Water conservancy project pump station and construction method thereof

Abstract

The present application discloses a water conservancy project pump station and its construction method, belonging to the field of water conservancy engineering technology. The water conservancy project pump station includes a bottom plate, a wall supported on the bottom plate, and a top plate covering the top of the wall; the wall includes a first unit and a second unit connected in an assembled manner, and a water inlet is opened in the middle of the second unit; the second unit has side part 1, side part 2, and a middle part connected between side part 1 and side part 2, and the water inlet is located between side part 1, side part 2, and the middle part; a casting cavity is opened inside the middle part, and the end faces of side part 1 and side part 2 are reserved with splicing bars, which can be inserted into the casting cavity; and the casting cavity is filled with concrete casting blocks. Through this application, the problem of easy damage to the water inlet position of the assembled wall in the prior art is solved.

Description

Technical Field

[0001] The present application relates to a water conservancy project pump station and a construction method thereof, belonging to the technical field of water conservancy projects. Background Art

[0002] A water conservancy project pump station is a structure used to take in or drain water. It is divided into irrigation pump stations, drainage pump stations, water supply pump stations and other types according to its function.

[0003] A hydraulic pump station is a chamber composed of a base, walls, and roof, with a water inlet located on one wall. Various pumps and pipes are installed within the chamber to pump water from the inlet to the desired height and location.

[0004] At present, water conservancy project pump stations are usually constructed on-site using cast-in-place concrete. The construction process includes: S1 foundation construction, excavating a foundation pit and driving piles into the bottom of the foundation pit, tying steel bars at the bottom of the foundation pit and pouring concrete to form a bottom plate; S2, wall construction, supporting formwork around the bottom plate, lowering a steel cage in the space formed by the formwork and the bottom plate, and then pouring concrete to form the wall; when constructing a wall that requires a water inlet, a steel casing is passed through the formwork so that the water inlet is reserved at the position of the steel casing; S3, top plate construction, building a scaffolding on the bottom plate to support the bottom formwork, supporting side formwork around the bottom formwork, tying steel bars and pouring concrete in the space formed by the bottom formwork and the side formwork to form the top plate.

[0005] Since the bottom plate, wall and top plate of the water conservancy project pump station need to be cast and maintained in sequence, a longer construction period needs to be reserved, which is not conducive to the rapid use of the water conservancy project pump station.

[0006] A Chinese patent application with publication number CN105019653A discloses a method for constructing a prefabricated, assembled concrete underflow pump station. The method includes: processing and manufacturing prefabricated concrete wall panels in a factory, embedding pre-designed embedded parts and hooks in the concrete; after excavating the foundation pit on site, pouring and constructing the first layer of the reinforced concrete circular raft foundation of the underflow pump station, and reserving dowel bars and positioning steel bars of sufficient vertical length according to the design drawings; installing the prefabricated concrete wall panels in place to form a cylindrical wall; using a grouting material that foams and expands after high-pressure grouting to seal and prevent seepage at the joints between the wall panels; pouring and constructing the second layer of the circular raft foundation of the underflow pump station; after the circular raft foundation of the underflow pump station is completed, setting up scaffolding to pour the reinforced concrete circular top plate on the top of the pump station; and after the underflow pump station is completed, backfilling the earth around the pump station and performing backfill compaction.

[0007] The above solution solves the problem of long on-site pouring construction period. However, since a water inlet is opened on one side of the wall, after the wall is prefabricated, the transportation and installation processes will cause structural stress concentration around the water inlet and cause damage. Therefore, it is necessary to provide a water conservancy project pump station that can solve this problem. Summary of the Invention

[0008] The technical problem to be solved by the present application is to provide a water conservancy project pump station and a construction method thereof, which solves the problem in the prior art that the water inlet position of the assembled wall is easily damaged.

[0009] The technical problem to be solved by this application is achieved by adopting the following technical solutions:

[0010] A water conservancy project pump station includes a bottom plate, a wall supported on the bottom plate, and a top plate covering the top of the wall; the wall includes a first unit and a second unit connected in an assembled manner, and a water inlet is opened in the middle of the second unit;

[0011] The second unit comprises side portion 1, side portion 2 and a middle portion connected between side portion 1 and side portion 2, and the water inlet is located between side portion 1, side portion 2 and the middle portion;

[0012] A casting cavity is provided inside the middle portion, and splicing bars are reserved on the end faces of the first side and the second side, and the splicing bars can be inserted into the casting cavity; and the casting cavity is filled with concrete casting blocks.

[0013] Furthermore: the water inlet decomposes the middle part into an upper middle plate and a lower middle plate, and the curvatures on both sides of the water inlet are respectively located at the side part 1 and the side part 2;

[0014] A steel plate positioning ring is provided on the inner wall of the water inlet, and limiting ring plates are provided at both ends of the steel plate positioning ring. The areas of edge one, edge two, the upper middle plate and the lower middle plate corresponding to the water inlet are all sandwiched between the two limiting ring plates.

[0015] By adopting this technical solution, the wall near the water inlet is divided into Section 1, Section 2, and the middle section, dividing the circumference of the water inlet into four parts. This reduces the probability of stress concentration and damage to the inner wall of the water inlet during transportation and assembly. Furthermore, assembling the wall near the water inlet facilitates positioning and speeds up construction.

[0016] Using steel plate positioning rings to position the upper and lower middle plates can not only speed up the positioning of various components during construction, but also improve the structural strength of the water inlet area after construction is completed.

[0017] Furthermore: the middle part includes two vertical plates parallel to each other and two ribs arranged between the two vertical plates, a gap is formed between the ribs and the ends of the vertical plates, and the ends of the side part 1 and the side part 2 are both inserted between the two vertical plates.

[0018] Furthermore: the rib plate is provided with a plurality of vertical plug-in ports, the plug-in ports are waist-shaped, and the plug-in ribs can be inserted into the plug-in ports.

[0019] By adopting the above technical solution, a gap is formed between the ends of the ribs and the vertical plates, which can better limit and fix the side portion 1 and the side portion 2, thereby enhancing the integrity of the second unit.

[0020] The insertion joints allow for vertical movement of the reinforcement bars, facilitating faster assembly of Sides 1 and 2 with the center section. Furthermore, during concrete pouring, mortar can flow through the insertion joints between Side 1 and the ribs, and between Side 2 and the ribs, further enhancing the structural strength of Sides 1, 2, and the center section.

[0021] Furthermore: a groove body is embedded in the bottom plate, the groove opening of the groove body is located inside the bottom plate, and the top of the groove body extends to the outside of the bottom plate; at least the middle area of the second unit is inserted into the groove body.

[0022] Furthermore: a limiting groove is provided on the bottom plate, and the bottom of the first unit is inserted into the limiting groove.

[0023] Furthermore: the trough body is located at the bottom of one side of the wall where the water inlet is opened, the rest of the bottom of the wall is inserted into the limit groove, and both sides around the bottom of the wall are filled with mortar fixing blocks, and the top of the mortar fixing block exceeds the top of the trough body.

[0024] By adopting the above technical solution, the connection strength between the wall and the bottom plate is improved.

[0025] The present application also provides a construction method for a water conservancy project pump station, comprising the following steps:

[0026] S1, foundation construction, pouring the base plate;

[0027] S2, wall construction, hoist the first unit and fix it to the bottom plate; hoist the middle part to the designed position, hoist and move the side 1 and side 2 until the splicing reinforcement of the side 1 and side 2 is inserted into the casting cavity, and pour concrete in the casting cavity; perform assembly-type fixation on the side 1, side 2 and the unit;

[0028] S3, top plate construction, lifting the top plate to the top of the wall and fixing it.

[0029] By adopting the above technical solution, rapid installation of the wall is achieved.

[0030] The beneficial effects of the present application are: 1. The wall is decomposed into section one, section two and the middle section at the location of the water inlet, thereby reducing the probability of damage caused by stress concentration at the water inlet; 2. The middle section includes an upper middle plate and a lower middle plate, which are assembled and fixed using plug-in interfaces and plug-in reinforcements, which not only ensures strength but also improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a top view of the structure of an embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the main structure of an embodiment of the present application;

[0033] Figure 3 yes Figure 2 AA cross-section of

[0034] Figure 4 yes Figure 3 A magnified view of the structure of part B;

[0035] Figure 5 yes Figure 2 CC cross-section diagram;

[0036] Figure 6 This is a schematic diagram of the decomposed structure of the connection position between side one, side two and the middle.

[0037] In the figure: 1. Pile foundation; 2. Cushion layer; 3. Bottom plate; 31. Limiting groove; 32. Trough body; 33. Mortar fixing block; 4. Wall; 41. First unit; 411. Division one; 412. Division two; 42. Second unit; 420. Water inlet; 421. Side one; 422. Side two; 423. Middle part; 4231. Upper middle plate; 4232. Lower middle plate; 5. Splicing structure; 51. Steel plate column; 52. Filling concrete block; 6. Steel plate positioning ring; 61. Limiting ring plate; 7. Vertical plate; 8. Rib plate; 81. Plug interface; 9. Casting cavity; 91. Concrete casting block; 10. Plug-in reinforcement. Implementation Method

[0038] In order to make the technical means, creative features, objectives and effects of this application easier to understand, this application is further explained below with reference to specific diagrams.

[0039] like Figure 1-2 As shown, the embodiment of the present application discloses a water conservancy project pump station, which includes a pile foundation 1, a bottom plate 3 located above the pile foundation 1, a wall 4 supported on the bottom plate 3, and a top plate covering the top of the wall 4. A cushion layer 2 is provided between the bottom plate 3 and the pile foundation 1, and the steel bars of the pile foundation 1 and the steel cage of the bottom plate 3 are overlapped and fixed to form a whole.

[0040] The wall body 4 is composed of a first unit 41 and a second unit 42. The first unit 41 includes a first part 411 and a second part 412 in an L shape. After the combination of the first part 411 and the second part 412, a U-shaped structure is formed. A water inlet 420 is provided at the middle part 423 of the second unit 42. The second unit 42 includes a first side part 421, a second side part 422, and a middle part 423 arranged between the first side part 421 and the second side part 422. A splicing structure 5 is provided between the first part 411 and the second part 412, between the first part 411 and the first side part 421, and between the second part 412 and the second side part 422. The splicing structure 5 includes a steel plate column 51 and a filled concrete block 52. The steel plate column 51 is selected as an H-shaped steel. The ends of the precast structures on both sides of the steel plate column 51 are inserted between the two flange plates of the H-shaped steel. The filled concrete block 52 is located on both sides of the web of the steel plate column 51.

[0041] A groove body 32 is embedded at the position corresponding to the middle part 423 on the bottom plate 3. Limiting grooves 31 are provided in other areas corresponding to the bottoms of the first unit 41 and the second unit 42 on the bottom plate 3. The bottom of the limiting groove 31 is flush with the groove bottom of the groove body 32.

[0042] Combined Figure 3 and Figure 4 , the groove body 32 is selected as a channel steel. The sides of the first side part 421 and the second side part 422 adjacent to the middle part 423 are inserted into the inside of the groove body 32. The bottom of the groove body 32 is located inside the bottom plate 3 and is welded as a whole with the steel reinforcement cage in the bottom plate 3. The top of the groove body 32 extends above the bottom plate 3. The inner width of the groove of the groove body 32 is greater than the thickness of the middle part 423, and the length difference is 2 - 5 cm. Mortar fixing blocks 33 are filled on both sides of the groove body 32 and the limiting grooves 31 (see Figure 1 ). The top of the mortar fixing block 33 exceeds the top of the groove body 32, and the mortar fixing block 33 fills the gaps between the groove body 32 and the middle part 423, between the groove body 32 and the first part 411, and between the groove body 32 and the second part 412.

[0043] Combined Figure 2 and Figure 5 , the middle part 423 is composed of an upper middle plate 4231 and a lower middle plate 4232. The water inlet 420 is located among the first side part 421, the second side part 422, the upper middle plate 4231, and the lower middle plate 4232. The radian of the bottom of the upper middle plate 4231 and the top of the lower middle plate 4232 is both π / 3, and the radian of the sides of the first side part 421 and the second side part 422 is both 2π / 3. A steel plate positioning ring 6 is provided at the position of the water inlet 420. Limiting ring plates 61 are provided at both ends of the steel plate positioning ring 6. The areas of the first side part 421, the second side part 422, the upper middle plate 4231, and the lower middle plate 4232 corresponding to the water inlet 420 are clamped between the two limiting ring plates 61.

[0044] The upper middle plate 4231 and the lower middle plate 4232 have the same structure. For example, the upper middle plate 4231 includes two parallel vertical plates 7 and two ribs 8 disposed between the two vertical plates 7. The vertical plates 7 and the ribs 8 surround a casting cavity 9. The two ribs 8 are parallel to each other and disposed adjacent to the ends of the vertical plates 7. A gap of 200-500 mm is formed between the ribs 8 and the ends of the vertical plates 7.

[0045] Combine Figure 5 and Figure 6 The rib 8 is vertically provided with a plurality of equally spaced insertion openings 81, each shaped like a waist. The end surfaces of the first and second side portions 421, 422 are provided with insertion ribs 10, which can be inserted into the insertion openings 81 to allow the end surfaces of the first and second side portions 421, 422 to fit closely with the rib 8.

[0046] The casting cavity 9 is filled with a concrete casting block 91 , and the splicing reinforcement 10 and the concrete casting block 91 are mechanically engaged with each other.

[0047] Combine Figure 1-6 , the construction method of water conservancy project pump station is as follows:

[0048] S1, foundation construction;

[0049] The foundation pit bottom is leveled and laid out, and precast piles are driven into the laid-out locations to form pile foundation 1. Mortar is laid atop pile foundation 1, which solidifies to form a cushion layer 2. The rebar at the top of pile foundation 1 passes through cushion layer 2. Rebar is tied atop cushion layer 2 to form a reinforcement frame, and formwork is supported around the frame. A trough 32 is placed at the designed location on the frame, and the frame and trough 32 are welded together.

[0050] Take a trough-shaped PVC pipe and spray its outer surface with mold release agent. Place the trough-shaped PVC pipe in the other area of the steel frame corresponding to the bottom of the first unit 41 and the second unit 42, with the ends of the trough-shaped PVC pipe aligned with the ends of the trough body 32. Place stones in the notch of the trough-shaped PVC pipe to position it. Tie a rope to the trough-shaped PVC pipe and connect the rope to the crane.

[0051] Concrete is poured inside the formwork. After the concrete initially sets, a crane is activated to lift the trough-shaped PVC pipe, freeing it from the concrete. After the concrete finally sets, a base plate 3 is formed, with its upper surface positioned below the trough 32. Retaining grooves 31 are formed on the base plate 3 corresponding to the positions of the trough-shaped PVC pipe.

[0052] S2, construction of wall 4;

[0053] The base plate 3 is laid out to determine the position of the steel plate column 51 between section 1 411 and section 2 412 and to lift the steel plate column 51 and insert it into the limiting groove 31 at the corresponding position. The bottom of the steel plate column 51 is fixed to the bottom of the limiting groove 31 using steel plates and expansion bolts.

[0054] Lift section 1 411 and section 2 412 so that both ends of section 1 411 and section 2 412 are respectively inserted into both sides of the web of the steel plate column 51 , and pour concrete in the space between the web and section 1 411 and section 2 412 on both sides thereof, and wait for it to solidify to form a filling concrete block 52 .

[0055] Lift the lower middle plate 4232 to the designed position, weld the bottom of the lower middle plate 4232 and the bottom of the trough body 32, and fix the position of the lower middle plate 4232. Lift the steel plate positioning ring 6 to the top of the lower middle plate 4232. At the same time, lift the top and middle part 423 of the upper middle plate 4231 to the top of the steel plate positioning ring 6, and loosen the lifting point of the middle part 423 of the upper middle plate 4231 until the upper middle plate 4231 is in a vertical state. Pour concrete into the casting cavity 9 of the lower middle plate 4232, and lower the steel plate positioning ring 6 so that the outer wall of the steel plate positioning ring 6 and the top of the lower middle plate 4232 are tightly pressed. Slowly move the upper middle plate 4231 so that it is facing the steel plate positioning ring 6, and slowly lower the upper middle plate 4231 so that its bottom is inserted between the two limiting ring plates 61.

[0056] Lift side 1 421 and side 2 422 so that their bottoms are located inside the trough 32 and above the bottom plate 3. Move subsection 1 411 and subsection 2 412 along the trough 32 so that the splicing bars 10 on subsections 1 411 and 412 are inserted into the corresponding insertion ports 81. At this point, the concrete in the casting cavity 9 of the lower middle plate 4232 has not yet solidified. Pour concrete into the casting cavity 9 of the upper middle plate 4231. After the concrete in the casting cavities 9 of the upper and lower middle plates 4231 and 4232 solidifies, a concrete casting block 91 is formed.

[0057] Lift the other two steel plate columns 51 and insert them between the first section 411 and the first side 421, and between the second section 412 and the second side 422. Use steel plates and expansion bolts to secure the two steel plate columns 51 to the bottom of the limiting groove 31. Pour concrete on both sides of the web of the steel plate columns 51 and wait for the concrete to solidify.

[0058] Mortar is laid around the inner and outer sides of the bottom of the wall 4. The mortar is laid to a height exceeding the top of the trough 32. After the mortar solidifies, mortar fixing blocks 33 are formed. The cross-section of the mortar fixing blocks 33 on both sides of the wall 4 is a right-angled trapezoid.

[0059] S3, roof construction;

[0060] The top plate is lifted to cover the top of the wall 4 , and structural fixing and waterproofing are performed between the bottom of the top plate and the top of the wall 4 .

[0061] The above shows and describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments. Without departing from the spirit and scope of the present application, the present application is subject to various changes and improvements, and such changes and improvements fall within the scope of protection claimed by the present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A water conservancy project pump station, comprising a base plate (3), a wall (4) supported on the base plate (3), and a top plate covering the top of the wall (4); characterized in that: The wall (4) comprises a first unit (41) and a second unit (42) connected in an assembled manner, and a water inlet (420) is provided in the middle (423) of the second unit (42); The second unit (42) comprises a first side portion (421), a second side portion (422), and a middle portion (423) connected between the first side portion (421) and the second side portion (422), and the water inlet (420) is located between the first side portion (421), the second side portion (422), and the middle portion (423); The water inlet (420) decomposes the middle portion (423) into an upper middle plate (4231) and a lower middle plate (4232), and the curvatures on both sides of the water inlet (420) are respectively located at the first side (421) and the second side (422); A casting cavity (9) is provided inside the middle portion (423), and splicing bars (10) are reserved on the end faces of the first side portion (421) and the second side portion (422), and the splicing bars (10) can be inserted into the casting cavity (9); and the casting cavity (9) is filled with a concrete casting block (91).

2. The water conservancy project pump station according to claim 1, characterized in that: A steel plate positioning ring (6) is provided on the inner wall of the water inlet (420), and limiting ring plates (61) are provided at both ends of the steel plate positioning ring (6), and the areas of the edge portion 1 (421), the edge portion 2 (422), the upper middle plate (4231) and the lower middle plate (4232) corresponding to the water inlet (420) are all sandwiched between the two limiting ring plates (61).

3. The water conservancy project pump station according to claim 1, characterized in that: The middle portion (423) includes two mutually parallel vertical plates (7) and two ribs (8) arranged between the two vertical plates (7), a gap is formed between the ribs (8) and the ends of the vertical plates (7), and the ends of the side portion 1 (421) and the side portion 2 (422) are both inserted between the two vertical plates (7).

4. The water conservancy project pump station according to claim 3, characterized in that: The rib plate (8) is provided with a plurality of vertical insertion ports (81), the insertion ports (81) being waist-shaped, and the insertion ribs (10) can be inserted into the insertion ports (81).

5. The water conservancy project pump station according to claim 1, characterized in that: A groove body (32) is embedded in the bottom plate (3), the groove opening of the groove body (32) is located inside the bottom plate (3), and the top of the groove body (32) extends to the outside of the bottom plate (3); at least the middle portion (423) of the second unit (42) is inserted into the groove body (32).

6. The water conservancy project pump station according to claim 5, characterized in that: A limiting groove (31) is also provided on the bottom plate (3), and the bottom of the first unit (41) is inserted into the limiting groove (31).

7. The water conservancy project pump station according to claim 6, characterized in that: The trough body (32) is located at the bottom of one side of the wall body (4) where the water inlet (420) is opened, and the rest of the bottom of the wall body (4) is inserted into the limiting groove (31), and both sides around the bottom of the wall body (4) are filled with mortar fixing blocks (33), and the top of the mortar fixing block (33) exceeds the top of the trough body (32).

8. A method for constructing a water conservancy project pump station according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, foundation construction, pouring the base plate (3); S2, wall (4) construction, lifting the first unit (41) and fixing it on the bottom plate (3); lifting the middle part (423) to the designed position, lifting and moving the side part 1 (421) and the side part 2 (422) until the splicing reinforcement (10) of the side part 1 (421) and the side part 2 (422) are inserted into the casting cavity (9), and pouring concrete in the casting cavity (9); performing assembly-type fixing on the side part 1 (421), the side part 2 (422) and the first unit (41); S3, top plate construction, lifting the top plate to the top of the wall (4) and fixing it.

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