erected side-by-side on the tailrace gate pier 1, with a connection length of 40cm between each π-shaped beam 21 and the tailrace gate pier 1. The rib plates of adjacent π-shaped beams 21 are spaced 2cm apart, with cement mortar poured within the space. A first concrete layer 22, 30cm thick, is poured onto the flange plates of the two π-shaped beams 21. A second concrete layer 23 is poured on both sides of the π-shaped cross-section of the two π-shaped beams 21, and the first concrete layer 22 and the second concrete layer 23 are connected as a single unit.

[0062] The ribs and flanges of the π-shaped beam 21 are equipped with a number of reinforcing bars in accordance with construction requirements and standards; among them, the length of the horizontally arranged reinforcing bars along the length of the π-shaped beam 21 is greater than the length of the π-shaped beam 21, and the excess part of the reinforcing bars is anchored in the second concrete layer 23.

[0063] Two drainage pipes 4 are vertically installed through the ribs on both sides of the π-shaped beam 21; the drainage pipes 4 are evenly spaced along the length of the π-shaped beam 21. The top of the drainage pipe 4 is 30cm higher than the top of the π-shaped beam 21, and its protruding part is equal to the thickness of the tailrace platform plate 3; the bottom of the drainage pipe 4 extends 10cm beyond the bottom of the π-shaped beam 21. The diameter of the drainage pipe is 50mm, and the length of a single pipe is 110cm. The drainage pipe is made of PVC pipe.

[0064] Steel plates 5 and several first tie rods 6 are pre-embedded at the bottom of the side beam ribs of the π-shaped beam 21. The first tie rods 6 are welded to the steel plates 5. The steel plates 5 are of Q235 grade and have dimensions of 200 mm × 350 mm × 10 mm; the first tie rods 6 have a diameter of 16 mm and a single length of 106 cm. Figure 3 , Figure 4 As shown. The first tie rod 6 is shaped like a door, and the two free ends of the first tie rod 6 are hook-shaped. The two free ends of the first tie rod 6 are embedded in the beam rib of the π-shaped beam 21.

[0065] Angle steel 7 and a second tie rod 8 are pre-embedded at the top of the tailrace gate pier 1, and the angle steel 7 is welded to the second tie rod 8. The angle steel 7 is of Q235 grade and has dimensions of 100mm×100mm×10mm; the second tie rod 8 has a diameter of 12mm and a single length of 120cm. Figure 5 and Figure 6 As shown, the second tie rod 8 is arrow-shaped, with the arrowhead portion welded to the angle steel 7. The two free ends of the second tie rod 8 are hook-shaped; the two free ends of the second tie rod 8 are embedded inside the tailrace gate pier 1. The angle steel 7 is welded to the steel plate 5, as shown... Figure 5 As shown, the 100mm side of angle steel 7 is welded to half of the 200mm side of steel plate 5.

[0066] This utility model relates to a rigid connection structure for the tailrace platform of a hydropower station, which features simple technology, convenient construction, and high structural integrity.

Claims

1. A rigid connection structure for the tailrace platform of a hydropower station, including a tailrace gate pier (1), characterized in that, The tailrace gate pier (1) is rigidly connected to the tailrace platform plate (2); The tailrace platform slab (2) includes several π-shaped beams (21), which are erected side by side on the tailrace gate pier (1). The beam ribs of adjacent π-shaped beams (21) are spaced apart, and cement mortar is poured in the space. A first concrete layer (22) is poured on the flange of several π-shaped beams (21). A second concrete layer (23) is poured on both sides of the π-shaped section of several π-shaped beams (21). The first concrete layer (22) and the second concrete layer (23) are connected as a whole.

2. The rigid connection structure for the tailrace platform of a hydropower station according to claim 1, characterized in that, The π-shaped beam (21) has several reinforcing bars in its ribs and flanges; the length of the reinforcing bars horizontally arranged along the length of the π-shaped beam (21) is greater than the length of the π-shaped beam (21), and the excess part of the reinforcing bars is anchored in the second concrete layer (23).

3. The rigid connection structure for the tailrace platform of a hydropower station according to claim 1, characterized in that, Several drainage pipes (4) are vertically installed in the two side beam ribs of the π-shaped beam (21); the drainage pipes (4) are evenly spaced along the thickness direction of the π-shaped beam (21).

4. The rigid connection structure for the tailrace platform of a hydropower station according to claim 3, characterized in that, The top of the drain pipe (4) is higher than the top of the π-shaped beam (21), and the part of the pipe that protrudes is equal to the thickness of the first concrete layer (22); the bottom of the drain pipe (4) extends beyond the bottom of the π-shaped beam (21).

5. The rigid connection structure for the tailrace platform of a hydropower station according to claim 1, characterized in that, The bottom of the two side beam ribs of the π-shaped beam (21) is pre-embedded with steel plates (5) and several first tie rods (6), and the first tie rods (6) are welded to the steel plates (5).

6. The rigid connection structure for the tailrace platform of a hydropower station according to claim 5, characterized in that, The first tie rod (6) is in the shape of a door, and the two free ends of the first tie rod (6) are in the shape of hooks. The two free ends of the first tie rod (6) are embedded in the beam rib of the π-shaped beam (21).

7. The rigid connection structure for the tailrace platform of a hydropower station according to claim 5, characterized in that, Angle steel (7) and a second tie rod (8) are pre-embedded on the top of the tailrace gate pier (1), and the angle steel (7) is welded to the second tie rod (8).

8. The rigid connection structure for the tailrace platform of a hydropower station according to claim 7, characterized in that, The second tie rod (8) is arrow-shaped, and the arrow part of the second tie rod (8) is welded to the angle steel (7). The two free ends of the second tie rod (8) are hook-shaped. The two free ends of the second tie rod (8) are embedded in the tailrace gate pier (1).

9. The rigid connection structure for the tailrace platform of a hydropower station according to claim 8, characterized in that, The angle steel (7) is welded to the steel plate (5).

Images