Narrow space single-side formwork erecting tool and method

Abstract

The invention relates to the technical field of formwork equipment construction, in particular to a narrow-space single-side formwork erecting tool and method.The narrow-space single-side formwork erecting tool comprises formwork bodies and back ridges, the formwork bodies are located on a foundation, the back ridges are installed on the outer side walls of the two parallel formwork bodies at equal intervals in the vertical direction, and the two back ridges on the same horizontal plane are fixed through split bolts; a square tube is arranged on the back ridge facing one side of the adjacent wall body, and the square tube is perpendicular to the back ridge; a rectangular hole is formed in the middle of the outer wall of the side, facing the adjacent wall body, of the square pipe, rectangular plates are symmetrically welded to the inner side of the square pipe, an inner cavity of the square pipe is divided into a mounting area and a guide rail area through the rectangular plates, a plurality of formwork supporting parts are arranged in the guide rail area, and a supporting plate is welded to the outer wall of the square pipe. A supporting plate is fixedly installed at the top of the supporting plate through bolts, and a locking threaded rod is installed at the position, close to the end, of the supporting plate in the vertical direction in a threaded fit mode. The formwork supporting device can meet the requirement for formwork supporting in narrow spaces with different intervals, and the formwork supporting effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of formwork equipment construction, and in particular to a single-sided formwork tool and method for a narrow space. Background Art

[0002] In the field of construction engineering, especially in old city renovation, historical building protection and surrounding expansion projects, it is often necessary to construct new buildings on one side of existing buildings (such as old walls). This type of construction scene often faces the challenge of limited space, that is, the distance between the old wall and the new building is extremely narrow, which brings great inconvenience and difficulty to the construction. In traditional construction methods, single-sided formwork is an important tool to support concrete casting structures, among which triangular single-sided formwork is widely used due to its simple structure and convenient operation. However, in a small space, the traditional triangular single-sided formwork fixing method is often difficult to adapt to the changing spacing requirements, resulting in installation difficulties, insufficient stability, and may even be unusable due to space limitations, which in turn affects the construction quality and progress.

[0003] Specifically, the traditional triangular single-sided formwork is usually designed based on fixed support angles and lengths, lacking sufficient adjustment flexibility and making it difficult to accurately match construction requirements with different spacings. When working in a narrow space, this fixity not only limits its scope of application, but may also reduce the overall stability of the formwork system due to insufficient or uneven distribution of support points, increasing safety risks during construction. In addition, narrow spaces are often accompanied by problems such as limited working space and obstructed vision, further exacerbating construction difficulty and efficiency issues.

[0004] Therefore, it is necessary to provide a narrow space single-sided formwork tool and method to solve the above technical problems. Summary of the invention

[0005] In view of the problems in the prior art, the present invention provides a single-sided formwork tool and method for a narrow space.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an assembled composite board paving construction device, comprising a template body and a back rib, the template body is located on a foundation, two outer side walls parallel to the template body are provided with back ribs at equal distances in a vertical direction, the two back ribs on the same horizontal plane are fixed by tension bolts, a square tube is provided on the back rib on one side facing the adjacent wall, and the square tube and the back rib are perpendicular to each other; A rectangular hole is centrally opened on the outer wall of one side of the square tube facing the adjacent wall, and a rectangular plate is symmetrically welded on the inner side of the square tube, and the inner cavity of the square tube is divided into an installation area and a guide rail area by the rectangular plate, and a plurality of mold support parts are arranged in the guide rail area, and a support plate is welded on the outer wall of the square tube, and a support plate is fixedly installed on the top of the support plate by bolts, and a locking threaded rod is installed on the support plate near the end in the vertical direction through threaded cooperation; The formwork part includes a slider slidably inserted in the guide rail area, a support block is welded to the outer wall of the slider, and the support block passes through the rectangular hole and protrudes outside, an axle rod is arranged at the end position of the support block, a swing arm is rotatably installed on the outer wall of the axle rod, a roller is installed at the end of the swing arm, the outer wall of the roller contacts with the outer wall of the adjacent wall but is not connected, and a diagonal brace is fixedly installed at the bottom of the support block.

[0007] Preferably, a mounting hole is provided inside the swing arm and toward one end of the shaft rod, guide rods are symmetrically installed on the inner wall of the mounting hole, displacement plates are slidably sleeved on the two guide rods, a support spring is sleeved on the outer wall of the guide rod, and one end of the support spring is in contact with the displacement plate, a rack is fixedly installed at the end of the displacement plate, a positioning shaft is provided on the inner wall of the mounting hole, a gear is rotatably installed on the outer wall of the positioning shaft, and the gear is meshed with the rack, a driving arm is eccentrically hinged on the end face of the gear, a limiting cylinder is fixedly installed on the inner wall of the mounting hole and located between the shaft rod and the positioning shaft, a limiting plug rod is inserted in the limiting cylinder, and one end of the limiting plug rod is rotatably connected to one end of the driving arm.

[0008] Preferably, thread grooves are symmetrically provided at the center of the upper and lower end surfaces of the slider, a T-screw is installed in the thread groove, a fixing ring is installed near the head of the T-screw, a quick-release rope is provided between adjacent sliders, and both ends of the quick-release rope are fixedly connected to the fixing ring.

[0009] Preferably, a positioning rubber pad is embedded at the end of the limiting plug rod, the end face of the positioning rubber pad is an inner concave surface, and the surface of the inner concave surface is a frosted surface.

[0010] Preferably, a push rod is arranged at a lower position of the guide rod, and a plurality of push rods are distributed at equal angles in the circumferential direction about the axis of the center line of the guide rod.

[0011] Preferably, an L-shaped rod is welded to the bottom of the support block, and the end of the L-shaped rod is fixedly hung on the outer wall of the diagonal support by electric welding.

[0012] Preferably, a steel ball is fixedly mounted on the head of the locking threaded rod, and the outer surface of the steel ball is a smooth surface.

[0013] Preferably, the gravity of the diagonal support is greater than the elastic force of the supporting spring.

[0014] In addition, the present invention also provides a method for using a narrow space single-sided formwork tool, and the method for using a narrow space single-sided formwork tool specifically comprises the following steps: S1. Inspection and testing: The inspectors first visually observe whether there are cracks, deformation, leakage and bulging on the surface of the adjacent walls. After observing that there are no such phenomena, they will use ultrasonic flaw detectors and infrared thermal imagers to perform instrumental inspections on the adjacent walls; S2. Arrange the formwork: After the S1 inspection is completed and there are no internal defects, cracks, leakage, etc. in the adjacent walls, arrange the formwork support points on the foundation and mark them with lime lines. Place the formwork body on the foundation along the marked lines in the vertical direction, and use a level to check the horizontality, verticality and retrograde of the adjacent formwork bodies. After the inspection is correct, install multiple back ribs on the outer wall of the formwork body, and fix the square tube on one side of the back rib in the vertical direction; S3, fixed formwork: insert several formwork parts along the square tube, slide down along the square tube by their own gravity, after each formwork part slides down to the specified position, use a wrench to turn the locking threaded rod to contact the uppermost swing arm, and lock the position of multiple formwork parts in a single square tube; S4, steel bar binding: tie the steel bar cage inside the formwork body, and the spacing deviation of the steel bars in the cage should be kept within ±20mm; S5. Concrete pouring: After S4 is completed, use a small concrete pump truck or manual pouring to deliver concrete into the formwork body. During the pouring process, change the particle size distribution of sand and stone to control the fluidity of the concrete, and vibrate from the outside to the inside and from the bottom to the top until the concrete is filled densely and there are no obvious bubbles.

[0015] S6. Post-maintenance: After S5 is completed, the humidity of the concrete is adjusted by covering it with a wet cloth, sprinkling water periodically, etc. Specifically, the moisture content of the concrete surface is adjusted to more than 95%.

[0016] Compared with the related art, the narrow space single-sided formwork tool and method provided by the present invention have the following beneficial effects: The present invention provides a single-sided formwork tool and method for a narrow space. The present invention is provided with a formwork part and other components. The present invention installs square tubes in parallel with each other on one side of the back rib, and sequentially puts a plurality of formwork parts into the square tube. Extrusion force is applied from top to bottom between the plurality of formwork parts, so that the roller is closely attached to the outer wall of the adjacent wall, which can be applied to construction requirements of different spacings, and the roller is not easy to cause damage to the surface of the adjacent wall during the action process; The present invention provides a tool and method for single-sided formwork in a narrow space. The present invention is provided with components such as a swing arm. During the construction process, the displacement plate can be effectively squeezed to move through extrusion, so that the contact between the limiting plug rod and the shaft rod is achieved. The relative stability of the swing arm is further increased through extrusion, that is, after the swing arm is positioned, the roller will be tightly attached to the outer side wall of the adjacent wall, and the stability is higher. At the same time, when the concrete is poured and completely dried, the multiple formwork parts can be separated from the square tube by pulling the quick-release rope, so that the disassembly process is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a top view of the square tube of the present invention; Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of the middle A area; Figure 4 For the present invention Figure 1 A partial enlarged schematic diagram of the middle B area; Figure 5 For the present invention Figure 1 A partial enlarged schematic diagram of the middle C area; Figure 6 is a flow chart of the present invention; Numbers in the figure: 1. template body, 2. back rib, 3. square tube, 4. template support part, 31. rectangular hole, 32. rectangular plate, 33. support plate, 34. support plate, 35. locking threaded rod, 41. slider, 42. support block, 43. diagonal brace, 44. swing arm, 45. roller, 421. shaft rod, 440. mounting hole, 441. guide rod, 442. displacement plate, 443. support spring, 444. rack, 445. positioning shaft, 446. gear, 447. driving arm, 448. limiting cylinder, 449. limiting plug rod, 411. threaded groove, 412. T-screw, 413. fixing ring, 414. quick release rope, 451. positioning rubber pad, 452. top rod. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] In addition, the terms used below are defined based on the functions of the present invention and may differ depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0020] See also Figure 1-6 The present invention discloses a narrow space single-sided formwork tool and method, comprising a template body 1 and a back rib 2, wherein the template body 1 is located on a foundation, and the outer side walls of two parallel template bodies 1 are provided with back ribs 2 at equal distances in a vertical direction, and the two back ribs 2 in the same horizontal plane are fixed by tension bolts, and a square tube 3 is provided on the back rib 2 facing the adjacent wall, and the square tube 3 is perpendicular to the back rib 2, and the number of the tubes 3 above the same template body 1 is not less than one, and the template body 1 is adjusted on site according to the actual width of the template body 1 to meet the spacing of the adjacent two square tubes 3 of 80-120cm; A rectangular hole 31 is centrally opened on the outer wall of the square tube 3 facing the adjacent wall, and a rectangular plate 32 is symmetrically welded on the inner side of the square tube 3, and the inner cavity of the square tube 3 is divided into an installation area and a guide rail area by the rectangular plate 32. When the installation area is convenient for construction, the operator fixes the square tube 3 on one side of the back rib 2. During the fixed installation process, the position of the adjacent square tubes 3 should be located by a level to keep the square tubes 3 at any position parallel to each other; A plurality of support mold parts 4 are arranged in the guide rail area, and the number of support mold parts 4 in a single square tube 3 is determined by the height of the template body 1 and the distance between the template body 1 and the adjacent wall; A support plate 33 is welded to the outer wall of the square tube 3, a support plate 34 is fixed to the top of the support plate 33 by bolts, a locking threaded rod 35 is installed near the end of the support plate 34 in the vertical direction by threaded matching, and the locking threaded rod 35 is rotated by a wrench, and the locking threaded rod 35 performs vertical lifting movement relative to the support plate 34; The head of the locking threaded rod 35 is fixed with a steel ball, which is not easy to damage, and the outer surface of the steel ball is smooth, with a relatively small friction coefficient; The formwork part 4 includes a slider 41 slidably inserted in the guide rail area, a support block 42 is welded to the outer wall of the slider 41, and the support block 42 passes through the rectangular hole 31 and leaks out, an axle rod 421 is arranged at the end position of the support block 42, a swing arm 44 is rotatably installed on the outer wall of the axle rod 421, a roller 45 is installed at the end of the swing arm 44, the outer wall of the roller 45 is in contact with the outer wall of the adjacent wall but not connected, an oblique support 43 is fixedly installed at the bottom of the support block 42, the gravity of the oblique support 43 is greater than the elastic force of the support spring 443, when the formwork body 1, the back rib 2 and the square tube 3 are completed, the formwork part 4 can be installed, specifically, the slider 41 is aligned with the guide rail area and inserted, the slider 41 slides down vertically along the guide rail area of ​​the square tube 3 under the action of its own gravity until the oblique support 43 contacts the foundation ground, the slider 41 stops moving, and in the process of the slider 41 sliding down along the guide rail area, the The swing arm 44 can be deflected relative to the shaft 421, and the roller 45 at the end of the swing arm 44 will roll and slide on the outer wall surface of the adjacent wall 1. According to the above operation, another supporting formwork part 4 is placed into the square tube 3. At this time, the diagonal support 43 in the supporting formwork part 4 will fall to the top of the swing arm 44 and stop. At this time, the deadweight of the latter supporting formwork part 4 will act on the swing arm 44 of the upper supporting formwork part 4 to limit its position. According to this method, the supporting formwork parts 4 are installed upward in sequence until the square tube 3 is full. Finally, the construction personnel use a wrench to twist the locking threaded rod 35 to vertically descend relative to the support plate 34. The steel ball at the bottom of the locking threaded rod 35 contacts the top of the swing arm 44 to lock the overall position of the supporting formwork part 4. In this way, the single-sided formwork of the template in a narrow space can be quickly completed, and the swing arm 44 can be adapted to the needs of supporting formwork with different spacings by adjusting the deflection angle, and has a wide range of applications.

[0021] In another embodiment, see Figure 1-Figure 6 A mounting hole 440 is provided inside the swing arm 44 and at one end facing the shaft 421. A guide rod 441 is symmetrically installed on the inner wall of the mounting hole 440. A displacement plate 442 is slidably sleeved on the two guide rods 441. A support spring 443 is sleeved on the outer wall of the guide rod 441, and one end of the support spring 443 is in contact with the displacement plate 442. A rack 444 is fixedly installed at the end of the displacement plate 442. A positioning shaft 445 is provided on the inner wall of the mounting hole 440. A gear 446 is rotatably installed on the outer wall of the positioning shaft 445, and the gear 446 is meshed with the rack 444. A driving arm 447 is eccentrically hinged on the end face of the gear 446. The inner wall of the mounting hole 440 is located between the shaft 421 and the positioning shaft 445. A limiting cylinder 448 is fixedly installed, and a limiting plug rod 449 is inserted in the limiting cylinder 448, and one end of the limiting plug rod 449 is rotatably connected to one end of the driving arm 447. In this embodiment, the installation steps of the supporting mold parts 4 at each position are the same. Only during the descending process of each supporting mold part 4, the latter's diagonal support 43 does not directly act on the top of the swing arm 44. Specifically, when the diagonal support 43 vertically descends a certain distance, it will contact the displacement plate 442. At this time, the swing arm 44 has a deflection force in the direction of the adjacent wall. The deflection force makes the roller 45 close to the outer wall of the adjacent wall. When the diagonal support 43 continues to descend, it will squeeze the displacement plate 442 to slide along the guide rod 441, and the support spring 443 is compressed and has a rebound force. like Figure 4 As shown, the rack 444 will move with the displacement plate 442, and the rack 444 will drive the gear 446 to rotate along the positioning shaft 445, and the gear 446 will drive the eccentrically connected driving arm 447 to move toward the shaft 421, and the driving arm 447 squeezes the limiting plug 449 to move in the limiting cylinder 448, so that the end face of the limiting plug 449 is in conflict with the shaft 421, and the relative stability of the swing arm 44 is further increased by squeezing, that is, after the swing arm 44 is positioned, the roller 45 will be close to the outer wall of the adjacent wall; A positioning rubber pad 451 is embedded at the end of the limiting rod 449, and the end face of the positioning rubber pad 451 is a concave surface. When the limiting rod 449 moves toward the shaft rod 421, the concave surface of the positioning rubber pad 451 will directly contact the outer wall of the shaft rod 421, and the surface of the concave surface is a frosted surface, which further increases the mutual friction between the two.

[0022] In another embodiment, see Figure 1-Figure 6, the upper and lower end surfaces of the slider 41 are symmetrically provided with a thread groove 411 in the center, a T-shaped screw 412 is installed in the thread groove 411, a fixing ring 413 is installed near the head of the T-shaped screw 412, and a quick-release rope 414 is provided between adjacent sliders 41, and both ends of the quick-release rope 414 are fixedly connected to the fixing ring 413, wherein the rope length of the quick-release rope 414 should generally be greater than the length of the template body 1. Based on the above-mentioned installation sequence, when each supporting mold part 4 is installed in the square tube 3, each quick-release rope 414 should be rotated to the upper and lower ends of the correcting slider 41 in advance, and when each supporting mold part 4 reaches the specified position, the quick-release rope 414 at each position is in the following Figure 3 In the relaxed state shown, when the concrete is poured and completely dried, the multiple formwork parts 4 can be separated from the square tubes 3 by pulling the quick-release rope 414, making the disassembly process more efficient.

[0023] See also Figure 1-Figure 6 A push rod 452 is provided at a lower position of the guide rod 441 , and a plurality of push rods 452 are distributed at equal angles in the circumferential direction with the axis of the center line of the guide rod 441 , and the relative displacement of the displacement plate 442 is limited by the plurality of push rods 452 .

[0024] An L-shaped rod is welded to the bottom of the support block 42, and the end of the L-shaped rod is fixed to the outer wall of the diagonal brace 43 by electric welding. The L-shaped rod increases the supporting strength of the diagonal brace 43, making it difficult to deform during use.

[0025] In addition, the present invention also provides a method for using a narrow space single-sided formwork tool, and the method for using a narrow space single-sided formwork tool specifically comprises the following steps: S1. Inspection and testing: The inspectors first visually observe whether there are cracks, deformation, leakage and bulging on the surface of the adjacent walls. After observing that there are no such phenomena, they will use ultrasonic flaw detectors and infrared thermal imagers to perform instrumental inspections on the adjacent walls; S2, arranging the formwork: after S1 is inspected and there are no internal defects, cracks, leakage, etc. in the adjacent walls, arrange the formwork support points on the foundation and mark them with lime lines, place the formwork body 1 on the foundation in the vertical direction according to the marked lines, and use a level to inspect the horizontality, verticality and retrograde of the adjacent formwork bodies 1. After the inspection is correct, install multiple back ribs 2 on the outer side wall of the formwork body 1, and fix the square tube 3 on one side of the back rib 2 in the vertical direction; S3, fix the formwork: insert several formwork parts 4 along the square tube 3, slide down along the square tube 3 by their own gravity, after each formwork part 4 slides down to the specified position, use a wrench to rotate the locking threaded rod 35 to contact the uppermost swing arm 44, and lock the position of multiple formwork parts 4 in a single square tube 3; S4, steel bar binding: tie the steel bar cage inside the formwork body 1, and the spacing deviation of the steel bars in the cage is kept at ±20mm; S5. Concrete pouring: After S4 is completed, concrete is delivered into the formwork body 1 using a small concrete pump truck or manual pouring. During the pouring process, the particle size distribution of sand and stone is changed to control the fluidity of the concrete, and the concrete is vibrated from outside to inside and from bottom to top until the concrete is densely filled and has no obvious bubbles.

[0026] S6. Post-maintenance: After S5 is completed, the humidity of the concrete is adjusted by covering it with a wet cloth, sprinkling water periodically, etc. Specifically, the moisture content of the concrete surface is adjusted to more than 95%.

[0027] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A single-sided formwork tool for a narrow space, comprising a formwork body (1) and a back rib (2), characterized in that: The template body (1) is located on a foundation, and the outer side walls of two parallel template bodies (1) are provided with back ribs (2) at equal distances in a vertical direction, and the two back ribs (2) on the same horizontal plane are fixed by tension bolts, and a square tube (3) is provided on the back rib (2) facing the adjacent wall, and the square tube (3) and the back rib (2) are perpendicular to each other; A rectangular hole (31) is centrally opened on the outer wall of one side of the square tube (3) facing the adjacent wall, a rectangular plate (32) is symmetrically welded to the inner side of the square tube (3), and the inner cavity of the square tube (3) is divided into an installation area and a guide rail area by the rectangular plate (32), and a plurality of mold support parts (4) are arranged in the guide rail area, a support plate (33) is welded to the outer wall of the square tube (3), a support plate (34) is fixedly installed on the top of the support plate (33) by bolts, and a locking threaded rod (35) is installed on the support plate (34) near the end in a vertical direction by threaded engagement; The formwork portion (4) comprises a slider (41) slidably inserted in the guide rail area, a support block (42) is welded to the outer wall of the slider (41), and the support block (42) passes through the rectangular hole (31) and is exposed to the outside, a shaft (421) is arranged at the end of the support block (42), a swing arm (44) is rotatably mounted on the outer wall of the shaft (421), a roller (45) is mounted at the end of the swing arm (44), the outer wall of the roller (45) is in contact with the outer wall of the adjacent wall but is not connected, and a diagonal brace (43) is fixedly mounted on the bottom of the support block (42).

2. A narrow space single-sided formwork tool according to claim 1, characterized in that: A mounting hole (440) is provided inside the swing arm (44) and at one end thereof facing the shaft (421). Guide rods (441) are symmetrically mounted on the inner wall of the mounting hole (440). Displacement plates (442) are slidably sleeved on the two guide rods (441). Support springs (443) are sleeved on the outer walls of the guide rods (441). One end of the support spring (443) contacts the displacement plate (442). A rack (444) is fixedly mounted at the end of the displacement plate (442). A positioning spring (443) is provided on the inner wall of the mounting hole (440). A shaft (445) is rotatably mounted on the outer wall of the positioning shaft (445), and the gear (446) is meshed with the rack (444). The end surface of the gear (446) is eccentrically hinged with a driving arm (447). A limiting cylinder (448) is fixedly mounted on the inner wall of the mounting hole (440) and located between the shaft (421) and the positioning shaft (445). A limiting plug rod (449) is inserted in the limiting cylinder (448), and one end of the limiting plug rod (449) is rotatably connected to one end of the driving arm (447).

3. A narrow space single-sided formwork tool according to claim 2, characterized in that: The upper and lower end surfaces of the slider (41) are symmetrically provided with thread grooves (411) at the center, a T-shaped screw (412) is installed in the thread groove (411), a fixing ring (413) is installed near the head of the T-shaped screw (412), and a quick-release rope (414) is provided between adjacent sliders (41), and both ends of the quick-release rope (414) are fixedly connected to the fixing ring (413).

4. A narrow space single-side formwork tool according to claim 3, characterized in that: A positioning rubber pad (451) is embedded at the end of the limiting plug rod (449); the end surface of the positioning rubber pad (451) is an inner concave surface, and the surface of the inner concave surface is a frosted surface.

5. A narrow space single-side formwork tool according to claim 4, characterized in that: A push rod (452) is provided at a lower position of the guide rod (441), and a plurality of push rods (452) are distributed at equal angles in the circumferential direction about the axis of the center line position of the guide rod (441).

6. A basement wallboard waterproof concrete construction device according to claim 5, characterized in that: An L-shaped rod is welded to the bottom of the support block (42), and the end of the L-shaped rod is fixedly hung on the outer wall of the diagonal support (43) by electric welding.

7. A narrow space single-side formwork tool according to claim 6, characterized in that: A steel ball is fixedly mounted on the head of the locking threaded rod (35), and the outer surface of the steel ball is a smooth surface.

8. The narrow space single-side formwork tool according to claim 7, characterized in that: The gravity of the diagonal support (43) is greater than the elastic force of the support spring (443).

9. A narrow space single-side formwork tool according to claim 8, characterized in that: A single-side formwork method for a narrow space is provided, which specifically comprises the following steps: S1. Inspection and testing: The inspectors first visually observe whether there are cracks, deformation, leakage and bulging on the surface of the adjacent walls. After observing that there are no such phenomena, they will use ultrasonic flaw detectors and infrared thermal imagers to perform instrumental inspections on the adjacent walls; S2, arranging the formwork: after the inspection of S1 is completed and the adjacent walls have no internal defects, cracks, leakage, etc., arrange the formwork support points on the foundation and mark them with lime lines, place the formwork body (1) on the foundation in the vertical direction according to the marked lines, and use a level to check the horizontality, verticality and retrograde of the adjacent formwork bodies (1). After the inspection is correct, install multiple back ribs (2) on the outer side wall of the formwork body (1), and fix the square tube (3) on one side of the back rib (2) in the vertical direction; S3, fixing the formwork: inserting a plurality of formwork parts (4) along the square tube (3), sliding down along the square tube (3) by their own gravity, after each formwork part (4) slides down to a specified position, using a wrench to rotate the locking threaded rod (35) to contact the uppermost swing arm (44), thereby locking the position of the plurality of formwork parts (4) in the single square tube (3); S4, steel bar binding: tie the steel bar cage inside the formwork body (1), and keep the spacing deviation of the steel bars in the cage within ±20mm; S5, concrete pouring: after S4 is completed, concrete is poured into the formwork body (1) using a small concrete pump truck or by manual pouring. During the pouring process, the particle size distribution of sand and stone is changed to control the fluidity of the concrete, and the concrete is vibrated from outside to inside and from bottom to top until the concrete is densely filled and has no obvious bubbles. S6. Post-maintenance: After S5 is completed, the humidity of the concrete is adjusted by covering it with a wet cloth, sprinkling water periodically, etc. Specifically, the moisture content of the concrete surface is adjusted to more than 95%.

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