High-water-level low-tidal-range pile cap hanging formwork construction method

Abstract

The invention provides a high-water-level low-tidal-range pile cap suspended formwork construction method which comprises the following steps: S1, pouring: pouring concrete into a steel pipe pile, and pre-burying a vertical supporting rod; a suspender with the adjustable length is installed on the supporting rod, a lower cross beam is hung at the bottom of the suspender, and the height of the lower cross beam is larger than the height of the water level of the position after tide rising; a base plate is laid on the lower cross beam, and through holes corresponding to the steel pipe piles are formed in the base plate; a reinforcement cage is installed on the base plate, and a formwork is installed on the side face of the reinforcement cage; after the water level is lowered, the length of the suspender is adjusted, the reinforcement cage is lowered to the designed position, and concrete pouring is conducted in the formwork; and S6, dismantling is conducted, specifically, after concrete pouring is completed, the supporting rods, the suspenders, the formworks and the base plates are dismantled. And S7, repairing is conducted, specifically, holes in the pile cap are blocked. According to the device, operation under the water immersion condition is promoted to the atmospheric area for operation through the hanging rod, construction is conducted effectively in the high-water-level time, and the construction quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a high water level and low tidal range pile cap hanging formwork construction method. Background Art

[0002] When pouring concrete at sea, the sea water level often changes. The construction of reinforced concrete structures such as pile caps and beams in the changing area will cause the pile cap construction area to be soaked in seawater for a long time under high water level conditions. Under the flooded conditions, it is impossible to complete the construction of many processes such as bottom formwork installation, steel cage installation, side formwork installation, concrete pouring, and concrete strengthening. Under the low tidal range, the low water level time is extremely short, and the effective construction time of the pile cap is short, which greatly slows down the construction progress.

[0003] The patent with publication number CN 207672561 U discloses a pipe pile cap structure, which relates to the field of industrial design technology, including a pipe pile and a pile cap arranged at the top of the pipe pile, wherein an annular connecting plate is arranged outside the top of the pipe pile, a supporting seat for supporting the pile cap is arranged on the connecting plate at the lower side of the pile cap, a plurality of spring jump beads are arranged on the connecting plate at the upper side of the supporting seat around the axial direction of the pipe pile, and a plurality of grooves are provided on the pile cap corresponding to the spring jump beads. However, the device still has the following problems:

[0004] 1. The device cannot adapt to the construction of changing water levels at sea and cannot guarantee the construction quality of the pile cap.

[0005] 2. When installing the pile cap, the installation environment is complex and the pile cap cannot be protected from falling, which can easily lead to accidents. Summary of the invention

[0006] In order to solve the problems existing in the above-mentioned prior art, a high water level and low tidal range pile cap hanging formwork construction method is provided.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] The present invention proposes a high water level and low tidal range pile cap hanging formwork construction method, comprising the following steps:

[0009] S1: Casting: Cast concrete into the steel pipe piles and embed vertical support rods;

[0010] S2: Hanging rod: A hanging rod with adjustable length is installed on the supporting rod, and a lower crossbeam is hung at the bottom of the hanging rod. The height of the lower crossbeam is higher than the water level at that location after high tide;

[0011] S3: Laying the plate: Lay the pad on the lower beam, and the pad is provided with through holes corresponding to the steel pipe piles;

[0012] S4: Tie the reinforcement: install the reinforcement cage on the pad and install the formwork on the side of the reinforcement cage;

[0013] S5: Lowering: After the water level drops, adjust the length of the suspension rod, lower the steel cage to the designed position, and pour concrete into the formwork;

[0014] S6: Demolition: After the concrete pouring is completed, the pile cap is formed and the support rods, hangers, formwork and pads are removed;

[0015] S7: Repair: Seal the holes on the pile cap.

[0016] Preferably, an upper cross beam is fixed to the upper end of the support rod, the upper cross beam is provided with a through hole for the suspension rod to pass through, and the suspension rod is fixed to the upper cross beam by bolts.

[0017] Preferably, the pad includes square timber, the square timber is fixed to the lower cross beam, and also includes bamboo plywood laid on the upper surface of the square timber.

[0018] Preferably, in S6, the dismantling steps are: first remove the formwork, lower the hanger, separate the bamboo plywood from the concrete at the bottom of the steel cage, remove the bamboo plywood, square timber and lower beam, and finally remove the support rods embedded in the concrete.

[0019] Preferably, the outer wall of the suspension rod is sleeved with a PVC tube.

[0020] Preferably, a connecting rope is fixed between the upper cross beam and the bottom of the suspension rod.

[0021] Preferably, before pouring concrete in the formwork, an anti-fall mechanism is used to prevent the lower cross beam from falling suddenly, and the anti-fall mechanism includes an anti-fall box fixed on the support rod, a rope-collecting wheel is provided in the anti-fall box, a pull rope is wound around the rope-collecting wheel, one end of the pull rope is fixed to the lower cross beam, and a detection component capable of detecting the rotation speed of the rope-collecting wheel is provided on one side of the rope-collecting wheel, and also includes a locking rod capable of limiting the movement of the rope-collecting wheel, and the locking rod cooperates with the detection component.

[0022] Preferably, the detection assembly includes a detection wheel connected to the rope collecting wheel, the detection wheel has a plurality of plug rods sliding radially, the plug rods and the detection wheel are fixed by tension springs, the detection wheel is coaxially provided with a first gear, the first gear is provided with a slot for inserting the plug rod, and the first gear is connected to the locking rod.

[0023] Preferably, the rope collecting wheel coaxial sleeve is provided with a second gear, the locking rod cooperates with the second gear, the second gear is meshed with the detection wheel, and a baffle capable of limiting the movement of the locking rod is connected to one side of the first gear, and the locking rod is fixed to the anti-fall box by a spring.

[0024] Preferably, a switch is fixed on one side of the baffle, the switch is electrically connected to an alarm device, and the baffle is slidably connected to the anti-fall box via a compression spring.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention embeds a support rod in the steel pipe pile, a hanger is installed on the support rod, and a template with a pile cap is hung at the bottom of the hanger. According to the high water level condition, the template platform is hung at a position higher than the water level, so that construction can be carried out in a dry environment. When the side formwork is installed and the conditions for pouring concrete are met, the hanger is lowered to lower the entire platform to the designed position, and concrete is poured. The construction is completed after maintenance; the template platform is lifted by the hanger under the immersion condition to the atmospheric zone for operation, so that the high water level time is effectively used for construction and the construction quality is improved.

[0027] 2. The present invention has a PVC tube outside the hanger and within the designed thickness of the pile cap, which is used to pull out the hanger after the concrete pouring is completed. At the same time, bolts and wire ropes are used to connect the lower part of the hanger with the upper crossbeam. After the construction is completed, the hanger can be lifted out of the water using the wire rope, which is convenient for reuse and avoids pollution.

[0028] 3. The present invention is provided with an anti-falling mechanism, which is fixed to the upper crossbeam. There is a rope taking-up wheel in the anti-falling mechanism, which is fixed to the lower crossbeam through the rope taking-up wheel. When the suspension rod and the lower crossbeam are lowered normally, the rope taking-up wheel rotates slowly. When the lower crossbeam drops rapidly, the rope taking-up wheel is driven to rotate faster. The detection wheel meshing with the rope taking-up wheel is thrown out with the insertion rod under the action of the centrifugal force of rapid rotation, so that the rod is inserted into the slot. Then the detection wheel drives the first gear to rotate, and the first gear pushes the baffle to release the limit on the locking rod, so that the locking rod is inserted into the teeth adjacent to the second gear coaxially fixed with the rope taking-up wheel, thereby completing the locking of the rope taking-up wheel and preventing the occurrence of falling accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 It is a schematic diagram of water level change of the present invention;

[0031] Figure 2 It is a three-dimensional diagram of the construction process 1 of the present invention;

[0032] Figure 3 It is a front view of the construction process 1 of the present invention;

[0033] Figure 4 It is a three-dimensional diagram of the second construction process of the present invention;

[0034] Figure 5It is a front view of the second construction process of the present invention;

[0035] Figure 6 It is a three-dimensional diagram of the construction process three of the present invention;

[0036] Figure 7 It is a front view of the construction process three of the present invention;

[0037] Figure 8 It is a three-dimensional diagram of the construction process four of the present invention;

[0038] Fig. 9 It is a three-dimensional diagram of the construction process five of the present invention;

[0039] Fig.10 It is a front view of the construction process five of the present invention;

[0040] Fig.11 It is a three-dimensional diagram of the construction process six of the present invention;

[0041] Fig.12 It is a three-dimensional diagram of the construction process seven of the present invention;

[0042] Fig.13 It is a front view of the construction process seven of the present invention;

[0043] Fig.14 It is a three-dimensional diagram of the construction process eight of the present invention;

[0044] Fig.15 It is a front view of the construction process eight of the present invention;

[0045] Fig.16 It is a three-dimensional diagram of the construction process nine of the present invention;

[0046] Fig.17 It is a three-dimensional diagram of the construction process 10 of the present invention;

[0047] Fig.18 It is a front view of the construction process 10 of the present invention;

[0048] Fig.19 It is a three-dimensional diagram of the construction process eleven of the present invention;

[0049] Fig. 20 It is a front view of the construction process eleven of the present invention;

[0050] Fig.21 It is a three-dimensional diagram of the construction process 12 of the present invention;

[0051] Fig. 22 It is a front view of the construction process 12 of the present invention;

[0052] Fig.23 It is a three-dimensional diagram of the construction process 13 of the present invention;

[0053] Fig.24 It is a front view of the construction process 13 of the present invention;

[0054] Fig.25 It is a three-dimensional diagram of the construction process 14 of the present invention;

[0055] Fig.26 It is a front view of the construction process 14 of the present invention;

[0056] Fig. 27 is a front view of the second embodiment of the present invention;

[0057] Fig.28 This is a cross-sectional view of the internal structure of the anti-fall box of the present invention.

[0058] 1. Steel pipe pile; 2. Support rod; 3. Hanging rod; 4. Lower crossbeam; 5. Steel cage; 6. Formwork; 7. Upper crossbeam; 8. Square wood; 9. Bamboo plywood; 10. Anti-fall box; 11. Rope reel; 12. Locking rod; 13. Detection wheel; 14. Insert rod; 15. Tension spring; 16. First gear; 17. Slot; 18. Second gear; 19. Baffle; 20. Switch; 21. Alarm device; 22. PVC pipe; 23. Connecting rope; 24. Pile cap; 25. Pull rope; 26. Alarm device. DETAILED DESCRIPTION

[0059] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0060] Embodiment 1

[0061] like Figure 1-Figure 26 As shown, this embodiment proposes a high water level and low tidal range pile cap hanging formwork construction method, comprising the following steps:

[0062] S1: Casting: Cast concrete in the steel pipe pile 1, and embed vertical support rods 2 in the concrete during casting; two support rods 2 are embedded in each steel pipe pile as vertical supports, and the support rods 2 are made of steel.

[0063] S2: Suspension rod: A suspension rod 3 with adjustable length is installed on the support rod 2, and a lower crossbeam 4 is hung at the bottom of the suspension rod 3. The height of the lower crossbeam 4 is higher than the water level at the location after high tide;

[0064] S3: Laying the plate: Laying the plate on the lower beam 4, the plate is provided with through holes corresponding to the steel pipe piles 1;

[0065] S4: Tie the reinforcement: install the reinforcement cage 5 on the pad, and install the template 6 on the side of the reinforcement cage 5;

[0066] S5: Lowering: After the water level drops, adjust the length of the suspension rod 3, lower the steel cage 5 to the designed position, and pour concrete into the formwork 6;

[0067] S6: Dismantling: After the concrete pouring is completed, the pile cap 24 is formed, and the support rod 2, the suspension rod 3, the formwork 6 and the pad are dismantled.

[0068] S7: Repair: Use high-grade mortar to seal the holes on the pile cap.

[0069] Pipe piles are a type of foundation pile commonly used in construction. They are generally made of reinforced concrete, steel pipes or prestressed materials. They are mostly circular in shape and are mainly used for foundation reinforcement and supporting the gravity of structures. Before the construction of the pile cap, steel pipe piles need to be placed at designated locations. For steel pipe piles, only the steel pipes are lowered without pouring pile core concrete.

[0070] The upper end of the support rod 2 is fixed with an upper cross beam 7, and the upper cross beam 7 is provided with a through hole for the suspension rod 3 to pass through. The suspension rod 3 is fixed to the upper cross beam 7 by bolts, and the suspension rod 3 can be raised and lowered on the upper cross beam 7 by rotating the bolts. After the concrete in the steel pipe pile 1 reaches the design strength, the upper cross beam 7 is welded to the two support rods 2, and the suspension rod 3 is provided with a thread on the outside. After the suspension rod 3 passes through the through hole provided in the upper cross beam 7, it is fixed to the suspension rod 7 by bolts, and the bottom of the suspension rod 3 is used to hang the construction platform.

[0071] In S2, the lower cross beam 4 is welded on land and fixed to the bottom of the hanger 3 by bolts. The lower cross beam 4 is suspended on the upper cross beam 7 by the hanger 3. According to the water level conditions, the hanger 3 is lifted to a high position and tightened with bolts in this installation so that the construction of the lower cross beam 4 is not affected by seawater.

[0072] In S3 , the pad includes a square timber 8 , which is fixed to the lower cross beam 4 , and also includes a bamboo plywood 9 laid on the upper surface of the square timber 8 .

[0073] The lower cross beam 4 is used as a support system, and square wood 8 is installed on the lower cross beam 4 as a support, and is tied firmly with wire to prevent it from floating when put into water later. After the square wood 8 is installed, bamboo plywood 9 is laid on the square wood 8. The bamboo plywood 9 is laid at the designed position of the pile cap 24 as a bottom template. Holes are opened in the middle of the bamboo plywood 9 and the square wood 8, that is, at the position corresponding to the steel pipe pile 1, to clamp the pile head of the steel pipe pile 1 after the bottom template is lowered as a whole in the later stage to prevent leakage.

[0074] In S4, after the bottom template is installed, the steel cage 5 and the template 6 on the side of the steel cage 5 are installed according to the design requirements, and the template 6 is fixed to the bamboo plywood 9 by bolts to preliminarily reinforce the template 6. At this point, the early construction process is completed.

[0075] In S5, after the lowering is completed, the upper surface of the bamboo plywood 9 is lower than the upper surface of the steel pipe pile 1. At the same time, before pouring concrete, the template 6 is corrected. After the correction is completed, concrete is poured into the template 6 to form a pile cap 24.

[0076] In S6, after the pile cap 24 is formed, the removal steps are as follows: first remove the formwork 6, after removing the formwork 6, rotate the bolts on the hanger 3, lower the hanger 3, so that the bamboo plywood 9 is separated from the concrete at the bottom of the steel cage 5, and then remove the bamboo plywood 9 and the square wood 8, and further lower the hanger completely, and then remove the lower beam 4, and finally remove the support rod 2 embedded in the concrete. Since the upper beam 7 is welded to the support rod 2, the upper beam 7 and the support rod 2 are removed together, and the support rod 2 is generally cut off with a cutting machine.

[0077] In S7, holes and uneven places are easily formed on the pile cap 24 after removal, and holes are reserved after the hanger 3 is removed. These places are sealed with high-grade mortar, and the construction is completed.

[0078] The outer wall of the suspension rod 2 is sleeved with a PVC pipe 22, which facilitates the suspension rod 2 to be pulled out of the concrete after the concrete is poured.

[0079] A connecting rope 23 is fixed between the upper cross beam 7 and the bottom of the suspension rod 2. After the suspension rod 23 is completely lowered, the suspension rod 2 is pulled out of the concrete and falls into the water. The suspension rod 2 can be easily lifted out through the connecting rope 23.

[0080] Embodiment 2

[0081] like Figure 27-Figure 28 As shown, other structures are the same as those in the first embodiment, except that, in this embodiment, the problem of preventing the lower beam or the formwork platform from falling is taken into consideration.

[0082] Before pouring concrete in the formwork 6, an anti-fall mechanism is used to prevent the lower cross beam 4 from falling suddenly. The anti-fall mechanism includes an anti-fall box 10 fixed on the support rod 2. A rope-collecting wheel 11 is arranged in the anti-fall box 10. The rope-collecting wheel 11 is rotatably connected to the anti-fall box 10. A pull rope 25 is wound around the rope-collecting wheel 11. One end of the pull rope 25 is fixed to the lower cross beam 4. A detection component capable of detecting the rotation speed of the rope-collecting wheel 11 is arranged on one side of the rope-collecting wheel 11. The detection component also includes a locking rod 12 capable of limiting the movement of the rope-collecting wheel 11. The locking rod 12 cooperates with the detection component.

[0083] The detection component can detect the abnormal rotation of the rope-collecting wheel 11, thereby driving the locking rod 12 to extend, locking the rope-collecting wheel 11, and preventing the lower crossbeam 4 and the bottom platform from falling.

[0084] The detection assembly includes a detection wheel 13 connected to the rope collecting wheel 11. The detection wheel 13 is rotatably connected to the anti-fall box 10 through a rotating shaft. The detection wheel 13 has a plurality of plug rods 14 sliding radially. The plug rods 14 and the detection wheel 13 are fixed by a tension spring 15. The detection wheel 13 is coaxially sleeved with a first gear 16. The first gear 16 rotates freely. A slot 17 is provided on the first gear 16 for inserting the plug rod 14. The first gear 16 is connected to the locking rod 12.

[0085] After the lower cross beam 4 falls rapidly and drives the rope taking wheel 11 to rotate rapidly, the rope taking wheel 11 drives the detection wheel 13 to rotate rapidly. At this time, the centrifugal force of the detection wheel 13 is greater than the elastic force of the tension spring 15, and the insertion rod 14 slides in the direction away from the center of the detection wheel 13 and is then inserted into the slot 17. At this time, the detection wheel 13 drives the first gear 16 to rotate through the insertion rod 14, and the first gear 16 drives the locking rod 12 to lock the rope taking wheel 11.

[0086] The rope collecting wheel 11 is coaxially sleeved with a second gear 18, the locking rod 12 cooperates with the second gear 18, the second gear 18 meshes with the detection wheel 13, and a baffle 19 capable of limiting the movement of the locking rod 12 is connected to one side of the first gear 16. The baffle 19 has a rack, which meshes with the teeth of the first gear 16, and the locking rod 12 is fixed to the anti-fall box 10 by a spring. When the first gear 16 rotates, the baffle 19 is driven to move to one side, the baffle 19 no longer limits the movement of the locking rod 12, the spring is no longer compressed, and the spring drives the locking rod 12 to insert into the adjacent teeth of the second gear 18, locking the second gear 18, and the second gear 18 is coaxially fixed with the rope collecting wheel 11, thereby driving the rope collecting wheel 11 to lock, preventing the pull rope 25 from continuing to move, and preventing the lower crossbeam 4 from falling.

[0087] A switch 20 is fixed to one side of the baffle 19, and the switch 20 is electrically connected to the alarm device 26. The baffle 19 is slidably connected to the anti-fall box 10 through a compression spring 21. When the first gear 16 rotates, it drives the baffle 19 to move to one side, and the baffle 19 will touch the switch 20 to open. The switch 20 is connected in series with the alarm device 26, so the alarm device 26 starts to sound an alarm and flash a warning light. A power supply is provided in the anti-fall box 10 to power the alarm device 26.

[0088] The switch 20 is specifically a push-type spring switch, which is usually composed of a push button, a spring, a fixing seat and a conductive contact. The push button is usually made of plastic or metal and has a certain pressing performance and mechanical strength. The function of the spring is to allow the button to automatically reset and ensure the elasticity of the press. The fixing seat is used to fix the button and the spring to ensure that their positions do not change. The conductive contact is the key part of the connection circuit. By pressing the button, the contact is connected or disconnected to realize the function of the switch.

[0089] The rotating shaft of the rope-collecting wheel 11 extends out of the anti-fall box 10, so as to facilitate the subsequent adjustment of the pull rope 25 through the rotating shaft.

[0090] The anti-fall box 10 is connected to the upper cross beam 7 in advance by welding or bolting.

[0091] The method for using the support mechanism comprises the following steps:

[0092] S1: After the lower cross beam 4 at the bottom of the suspension rod 2 is installed, the pull rope 25 is pulled to fix the bottom of the pull rope 25 to the lower cross beam 4;

[0093] S2: After the lower crossbeam 4 suddenly falls, the insertion rod 14 in the detection wheel 13 is inserted into the slot 17 under the action of centrifugal force. At this time, the detection wheel 13 drives the first gear 16 to rotate through the insertion rod 14, and the first gear 16 drives the baffle 19 to move away. The locking rod 12 is inserted into the second gear 18 under the action of the spring to lock the rope-collecting wheel 11;

[0094] S3: After the staff comes over to handle, they lift the locking rod 12 upwards, and the baffle 19 is reset under the action of the compression spring 21, and the rope wheel 11 can continue to release the rope.

[0095] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high water level and low tidal range pile cap formwork construction method, characterized in that: The following steps are involved: S1: Casting: Cast concrete into the steel pipe pile (1) and embed vertical support rods (2); S2: Suspension rod: a suspension rod (3) with adjustable length is installed on the support rod (2), a lower crossbeam (4) is hung at the bottom of the suspension rod (3), and the height of the lower crossbeam (4) is higher than the water level at the location after high tide; S3: Laying the plate: Laying a pad on the lower cross beam (4), the pad having through holes corresponding to the steel pipe piles (1); S4: Tie the reinforcement: install the reinforcement cage (5) on the base plate, and install the template (6) on the side of the reinforcement cage (5); S5: Lowering: After the water level drops, adjust the length of the suspension rod (3), lower the steel cage (5) to the designed position, and pour concrete into the formwork (6); S6: Dismantling: After the concrete pouring is completed, the pile cap (24) is formed, and the support rod (2), the suspension rod (3), the formwork (6) and the pad are dismantled; S7: Repair: Seal the holes on the pile cap.

2. The high water level and low tidal range pile cap hanging formwork construction method according to claim 1 is characterized in that: An upper crossbeam (7) is fixed to the upper end of the support rod (2), and the upper crossbeam (7) is provided with a through hole for the suspension rod (3) to pass through, and the suspension rod (3) is fixed to the upper crossbeam (7) by bolts.

3. The high water level and low tidal range pile cap hanging formwork construction method according to claim 1 is characterized in that: The pad includes a square wood (8), the square wood (8) is fixed to the lower cross beam (4), and also includes a bamboo plywood (9) laid on the upper surface of the square wood (8).

4. The high water level and low tidal range pile cap hanging formwork construction method according to claim 3 is characterized in that: In S6, the dismantling steps are as follows: first, the formwork (6) is dismantled, the suspension rod (3) is lowered, the bamboo plywood (9) is separated from the concrete at the bottom of the steel cage (5), the bamboo plywood (9), the square wood (8) and the lower crossbeam (4) are dismantled, and finally the support rod (2) embedded in the concrete is dismantled.

5. The high water level and low tidal range pile cap hanging formwork construction method according to claim 1 is characterized in that: The outer wall of the suspension rod (2) is sleeved with a PVC pipe (22).

6. The high water level and low tidal range pile cap hanging formwork construction method according to claim 2 is characterized in that: A connecting rope (23) is fixed between the upper cross beam (7) and the bottom of the suspension rod (2).

7. The high water level and low tidal range pile cap hanging formwork construction method according to claim 1 is characterized in that: Before pouring concrete in the formwork (6), an anti-fall mechanism is used to prevent the lower cross beam (4) from falling suddenly. The anti-fall mechanism includes an anti-fall box (10) fixed on the support rod (2). A rope-collecting wheel (11) is arranged in the anti-fall box (10). A pull rope (25) is wound around the rope-collecting wheel (11). One end of the pull rope (25) is fixed to the lower cross beam (4). A detection component capable of detecting the rotation speed of the rope-collecting wheel (11) is arranged on one side of the rope-collecting wheel (11). The anti-fall mechanism also includes a locking rod (12) capable of limiting the movement of the rope-collecting wheel (11). The locking rod (12) cooperates with the detection component.

8. The high water level and low tidal range pile cap formwork construction method according to claim 7 is characterized in that: The detection assembly comprises a detection wheel (13) connected to the rope-collecting wheel (11); the detection wheel (13) is provided with a plurality of insertion rods (14) which slide radially; the insertion rods (14) and the detection wheel (13) are fixed to each other via tension springs (15); the detection wheel (13) is coaxially provided with a first gear (16); the first gear (16) is provided with a slot (17) for inserting the insertion rod (14); the first gear (16) is connected to the locking rod (12).

9. The high water level and low tidal range pile cap hanging formwork construction method according to claim 8, characterized in that: The rope collecting wheel (11) is coaxially sleeved with a second gear (18), the locking rod (12) cooperates with the second gear (18), the second gear (18) is meshed with the detection wheel (13), one side of the first gear (16) is connected with a baffle (19) capable of limiting the movement of the locking rod (12), and the locking rod (12) and the anti-fall box (10) are fixed by a spring.

10. The high water level and low tidal range pile cap formwork construction method according to claim 9, characterized in that: A switch (20) is fixed on one side of the baffle (19), and the switch (20) is electrically connected to an alarm device (26). The baffle (19) is slidably connected to the anti-fall box (10) via a compression spring (21).

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