Integral lifting type formwork structure for layered and segmented construction of ultra-high and ultra-thick concrete wall

Abstract

The utility model provides an integral lifting type formwork structure for layered and segmented construction of an ultrahigh and ultra-thick concrete wall body, which is used for pouring the ultrahigh and ultra-thick concrete wall body in a fixed building structure, and the ultrahigh and ultra-thick concrete wall body comprises two outer side walls which are poured firstly and a middle inner side wall which is poured later, an integral formwork is arranged on the outer side faces of the outer side walls, a pair of integral formworks which are deviated from each other are combined into an integral formwork through a supporting piece between the two outer side walls, and the integral formwork is hoisted and positioned. And finally, the two integral formworks and the internal integral formwork are locked through fasteners, so that the structure of the integral lifting type formwork is formed. The formwork erecting construction structure is simple and convenient in structure, low in construction operation difficulty, high in construction efficiency and low in construction cost, and has high construction application value.

Description

Technical Field

[0001] The utility model relates to the field of concrete wall construction, in particular to an integral lifting formwork structure used for layered and segmented construction of super-high and super-thick concrete walls. Background Art

[0002] With the rapid development of society, in order to better serve cancer patients, many hospitals are equipped with advanced radiotherapy equipment, namely heavy ion or proton linear accelerators. When using heavy ion or proton linear accelerators for radiotherapy, a large amount of electron radiation will be generated. In order to reduce the radiation hazard, the treatment area adopts an ultra-thick full concrete structure. First, ultra-thick concrete components belong to the category of large volume, and the control of large volume cracks has a great influence on the radiation protection effect of the wall, so vertical layered construction is often used; second, single-layer ultra-thick vertical components are generally high, but during construction, the one-time vertical construction height should not be too high, otherwise it is easy to cause major quality and safety hazards, and reasonable vertical segmentation is required.

[0003] Based on the above practical problems, it is necessary to adopt an overall automatic lifting formwork construction structure that is applied to the layered and segmented construction conditions of super-high and super-thick concrete walls to solve the above problems. Summary of the invention

[0004] The purpose of the utility model is to provide an overall automatic lifting formwork construction structure under the conditions of layered and segmented construction of super-high and super-thick concrete walls, which is convenient to construct and has simple measures. The operational difficulty of layered and segmented construction of super-high and super-thick concrete walls can be better controlled, and the construction efficiency is high and the construction cost is greatly reduced.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A structure of an integral lifting formwork for the layered and segmented construction of an ultra-high and ultra-thick concrete wall, wherein the ultra-high and ultra-thick concrete wall to be cast is arranged in a fixed building structure, the top of the fixed building structure is preset with an I-shaped supporting crossbeam, the ultra-high and ultra-thick concrete wall comprises two outer walls cast first and an inner wall in the middle cast later, the outer sides of the two outer walls are provided with integral formworks, a pair of integral formworks which are separated from each other are combined into a pre-assembled formwork by a support member between the two outer walls, and frames are set up on both sides of the outer walls The connecting rod spans the super-high and super-thick concrete wall to be poured and extends to the top of the frames on both sides to connect the tops of the frames; the supporting crossbeam is provided with an electric hoist that can be horizontally moved on the lower horizontal plate; the self-assembled formwork is automatically lifted as a whole by the frame and the electric hoist, and then hoisted between the self-assembled formworks on the two outer sides of the outer wall; the drawing rods are sequentially passed through each of the self-assembled formworks of the outer wall, and the ends of the drawing rods extending outside the self-assembled formworks are fastened by locking parts, thereby forming a structure of an integral lifting formwork.

[0007] Furthermore, the integral formwork includes a formwork made of a wooden mold, a secondary keel made of a wooden square, and a main keel made of an 8# square tube. A plurality of secondary keels are arranged in parallel on the formwork along a horizontal direction and fixedly connected to the formwork by nails. A plurality of main keels are arranged in parallel on the formwork along a vertical direction and fixedly connected to the secondary keels by tying wire. The formwork, secondary keels, and main keels together form an integral formwork.

[0008] Furthermore, each integral formwork's main keel and formwork are provided with a 13mm diameter pulling hole at the same position, the diameter of the pulling rod is not larger than the aperture of the pulling hole, and the pulling rod passes through the pulling hole; on a pair of integral formwork main keels located on the inner side that are deviated from each other, a threaded eye with a diameter of 32mm is reserved every 1 meter, and a threaded sleeve with an inner diameter of 32mm is welded at the threaded eye, and a hook is welded at the upper end of the main keel of the integral formwork that are deviated from each other; the support member includes a lead screw with a diameter of 32mm and a short steel welded in the middle of the lead screw, the two ends of the lead screw of the support member are threadedly connected to the threaded sleeve on the main keel of the integral formwork that are deviated from each other, and rotating the short steel can adjust the distance between a pair of integral formworks that are deviated from each other.

[0009] Furthermore, the outer sleeve of the wire drawing rod is provided with a plastic sleeve, and the locking piece includes a butterfly buckle.

[0010] Furthermore, the frame includes horizontal longitudinal bars, horizontal cross bars and vertical bars that are vertically erected. The frame width is 900 mm, the spacing between adjacent vertical bars is 900 mm, the spacing between the horizontal longitudinal bars and horizontal cross bars in the height direction is 1500 mm, and a horizontal longitudinal bar is added in the middle of the frame along the width direction of the frame. The interconnected horizontal longitudinal bars, horizontal cross bars and vertical bars are connected by connecting parts.

[0011] Furthermore, the top of the frame exceeds the height of one casting section of the existing construction surface, and the horizontal longitudinal rods at the top of the frame are connected to the horizontal plate below the supporting beam through a connecting assembly. The connecting assembly includes an embedded plate, bolts, and nuts. The embedded plate is arranged immediately below the multiple horizontal longitudinal rods at the top of the frame. The bolts penetrate the embedded plate and the horizontal plate below the supporting beam in sequence, and then the embedded plate is fastened by the nuts.

[0012] Furthermore, by adjusting the position of the electric hoist on the supporting beam, the accuracy of adjusting the horizontal position of the self-contained formwork can be controlled.

[0013] The beneficial effects of the utility model are as follows: a structure of an overall lifting formwork for the layered and segmented construction of super-high and super-thick concrete walls with simple measures is proposed, that is, a simplest formwork construction structure for cooperating with the layered and segmented construction of concrete walls is provided. Based on this construction structure, firstly, the operational difficulty of the layered and segmented construction of super-high and super-thick concrete walls can be better controlled; secondly, the influence of the temperature of large-volume concrete on subsequent renovation construction is reduced; thirdly, the structure has high construction efficiency and low construction cost; at the same time, the construction is convenient, the operability is strong, and it has high construction application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the formwork structure in the utility model;

[0015] Figure 2 It is a structural schematic diagram of the frame of the formwork structure in the utility model;

[0016] Figure 3 It is a structural schematic diagram of the integral template in the formwork structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the main keel of the self-contained formwork on the inner side in the utility model;

[0018] Figure 5 It is a schematic structural diagram of the supporting member of the self-contained formwork on the inner side in the utility model;

[0019] Figure 6 Schematic diagram of the connection structure between the supporting beam and the frame of the present invention Figure 1 ;

[0020] Figure 7Schematic diagram of the connection structure between the supporting beam and the frame of the present invention Figure 2 ;

[0021] Among them, 1. Outer wall, 2. Inner wall, 3. Wall connecting rod, 4. Horizontal longitudinal rod, 5. Connectors, 6. Vertical rods, 7. Horizontal crossbar, 8. Hooks, 9. Rebars, 10. Formwork, 11. Secondary keel, 12. Main keel, 13. Butterfly buckle, 14. Support, 15. Pulling holes, 16. Threaded eyes, 17. Plastic sleeve, 18. Pulling rod, 19. Connecting rod, 20. Support beam, 21. Electric hoist, 22. Nuts, 23. Bolts, 24. Embedded plate, 25. Threaded sleeve, 26. Short steel. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] The utility model provides a structure of an integral lifting formwork for layered and segmented construction of ultra-high and ultra-thick concrete walls. Figure 1 As shown, the super-high and super-thick concrete wall includes an inner wall 2 and outer walls 1 on both sides thereof. When constructing in layers, the outer walls 1 on both sides are constructed first. After the outer walls 1 are constructed and reach a certain strength, the inner wall 2 in the middle is constructed.

[0024] like Figure 1 As shown, the integral formwork of the outer wall 1 includes a wooden formwork as a formwork 10, a secondary keel 11 using wooden squares as a formwork support, and a main keel 12 using 8# square tubes. A plurality of secondary keels 11 are arranged in parallel on the formwork 10 in the horizontal direction and fixedly connected to the formwork 10 by nails. A plurality of main keels 12 are arranged in parallel on the formwork 10 in the vertical direction and fixedly connected to the secondary keels 11 by tying wires. The formwork 10, the secondary keels 11, and the main keels 12 together form an integral formwork. Figures 3 to 5As shown, the main keel 12 and the template 10 are provided with a 13mm diameter tie hole 15 at the same position. On the main keel 12 of the integral template located on the inner side, a threaded hole 16 with a diameter of 32mm is reserved every 1.0m, and a threaded sleeve 25 with an inner diameter of 32mm is welded at the threaded hole 16. The upper end of the main keel 12 is welded with a hook 8. A support member 14 is arranged between two adjacent inner integral templates. The support member 14 includes a screw rod with a diameter of 32mm, and a short steel 26 is welded in the middle of the screw rod. The two ends of the screw rod of the support member 14 are threadedly connected with the threaded sleeve 25 of the main keel 12 in a pair of mutually diverging integral templates. By rotating the short steel 26, the depth position of the support member 14 inserted into the threaded sleeve 25 can be adjusted, and the distance between the inner pair of mutually diverging integral templates can be adjusted. When the integral formwork on the outside of the two outer walls 1 is erected and fixed, and the steel bars 9 in the structure of the outer wall 1 are tied, a pair of integral formworks that are away from each other on the inner side of the outer wall 1 can be combined into a self-contained formwork for hoisting through multiple support members 14. After the self-contained formwork is hoisted into the designated position, the tension rods 18 with plastic sleeves 17 on the outside are inserted into the tension holes 15 in the four integral formworks of the two outer walls 1, and the ends of the tension rods 18 are tightened by butterfly buckles 13. After a complete formwork system is formed, the hoisting force is withdrawn.

[0025] like Figure 1 , Figure 2 and Figure 7 , Figure 6 As shown, a frame is erected on both sides of the outer wall 1. The frames on both sides of the outer wall 1 are erected with steel pipes and fasteners. The frame includes horizontal longitudinal bars 4, horizontal cross bars 7 and vertical bars 6 erected perpendicular to each other. The width of the frame is 900mm, and the spacing between adjacent vertical bars 6 is 1200mm. The spacing between the horizontal longitudinal bars 4 and horizontal cross bars 7 in the height direction is 900mm. Along the width direction of the frame, a horizontal longitudinal bar 4 is added in the middle of the frame. The interconnected horizontal longitudinal bars 4, horizontal cross bars 7 and vertical bars 6 are connected by connecting pieces 5. The frames on both sides of the outer wall 1 are integrally connected by connecting rods 19 set on the top. The frame is used as an operating platform for people and a lifting support frame. If the frame is more than 4 meters, a wall connecting piece 3 is added. The wall connecting piece 3 is connected to the reserved steel bar embedded parts in the outer wall 1 by welding. As shown Figure 7 and Figure 6 As shown, the top of the frame is higher than the height of one pouring section of the existing construction surface. The horizontal longitudinal rod 4 at the top of the frame is connected to the supporting crossbeam 20. The supporting crossbeam 20 is an I-beam steel beam that has been fixed on the top of the building. The multiple horizontal longitudinal rods 4 at the top of the frame are fixed to the horizontal plate below the supporting crossbeam 20 through the embedded plate 24, bolts 23, and nuts 22. The embedded plate 24 is set immediately below the multiple horizontal longitudinal rods 4. The bolts 23 penetrate the embedded plate 24 and the horizontal plate below the supporting crossbeam 20 and are tightened by nuts 22. Figure 1 As shown, an electric hoist 21 is hung on the supporting beam 20 .

[0026] Preferably, when the lower end integral formwork is hoisted to the position of the connecting rod 19, the connecting rod 19 on the upper part of the frame is immediately added with the wall connecting rod 3 between the structures, and then the upper connecting rod 19 can be removed.

[0027] Preferably, the self-assembled formwork can be automatically lifted and hoisted as a whole through the frame and the electric hoist 21, and the horizontal position accuracy can be adjusted by moving the electric hoist 21.

[0028] An installation process of an integral lifting formwork structure based on the above-mentioned layered and segmented construction of super-high and super-thick concrete walls comprises the following steps:

[0029] (1) Assemble the integral formwork, connect the formwork 10 and the secondary keel 11 by nails, and fix the secondary keel 11 and the main keel 12 by tying wires, so that the formwork 10, the secondary keel 11, and the main keel 12 together form an integral formwork.

[0030] (2) Use steel pipes and fasteners to build a frame operating platform; connect the frames on both sides of the outer wall 1 as a whole through the connecting rod 19 set on the top, connect the horizontal longitudinal rod 4 on the top of the frame to the supporting beam 20, and set an electric hoist 21 on the supporting beam 20.

[0031] (3) Build a complete formwork system: fix the integral formwork on the outside of the two outer walls 1, complete the binding of the steel bars 9 in the outer wall structure, and hoist the self-contained formwork on the inside of the outer wall 1 by the electric hoist 22. After the self-contained formwork is hoisted into the designated position, pass the tie rods 18 with plastic sleeves 17 on the outside through the tie holes 15 in the four integral formworks of the two layers of the outer walls 1 in turn, fasten the ends of the tie rods 18 by butterfly buckles 13, and accurately adjust the spacing of the self-contained formwork on the inside by the support members 14. After the complete formwork system is formed, remove the hoisting force.

[0032] (4) Construct the outer wall first, then the inner wall: Cast the outer walls 1 on both sides. After the outer wall 1 reaches a certain strength, remove the tie rods, use a lifting machine to lift the integral formwork on the inner side, and tie the structural steel bars of the inner wall 2. After the tying is completed, construct the inner wall 2 in the middle.

[0033] (5) After the concrete pouring is completed, the outer integral formwork of the outer wall is removed, and the subsequent formwork is installed by hoisting and lifting. The above hoisting and pouring process is repeated until the construction is completed.

[0034] The purpose of the present invention is to provide a structure of an integral lifting formwork based on the layered and segmented construction of ultra-high and ultra-thick concrete walls, and a construction method based on the structure, which can better control the operational difficulty of the layered and segmented construction of ultra-high and ultra-thick concrete walls, and has high construction efficiency and low construction cost.

[0035] The above-described structure of an integral lifting formwork based on the layered and segmented construction of super-high and super-thick concrete walls does not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A structure of an integral lifting formwork for layered and segmented construction of super-high and super-thick concrete walls, wherein the super-high and super-thick concrete walls to be cast are arranged in a fixed building structure, and an I-shaped support beam (20) is preset on the top of the fixed building structure, characterized in that: The super-high and super-thick concrete wall comprises two outer walls (1) cast first and an inner wall (2) cast later in the middle, the outer sides of the two outer walls (1) are provided with integral formworks, a pair of integral formworks which are separated from each other are combined into a self-contained formwork by a support (14) between the two outer walls (1), frames are erected on both sides of the outer walls (1), and connecting rods (19) span the super-high and super-thick concrete wall to be cast and extend to the tops of the frames on both sides to connect the tops of the frames; The supporting crossbeam (20) is provided with an electric hoist (21) capable of horizontally moving position on the lower horizontal plate. The self-contained formwork is automatically lifted as a whole by the frame and the electric hoist (21), and then hoisted between the self-contained formworks on the two outer sides of the outer wall (1); the drawing rod (18) is sequentially passed through each of the self-contained formworks of the outer wall (1), and the end of the drawing rod (18) extending outside the self-contained formwork is fastened by a locking member, thereby forming a structure of a self-contained lifting formwork.

2. The structure of the integral lifting formwork according to claim 1 is characterized in that: The integral formwork comprises a formwork (10) made of a wooden formwork, a secondary keel (11) made of a wooden square, and a main keel (12) made of an 8# square tube, wherein a plurality of secondary keels (11) are arranged in parallel on the formwork (10) in a horizontal direction and are fixedly connected to the formwork (10) by nails, and a plurality of main keels (12) are arranged in parallel on the formwork (10) in a vertical direction and are fixedly tied to the secondary keels (11) by wire tying, and the formwork (10), the secondary keels (11), and the main keels (12) together form an integral formwork.

3. The structure of the integral lifting formwork according to claim 2 is characterized in that: Each of the main keels (12) of the integral formwork and the formwork (10) is provided with a 13 mm diameter tie hole (15) at the same position, the diameter of the tie rod (18) is not greater than the hole diameter of the tie hole (15), and the tie rod (18) runs through the tie hole (15); on a pair of main keels (12) of the integral formwork located on the inner side and facing away from each other, a threaded eye (16) with a diameter of 32 mm is reserved every 1 meter, and a threaded eye (16) is welded A hook (8) is welded to the upper end of the main keel (12) of the integral template which is separated from each other and is connected with a threaded sleeve (25) with an inner diameter of 32 mm; the support member (14) includes a lead screw with a diameter of 32 mm and a short steel welded in the middle of the lead screw; the two ends of the lead screw of the support member (14) are threadedly connected to the threaded sleeve (25) on the main keel (12) of the integral template which is separated from each other, and the distance between a pair of integral templates which are separated from each other can be adjusted by rotating the short steel (26).

4. The structure of the integral lifting formwork according to claim 1 is characterized in that: The outside of the drawing rod (18) is sleeved with a plastic sleeve (17), and the locking piece includes a butterfly buckle (13).

5. The structure of the integral lifting formwork according to claim 1 is characterized in that: The frame comprises horizontal longitudinal bars (4), horizontal cross bars (7) and vertical bars (6) which are vertically erected. The width of the frame is 900 mm. The spacing between adjacent vertical bars (6) is 1200 mm. The spacing between the horizontal longitudinal bars (4) and the horizontal cross bars (7) in the height direction is 900 mm. An additional horizontal longitudinal bar (4) is provided in the middle of the frame in the width direction of the frame. The horizontal longitudinal bars (4), the horizontal cross bars (7) and the vertical bars (6) which are connected to each other are connected via a connecting piece (5).

6. The structure of the integral lifting formwork according to claim 5 is characterized in that: The top of the frame body exceeds the height of one pouring section of the existing construction surface. The horizontal longitudinal rod (4) at the top of the frame body is connected to the horizontal plate below the supporting beam (20) through a connecting assembly. The connecting assembly includes an embedded plate (24), bolts (23), and nuts (22). The embedded plate (24) is arranged immediately below the multiple horizontal longitudinal rods (4) at the top of the frame body. The bolts (23) penetrate the embedded plate (24) and the horizontal plate below the supporting beam (20) in sequence and are then fastened by nuts (22).

7. The structure of the integral lifting formwork according to claim 1 is characterized in that: By adjusting the position of the electric hoist (21) on the supporting crossbeam (20), the accuracy of adjusting the horizontal position of the self-contained template can be controlled.

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