Construction method for reserved hole plugging pull-up type formwork support

Abstract

The invention discloses a construction method for a reserved hole plugging pull-up type formwork support. The construction method comprises the following steps that reinforced concrete frame beams are arranged on the periphery of a reserved hole; placing a cross beam above the reserved hole; a reinforcing steel pipe is placed on the shelving cross beam; the upper ends of the split bolts are fixed to the upper portion of the upper reinforcing steel pipe; a formwork is erected on the lower portion of the reserved hole, and a plurality of battens are fixed to the lower portion of the formwork at intervals; the formwork is correspondingly provided with open holes according to the positions of the split bolts, and the split bolts penetrate through the open holes of the formwork and the gaps between the battens. Lower reinforcing steel pipes are arranged below the battens, and a split bolt penetrates through a gap between the two steel pipes of each group of lower reinforcing steel pipes; the lower end of the split bolt is fixed below the lower reinforcing steel pipe; and floor slab steel bars in the reserved hole area are bound, concrete is poured, and plugging of the reserved hole is completed. The invention solves the problem that the template support frame body of the plugging structure cannot be erected due to the fact that the process equipment occupies the reserved hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering construction, in particular to a reserved hole plugging and upward pulling type formwork erecting construction method. BACKGROUND

[0002] The underground auxiliary room of the test plant project is a core equipment functional area, and a large number of precise process equipment and supporting systems need to be installed inside. Based on the process requirement of equipment hoisting and positioning, a plurality of reserved holes of various specifications must be preset on the roof during the construction stage of the main concrete structure. However, it is found in the actual construction process that due to the dense layout of the equipment and the high positioning accuracy requirement, the final installation position of most process equipment overlaps with the reserved hole of the roof. The vertical projection of the equipment and the hole coincides, which causes the subsequent plugging operation to face a fundamental technical problem.

[0003] The traditional formwork support system relies on the erection of full-frame scaffolding as the force-bearing basis from the ground, but the equipment occupies the vertical space below the hole after positioning, and the support frame cannot be established. Using the scheme of cantilever support not only has the safety hidden danger of frame instability, but also may cause irreversible damage to the precise equipment due to construction vibration or falling objects. SUMMARY

[0004] The purpose of the present application is to provide a reserved hole plugging and upward pulling type formwork erecting construction method to solve the problem that the process equipment occupies the reserved hole and affects the erection of the plugging structure formwork support frame.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the present application is as follows: The first aspect of the present application provides a reserved hole plugging and upward pulling type formwork erecting construction method, comprising the following steps: S1: during the concrete pouring process of the underground auxiliary room structure, a reserved hole is set, and a reinforced concrete frame beam is set around the reserved hole; S2: a plurality of groups of resting cross beams are placed in parallel along the horizontal direction above the reserved hole, each group of resting cross beams being composed of two channel steels; S3: a plurality of groups of upper reinforcing steel pipes are placed in a vertical intersection manner and at intervals above the resting cross beams, each group of upper reinforcing steel pipes being composed of two steel pipes; a tension bolt is arranged at the intersection of the resting cross beam and the upper reinforcing steel pipe; the tension bolt passes through the gap between the two channel steels of each group of resting cross beams and the gap between the two steel pipes of each group of upper reinforcing steel pipes; the upper end of the tension bolt is fixed above the upper reinforcing steel pipe; S4: a formwork is erected at the lower part of the reserved hole, and a plurality of wooden squares are fixed at intervals below the formwork; the formwork is provided with an opening corresponding to the position of the tension bolt, and the tension bolt passes through the opening of the formwork and the gap between the wooden squares; S5: After the template is set up, a plurality of groups of lower reinforcing steel pipes are arranged below the wooden square according to the positions of the draw bolts, each group of lower reinforcing steel pipes is composed of two steel pipes, the draw bolt passes through the gap between the two steel pipes of each group of lower reinforcing steel pipes; the lower end of the draw bolt is fixed below the lower reinforcing steel pipe; S6: The floor steel bars in the reserved hole area are bound and the concrete is poured to complete the plugging of the reserved hole.

[0006] To optimize the above technical solution, the specific limitations also include: When the concrete frame beam is poured, a stepped reserved rebate is formed on the outer upper part close to the reserved hole, the width of the reserved rebate is half of the frame beam, and the height is consistent with the cast-in-place floor.

[0007] Each group of resting cross beams includes a first channel steel and a second channel steel, the webs of the first channel steel and the second channel steel are arranged in parallel, and standard holes are formed on the webs, the first channel steel and the second channel steel are connected by bolts and sleeves, the bolts pass through the first channel steel web standard hole, the sleeve, the second channel steel web standard hole in turn, and connect the channel steels of each group of resting cross beams, the sleeve is used to limit the distance between adjacent channel steels.

[0008] Further, the length of the resting cross beam is greater than the width of the reserved hole, the resting cross beam is erected on the reinforced concrete frame beam at both ends, the resting length of each end is not less than 500mm, and the distance between adjacent resting cross beams is not greater than 600mm.

[0009] As a preferred, before the template is set up in step S4, a foam tape is pasted along the bottom edge of the reserved rebate of the reserved hole to close the gap between the template and the bottom connection of the reserved rebate.

[0010] As a preferred, the upper end and the lower end of the draw bolt are fixed by a combined connector, the combined connector includes a nut and a mountain-shaped clamp, the inner side of the mountain-shaped clamp faces the reinforcing steel pipe, and the nut is used to tightly adhere to the outer side of the mountain-shaped clamp to fix the mountain-shaped clamp on the upper end and the lower end of the draw bolt.

[0011] When the template is fastened in step S5, the draw bolt located in the middle of the template is fastened to make the middle of the set template arch.

[0012] Before the reserved hole is poured with concrete for plugging, the reserved rebate is chiseled.

[0013] The second aspect of the present application provides an upper pulling type template for plugging a reserved hole, which includes a resting cross beam, an upper reinforcing steel pipe, a draw bolt, a template, a wooden square and a lower reinforcing steel pipe. A plurality of groups of resting cross beams are erected above the reserved hole, each group of resting cross beams is composed of two channel steels, and the two ends are supported on the reinforced concrete frame beam; a plurality of groups of upper reinforcing steel pipes are vertically and crossly arranged on the resting cross beams; a formwork is arranged at the lower part of the reserved hole, a plurality of wood squares are fixed below the formwork; a plurality of groups of lower reinforcing steel pipes are arranged below the wood squares, each group of lower reinforcing steel pipes is composed of two steel pipes; The resting cross beams, the upper reinforcing steel pipes, the formwork, the wood squares and the lower reinforcing steel pipes are fixed by a plurality of vertical tension bolts; the tension bolts pass through the two channel steels of each group of resting cross beams, the two steel pipes of each group of upper reinforcing steel pipes, the openings of the formwork, the gaps between the wood squares and the two steel pipes of each group of lower reinforcing steel pipes; the upper ends of the tension bolts are fixed above the upper reinforcing steel pipes, and the lower ends are fixed below the lower reinforcing steel pipes.

[0014] The tension bolt is a water stop bolt, and a water stop piece is welded in the middle.

[0015] Compared with the prior art, the beneficial effects of the present application are: The present application provides a reserved hole plugging up-pulling type formwork setting construction method, which sets the resting cross beams and reinforcing steel pipes above the reserved hole, and connects the formwork with the resting cross beams and reinforcing steel pipes by using the tension bolts, to form an air suspension structure, so that the formwork support does not need to occupy the ground space, and the formwork support problem when the process equipment and the reserved hole position coincide is solved. In addition, by setting the stepped reserved notches around the reserved hole, the mechanical engagement of the post-cast concrete and the cast concrete is realized, and the integrity of the structure is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The present application is a front view of the reserved hole plugging up-pulling type formwork. Figure 2 The present application is a side view of the reserved hole plugging up-pulling type formwork.

[0017] Figure 3 The present application is a plan view of the reserved hole plugging up-pulling type formwork.

[0018] In the figure: 1-concrete frame beam, 2-bearing assembly, 3-reserved hole, 4-formwork, 5-ordinary wood square, 6-cast-in-place floor slab, 7-reserved notch, 8-reinforcing steel pipe, 81-upper reinforcing steel pipe, 82-lower reinforcing steel pipe, 9-tension bolt, 10-resting cross beam, 11-mountain-shaped clamp. DETAILED DESCRIPTION

[0019] The technical solutions of the present application are further described in detail below in combination with specific embodiments: This invention provides a method for constructing a pull-up formwork support with pre-reserved holes, comprising the following steps: S1: During the concrete pouring process of the underground auxiliary building structure, a reserved hole 3 is set, and a reinforced concrete frame beam 1 is set around the reserved hole 3; S2: Several sets of support beams 10 are placed parallel to each other in the horizontal direction above the reserved hole 3. Each set of support beams 10 consists of two channel steels. S3: Several sets of upper reinforcing steel pipes 81 are placed on the supporting beam 10 at intervals perpendicular to the supporting beam 10. Each set of upper reinforcing steel pipes 81 consists of two steel pipes. Tie bolts 9 are installed at the intersection of the supporting beam 10 and the upper reinforcing steel pipes 81. The tie bolts 9 pass through the gap between the two channel steels of each set of supporting beams 10 and the gap between the two steel pipes of each set of upper reinforcing steel pipes 81. The upper end of the tie bolts 9 is fixed on the upper reinforcing steel pipes 81. S4: A template 4 is installed at the bottom of the reserved hole 3, and several wooden blocks 5 are fixed at intervals below the template 4; the template 4 has openings corresponding to the positions of the tie bolts 9, and the tie bolts 9 pass through the openings of the template 4 and the gaps between the wooden blocks 5. S5: After the template 4 is erected, several sets of lower reinforcing steel pipes 82 are set below the timber 5 according to the position of the tie bolts 9. Each set of lower reinforcing steel pipes 82 consists of two steel pipes. The tie bolts 9 pass through the gap between the two steel pipes in each set of lower reinforcing steel pipes 82. The lower end of the tie bolts 9 is fixed below the lower reinforcing steel pipes 82. S6: Tie the floor slab reinforcement in the area of ​​reserved hole 3 and pour concrete to complete the sealing of reserved hole 3.

[0020] The pre-reserved hole sealing pull-up formwork constructed according to this construction method, such as... Figure 1 As shown, it includes a supporting beam 10, an upper reinforcing steel pipe 81, tie bolts 9, a template 4, timber 5, and a lower reinforcing steel pipe 82; Several sets of supporting beams 10 are erected above the reserved opening 3. Each set of supporting beams 10 consists of two channel steels and is supported at both ends on the reinforced concrete frame beam 1. Several sets of upper reinforcing steel pipes 81 are set at intervals above the supporting beams 10 and perpendicular to them. Each set of upper reinforcing steel pipes 81 consists of two steel pipes. A template 4 is supported at the lower part of the reserved opening 3. Several wooden blocks 5 are fixed at intervals below the template 4. Several sets of lower reinforcing steel pipes 82 are set below the wooden blocks 5. Each set of lower reinforcing steel pipes 82 consists of two steel pipes.

[0021] like Figure 2As shown, the supporting beam 10, the upper reinforcing steel pipe 81, the template 4, the timber 5, and the lower reinforcing steel pipe 82 are connected and fixed by a number of vertical tie bolts 9. The tie bolts 9 pass through the gaps between the two channel steels of each set of supporting beams 10, between the two steel pipes of each set of upper reinforcing steel pipes 81, the openings on the template 4, the gaps between the timbers 5, and between the two steel pipes of each set of lower reinforcing steel pipes 82. The upper end of the tie bolt 9 is fixed above the upper reinforcing steel pipe 81, and the lower end is fixed below the lower reinforcing steel pipe 82.

[0022] When the concrete frame beam 1 is poured, a stepped pre-reserved tongue and groove 7 is formed on the upper part of the outer periphery near the pre-reserved hole 3. The width of the pre-reserved tongue and groove 7 is half that of the frame beam 1, and the height is the same as that of the cast-in-place floor slab 6. The pre-reserved tongue and groove 7 allows the pre-reserved hole 3 to form a floor slab on the frame beam 1 after the concrete is poured. This effectively bears the shear force and bending moment generated by the subsequent use load of the floor slab, avoiding stress concentration that could lead to joint cracking. At the same time, the larger width of the pre-reserved tongue and groove 7 provides a larger contact area for concrete penetration and bonding, enhancing the integrity and safety of the structure.

[0023] Each set of supporting beams 10 includes a first channel steel and a second channel steel. The webs of the first channel steel and the second channel steel are placed parallel to each other and standard holes are opened on the webs. The first channel steel and the second channel steel are connected by bolts and sleeves. The bolts pass through the standard holes in the webs of the first channel steel, the sleeves, and the standard holes in the webs of the second channel steel in sequence, and connect the channel steel of each set of supporting beams 10. The sleeves are used to limit the distance between adjacent channel steels.

[0024] like Figure 3 As shown, the length of the supporting beam 10 is greater than the width of the reserved hole 3. The two ends of the supporting beam 10 are erected on the reinforced concrete frame beam 1, and the supporting length of each end is not less than 500mm, ensuring that the two ends of the supporting beam 10 are stably supported on the reinforced concrete frame beam 1, avoiding cantilever or insufficient support. The spacing between adjacent supporting beams 10 is not greater than 600mm, reducing the span of the supporting beam 10, significantly reducing its own deflection, and also providing dense support points for the upper reinforcing steel pipe 8, ensuring that the formwork 4 provides sufficient upward tension when pouring concrete on the formwork 4.

[0025] Before setting up the template in step S4, foam tape 2 is pasted along the bottom edge of the pre-reserved hole 3 and the pre-reserved tongue and groove 7 to seal the gap at the bottom connection between the template 4 and the pre-reserved tongue and groove 7, so as to prevent grout leakage during concrete pouring in the pre-reserved hole 3 and contamination of the process equipment in the underground auxiliary building.

[0026] The upper end and the lower end of the pull bolt 9 are fixed by a combined connector, which includes a nut and a mountain-shaped card 11. The inner side of the mountain-shaped card 11 faces the reinforced steel pipe 8. The reinforced steel pipe 8 is clamped in the recessed part of the mountain-shaped card 11, so that the reinforced steel pipe 8 is better in contact with the mountain-shaped card 11. The mountain-shaped card 11 is fixed on the upper end and the lower end of the pull bolt 9 by using the nut to tightly adhere to the outer side of the mountain-shaped card 11. The elevation and the camber of the formwork 4 are controlled by loosening or tightening the nuts at both ends.

[0027] In some embodiments, the pull bolt 9 is a water stop bolt, wherein a water stop piece is welded in the middle, which ensures permanent waterproofing of the sealing area, and at the same time, the water stop piece is arranged in the concrete to enhance the adhesion of the pull bolt 9 and the concrete, and to achieve mechanical anchoring.

[0028] When the formwork is fastened in step S5, the pull bolt 9 located in the middle of the formwork 4 causes the middle of the erected formwork 4 to arch, and by actively applying prestress, the expected sinking deformation of the formwork 4 during concrete pouring is offset, ensuring the flatness of the floor surface after sealing is completed.

[0029] Before pouring concrete in the reserved hole 3, the reserved rebate 7 is chiseled to remove the weak layer containing cement slurry foam on the surface of the reserved rebate 7, so that the concrete poured on the reserved rebate 7 is better combined with the already poured concrete, and the overall structure is enhanced.

[0030] After the formwork 4 at the reserved hole 3 is erected, it should be verified by stacking load according to 1.2 times of the self-weight load of the floor, to ensure that the formwork 4 support system has sufficient support strength, and at the same time, the pre-pressing load can make the initial gap or looseness existing in the nodes of each component of the formwork 4 support system tightly contact, complete the plastic deformation in advance, avoid the deformation of this part when pouring concrete, and ensure the safety and reliability of subsequent construction.

[0031] The technical scheme of the device will be further described in combination with the specific implementation process as follows: During the concrete pouring process of the underground auxiliary room structure, different size holes are reserved on the roof in advance, and a reinforced concrete frame beam 1 is arranged around the reserved hole 3. After the construction of the underground auxiliary room structure is completed, the process equipment is hoisted relying on the reserved hole 3 on the roof, and the sealing of the reserved hole 3 is carried out after the hoisting of the process equipment is completed.

[0032] A plurality of groups of resting cross beams 10 are placed in parallel along the horizontal direction above the reserved hole 3, each group of resting cross beams 10 is composed of two channel steels, connected by M20 bolt and sleeve combination, and a group of channel steel connecting bolts is arranged every 1.5 m; a plurality of groups of upper reinforcing steel pipes 81 are arranged in parallel and spaced apart above the resting cross beams 10; a tension bolt 9 is arranged at the intersection of the resting cross beam 10 and the upper reinforcing steel pipe 81, if the waterproof requirement of the top plate of the reserved hole is required, the tension bolt 9 must use a water stop bolt, and the size of the water stop piece is 40*40*3 mm; the tension bolt 9 passes through the gap between the two channel steels of each group of resting cross beams 10 and the gap between the two steel pipes of each group of upper reinforcing steel pipes 81; the upper end of the tension bolt 9 is fixed above the upper reinforcing steel pipe 81; the formwork 4 and the batten 5 are assembled in advance, and the holes are opened in advance according to the position of the tension bolt 9, the thickness of the formwork 4 is not less than 15 mm, and the assembled formwork 4 and batten 5 are carried to the reserved hole 3; the foam tape 2 is pasted along the bottom edge of the reserved groove 7 of the reserved hole 3, and the formwork 4 is supported; the tension bolt 9 passes through the opening of the formwork 4 and the gap between the battens 5; after the formwork 4 is supported, a plurality of groups of lower reinforcing steel pipes 82 are arranged below the batten 5 according to the position of the tension bolt 9, each group of lower reinforcing steel pipes 82 is composed of two steel pipes, and the tension bolt 9 passes through the gap between the two steel pipes of each group of lower reinforcing steel pipes 82; the lower end of the tension bolt 9 is fixed below the lower reinforcing steel pipe 82; the upper end and the lower end of the tension bolt 9 are fastened by using a nut and a mountain-shaped clamp 11, and the formwork 4 is set to arch during the fastening process; the reserved groove 7 is chiseled and treated.

[0033] The load is verified according to 1.2 times of the self-weight load of the floor, to ensure the safety and reliability of subsequent construction; the floor reinforcement in the reserved hole 3 area is bound and the concrete is poured, and the sealing of the reserved hole 3 is completed.

[0034] The construction method provided by the application is mainly suitable for the reserved hole 3 with a width of less than 5 m, when the width of the reserved hole 3 is greater than 5 m, the necessary reinforcement of the resting cross beam 10 and the tension bolt 9 can be carried out according to the construction method, and the safety calculation is carried out simultaneously.

[0035] The above is only a preferred embodiment of the application, and does not limit the application in any form, any skilled person in the art can make any simple modification, equivalent replacement and improvement to the above embodiment according to the technical essence of the application without departing from the scope of the technical solution of the application.

Claims

1. A construction method for setting up a pull-up template for plugging a reserved hole, characterized in that, Includes the following steps: S1: During the concrete pouring process of the underground auxiliary building structure, a reserved hole (3) is set, and a reinforced concrete frame beam (1) is set around the reserved hole (3). S2: Several sets of support beams (10) are placed parallel to each other in the horizontal direction above the reserved hole (3). Each set of support beams (10) consists of two channel steels. S3: Several sets of upper reinforcing steel pipes (81) are placed on the supporting beam (10) at intervals perpendicular to the supporting beam (10), each set of upper reinforcing steel pipes (81) consists of two steel pipes; tie bolts (9) are set at the intersection of the supporting beam (10) and the upper reinforcing steel pipes (81); the tie bolts (9) pass through the gap between the two channel steels of each set of supporting beams (10) and the gap between the two steel pipes of each set of upper reinforcing steel pipes (81); the upper end of the tie bolts (9) is fixed on the upper reinforcing steel pipes (81); S4: A template (4) is installed at the lower part of the reserved hole (3), and several wooden blocks (5) are fixed at intervals below the template (4); the template (4) is provided with openings corresponding to the positions of the tie bolts (9), and the tie bolts (9) pass through the openings of the template (4) and the gaps between the wooden blocks (5). S5: After the template (4) is erected, several sets of lower reinforcing steel pipes (82) are set below the timber (5) according to the position of the tie bolts (9). Each set of lower reinforcing steel pipes (82) consists of two steel pipes. The tie bolts (9) pass through the gap between the two steel pipes of each set of lower reinforcing steel pipes (82). The lower end of the tie bolts (9) is fixed below the lower reinforcing steel pipes (82). S6: Tie the floor slab reinforcement in the reserved hole (3) area and pour concrete to complete the sealing of the reserved hole (3).

2. The construction method of reserving hole plugging up-drawing template setting according to claim 1, characterized in that: When the concrete frame beam (1) is poured, a stepped pre-reserved tongue and groove (7) is formed on the upper part of the outer periphery near the pre-reserved hole (3). The width of the pre-reserved tongue and groove (7) is half of the frame beam (1), and the height is the same as that of the cast-in-place floor slab (6).

3. The construction method of reserving hole plugging up-drawing template setting according to claim 1, characterized in that: Each set of supporting beams (10) includes a first channel steel and a second channel steel. The webs of the first channel steel and the second channel steel are placed parallel to each other and standard holes are opened on the webs. The first channel steel and the second channel steel are connected by bolts and sleeves. The bolts pass through the standard holes of the webs of the first channel steel, the sleeves, and the standard holes of the webs of the second channel steel in sequence, and connect the channel steel of each set of supporting beams (10). The sleeves are used to limit the distance between adjacent channel steels.

4. The construction method of reserving hole plugging up-drawing template setting according to claim 1, characterized in that: The length of the supporting beam (10) is greater than the width of the reserved hole (3). The two ends of the supporting beam (10) are erected on the reinforced concrete frame beam (1), and the supporting length of each end is not less than 500mm. The spacing between adjacent supporting beams (10) is not greater than 600mm.

5. The method for constructing a pull-up formwork support for sealing pre-reserved holes according to claim 1, characterized in that: Before setting up the template in step S4, stick foam tape (2) along the bottom edge of the pre-reserved tongue and groove (7) of the pre-reserved hole (3) to seal the gap at the bottom connection between the template (4) and the pre-reserved tongue and groove (7).

6. The method for constructing a pull-up formwork support for sealing pre-reserved holes according to claim 1, characterized in that: The upper and lower ends of the tie bolt (9) are fixed by a combination connector, which includes a nut and a mountain-shaped clip (11). The inner side of the mountain-shaped clip (11) faces the reinforcing steel pipe (8), and the nut is used to tightly attach the mountain-shaped clip (11) to the outer side of the mountain-shaped clip (11) to fix the mountain-shaped clip (11) to the upper and lower ends of the tie bolt (9).

7. The method for constructing a pull-up formwork support for sealing pre-reserved holes according to claim 1, characterized in that: When the template is tightened in step S5, the tie bolts (9) located in the middle of the template (4) are tightened to cause the middle of the supported template (4) to arch.

8. The method for constructing a pull-up formwork support for sealing pre-reserved holes according to claim 1, characterized in that: Before pouring concrete to seal the reserved hole (3), roughen the reserved tongue and groove (7).

9. The pre-reserved hole sealing pull-up formwork constructed by the construction method according to any one of claims 1 to 8, characterized in that, include: The supporting beam (10), upper reinforcing steel pipe (81), tie bolt (9), template (4), timber (5) and lower reinforcing steel pipe (82); Several sets of supporting beams (10) are erected above the reserved hole (3). Each set of supporting beams (10) consists of two channel steels and is supported at both ends on the reinforced concrete frame beam (1). Several sets of upper reinforcing steel pipes (81) are set at intervals above the supporting beams (10) and perpendicular to the supporting beams (10). Each set of upper reinforcing steel pipes (81) consists of two steel pipes. A template (4) is supported at the lower part of the reserved hole (3). Several wooden blocks (5) are fixed at intervals below the template (4). Several sets of lower reinforcing steel pipes (82) are set below the wooden blocks (5). Each set of lower reinforcing steel pipes (82) consists of two steel pipes. The supporting beam (10), upper reinforcing steel pipe (81), template (4), timber (5) and lower reinforcing steel pipe (82) are connected and fixed by several vertical tie bolts (9); the tie bolts (9) pass through the gap between the two channel steels of each set of supporting beams (10), the gap between the two steel pipes of each set of upper reinforcing steel pipes (81), the opening on the template (4), the gap between the timbers (5) and the gap between the two steel pipes of each set of lower reinforcing steel pipes (82); the upper end of the tie bolt (9) is fixed above the upper reinforcing steel pipe (81) and the lower end is fixed below the lower reinforcing steel pipe (82).

10. The pre-reserved hole sealing pull-up template according to claim 9, characterized in that: The tie bolt (9) is a water-stop bolt, with a water-stop plate welded to its middle.

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