Reinforcing system for large steel die of ultra-long, ultra-high and ultra-thick reinforced concrete continuous wall
By using a rectangular truss support system and a three-stage water-stop pulling screw in the ultra-long, ultra-high and super-thick reinforced concrete continuous wall, the problems of formwork stability and construction quality are solved, and efficient construction process and safe structural forming are achieved.
Patent Information
- Application Number
- CN202422400175.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-30
AI Technical Summary
In the prior art, during the pouring process of ultra-long, ultra-high and super-thick reinforced concrete continuous walls, the flatness, deformation and stability of the formwork are difficult to ensure, resulting in the impact of construction quality and structural safety. The traditional triangular steel frame reinforcement scheme is prone to loosening, resulting in serious mismatch and slurry running.
Rectangular truss support system is used instead of the triangle support, including the steel formwork of the guide wall and the wall. The truss and the steel formwork are fixed by bolts. The adjustable bottom bracket and three-stage water stop pulling screw are installed on the outside, and a cable wind rope and ground anchor pull ring are combined to ensure the stability and perpendicularity of the formwork.
It improves the stiffness and stability of the formwork, reduces the impact of concrete side pressure during construction, ensures the construction quality and structural safety of the wall, simplifies construction operations, and improves construction efficiency.
Smart Images
Figure CN223135657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reinforced concrete formwork engineering, and particularly relates to a reinforcement system for a large steel formwork of an extra-long, extra-high and extra-thick reinforced concrete continuous wall. Background Technique
[0002] In the construction of engineering buildings, for the extra-long, extra-high and extra-thick reinforced concrete continuous wall with greater danger, the lateral pressure of concrete during the pouring process will have a greater adverse impact on the formwork, and the flatness, deformation and stability of the formwork directly affect the construction quality and structural safety of the wall. Therefore, steel formwork is generally used for pouring, and the construction is difficult.
[0003] At present, for the extra-long, extra-high and extra-thick reinforced concrete formwork engineering, there is no mature formwork reinforcement scheme. Traditionally, triangular steel frames are used for reinforcement. The diagonal fastening bolts of the triangular steel frames are easy to loosen. When the concrete pouring speed is too fast, the lateral pressure on the formwork is large, and obvious staggered platforms and slurry leakage and root rot phenomena are extremely easy to occur at the construction joints, which have a greater impact on the appearance and entity quality of the concrete. Content of the Utility Model
[0004] The purpose of the utility model is to provide a reinforcement system for a large steel formwork of an extra-long, extra-high and extra-thick reinforced concrete continuous wall, so as to overcome the deficiencies of the prior art.
[0005] The technical scheme adopted by the utility model is that a reinforcement system for a large steel formwork of an extra-long, extra-high and extra-thick reinforced concrete continuous wall. The continuous wall is arranged on a foundation raft. The system includes a guide wall and a wall body. The guide wall is pre-cast into a stepped shape. The width of the upper section of the guide wall is the same as the width of the wall body, and steel formworks for forming the wall body are arranged on both sides of the guide wall. Vertical trusses are arranged on the back side of the steel formworks. The trusses and the steel formworks are connected and fixed by bolt connectors. An adjusting bottom support is arranged at the lower end of the outer truss. The adjusting bottom support includes a lead screw. An adjusting nut is screwed on the lead screw. Short rods are symmetrically fixed on the outer wall of the adjusting nut. A bottom plate is fixedly arranged at the lower end of the lead screw. The bottom plate is welded and fixed on a pre-buried top plate pre-buried in the foundation raft. The pre-buried top plate is flush with the top of the foundation raft. A pull ring is arranged at the upper part of the steel formwork, and a guy rope is connected to a ground anchor pull ring arranged on the ground. Three-section water-stop tension bolts are connected at intervals between the steel formworks. Gaskets and screwed nuts are arranged at the end sides of the three-section water-stop tension bolts to press the trusses. A plurality of vertical steel pipes are arranged on the outer end side of the trusses. The vertical steel pipes at the same height are connected and fixed by steel pipe fasteners to a horizontally arranged transverse steel pipe.
[0006] Further, the steel formwork is horizontally assembled by multiple steel formwork panels. Each single steel formwork panel is vertically assembled by multiple formwork blocks. When vertically assembling, the reserved holes on both sides of the formwork are adjusted to be flush, and conical positioning pins are driven in. When horizontally assembling, cylindrical positioning pins are driven in and locked with pin pieces.
[0007] Further, the panel of the steel formwork is made of ordinary hot-rolled steel plate with a thickness of 6 mm, the rib plate is a flat iron with a thickness of 100 * 10 mm, the flange is a flat iron with a size of 100 * 14 mm, and the main rib is a single channel steel of 10#.
[0008] Further, the truss includes two groups of back-to-back double channel steels arranged in parallel, and single channel steels for vertical and diagonal braces are connected between the two groups of double channel steels. The two ends of the single channel steel are respectively welded and connected in the space between the two groups of double channel steels.
[0009] Further, the bolt connecting piece includes a clamping piece for clamping the main rib of the steel formwork. One end of the clamping piece is connected to a screw rod, and a backing plate and a nut are arranged at the other end of the screw rod to clamp the double channel steel inside the truss.
[0010] Further, the three-piece water-stop tie rod includes an intermediate section screw rod, a tapered sleeve and an end-side screw rod.
[0011] Further, guide wall formworks are arranged on both sides of the guide wall, vertical limiting steel bars are arranged in the foundation raft slab. The lower part of the vertical limiting steel bar is welded and connected to the raft steel bars, and the upper part abuts against the outer side of the guide wall formwork. The upper part of the vertical limiting steel bar is vertically welded and connected to the horizontal limiting steel bar, which abuts against the lower end of the guide wall formwork. A support plate is supported on the upper part of the guide wall formwork on the side far from the wall. One end of the support plate is connected to an inclined bracing steel bar, and the other end of the inclined bracing steel bar is welded and connected to the raft steel bars.
[0012] The utility model has the following beneficial effects:
[0013] 1. Using a rectangular truss support system instead of a triangular support system can not only ensure the stiffness requirements for the one-time pouring of the steel formwork, but also save space, reduce the weight of the steel formwork, avoid the conflict problem between the triangular support and the external scaffold, and facilitate the stable placement of the steel formwork during construction and the adjustment of the overall verticality after installation.
[0014] 2. The components of this reinforcement system are simple to manufacture and the construction operation is simple. The construction speed is fast, and it can be recycled, reducing the adverse impact of the lateral pressure of concrete during pouring on the formwork, and meeting the code requirements for the construction quality and structural safety of the wall to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a structural schematic diagram of the utility model;
[0016] Figure 2 is Figure 1 a partial enlarged view of the adjusting bottom bracket in
[0017] Figure 3 is Figure 1 a partial enlarged view of the bolt connecting piece in
[0018] Figure 4 a front view of the adjusting bottom bracket of the utility model;
[0019] Figure 5 is the front view of the truss of the present utility model;
[0020] Figure 6 is the side view of the truss of the present utility model;
[0021] Figure 7 is the structural schematic diagram of the guide wall construction of the present utility model;
[0022] Figure 8 is the front view of the three - section water - stop tie rod of the present utility model.
[0023] In the figure: 1. Guide wall; 11. Guide wall formwork; 12. Guide wall tie rod; 13. Galvanized water - stop steel plate; 2. Wall; 3. Steel formwork; 31. Panel; 32. Rib plate; 33. Flange; 34. Main rib; 35. Clamping part; 4. Truss; 41. Double channel steel; 42. Single channel steel; 43. Vertical steel pipe; 5. Adjusting bottom support; 51. Adjusting nut; 52. Short rod; 53. Bottom plate; 6. Embedded top plate; 7. Cable wind rope; 8. Three - section water - stop tie rod; 81. Intermediate section screw rod; 82. Tapered sleeve; 83. End - side screw rod; 84. Limit pin; 9. Foundation raft; 91. Raft reinforcement; 92. Vertical limit reinforcement; 93. Horizontal limit reinforcement; 94. Support plate; 95. Inclined support reinforcement. Specific embodiments
[0024] In order to better understand the purpose, structure and function of the present utility model, the following further describes in detail a reinforcement system for a large steel formwork of an extra - long, extra - high and extra - thick reinforced concrete continuous wall of the present utility model with reference to the accompanying drawings.
[0025] As Figure 1 and Figure 2 shown, a reinforcement system for a large steel formwork of an extra - long, extra - high and extra - thick reinforced concrete continuous wall, the continuous wall is arranged on the foundation raft 9, including a guide wall 1 and a wall 2. The guide wall 1 is pre - cast into a stepped shape. The width of the upper section of the guide wall 1 is the same as the width of the wall 2, and steel formworks 3 for forming the wall 2 are arranged on both sides thereof. Vertical trusses 4 are arranged on the back side of the steel formworks 3. The trusses 4 and the steel formworks 3 are connected and fixed by bolt connectors. An adjusting bottom support 5 is arranged at the lower end of the outer truss 4, as Figure 4As shown in the figure, the adjustable base 5 includes a lead screw, on which an adjusting nut 51 is screwed. Symmetrically fixed to the outer wall of the adjusting nut are short rods 52. The lower end of the lead screw is fixedly provided with a bottom plate 53, and the bottom plate 53 is welded and fixed to the embedded top plate 6 embedded in the foundation raft 9. The embedded top plate 6 is flush with the top of the foundation raft 9. A pull ring is provided on the upper part of the steel formwork 3 to connect the guy rope 7 to the ground anchor pull ring set on the ground. The steel formwork 3 is connected at intervals by a three-section water-stop tie rod 8. A backing plate and a screwed nut are provided on the end side of the three-section water-stop tie rod 8 to press the truss 4. A plurality of vertical steel pipes 43 are provided on the outer end side of the truss 4. The vertical steel pipes 43 at the same height are connected and fixed by steel pipe fasteners to a horizontally arranged transverse steel pipe (not shown in the figure).
[0026] In this embodiment, the steel formwork 3 is horizontally assembled by multiple steel formwork panels. The width of a single steel formwork panel is 1.5 m, and the overall height is 9.55 m. It is composed of one 1500*5550 mm template and two 1500*2000 mm templates. The panel 31 of the steel formwork 3 is a 6 mm thick ordinary hot-rolled steel plate, the rib plate 32 is a 100*10 mm thick flat iron, the flange 33 is a 100*14 mm flat iron, and the main rib 34 is a 10# single channel steel.
[0027] When vertically assembling a single steel formwork panel, hoist the template into position, adjust the reserved holes on both sides to be flush, and drive in the conical positioning pins; when horizontally assembling, drive in the cylindrical positioning pins and lock them with pin pieces, realizing the rapid positioning and preliminary reinforcement of the post-installed formwork, and ensuring that the formwork will not shift or deform during subsequent construction.
[0028] The main function of the positioning pins is to connect and fix the formwork. During the splicing and fixing process of the formwork, it can improve the overall stiffness and stability of the formwork, ensure that the formwork will not shift or deform during construction, and can also quickly and accurately connect the various components of the large steel formwork, improve construction efficiency, and ensure construction quality and safety.
[0029] The outside of the formwork is supported by a 600 mm wide rectangular truss support system, as Figure 5 and Figure 6 shown. The truss 4 is welded and composed of 12# double channel steels 41 and 10# single channel steels 42. The double channel steels 41 are arranged back to back, with two groups arranged in parallel. The single channel steels 42 are vertically and obliquely inserted and fixed in the space between the double channel steels 41.
[0030] The truss 4 is connected to the steel formwork 3 by bolt connectors, as Figure 3 shown. The bolt connectors include a clamping member 35 that clamps the main rib 34 of the steel formwork 3. One end of the connecting screw of the clamping member 35 is provided with a backing plate and a nut to press the inner double channel steel 41 of the truss 4.
[0031] The adjustable sole bracket 5 provided at the bottom of the truss 4 can quickly adjust the perpendicularity between the truss 4 and the steel formwork 3. After the truss 4 is set out and positioned, the adjustable sole bracket 5 is welded and fixed to the top of the embedded roof slab 6. After the outer steel formwork 3 is adjusted, the three-piece waterstop tie rod 8 is used to adjust the perpendicularity and flatness of the inner steel formwork 3. In addition, a guy rope 7 is arranged every three meters on both sides of the upper part of the steel formwork to prevent the steel formwork 3 from shifting left and right.
[0032] As Figure 7 shown, a guide wall 1 with a height of 600 mm is poured in advance. The upper and lower sections of the guide wall 1 are both 300 mm high. Guide wall forms 11 are arranged on both sides of the guide wall 1. A guide wall tie rod 12 is connected between the upper guide wall forms 11. The position of the guide wall tie rod 12 is centered on the guide wall form 11 and is 180 mm below the top. A galvanized waterstop steel plate 13 is also arranged on the upper part of the guide wall 1. Vertical limit steel bars 92 are arranged in the foundation raft 9. The lower part of the vertical limit steel bars 92 is welded to the raft steel bars 91, and the upper part abuts against the outside of the guide wall form 11. The upper part of the vertical limit steel bars 92 is vertically welded to the horizontal limit steel bars 93 and abuts against the lower end of the guide wall form 11. A support plate 94 is supported on the upper part of the guide wall form 11 on the side away from the wall 2. One end of the support plate 94 is connected to the inclined support steel bar 95, and the other end of the inclined support steel bar 95 is welded to the raft steel bars 91.
[0033] By strictly controlling the flatness and perpendicularity of the installation of the guide wall form 11, ensuring the firmness of the formwork structure and the standard installation of the guide wall tie rod 12, it can be used as a standard and reference for the installation of the upper large formwork, reducing the time required for formwork adjustment and calibration, reducing the construction difficulty and improving the construction efficiency; at the same time, the reserved tie rods of the guide wall can increase the strength and stability of the connection at the bottom of the upper large steel formwork, reducing the root rot phenomenon caused by offset and mortar leakage.
[0034] As Figure 8 shown, a three-piece waterstop tie rod system is used. The three-piece waterstop tie rod 8 includes an intermediate section screw rod 81, a tapered sleeve 82 and an end side screw rod 83. The intermediate section screw rod 81 is made of precision rolled threaded steel, and the end side screw rod 83 uses a Ф30 screw rod, and the end side screw rod 83 can be recycled. The total length of the three-piece waterstop tie rod 8 is 2.2 m, the taper thread specification is M25D30, and the length is 125 mm. A 6 mm thick limit pin 84 is arranged in the middle. The vertical layout spacing of the three-piece waterstop tie rod 8 is 1.6 m, and a total of six are arranged vertically. The bottom one is a reserved screw rod for pouring concrete in the guide wall 1. The horizontal layout spacing is 1.5 m, which is the same modulus as the formwork.
[0035] The technology of the three-piece waterstop tie rod system reduces the use quantity of the waterstop tie rods while ensuring the stability of the large steel formwork, and can replace the formwork struts, ensuring the accurate forming size of the wall body, and can greatly save costs, effectively reduce the construction difficulty and improve the construction efficiency.
[0036] The utility model replaces the tripod support system with a rectangular truss support system, which can not only ensure the stiffness requirement for the one-time pouring of steel formwork, but also save space, reduce the weight of the steel formwork, avoid the conflict problem between the tripod and the external scaffold, and facilitate the stable placement of the steel formwork during construction and the adjustment of the overall verticality after installation.
[0037] It can be understood that the utility model is described by some embodiments. Those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the teaching of the utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.
Claims
1. A reinforcement system for a large steel formwork of a super-long, super-high and super-thick reinforced concrete continuous wall, characterized in that, The diaphragm wall is arranged on the foundation raft slab and includes a guide wall and a wall body. The guide wall is pre-cast in a stepped shape. The width of the upper section of the guide wall is the same as that of the wall body, and steel formworks for forming the wall body are arranged on both sides thereof. Vertical trusses are arranged on the back side of the steel formworks. The trusses and the steel formworks are connected and fixed by bolt connectors. An adjusting bottom bracket is arranged at the lower end of the outer truss. The adjusting bottom bracket includes a lead screw, on which an adjusting nut is screwed. Short rods are symmetrically fixed on the outer wall of the adjusting nut. The lower end of the lead screw is fixedly provided with a bottom plate, which is welded and fixed on the embedded top plate embedded in the foundation raft slab. The embedded top plate is flush with the top of the foundation raft slab. Pull rings are arranged on the upper part of the steel formworks, and guy ropes are connected to the ground-set ground anchor pull rings. Three-section water-stop tie bolts are connected at intervals between the steel formworks. Gaskets and screwed nuts are arranged at the end sides of the three-section water-stop tie bolts to compress the trusses. A plurality of vertical steel pipes are arranged on the outer end sides of the trusses. The vertical steel pipes at the same height are connected and fixed by steel pipe fasteners to horizontally arranged transverse steel pipes.
2. The reinforcement system for the large steel formwork of the extra-long, extra-high and extra-thick reinforced concrete continuous wall according to claim 1, characterized in that, The steel formworks are horizontally assembled by multiple steel formworks. A single steel formwork is vertically assembled by multiple formwork blocks. When vertically assembling, the formwork is adjusted so that the reserved holes on both sides are flush, and conical positioning pins are driven in. When horizontally assembling, cylindrical positioning pins are driven in and locked with pin pieces.
3. The reinforcement system for the large steel formwork of the extra-long, extra-high and extra-thick reinforced concrete continuous wall according to claim 1 or 2, characterized in that, The panel of the steel formwork is a 6-mm-thick ordinary hot-rolled steel plate, the rib plate is a 100*10-mm-thick flat iron, the flange is a 100*14-mm flat iron, and the main rib is a 10# single-channel steel.
4. The reinforcement system for the large steel formwork of the super-long, super-high and super-thick reinforced concrete continuous wall according to claim 3, characterized in that, The truss includes two groups of back-to-back double-channel steels arranged in parallel. Single-channel steels for vertical and diagonal bracing are connected between the two groups of double-channel steels. The two ends of the single-channel steel are respectively welded and connected in the space between the two groups of double-channel steels.
5. The reinforcement system for the large steel formwork of the extra-long, extra-high and extra-thick reinforced concrete continuous wall according to claim 4, characterized in that, The bolt connector includes a clamping part for clamping the main rib of the steel formwork. One end of a screw rod is connected to the clamping part, and a backing plate and a nut are arranged at the other end of the screw rod to compress the double-channel steel on the inner side of the truss.
6. The reinforcement system for the large steel formwork of the extra-long, extra-high and extra-thick reinforced concrete continuous wall according to claim 1, characterized in that, The three-section water-stop tie bolt includes an intermediate section screw rod, a tapered sleeve and an end-side lead screw.
7. The reinforcement system for the large steel formwork of the extra-long, extra-high and extra-thick reinforced concrete continuous wall according to claim 1, characterized in that, Guide wall formworks are arranged on both sides of the guide wall. Vertical limit steel bars are arranged in the foundation raft slab. The lower part of the vertical limit steel bars is welded and connected to the raft steel bars, and the upper part abuts against the outer side of the guide wall formwork. Horizontally arranged limit steel bars are vertically welded and connected to the upper part of the vertical limit steel bars and abut against the lower end of the guide wall formwork. A support plate is supported on the upper part of the guide wall formwork on the side away from the wall body. One end of an inclined support steel bar is connected to the support plate, and the other end of the inclined support steel bar is welded and connected to the raft steel bars.