Short-spacing double-wall formwork erecting method
By using the short-pitch double-wall support form method in concrete wall pouring, combining the inner support layer, outer formwork and multi-stage water-stop screw, the problem of limited support formwork for short-pitch double-wall support formwork is solved, and effective support and water-stop effect of concrete walls is achieved.
Patent Information
- Application Number
- CN202510318408.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2025-06-17
AI Technical Summary
When pouring concrete walls, short-pitch double-wall support forms are limited, which increases the difficulty of support and is difficult to meet the basic water stop requirements.
The short-pitch double-wall supporting formwork method is adopted. By setting up the inner support layer and the outer formwork, and using multi-stage water stop screws and vertical water stop steel plates, the water stop effect and structural stability of the concrete wall are ensured.
It realizes effective support and water stop for concrete walls under short spacing conditions, reduces the difficulty of support, and ensures the structural strength and water stop properties of concrete walls.
Smart Images
Figure CN120159185A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of concrete wall pouring, and particularly to a formwork support method for double walls with short spacing. Background Art
[0002] Concrete-poured walls are common building walls in modern architecture, mainly composed of concrete materials and steel bars. The steel bars include stress-bearing steel bars and distribution steel bars. The stress-bearing steel bars can enhance the tensile performance of the concrete materials and improve the bearing capacity and seismic performance of the poured walls. The distribution steel bars help to disperse the stress of the stress-bearing steel bars and prevent the extension of cracks. When pouring concrete walls, water-stop measures are taken to prevent water penetration and leakage into the building interior. Modern reinforced concrete walls all require water-stop measures. Common water-stop measures include water-stop strips, water-stop steel plates, and water-stop screws. Water-stop strips are applicable to secondary waterproof parts; water-stop steel plates are applicable to parts with extremely high waterproof requirements; water-stop screws are mainly used to fix the formwork and control the pouring thickness of the concrete, and at the same time play a role in water-stop. When the distance between two concrete-poured walls is too close, the formwork support for pouring the two concrete-poured walls will be greatly restricted, which will undoubtedly increase the support difficulty of the concrete-poured walls; on this basis, it will be more difficult to meet the basic water-stop requirements. Summary of the Invention
[0003] The purpose of the present invention is to solve the above problems and provide a formwork support method for double walls with short spacing.
[0004] The technical solution of the present invention is: A formwork support method for double walls with short spacing includes the following steps: ① Fabrication of the basic framework Set two side-by-side wall pouring areas according to the design area of the double walls with short spacing; arrange a steel bar cage in each wall pouring area; the steel bar cage is made by binding steel bars with binding wires; the steel bars include two rows of vertical stress-bearing steel bars and several horizontal distribution steel bars; the stress-bearing steel bars and the distribution steel bars intersect with each other and are fixed with binding wires; the length of the stress-bearing steel bars is equivalent to the designed height of the wall. ② Single pouring 2.1 Set up the internal support layer Lift and install the foam board and the internal formwork into the gap between the two wall pouring areas; the foam board is centered relative to the gap, and the internal formwork covers both sides of the foam board; both the internal formwork and the foam board are in a vertical state and serve as the internal support layer; during the concrete pouring, the internal support layer supports the inner side of the concrete-poured wall to facilitate the shaping of the concrete-poured wall. 2.2 Install multi-section water-stop screws The multi - section water - stop screw rod includes three conical connection nuts and two water - stop rods; drill hole A at the installation position of the multi - section water - stop screw rod on the inner formwork and the foam board; the diameter of hole A is equivalent to the maximum outer diameter of the conical connection nut to facilitate the passage of the conical connection nut; after establishing a threaded connection between a conical connection nut and the end of a water - stop rod, insert it into the interior of hole A from one side of the inner support layer; establish a threaded connection between the other water - stop rod and the conical connection nut in hole A from the other side of the inner support layer; a water - stop sheet is fixed in the middle of the water - stop rod to ensure the water - stop performance of the concrete - poured wall; adjust the position of the water - stop sheet to make the water - stop sheet centered relative to the wall - pouring area, ensuring that the water - stop effect of the water - stop sheet acts evenly on the concrete - poured wall body. Drill hole B on the outer formwork that matches the end of the water - stop rod; stand the outer formwork on the outer edge of the wall - pouring area, so that the outer ends of the two water - stop rods pass through hole B; use the remaining two conical connection nuts to establish a threaded connection with the ends of the water - stop rods from the outside of the outer formwork and abut against the outer side surface of the outer formwork to form a state of clamping the outer formwork for the external support of the concrete - poured wall; a pouring cavity corresponding to the wall - pouring area is formed between the inner formwork and the outer formwork, preparing for concrete pouring. 2.3 Concrete pouring Pour concrete into the interior of the pouring cavity. The concrete takes the shape of the pouring cavity and wraps the steel reinforcement cage body to ensure the structural strength of the concrete - poured wall; after waiting for the poured concrete to condense to a certain extent, remove the two conical connection nuts that cooperate with the outer formwork and the outer formwork to achieve form removal. ③ Multiple pourings Repeat the operation in step ② until the heights of the two concrete - poured walls reach the designed height, forming two concrete - poured walls with a short spacing.
[0005] Preferably, in step 2.2, the multi - section water - stop screw rod further includes two outer rods; before using the remaining two conical connection nuts to establish a threaded connection with the ends of the water - stop rods from the outside of the outer formwork, first use the outer rods to establish a threaded connection with the two conical connection nuts; the outer rods provide an additional operating end for the conical connection nuts, facilitating the operation of the multi - section water - stop screw rod; by rotating the outer rods, the conical connection nuts can be rotated to tighten or loosen them.
[0006] Preferably, in step ①, a vertical water - stop steel plate is fixed inside the steel reinforcement cage body to improve the water - stop effect of the concrete - poured wall.
[0007] Preferably, when performing step 2.2 for the first time, while drilling hole A, also drill hole C on the inner formwork and the foam board that corresponds and matches the tie bolt; hole C is located below all hole A; while drilling hole B, also drill hole D on the outer formwork that corresponds and matches the tie bolt; between step 2.2 and step 2.3, it also includes installing the tie bolt. The screw rod of the tie bolt is sequentially passed through hole Ding and hole Bing, and then a U-shaped clamp and a fixing nut are fitted at both ends of the screw rod; the U-shaped clamp is abutted against the outer side of the outer formwork by the fixing nut; the outer formwork is tightened by the tie bolt, which is beneficial to the stable forming of the concrete pouring cavity; In step 2.3, the tie bolt is removed.
[0008] Furthermore, before installing the tie bolt, a uniform pressing plate is erected on the outer side of the outer formwork; the uniform pressing plate is attached to the outer formwork; a hole Wu corresponding to and matching hole Ding is drilled on the uniform pressing plate; when installing the tie bolt, the screw rod of the tie bolt also passes through hole Wu; the uniform pressing plate evenly distributes the tightening force of the tie bolt to the outer formwork, ensuring the overall stability of the concrete pouring cavity.
[0009] Furthermore, before installing the tie bolt, a transverse square wood A is erected on the outer side of the uniform pressing plate; the transverse square wood A is attached to the uniform pressing plate; a hole Ji corresponding to and matching hole Wu is drilled on the transverse square wood A; when installing the tie bolt, the screw rod of the tie bolt also passes through hole Ji; the transverse square wood A horizontally and evenly acts the tightening force of the tie bolt on the uniform pressing plate, improving the overall stability of the concrete pouring cavity.
[0010] Furthermore, before installing the tie bolt, a portal clamp is installed outside the transverse square wood A; the two feet of the portal clamp are abutted against the transverse square wood A; a hole Geng corresponding to and matching hole Ji is drilled on the two feet of the portal clamp; when installing the tie bolt, the screw rod of the tie bolt also passes through hole Geng; the portal frame can increase the erection stability of the outer formwork and ensure the structural stability of the concrete pouring cavity.
[0011] Furthermore, before installing the tie bolt, a transverse square wood B is stuffed between the foot of the portal clamp and the outer formwork; the two sides of the transverse square wood B are respectively abutted against the foot of the portal clamp and the outer surface of the outer formwork; the transverse square wood B horizontally and evenly acts the tightening force of the tie bolt on the uniform pressing plate, improving the overall stability of the concrete pouring cavity.
[0012] The beneficial effects of the present invention are as follows: The short-spacing double-wall formwork support method of the present invention has the following advantages: (1) The present invention provides a short-spacing double-wall formwork support method, with internal formwork support for pouring the concrete wall body in the internal support layer and external formwork support for pouring the concrete wall body in the external formwork; the multi-section water-stop screw rod not only ensures the water-stop effect of the poured concrete wall body but also ensures the overall stability of the concrete pouring cavity; (2) In the present invention, a vertical water-stop steel plate is fixed inside the steel reinforcement cage body, improving the water-stop effect of the concrete pouring wall body. Description of the Drawings
[0013] Figure 1 is the implementation schematic diagram of the short-spacing double-wall formwork support method of the present invention; Figure 2 isFigure 1 Front view of Figure 3 is Figure 2 A - A sectional view of Figure 4 is Figure 2 B - B sectional view of Figure 5 Isometric view of the multi - section water - stop screw Figure 6 Is the flow chart of the short - spacing double - wall formwork support method of the present invention In the figure: 1. Wall pouring area, 2. Reinforcement cage body, 21. Stress - bearing steel bars, 22. Distribution steel bars, 23. Water - stop steel plate, 31. Foam board, 32. Inner formwork, 33. Hole A, 34. Hole C, 4. Multi - section water - stop screw, 41. Cone connection nut, 42. Water - stop rod, 43. Outer rod, 5. Outer formwork, 51. Hole B, 52. Hole D, 53. Equalizing plate, 54. Horizontal square wood A, 541. Hole F, 55. Door - shaped clamp, 551. Hole G, 6. Tie bolt, 61. Screw rod, 62. U - shaped clamp, 63. Fixed nut, 7. Horizontal square wood B. Detailed implementation mode
[0014] Example 1: Refer to Figure 1-6 , A short - spacing double - wall formwork support method includes the following steps: ① Fabrication of the basic framework Set two side - by - side wall pouring areas 1 according to the designed area of the short - spacing double - wall; Set a reinforcement cage body 2 in each wall pouring area 1; The reinforcement cage body 2 is made by binding steel bars with binding wires; The steel bars include two rows of vertical stress - bearing steel bars 21 and several horizontal distribution steel bars 22; The stress - bearing steel bars 21 and the distribution steel bars 22 cross each other and are fixed with binding wires; The length of the stress - bearing steel bars 21 is equivalent to the designed height of the wall. ② Single - time pouring 2.1 Set the inner support layer Lift and install the foam board 31 and the inner formwork 32 into the gap between the two wall pouring areas 1; The foam board 31 is centered relative to the gap, and the inner formwork 32 covers both sides of the foam board 31; Both the inner formwork 32 and the foam board 31 are in a vertical state and serve as the inner support layer; When pouring concrete, the inner support layer supports the inner side surface of the concrete - poured wall to facilitate the formation of the concrete - poured wall. 2.2 Install the multi - section water - stop screw 4 The multi - section water - stop screw 4 includes three conical connecting nuts 41 and two water - stop rods 42; drill holes Jia 33 at the installation positions of the multi - section water - stop screw 4 on the inner formwork 32 and the foam board 31; the diameter of the hole Jia 33 is equivalent to the maximum outer diameter of the conical connecting nut 41 to facilitate the passage of the conical connecting nut 41; after establishing a threaded connection between one conical connecting nut 41 and the end of one water - stop rod 42, insert it into the hole Jia 33 from one side of the inner support layer; establish a threaded connection between the other water - stop rod 42 and the conical connecting nut 41 in the hole Jia 33 from the other side of the inner support layer; a water - stop sheet is fixed in the middle of the water - stop rod 42 to ensure the water - stop performance of the concrete - poured wall; adjust the position of the water - stop sheet to make the water - stop sheet centered relative to the wall pouring area 1, ensuring that the water - stop effect of the water - stop sheet acts evenly on the concrete - poured wall body; Drill holes Yi 51 on the outer formwork 5 that match the ends of the water - stop rods 42; stand the outer formwork 5 on the outer edge of the wall pouring area 1, so that the outer ends of the two water - stop rods 42 pass through the holes Yi 51; use the remaining two conical connecting nuts 41 to establish a threaded connection with the ends of the water - stop rods 42 from the outside of the outer formwork 5 and abut against the outer side surface of the outer formwork 5 to form a state of clamping the outer formwork 5 for the external support of the concrete - poured wall; a pouring cavity corresponding to the wall pouring area 1 is formed between the inner formwork 32 and the outer formwork 5 to prepare for concrete pouring; 2.3 Concrete pouring Pour concrete into the pouring cavity. The concrete takes the shape of the pouring cavity and wraps the reinforcement cage body 2 to ensure the structural strength of the concrete - poured wall; after waiting for the poured concrete to condense to a certain extent, remove the two conical connecting nuts 41 and the outer formwork 5 that cooperate with the outer formwork 5 to achieve form removal; ③ Multiple pourings Repeat the operation in step ② until the heights of the two concrete - poured walls reach the designed height, forming two concrete - poured walls with a short spacing.
[0015] Compared with the prior art, the present invention provides a short - spacing double - wall formwork method. The inner support layer is used for the inner formwork of the concrete wall pouring, and the outer formwork 5 is used for the outer formwork of the concrete wall pouring; the multi - section water - stop screw 4 not only ensures the water - stop effect of the concrete wall after pouring but also ensures the overall stability of the concrete - pouring cavity.
[0016] In step 2.2, the multi - section water - stop screw 4 further includes two outer rods 43; before using the remaining two conical connecting nuts 41 to establish a threaded connection with the ends of the water - stop rods 42 from the outside of the outer formwork 5, first use the outer rods 43 to establish a threaded connection with the two conical connecting nuts 41; the outer rods 43 provide an additional operating end for the conical connecting nuts 41, facilitating the operation of the multi - section water - stop screw 4; by rotating the outer rods 43, the conical connecting nuts 41 can be rotated to tighten or loosen the conical connecting nuts 41.
[0017] In step ①, a vertical water-stopping steel plate 23 is fixed inside the steel cage 2 to improve the water-stopping effect of the concrete pouring wall.
[0018] When step 2.2 is performed for the first time, while drilling hole A 33, hole C 34 corresponding to the tension bolt 6 is also drilled on the inner template 32 and the foam board 31; hole C 34 is located below all hole A 33; while drilling hole B 51, hole D 52 corresponding to the tension bolt 6 is also drilled on the outer template 5; between step 2.2 and step 2.3, the tension bolt 6 is also installed; The screw rod 61 of the tension bolt 6 is passed through the hole D 52 and the hole C 34 in sequence, and then the two ends of the screw rod 61 are matched with a mountain clamp 62 and a fixing nut 63; the mountain clamp 62 is pressed against the outer side of the outer formwork 5 through the fixing nut 63; the outer formwork 5 is tightened by the tension bolt 6, which is conducive to the stable formation of the concrete pouring cavity; In step 2.3, the tension bolts 6 are removed.
[0019] Before installing the tension bolts 6, an equalizing plate 53 is erected on the outside of the outer formwork 5; the equalizing plate 53 is attached to the outer formwork 5; a hole E corresponding to the hole D 52 is drilled on the equalizing plate 53; when installing the tension bolts 6, the screw rod 61 of the tension bolts 6 also passes through the hole E; the equalizing plate 53 evenly distributes the tightening force of the tension bolts 6 to the outer formwork 5 to ensure the overall stability of the concrete pouring cavity.
[0020] Before installing the tension bolts 6, a transverse square timber armor 54 is erected on the outside of the pressure equalizing plate 53; the transverse square timber armor 54 is in contact with the pressure equalizing plate 53; a hole 541 corresponding to hole 541 is drilled on the transverse square timber armor 54; when installing the tension bolts 6, the screw rod 61 of the tension bolts 6 also passes through the hole 541; the transverse square timber armor 54 applies the tightening force of the tension bolts 6 laterally and evenly to the equalizing plate, thereby improving the overall stability of the concrete pouring cavity.
[0021] Before installing the tension bolts 6, a door-shaped clamp 55 is installed outside the horizontal square wood armor 54; the two feet of the door-shaped clamp 55 are against the horizontal square wood armor 54; the two feet of the door-shaped clamp 55 are drilled with holes 551 corresponding to the holes 541; when installing the tension bolts 6, the screw rod 61 of the tension bolts 6 also passes through the holes 551; the door-shaped frame can increase the vertical stability of the outer formwork 5 and ensure the structural stability of the concrete pouring cavity.
[0022] Before installing the tension bolts 6, insert a transverse square timber B 7 between the foot of the door-shaped clamp 55 and the outer formwork 5; the two sides of the transverse square timber B 7 are respectively against the foot of the door-shaped clamp 55 and the outer surface of the outer formwork 5; the transverse square timber B 7 applies the tensioning force of the tension bolts 6 laterally and evenly to the dividing plate, thereby improving the overall stability of the concrete pouring cavity.
Claims
1. A short-spacing double-wall formwork method, characterized in that: The following steps are involved: ①Making the basic skeleton Two side-by-side wall casting areas are set according to the design area of the short-spacing double wall; a steel cage is set in each wall casting area; the steel cage is made of steel bars and binding wires; the steel bars include two rows of vertical stress-bearing steel bars and several horizontal distribution steel bars; the stress-bearing steel bars and distribution steel bars are crossed and fixed with binding wires; the length of the stress-bearing steel bars is equivalent to the design height of the wall; ②Single pouring 2.1 Setting the inner support layer Hoist the foam board and inner formwork to the gap between the two wall casting areas; the foam board is centered relative to the gap, and the inner formwork covers both sides of the foam board; the inner formwork and foam board are both in a vertical state, serving as an inner support layer; 2.2 Install the multi-stage water stop screw The multi-section water-stop screw comprises three vertebral connection nuts and two water-stop rods; a hole is drilled at the installation position of the multi-section water-stop screw on the inner template and the foam board; the hole diameter of the hole is equivalent to the maximum outer diameter of the vertebral connection nut; after a vertebral connection nut is threadedly connected to the end of a water-stop rod, it is inserted into the hole from one side of the inner support layer; another water-stop rod is threadedly connected to the vertebral connection nut in the hole from the other side of the inner support layer; Drill a hole B on the outer template that matches the end of the water stop rod; stand the outer template on the outer edge of the wall casting area, and let the outward ends of the two water stop rods pass through hole B; use the remaining two cone connecting nuts to establish a threaded connection with the ends of the water stop rods from the outside of the outer template, and press against the outer surface of the outer template; a casting cavity corresponding to the wall casting area is formed between the inner template and the outer template; 2.3 Concrete pouring Pour concrete into the casting cavity; after the poured concrete solidifies to a certain extent, remove the two vertebral connecting mothers and the outer formwork that match the outer formwork; ③Multiple pouring Repeat step ② until the height of the two concrete pouring walls reaches the designed height.
2. The short-spacing double-wall formwork method according to claim 1, characterized in that: In step 2.2, the multi-section water-stop screw also includes two outer rods; before the remaining two vertebral connecting nuts are threadedly connected to the ends of the water-stop rods from the outside of the outer template, the outer rods are first used to establish a threaded connection with the two vertebral connecting nuts.
3. The short-spacing double-wall formwork method according to claim 1, characterized in that: In step ①, a vertical water-stop steel plate is fixed inside the steel cage.
4. The short-spacing double-wall formwork method according to claim 1, characterized in that: When performing step 2.2 for the first time, while drilling hole A, hole C is also drilled on the inner template and the foam board to match the tension bolts; hole C is located below all hole A; while drilling hole B, hole D is also drilled on the outer template to match the tension bolts; between step 2.2 and step 2.3, the tension bolts are also installed; Pass the screw rod of the tension bolt through hole D and hole C in sequence, and then match the mountain-shaped clamp and fixing nut at both ends of the screw rod; press the mountain-shaped clamp against the outer side of the outer formwork through the fixing nut; In step 2.3, remove the tension bolts.
5. The short-spacing double-wall formwork method according to claim 4, characterized in that: Before installing the tension bolts, a pressure equalizing plate is erected on the outside of the outer formwork; the pressure equalizing plate is attached to the outer formwork; holes Wu corresponding to hole Ding are drilled on the pressure equalizing plate; when installing the tension bolts, the screw rods of the tension bolts also pass through hole Wu.
6. The short-spacing double-wall formwork method according to claim 5, characterized in that: Before installing the tension bolts, erect a horizontal square wood A on the outside of the pressure equalizing plate; the horizontal square wood A is attached to the pressure equalizing plate; a hole J corresponding to hole E is drilled on the horizontal square wood A; when installing the tension bolts, the screw rod of the tension bolts also passes through hole J.
7. The short-spacing double-wall formwork method according to claim 6, characterized in that: Before installing the tension bolts, install a door-shaped clamp outside the horizontal square wood armor; the two legs of the door-shaped clamp are against the horizontal square wood armor; the two legs of the door-shaped clamp are drilled with holes corresponding to the holes; when installing the tension bolts, the screw rod of the tension bolts also passes through the holes.
8. The short-spacing double-wall formwork method according to claim 7, characterized in that: Before installing the tension bolts, insert a transverse square timber B between the door-shaped clamp foot and the outer formwork; the two sides of the transverse square timber B are respectively against the door-shaped clamp foot and the outer surface of the outer formwork.