Fabricated reinforced concrete pool and construction method thereof

Abstract

The invention discloses a fabricated reinforced concrete pool and a construction method thereof, and belongs to the technical field of water conservancy and municipal engineering. The pool comprises a force transmission system composed of reinforced concrete T-shaped outer stand columns, hollow baffles, a center stand column and inhaul cables, horizontal thrust on the baffles is converted into opposite tension between the stand columns through the inhaul cables, and a self-balancing anti-overturning system is formed; the outer stand columns and the center stand column disperse loads through the synergistic effect of the supporting rods, the diagonal bracings and the cable ropes in combination with the bearing raft plates. An integrated hydraulic membrane is laid in the pond, a fine sand cushion layer is arranged below the membrane, the top of the membrane is covered with sunscreen waterproof cloth, and water permeable holes are formed in the cloth. The construction method comprises the steps of prefabricating the components, burying the central stand column, assembling the outer stand columns and the baffles, fastening the inhaul cables, laying the waterproof layer and the like. The structure has the advantages of light weight, high strength, modular high-efficiency assembly, adaptability to complex geological conditions, convenience in waterproof maintenance and the like, the construction efficiency is improved by more than 50%, the construction cost is reduced by 30%, and the structure is suitable for high-standard industrial and agricultural water supply and drainage scenes.

Description

Technical Field

[0001] The invention belongs to the technical field of water supply for production and living in water conservancy and municipal engineering, and particularly relates to a prefabricated reinforced concrete water tank and a construction method thereof. Background Art

[0002] Traditional water tank construction technologies such as bricklaying, stone masonry with mortar, and cast-in-place reinforced concrete structures, although having relatively high strength, have defects such as long construction periods, large material consumption, complex foundation treatment, and immobility. In recent years, prefabricated water storage tanks have made breakthroughs in rapid assembly and recyclability due to the use of prefabricated components and flexible waterproof cloths, but their structural designs have significant deficiencies: Firstly, traditional prefabricated water tanks rely on simple splicing and lack an effective horizontal force transmission mechanism, and the lateral thrust of water is likely to cause the pool wall to overturn, especially in deep water level or large volume scenarios, the risk is exacerbated; Secondly, it has strict requirements for the bearing capacity and anti-deformation ability of the foundation, and it is difficult to be applied in soft soil or areas prone to settlement; Thirdly, the proportion of non-standard components is high, and it is difficult to control the modular assembly accuracy, resulting in low prefabrication and assembly efficiency and rising costs; Finally, the waterproof layer is easily damaged, and the overall structure needs to be disassembled for maintenance, and it is difficult to repair hidden works. These problems have severely restricted the popularization of prefabricated water tanks in high-standard scenarios such as industrial and agricultural water supply and drainage. Summary of the Invention

[0003] In order to solve the above problems, the invention proposes a prefabricated reinforced concrete water tank and a construction method thereof, which enhance the structural strength and toughness while maintaining its economy, improve the stability of the prefabricated water tank, and meet the use conditions of places with high safety requirements.

[0004] A prefabricated reinforced concrete water tank, characterized in that: it includes a hydraulic membrane, baffles, columns and cables. The columns include central columns and outer columns. The outer columns are of reinforced concrete structure with a T-shaped cross-section. The outer columns are erected on the raft slab. Insertion holes are provided on both sides of the column feet of the raft slab, and reinforced concrete limit blocks are inserted to limit the rotation and lateral displacement of the outer columns. A number of outer columns are evenly arranged to enclose a water tank with a bilaterally symmetric figure on the plane. The outer columns include arc-section outer columns, straight-section outer columns and corner outer columns. The arc-section outer columns are evenly arranged circumferentially on the arc sections of the pool wall of the bilaterally symmetric figure water tank. Straight-section outer columns are arranged on the straight sections between the arc sections, and corner outer columns are arranged at the joints between the arc sections and the straight sections. A central column is buried at the center of the arc section of the water tank. The burial depth of the central column is greater than 1 / 6 of its total height, and the height of the central column is greater than that of the outer columns. A number of hanging buckles are evenly arranged circumferentially at the top and the part above the ground at the bottom of the central column. The webs of the arc-section outer columns and the corner outer columns all face the central column, and the webs of the straight-section outer columns are all perpendicular to the axis of symmetry. The top and bottom of adjacent outer columns are respectively connected by struts in a butt-joint manner, and struts are connected between the outer sides of adjacent outer columns to form a scissors brace. The top of the straight-section outer column is connected to an anchor seat arranged outside the pool wall through a guy wire; The baffle is a reinforced concrete hollow slab, including a straight-section baffle and an arc-section baffle. The straight-section baffle is a cuboid, and the arc-section baffle is a frustum of a pyramid and contracts inward at both ends of the water-facing side. Plug sockets are provided on both the baffle and the wing plate of the outer column. The two ends of the baffle are respectively fixedly connected to the adjacent wing plates of the outer column through plugs; lifting hooks are provided at both ends of the back water surface of the baffle, and lifting hooks are provided on both sides of the outer end of the web of the outer column. A pull rope is used to connect the lifting hooks on the baffle and the web of the outer column to prevent the baffle from slipping off to the water-facing side. The outer column and the baffle enclose the pool wall of the pool; Thread holes are reserved at the centers of the webs at the top and bottom of the outer column. The outer ends of the stay cables are fixed to the tops and bottoms of the outer sides of the webs of the outer column through anchor bolts. After passing through the thread holes of the outer column, the stay cables are respectively connected to the lifting hooks at the top and bottom of the central column; A water-proof membrane spliced into one piece is laid on the inner side of the pool wall and the bottom of the pool. The edge of the water-proof membrane is suspended and fixed at the top of the pool wall. A water intake pipe and a sludge discharge pipe leading to the outside of the pool are provided at the bottom of the pool. The pipe orifices are hermetically connected to the water-proof membrane through composite water tank joints. The central column and the water-proof membrane are hermetically connected through a flange plate; a protection cushion layer is provided under the water-proof membrane, a fine sand layer is laid under the water-proof membrane at the bottom, and water-proof cloth is padded around the pipe orifices of the pool wall, the armpit angle, the water intake pipe and the sludge discharge pipe; A sun-proof and water-proof cloth is laid on top of the top stay cable for capping, and a water-permeable hole is opened at the sunken part of the capping to prevent excessive water accumulation on the top; A pool with a plane bilaterally symmetrical figure is built using a water-proof membrane, a baffle, columns and stay cables. A stay cable force transmission system is established between the columns to conduct the horizontal thrust borne by the concrete baffle to the outer column. The stay cables connect the columns, and the outward thrust of the water body is converted into the tension between the columns and offset by the balanced counter-tension; the outer column is connected to the central column, and the central column provides anti-toppling tension to maintain the upright stability of the pool wall around the pool. The central column obtains stability by means of the buried depth; the pool wall is mainly composed of columns and baffles. The baffles are assembled into an upright plane. The columns and the baffle surfaces are spaced from each other and connected in sequence to form a polygonal water-retaining surface combined with piles and plates; the columns and the baffles are erected on a load-bearing raft slab, and plugs are provided between the columns and the baffles to limit relative displacement; lifting hooks are provided at both ends of the back water surface of the baffle and are tightened by connecting ropes to the back side of the column to prevent the baffle from slipping off to the water-facing side; scissors braces are provided between adjacent columns, and the top and bottom ends are connected to each other by stay cables according to the counter-tension rule; a water-proof membrane is laid in the pool, and its edge is fixed at the top of the pool wall. Water-proof cloth is padded between the water-proof membrane and the pool wall, and fine sand is padded under the membrane at the bottom of the pool; A sun-proof and water-proof cloth is laid on top of the top stay cable of the pool for capping, and water-permeable holes are provided at the flat laying position of the water-proof cloth to prevent excessive water accumulation on the top.

[0005] A construction method for an assembled reinforced concrete pool, characterized by including the following steps: S1, design the pool according to the use requirements and construction site conditions, determine the shapes, specifications and usage quantities of the columns, baffles and raft slabs, and precast them; S2. Clean the construction base surface of the pool, level and tamp it to ensure that the stability and bearing capacity of the erection positions of the central column and the outer columns meet the requirements. As the enlarged foundation of the outer columns, the raft slab must be able to stably bear the self-weight of the outer columns, baffle plates and struts, and the foundation settlement and deformation at other positions shall not endanger the central column and the raft slab foundation. S3. Dig a pit and embed the central column with gravel or concrete. The circumferential hanging buckle at the bottom is at the same elevation as the cable at the bottom end of the outer column, and the flange is at the same laying height as the hydraulic membrane at the bottom of the pool. Pre-embed the water intake pipe and the sludge discharge pipe, and the pipe orifice inside the pool is at the same height as the bottom of the pool. A vertical pipe for preventing sediment is added to the water inlet of the water intake pipe. Fixing anchor seats for guy ropes are arranged around the pool. S4. Lay the raft slab, set up supports and scaffolds, erect the outer columns on the raft slab, insert reinforced concrete limit blocks on both sides of the column feet, brace the struts against each other between adjacent outer columns and set up cross braces. Install the baffle plates, and connect the baffle plates and the outer columns with pins to limit the relative displacement. Install and tighten the ropes connecting the baffle plates and the outer columns to prevent the baffle plates from slipping towards the water-facing side. S5. Connect the cables between the outer columns and the central column, and connect the guy ropes between the outer columns in the straight section and the anchor seats. The cables and guy ropes are connected symmetrically and in batches. After all are connected, tighten them step by step and symmetrically in a cycle. After the cables and guy ropes are tightened, remove the supports and scaffolds.

[0006] S6. Lay a fine sand layer at the bottom of the pool, and thicken the fine sand layer at the axils between the pool wall and the bottom, around the pipe orifices of the water intake pipe and the sludge discharge pipe. Lay geotextiles around the pool wall, axils, pipe orifices of the water intake pipe and the sludge discharge pipe. Lay the hydraulic membrane and weld it into one piece, hang and fix the edge of the hydraulic membrane, seal and connect the central column and the hydraulic membrane with a flange, and seal and connect the water intake pipe and the sludge discharge pipe and the hydraulic membrane with a composite water tank joint. Lay a sun-proof and water-proof cloth for capping.

[0007] The beneficial effects of the present invention are as follows: (1) A force transmission system is formed by the cables, outer columns and central column, which converts the horizontal thrust borne by the baffle plates into the tensile force in opposite directions between the columns. Through the coordinated action of the outer anchor seats and the central column, a self-balanced anti-overturning system is formed, greatly improving the structural stability. The T-shaped reinforced concrete variable-section outer columns and the reinforced concrete hollow baffle plates, combined with the bottom load-bearing raft slab, are tightly spliced by rigid components, with elastic tension, combined with bracing and tension, rigid and flexible, achieving both local light weight and high strength and overall high elasticity, and can flexibly adapt to different water depths and geological conditions.

[0008] (2) All components are prefabricated standard parts with regular shapes and unified interfaces, supporting factory mass production, reducing manufacturing costs. The pin connection and rope tightening simplify the on-site assembly process, improve the construction efficiency by more than 50%, and do not rely on large machinery.

[0009] (3) The combination of the independent waterproof membrane made of hydraulic engineering film and the fine sand cushion layer has high self - adaptability, effectively avoiding local stress concentration, reducing the requirements for foundation deformation and waterproof performance, and being applicable to complex geological conditions such as soft soil and expansive soil; the control of the buried depth of the central column and the design of the raft plate to disperse the load effectively inhibit the harm of uneven settlement of the foundation to the structure.

[0010] (4) The design of the sunscreen and water - proof cloth capping and the permeable holes reduces evaporation and pollution, and extends the service life of the hydraulic engineering film; the components are detachable and recyclable, and only local replacement is required during maintenance, reducing the operating cost by 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic plan view of a prefabricated reinforced concrete thin - wall water tank.

[0012] Figure 2 It is a schematic cross - sectional view of the prefabricated reinforced concrete thin - wall water tank in the short - axis direction.

[0013] Figure 3 It is a schematic cross - sectional view of the prefabricated reinforced concrete thin - wall water tank in the long - axis direction.

[0014] Figure 4 It is a top view of the corner of a prefabricated reinforced concrete thin - wall water tank.

[0015] Figure 5 It is a schematic diagram of the setting of the strut.

[0016] Figure 6 It is a cross - sectional view of the hollow baffle.

[0017] Figure 7 It is a top view of the arc - segment baffle after installation.

[0018] Figure 8 It is a top view of the straight - segment baffle after installation.

[0019] Figure 9 It is an outer view of the baffle after installation.

[0020] Wherein: 1 - hydraulic engineering film, 2 - cable, 21 - anchor bolt, 3 - central column, 31 - outer column of the arc segment, 32 - outer column at the corner, 33 - outer column of the straight segment, 4 - arc - segment baffle, 41 - straight - segment baffle, 5 - raft plate, 51 - limit block, 6 - bolt pin, 61 - bolt - pin hole, 7 - strut, 8 - hanging buckle, 9 - pulling rope, 10 - fine sand layer, 11 - hydraulic engineering cloth, 12 - flange, 13 - composite water tank joint, 14 - guy wire, 15 - anchor block, 16 - water intake pipe, 17 - sludge discharge pipe, 18 - anti - sand vertical pipe. DETAILED IMPLEMENTATION MANNER

[0021] Embodiment 1: An assembled reinforced concrete pool, comprising a hydraulic membrane 1, a cable 2, columns and baffles. The columns include a central column 1 and outer columns. The outer columns are T-shaped variable cross-section reinforced concrete precast members, and the outer columns are erected on the raft 5. Reinforced concrete limit blocks 51 are inserted into the raft 5 on both sides of the column feet of the outer columns to restrict the rotation and lateral displacement of the outer columns. A number of outer columns are evenly arranged to enclose an oval-shaped pool. The outer columns include arc-section outer columns 31, straight-section outer columns 33 and corner outer columns 32. The arc-section outer columns 31 are evenly arranged in a circumferential direction on the arc segments at the positions of the pool walls of the oval-shaped pool. The straight-section outer columns 33 are arranged on the straight segments between the arc segments, and the corner outer columns 32 are arranged at the joints between the arc segments and the straight segments. Central columns 3 are buried at the two centers on the long axis of the pool, and the burial depth is greater than 1 / 6 of the total height of the central columns 3, and the height of the central columns 3 is greater than that of the outer columns. A number of hanging buckles 8 are evenly arranged in a circumferential direction at the top of the central columns 3 and at the parts above the ground at the bottom. The webs of the arc-section outer columns 31 and the corner outer columns 32 face the central columns 3, and the webs of the straight-section outer columns 33 are perpendicular to the long axis of the pool. The tops and bottoms of adjacent outer columns are respectively braced against each other by struts 7, and struts 7 are connected between the outsides of adjacent outer columns to form a scissors brace. The top of the straight-section outer column 33 is connected to an anchor seat 15 arranged outside the pool wall through a guy wire 14 to prevent the pool wall from tipping inward.

[0022] The baffle is a reinforced concrete hollow slab, including a straight-section baffle 41 and an arc-section baffle 4. The straight-section baffle 41 is a cuboid, and the arc-section baffle 41 is a frustum of a pyramid and contracts inward at both ends of the water-facing surface. Plug holes 61 are opened on the wing plates of the baffle and the outer columns. Both ends of the baffle are fixedly connected to the wing plates of adjacent outer columns through pins 6, and hanging buckles 8 are fixedly arranged on both sides of the back water surface of the baffle, and hanging buckles 8 are fixedly arranged on both sides of the outer ends of the webs of the outer columns. A pull rope 9 is used to connect the hanging buckles 8 on the baffle and the hanging buckles 8 on the webs of the outer columns. All the outer columns and the baffle enclose the pool wall.

[0023] Threading holes are reserved at the centers of the webs at the top and bottom of the outer columns. The outer ends of the cables 2 are fixed to the outer sides at the top and bottom of the webs of the outer columns through anchor bolts 21. After passing through the threading holes of the outer columns, the cables 2 are respectively connected to the hanging buckles 8 at the top and bottom of the central columns 3.

[0024] Lay a fine sand layer 10 at the bottom of the pool. At the armpit angle between the pool wall and the bottom, and around the pipe orifices of the water intake pipe and the sludge discharge pipe, the fine sand layer 10 is thickly laid; lay a water conservancy cloth 11 around the pipe orifices of the pool wall, the armpit angle, the water intake pipe 16 and the sludge discharge pipe 17; lay a spliced - together water conservancy film 1 on the inner side of the pool wall and the bottom of the pool, hang and fix the edge of the water conservancy film 1 at the top of the pool wall. The bottom of the pool is provided with a water intake pipe 16 and a sludge discharge pipe 17 leading to the outside of the pool. The pipe orifices are hermetically connected to the water conservancy film 1 through a composite water tank joint 13. The central column 3 is hermetically connected to the water conservancy film 1 through a flange 12. A sunscreen and water - proof cloth is laid on top of the top cable to cap the pool, and a water - permeable hole is opened at the sunken part of the cap to prevent excessive water accumulation on the top.

[0025] The construction method of the prefabricated reinforced concrete pool is as follows: S1. Design the pool according to the usage requirements and construction site conditions, determine the quantity of columns, baffles, and raft slabs to be used and prefabricate them. In this embodiment, it is planned to build a pool with a designed volume of 1000 m³, a water depth of 4.8 m, a straight - line section length of 9 m, a width of 12 m, and a semi - circle of the arc section with a radius of 5.97 m. A total of 96 arc - section baffles 4 and 48 straight - line section baffles 41 are used. The baffles are all made of reinforced concrete hollow slabs. The specifications of the arc - section baffles 4 are all 3000 mm×600 mm×120 mm, the length on the water - facing side is 2936 mm, and a 15° bevel is set at the end. The specifications of the straight - line section baffles 41 are all 3000 mm×600 mm×120 mm. The central column 3 is made of steel pipe. A total of 18 outer columns are set on the pool enclosure wall, including 10 arc - section columns 31, 4 straight - line section outer columns 33, and 4 corner outer columns 32. The raft slab 5 is a cuboid reinforced concrete slab used to bear the weight of the columns and baffles.

[0026] S2. Clean the construction base surface of the pool, level and tamp it to ensure that the position stability and bearing capacity of the central column 3 and the outer columns for erection meet the requirements. The raft slab 5 serves as an enlarged foundation for the outer columns, bearing the self - weight of the outer columns, baffles, and struts. The foundation settlement and deformation in other positions shall not endanger the central column and the raft slab foundation.

[0027] S3. Dig a pit and bury the central column 3 with gravel or concrete. The elevation of the bottom circumferential hanging buckle 8 is the same as that of the bottom cable of the outer column, and the elevation of the flange 12 is the same as the laying height of the water conservancy film 1 at the bottom of the pool; pre - bury the water intake pipe 16 and the sludge discharge pipe 17, and the elevation of the pipe orifices inside the pool is the same as the bottom of the pool. A vertical pipe 18 for preventing sediment is set at the water intake of the water intake pipe 16; set cable - guy fixing anchors 15 around the pool.

[0028] S4. Lay the raft foundation 5, set up the supports and scaffolds, erect the outer columns on the raft foundation 5, insert reinforced concrete limit blocks 51 on the raft foundation 5 on both sides of the column feet, brace the struts 7 between adjacent outer columns and set up the cross braces; install the baffles, connect the baffles and the outer columns with pins 6 to limit the relative displacement; install and tighten the ropes 9 connecting the baffles and the outer columns to prevent the baffles from slipping off towards the water-facing side.

[0029] S5. Connect the cables 2 between the outer columns and the central column 3, and connect the guy ropes 14 between the outer columns 33 in the straight section and the anchor seats 15; connect the cables 2 and the guy ropes 14 symmetrically and in batches. After all connections are made, tighten them step by step and symmetrically in a cycle; after the cables 2 and the guy ropes 14 are tightened, disassemble and remove the supports and scaffolds.

[0030] S6. Lay a fine sand layer 10 at the bottom of the pool, and thicken the laying of the fine sand layer 10 around the axils between the pool wall and the bottom, and around the pipe orifices of the water intake pipe and the sludge discharge pipe; lay the geotextiles 11 around the pool wall, axils, pipe orifices of the water intake pipe 16 and the sludge discharge pipe 17; lay the waterproof membrane 1 and weld it into one body, hang and fix the edge of the waterproof membrane, use the flange 12 to seal the connection between the central column 3 and the waterproof membrane 1, and use the composite water tank joint 13 to seal the connection between the water intake pipe 16 and the sludge discharge pipe 17 and the waterproof membrane 1; lay the sunscreen and water-proof cloth to cap.

Claims

1. An assembled reinforced concrete pool, characterized in that: It includes a hydraulic membrane, baffles, columns and cables. The columns include a central column and outer columns. The outer columns are of reinforced concrete structure with a T-shaped cross-section. The outer columns are erected on the raft slab. Socket holes are provided on both sides of the column feet of the raft slab, and reinforced concrete limit blocks are inserted to restrict the rotation and lateral displacement of the outer columns. A number of outer columns are evenly arranged to enclose a pool with a double-axisymmetric figure on the plane. The outer columns include arc-section outer columns, straight-section outer columns and corner outer columns. The arc-section outer columns are evenly arranged circumferentially on the arc segments of the pool wall of the double-axisymmetric figure. Straight-section outer columns are arranged on the straight segments between the arc segments, and corner outer columns are arranged at the joints between the arc segments and the straight segments. A central column is buried at the center of the arc segment of the pool. The buried depth of the central column is greater than 1 / 6 of its total height, and the height of the central column is greater than that of the outer columns. A number of hanging buckles are evenly arranged circumferentially at the top of the central column and above the ground at the bottom. The webs of the arc-section outer columns and the corner outer columns face the central column, and the webs of the straight-section outer columns are perpendicular to the axis of symmetry. The tops and bottoms of adjacent outer columns are respectively connected by struts in a butt-to-butt manner. Struts are connected between the outer sides of adjacent outer columns to form a scissors brace. The top of the straight-section outer column is connected to an anchor seat arranged outside the pool wall through a guy wire; The baffles are reinforced concrete hollow slabs, including straight-section baffles and arc-section baffles. The straight-section baffles are cuboids, and the arc-section baffles are frustum-shaped and shrink inward at both ends of the water-facing surface. Plug sockets are provided on the wing plates of the baffles and the outer columns. Both ends of the baffles are respectively fixedly connected to the wing plates of adjacent outer columns through plugs; Hanging buckles are provided at both ends of the back water-facing surface of the baffles, and hanging buckles are provided on both sides of the outer ends of the webs of the outer columns. A pull rope is used to connect the hanging buckles on the baffles and the webs of the outer columns to prevent the baffles from slipping off to the water-facing surface. The outer columns and the baffles enclose the pool wall; Thread holes are reserved at the centers of the webs at the top and bottom of the outer columns. The outer ends of the cables are fixed to the outer sides at the top and bottom of the webs of the outer columns through anchor bolts. After passing through the thread holes of the outer columns, the cables are respectively connected to the hanging buckles at the top and bottom of the central column; A spliced hydraulic membrane is laid on the inner side of the pool wall and at the bottom of the pool. The edge of the hydraulic membrane is suspended and fixed at the top of the pool wall. A water intake pipe and a sludge discharge pipe leading to the outside of the pool are provided at the bottom of the pool, and the pipe orifices are hermetically connected to the hydraulic membrane through a composite water tank joint. The central column and the hydraulic membrane are hermetically connected through a flange; A protection cushion layer is provided under the hydraulic membrane, a fine sand layer is laid under the bottom hydraulic membrane, and geotextiles are padded around the pool wall, the axils, the orifices of the water intake pipe and the sludge discharge pipe; A sunscreen and water-proof cloth is laid on top of the top cable to cap the pool, and a water-permeable hole is opened at the sunken part of the cap to prevent excessive water accumulation on the top; A pool with a two-axis symmetrical shape is constructed using hydraulic membranes, baffles, columns and cables. A cable force transmission system is established between the columns to transmit the horizontal thrust borne by the concrete baffles to the outer columns. The cables connect the columns, and the outward thrust of the water body is converted into a tension between the columns, which offset each other through balanced tension. The outer columns are connected to the central columns, which provide anti-lodging tension to maintain the upright stability of the pool walls around the water. The central columns gain stability through burial depth. The pool walls are mainly composed of columns and baffles, which are assembled into vertical planes. The columns and baffle surfaces are spaced apart and connected in sequence to form a polygonal water retaining surface combined with piles and plates. The columns and baffles are erected on the load-bearing raft, and pins are set between the columns and baffles to limit relative displacement. Buckles are set at both ends of the baffle's back-to-water surface, which are connected and tightened with ropes to prevent the baffle from slipping toward the water-facing surface.

2. A construction method of an assembled reinforced concrete water tank, characterized in that The following steps are involved: S1. Design the pool according to the use requirements and construction site conditions, determine the shape, specifications and quantity of columns, baffles and rafts, and prefabricate them; S2. Clean the foundation surface of the pool, level it, and compact it to ensure that the stability and bearing capacity of the central and outer columns meet the requirements. The raft, as the expanded foundation of the outer columns, must be able to stably bear the weight of the outer columns, baffles, and struts. Settlement and deformation of the foundation at other locations must not endanger the central column and raft foundation. S3: Dig a pit and bury the central column with gravel or concrete. The bottom annular hook should be aligned with the cable at the bottom of the outer column, and the flange should be aligned with the hydraulic membrane at the bottom of the pool. Pre-buried water intake and drainage pipes should be aligned with the pool bottom. A vertical pipe should be installed at the water intake to prevent sediment. Anchorages for guy ropes should be installed around the perimeter of the pool. S4: Lay the raft, set up supports and scaffolding, erect the outer columns on the raft, insert reinforced concrete limit blocks on both sides of the column feet, and set up scissor braces between adjacent outer columns; install the baffles, which are connected to the outer columns with pins to limit relative displacement; install the ropes connecting the baffles and the outer columns and tighten them to prevent the baffles from sliding toward the water surface; S5, connect the cables between the outer columns and the central column, and connect the guy ropes between the straight outer columns and the anchor blocks; connect the cables and guy ropes symmetrically in batches. After all are connected, tighten them symmetrically in steps and cycles; after the cables and guy ropes are tightened, dismantle and remove the brackets and scaffolding; S6. Lay a layer of fine sand on the bottom of the pool. Thicken the fine sand layer at the corners between the pool wall and the bottom, and around the nozzles of the water intake pipe and the mud discharge pipe. Pad the pool wall, corners, and around the nozzles of the water intake pipe and the mud discharge pipe with hydraulic cloth. Lay the hydraulic membrane and weld it together. Hang and fix the edge of the hydraulic membrane. Use flanges to seal the center column and the hydraulic membrane. Use composite water tank joints to seal the water intake pipe and the mud discharge pipe with the hydraulic membrane. Lay a sun-proof waterproof cloth to seal the roof.

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