Vertical shaft concrete construction formwork system

Abstract

A vertical shaft concrete construction formwork system comprises a support framework, a peripheral formwork, a telescopic supporting device and a limiting device, the longitudinal side face of the support framework is provided with the peripheral formwork through the telescopic supporting device, the peripheral formwork encircles the support framework, and the peripheral formwork is composed of a plurality of formwork units; the multiple formwork units are movably connected with the support framework in a telescopic mode through the multiple telescopic supporting devices, and the multiple limiting devices are installed at the bottom of the support framework. The peripheral formwork is composed of the multiple formwork units, the multiple formwork units are movably connected with the support framework in a telescopic mode through the multiple independent telescopic supporting devices respectively, and therefore the multiple formwork units can avoid the interference problem during supporting and contracting, and the overall structure is simpler. And during use, the well wall which is poured and cured is supported through the limiting device, so that the well wall of the vertical well can be poured gradually from bottom to top.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft concrete construction, in particular to a shaft concrete construction formwork system. Background Technique

[0002] The bottom excavation elevation of an irrigation well in a certain water diversion project is 21.8 m, and the elevation of the wellhead ring beam is 74 m. The irrigation shaft structure is cast with C25 reinforced concrete. After the shaft body is formed, the net space is a semi-circular shape with a diameter of 8 m and a height of 5.2 m. In order to facilitate the casting construction of the irrigation shaft, a shaft concrete construction formwork system is designed.

[0003] After retrieval, the Chinese patent document CN201202122Y discloses an automatically opening, closing, retracting and extending caisson or deep well steel formwork, which is a square tube structure composed of an inner formwork one, an inner formwork two, corner formworks and a formwork support structure. Two sets of connecting rod retracting and extending mechanisms composed of a movable frame and a fixed frame are installed on the central sleeve frame. The upper and lower movable frames are driven by hydraulic cylinders to slide on the central sleeve frame, driving the two sets of connecting rod retracting and extending mechanisms to simultaneously expand and contract, so as to quickly support the formwork and contract for demoulding. Its disadvantages are as follows: First, the structure in this document is applicable to the scenario where the shaft structure is relatively square. For special-shaped shaft structures, there may be interference in the simultaneous support and contraction of the inner formwork one and the inner formwork two; Second, the structure is relatively complex. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shaft concrete construction formwork system. The peripheral formwork is composed of multiple formwork units, and the multiple formwork units are respectively telescopically and movably connected to the support framework through multiple independent telescopic support devices, so that interference problems can be avoided when the multiple formwork units are supported and contracted, and the overall structure is simpler.

[0005] To achieve the above purpose, the utility model provides a shaft concrete construction formwork system, including a support framework, a peripheral formwork, telescopic support devices and a limiting device. The peripheral formwork is installed on the longitudinal side surface of the support framework through the telescopic support devices, and the peripheral formwork surrounds the support framework. The peripheral formwork is composed of multiple formwork units, and the multiple formwork units are respectively telescopically and movably connected to the support framework through multiple telescopic support devices. The multiple limiting devices are installed at the bottom of the support framework; in the use state, the multiple limiting devices support against the shaft wall of the shaft to limit the support framework in the shaft.

[0006] The multiple template units forming the peripheral template include a first side template, a second side template, a third side template, and a fourth side template. The first side template and the fourth side template are arranged opposite to each other. The two second side templates are respectively located on both sides of the first side template, and the two third side templates are respectively located on both sides of the fourth side template. The second side template and the third side template are adjacent to each other.

[0007] At the longitudinal two ends of the first side template and the third side template, first inclined surfaces are respectively arranged. At the longitudinal two ends of the second side template and the fourth side template, second inclined surfaces are respectively arranged. Among them, the first inclined surface is inclined inward, and the second inclined surface is inclined outward.

[0008] The support framework includes an upper framework, a lower framework, and support skeletons. Multiple support skeletons are fixedly connected between the upper framework and the lower framework. The limiting device is installed on the lower side of the lower framework.

[0009] The limiting device includes a sleeve and a bolt. The bolt is movably inserted into the sleeve.

[0010] The telescopic support device is a hydraulic cylinder or an electric cylinder.

[0011] The template unit includes a side plate and a rib plate fixedly connected to the edge of the side plate. Among them, the rib plate is located on one side of the support framework.

[0012] The template unit is further provided with ribbed plates, and the ribbed plates are fixedly connected to the side plate and the rib plate.

[0013] The utility model has the following technical effects compared with the prior art:

[0014] 1. The peripheral template of the utility model is composed of multiple template units. The multiple template units are respectively telescopically and movably connected to the support framework through multiple independent telescopic support devices, so that the problem of interference can be avoided when the multiple template units are supported and retracted, and the overall structure is simpler. And during use, it is supported by the limiting device and the well wall that has been poured and solidified, so that the well wall of the vertical shaft can be gradually poured from bottom to top.

[0015] 2. When the multiple template units are retracted, first, the telescopic support devices on the first side template and the two third side templates retract first, and then the telescopic support devices on the two second side templates and the fourth side template retract, so as to retract the peripheral template, which is convenient for lifting a certain distance after a section of the template system has been poured.

[0016] 3. By arranging the first inclined surface and the second inclined surface, and the slopes of the first inclined surface and the second inclined surface are the same, when the multiple template units are extended, the gaps between adjacent template units are eliminated. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0018] Figure 1 It is a top view structural schematic diagram of the present utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the present utility model;

[0020] Figure 3 It is a top view structural schematic diagram of the present utility model in the use state;

[0021] Figure 4 It is Figure 3 the sectional view of A-A in

[0022] Reference numerals:

[0023] Vertical shaft 1, shaft wall 2, reserved hole 3, area to be poured 4;

[0024] Support frame skeleton 10, upper layer skeleton 11, lower layer skeleton 12, support frame skeleton 13;

[0025] Peripheral formwork 20, first side formwork 21, second side formwork 22, third side formwork 23, fourth side formwork 24, first inclined surface 25, second inclined surface 26, side plate 201, rib plate 202, ribbed plate 203,

[0026] Expansion support device 30,

[0027] Limit device 40, sleeve 41, pin 42. Detailed implementation manners

[0028] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0029] Please refer to Figure 1-2, A shaft concrete construction formwork system, comprising a support framework 10, an outer formwork 20, a telescopic support device 30 and a limiting device 40. The longitudinal side of the support framework 10 is installed with the outer formwork 20 through the telescopic support device 30, and the outer formwork 20 surrounds the support framework 10. The outer formwork 20 is composed of multiple formwork units, and the multiple formwork units are respectively telescopically and movably connected to the support framework 10 through multiple telescopic support devices 30. The multiple limiting devices 40 are installed at the bottom of the support framework 10. In the use state, the multiple limiting devices 40 are supported by the well wall 2 of the shaft 1 to limit the support framework 10 within the shaft 1. The outer formwork 20 of the present utility model is composed of multiple formwork units, and the multiple formwork units are respectively telescopically and movably connected to the support framework 10 through multiple independent telescopic support devices 30, so that the multiple formwork units can avoid interference problems during support and contraction, and the overall structure is simpler. And during use, through the support of the limiting device 40 and the well wall 2 that has been poured and solidified, the well wall 2 of the shaft 1 can be gradually poured from bottom to top.

[0030] In this embodiment, refer to Figure 1 , since the cross-section of the shaft 1 is a semi-circle, the multiple formwork units forming the outer formwork 20 include a first side formwork 21, a second side formwork 22, a third side formwork 23 and a fourth side formwork 24. The first side formwork 21 and the fourth side formwork 24 are arranged opposite to each other. The two second side formworks 22 are respectively located on both sides of the first side formwork 21, and the two third side formworks 23 are respectively located on both sides of the fourth side formwork 24. The second side formwork 22 and the third side formwork 23 are adjacent. When the multiple formwork units are retracted, first, the telescopic support devices 30 on the first side formwork 21 and the two third side formworks 23 retract first, and then the telescopic support devices 30 on the two second side formworks 22 and the fourth side formwork 24 retract, so as to retract the outer formwork 20, facilitating lifting a certain distance after a section of the formwork system is poured.

[0031] Further, refer to Figure 1 , first inclined surfaces 25 are respectively arranged at the longitudinal two ends of the first side formwork 21 and the third side formwork 23, and second inclined surfaces 26 are respectively arranged at the longitudinal two ends of the second side formwork 22 and the fourth side formwork 24. Among them, the first inclined surface 25 is inclined inward, and the second inclined surface 26 is inclined outward. By arranging the first inclined surface 25 and the second inclined surface 26, the slopes of the first inclined surface 25 and the second inclined surface 26 are the same, so that when the multiple formwork units are extended, the gaps between adjacent formwork units are eliminated.

[0032] In this embodiment, refer to Figure 1 , 2, the support framework 10 includes an upper framework 11, a lower framework 12 and a support framework 13. Multiple support frameworks 13 are fixedly connected between the upper framework 11 and the lower framework 12. The limiting device 40 is installed on the lower side of the lower framework 12, and the structure is simple. Specifically, the support framework 10 is welded by I-beams.

[0033] In this embodiment, refer to Figure 2 , the limiting device 40 includes a sleeve 41 and a bolt 42. The bolt 42 is movably inserted into the sleeve 41. When adopting this embodiment, refer to Figure 4 , a plurality of reserved holes 3 are provided at the upper end of the already cast well wall 2. In this way, by inserting the bolt 42 into the reserved hole 3, the entire formwork system can be supported. Refer to Figure 3 , there are 8 limiting devices 40 in this embodiment.

[0034] Of course, in addition to adopting the above structure, the limiting device 40 can also adopt installing a hydraulic cylinder at the bottom of the support framework 10 and installing a support plate at the end of the piston rod of the hydraulic cylinder. When the piston rod of the hydraulic cylinder extends, the support plate abuts against the well wall 2, thereby supporting the entire formwork system.

[0035] In this embodiment, the telescopic support device 30 is a hydraulic cylinder or an electric cylinder. Refer to Figure 2 , the cylinder end is fixedly connected to the support framework 10, and the telescopic end is connected to the formwork unit through an ear seat.

[0036] In this embodiment, refer to Figure 2 , the formwork unit includes a side plate 201 and a rib plate 202 fixedly connected to the edge of the side plate 201, and the rib plate 202 is located on one side of the support framework 10. The rib plate 202 is welded to the four peripheral edges of the side plate 201 to improve the structural strength of the formwork unit and facilitate the connection of the telescopic support device 30 of the formwork unit. In Figure 2 , the telescopic support device 30 is connected to the rib plate 202.

[0037] Furthermore, a rib 203 is also provided on the formwork unit. The rib 203 is fixedly connected to the side plate 201 and the rib plate 202, further improving the structural strength of the formwork unit.

[0038] The working principle or operation process of the present utility model is as follows:

[0039] Refer to Figure 3 , when pouring the shaft 1, first assemble the formwork system and place it at the bottom. When pouring the shaft 1 by cooperating with the annular formwork on the outer wall, during pouring, a section of PVC pipe is placed in the well wall 2, and a reserved hole 3 is formed inside the PVC pipe.

[0040] Refer to Figure 4, after the shaft wall 2 in the following section is poured and solidified, first, the telescopic support devices 30 on the first side formwork 21 and the two third side formworks 23 contract. Then, the telescopic support devices 30 on the two second side formworks 22 and the fourth side formwork 24 contract, causing the peripheral formwork 20 to contract. After that, the formwork system is lifted a certain distance by the hoisting equipment at the top. When the bolt 42 corresponds to the reserved hole 3, the bolt 42 is inserted into the reserved hole 3, and the entire formwork system is supported above the already poured shaft wall 2.

[0041] After that, the telescopic support devices 30 on the two second side formworks 22 and the fourth side formwork 24 extend, and then the telescopic support devices 30 on the first side formwork 21 and the two third side formworks 23 extend, forming Figure 3 the structure shown, so as to pour the area 4 to be poured above.

Claims

1. A shaft concrete construction formwork system, characterized in that: It includes a support framework (10), a peripheral formwork (20), a telescopic support device (30) and a limit device (40). The longitudinal side of the support framework (10) is installed with the peripheral formwork (20) through the telescopic support device (30), and the peripheral formwork (20) surrounds the support framework (10). The peripheral formwork (20) is composed of multiple formwork units, and the multiple formwork units are respectively telescopically and movably connected to the support framework (10) through multiple telescopic support devices (30). The multiple limit devices (40) are installed at the bottom of the support framework (10). In the use state, the multiple limit devices (40) are supported by the shaft wall (2) of the shaft (1) to limit the support framework (10) in the shaft (1).

2. The shaft concrete construction formwork system according to claim 1, wherein: The multiple formwork units constituting the peripheral formwork (20) include a first side formwork (21), a second side formwork (22), a third side formwork (23) and a fourth side formwork (24). The first side formwork (21) and the fourth side formwork (24) are arranged oppositely. The two second side formworks (22) are respectively located on both sides of the first side formwork (21), and the two third side formworks (23) are respectively located on both sides of the fourth side formwork (24). The second side formwork (22) and the third side formwork (23) are adjacent to each other.

3. The shaft concrete construction formwork system according to claim 2, characterized in that: Both longitudinal ends of the first side formwork (21) and the third side formwork (23) are respectively provided with a first inclined surface (25), and both longitudinal ends of the second side formwork (22) and the fourth side formwork (24) are respectively provided with a second inclined surface (26), wherein the first inclined surface (25) is inclined inward, and the second inclined surface (26) is inclined outward.

4. The shaft concrete construction formwork system according to claim 1, characterized in that: The support framework (10) includes an upper-layer framework (11), a lower-layer framework (12) and a support framework (13). Multiple support frameworks (13) are fixedly connected between the upper-layer framework (11) and the lower-layer framework (12), and the limit device (40) is installed on the lower side of the lower-layer framework (12).

5. The shaft concrete construction formwork system according to claim 1 or 4, characterized in that: The limit device (40) includes a sleeve (41) and a bolt (42), and the bolt (42) is movably inserted into the sleeve (41).

6. The shaft concrete construction formwork system according to claim 1, characterized in that: The telescopic support device (30) is a hydraulic cylinder or an electric cylinder.

7. The shaft concrete construction formwork system according to claim 1 or 2, characterized in that: The formwork unit includes a side plate (201) and a rib plate (202) fixedly connected to the edge of the side plate (201), and the rib plate (202) is located on one side of the support framework (10).

8. The shaft concrete construction formwork system according to claim 7, characterized in that: The formwork unit is further provided with a gusset plate (203), and the gusset plate (203) is fixedly connected to the side plate (201) and the rib plate (202).

Images