Anti-seepage steel formwork device of cast-in-place concrete structure

Abstract

The utility model relates to an anti-seepage steel formwork device of a cast-in-place concrete structure, which comprises a plurality of steel formwork side formworks, the steel formwork side formworks are sequentially arranged and connected along the length direction of the cast-in-place concrete structure, and the adjacent steel formwork side formworks are fixedly connected through connecting units. The front face of the steel formwork side formwork faces the cast-in-place concrete structure side, a plurality of horizontal back ridges are fixed to the back face of the steel formwork side formwork, the horizontal back ridges are sequentially arranged in the height direction of the steel formwork side formwork and distributed at equal intervals in the vertical direction, and vertical back ridges are fixed to the horizontal back ridges. The vertical back ridges are sequentially arranged in the length direction of the steel formwork side formworks and distributed left and right at equal intervals, and lifting frames used for lifting the seepage-proofing steel formwork device are fixed to the vertical back ridges. In the using process, the risk of concrete surface leakage can be avoided, so that the anti-seepage problem of underground cast-in-place concrete structures such as pipe galleries is solved, and the stability problem of a conventional steel formwork in the lifting process is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction of underground spaces such as pipe galleries, and particularly relates to a waterproof steel formwork device for cast-in-place concrete structures. Background Art

[0002] The waterproof project is a lifeline for the construction of underground spaces such as pipe galleries. In principle, the waterproof project is based on the self-waterproofing of the structure, supplemented by waterproof measures to form a waterproof system, and the waterproofing of detailed structures such as construction joints and deformation joints is the control key point. At present, most of the underground space structures such as pipe galleries adopt cast-in-place concrete construction. During the construction of the cast-in-place concrete side wall structure, tie bolts are generally used to fix the formwork. Although the tie bolts are provided with water stop pieces to block the water flow path, considering the objective factors of the long construction pipeline of the pipe gallery and the large number of formwork overturning times, the tie bolts will be damaged, and the setting of the tie bolts will cause holes on the concrete surface. If not properly treated, corrosion and leakage will occur, affecting the surface quality of fair-faced concrete and the structural service performance.

[0003] During the use of traditional steel formwork in the foundation pit, a hoisting machine (truck crane) is mostly used for cooperative installation. There are no fixed hoisting holes, and the stability of the formwork during hoisting is poor. (During the installation of traditional steel formwork, hoisting is mostly carried out at the part of the hoisting main rib steel), and the positioning time of the steel formwork during installation is long, and the formwork is prone to tipping during hoisting. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and provide a waterproof steel formwork device for cast-in-place concrete structures, which can avoid the risk of concrete surface leakage during use, thereby improving the treatment of the waterproof problem of underground cast-in-place concrete structures such as pipe galleries, and solving the stability problem of conventional steel formwork during hoisting.

[0005] The purpose of the utility model is completed by the following technical solutions. This waterproof steel formwork device for cast-in-place concrete structures includes steel formwork side templates. There are several steel formwork side templates, which are arranged and connected in sequence along the length direction of the cast-in-place concrete structure, and adjacent steel formwork side templates are connected and fixed through a connection unit; the front surface of the steel formwork side template faces the side of the cast-in-place concrete structure, and several horizontal back ribs are fixed on the back surface of the steel formwork side template. The several horizontal back ribs are arranged in sequence along the height direction of the steel formwork side template and are equally spaced up and down. Vertical back ribs are fixed on the several horizontal back ribs. The vertical back ribs are arranged in sequence along the length direction of the steel formwork side template and are equally spaced left and right, and a hoisting frame for hoisting the waterproof steel formwork device is fixed on the vertical back ribs.

[0006] The beneficial effects of the present utility model are as follows: Compared with the prior art, the steel formwork side formwork and the adjacent steel formwork side formwork are connected and fixed through a connecting unit, which can avoid the risk of concrete surface leakage during use, thereby improving the treatment of the anti-seepage problem of underground cast-in-place concrete structures such as pipe galleries. After pouring, the fair-faced concrete surface is exposed (without decoration), and the surface appearance quality can reach the qualified standard at one time. Through the anti-seepage steel formwork device of this design, in the project with a large amount of sectional flow operation and a large number of formwork transfer and turnover times, it can save costs, implement green construction, and improve construction efficiency; at the same time, by setting a lifting frame on the vertical back rib, it is convenient to lift the formwork during use and can ensure the stability during the lifting process.

[0007] Preferably, horizontal support plates are provided at both the upper and lower ends of the steel formwork side formwork. The horizontal support plates are perpendicularly distributed with respect to the steel formwork side formwork, and the width of the horizontal support plates is equal to the width of the horizontal back rib. Both ends of the vertical back rib extend beyond the upper and lower ends of the steel formwork side formwork, and the vertical back rib is fixed to the horizontal support plate and the horizontal back rib by welding; by setting the horizontal support plates, the fixation between the steel formwork side formwork and the vertical back rib is more stable, and thus the stability of the steel formwork side formwork during use is better.

[0008] Preferably, stiffening plates are fixed between the horizontal support plates and the horizontal back rib by welding. The stiffening plates are arranged in sequence along the length direction of the steel formwork side formwork and are equally spaced left and right; since the stress at both the upper and lower ends of the steel formwork side formwork is relatively weak, and in actual applications, the strength requirements for both the upper and lower ends of the steel formwork side formwork are relatively high, and in addition, the horizontal support plates and the steel formwork side formwork are fixed and formed by welding. Therefore, by setting the stiffening plates, the strength is greatly improved to increase the overall stability between the formworks.

[0009] Preferably, the vertical back rib is composed of two symmetrically distributed channel steels. A gap space for the penetration of the tie rod is left between the two channel steels. One side of the end of the vertical back rib extending beyond the upper and lower ends of the steel formwork side formwork is fixed with a steel plate, and the steel plate is provided with a penetration hole for the penetration of the tie rod, and the center of the penetration hole is aligned with the center of the gap space; through the setting of the above structure, by setting the tie rod in the steel formwork side formwork, the construction quality of the concrete surface can be well guaranteed, preventing the leakage of the tie rod in the traditional process. Compared with the formwork with a strand rod, it is more convenient during the installation and removal process.

[0010] Preferably, the connecting unit is arranged at the left and right ends of the steel formwork side formwork. The connecting unit includes a connecting plate and bolts. The connecting plate is fixed at the left and right ends of the steel formwork side formwork. Bolt holes are provided on the connecting plate. Adjacent steel formwork side formworks are connected and fixed through the bolt holes on the connecting plate and the bolts. With the above structure, the connection between adjacent steel formwork side formworks is more convenient, the structural stability after installation is better, and the disassembly and assembly are more convenient.

[0011] Preferably, the lifting frame is a support frame with an isosceles triangle cross-section. The bottom of the lifting frame is fixed on the vertical back rib by welding. Hoisting holes are provided on both main bodies of the lifting frame. With the lifting frame of the above structure, the structure during hoisting is more stable, and the stability during hoisting can be ensured. Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the anti-seepage steel formwork device for the cast-in-place concrete structure of the present invention.

[0013] Figure 2 is the side view structural schematic diagram of the anti-seepage steel formwork device for the cast-in-place concrete structure of the present invention.

[0014] Figure 3 is the structural schematic diagram of the splicing of the steel formwork side formwork of the present invention.

[0015] The reference numerals in the drawings are respectively: 100, steel formwork side formwork; 101, connecting unit; 102, horizontal back rib; 103, vertical back rib; 104, lifting frame; 105, transverse support plate; 106, stiffening plate; 107, channel steel; 108, steel plate; 109, insertion hole; 110, connecting plate; 111, bolt hole; 112, bolt; 113, hoisting hole. Detailed Embodiment

[0016] The following will introduce the present invention in detail with reference to the drawings: As shown in the Figures 1 to 3 drawing, the present invention includes steel formwork side formworks 100. A plurality of steel formwork side formworks 100 are arranged in sequence along the length direction of the cast-in-place concrete structure and are connected and fixed. Adjacent steel formwork side formworks 100 are connected and fixed through a connecting unit 101. The front of the steel formwork side formwork 100 faces the side of the cast-in-place concrete structure. A plurality of horizontal back ribs 102 are fixed on the back of the steel formwork side formwork 100. The plurality of horizontal back ribs 102 are arranged in sequence along the height direction of the steel formwork side formwork 100 and are equally spaced up and down. A vertical back rib 103 is fixed on each of the plurality of horizontal back ribs 102. The vertical back ribs 103 are arranged in sequence along the length direction of the steel formwork side formwork 100 and are equally spaced left and right. A lifting frame 104 for hoisting the anti-seepage steel formwork device is fixed on the vertical back rib 103.

[0017] The side formwork 100 of the steel form uses a standardized steel side wall formwork of 2400×1200mm (which can be processed according to construction needs). Both the horizontal back ribs 102 and the vertical back ribs 103 use channel steels, which not only have high strength but also greatly reduce costs.

[0018] Both the upper and lower ends of the side formwork 100 of the steel form are provided with transverse support plates 105. The transverse support plates 105 are vertically distributed with respect to the side formwork 100 of the steel form, and the width of the transverse support plates 105 is equal to the width of the horizontal back ribs 102. Both ends of the vertical back ribs 103 extend beyond the upper and lower ends of the side formwork 100 of the steel form, and the vertical back ribs 103 are fixed to the transverse support plates 105 and the horizontal back ribs 102 by welding.

[0019] Stiffening plates 106 are fixed between the transverse support plates 105 and the horizontal back ribs 102 by welding. The stiffening plates 106 are arranged in sequence along the length direction of the side formwork 100 of the steel form and are equally spaced left and right.

[0020] The vertical back ribs 103 are composed of two symmetrically distributed channel steels 107. A gap space for the through - pulling of the tie rods is left between the two channel steels 107. One side of the end of the vertical back ribs 103 extending beyond the upper and lower ends of the side formwork 100 of the steel form is fixed with a steel plate 108. The steel plate 108 is provided with a through - hole 109 for the through - pulling of the tie rods, and the hole core of the through - hole 109 is aligned with the center of the gap space.

[0021] The connecting unit 101 is arranged at the left and right ends of the side formwork 100 of the steel form. The connecting unit 101 includes a connecting plate 110 and bolts 112. The connecting plate 110 is fixed at the left and right ends of the side formwork 100 of the steel form. The connecting plate 110 is provided with bolt holes 111. Adjacent side formworks 100 of the steel form are connected and fixed through the bolt holes 111 on the connecting plate 110 and the bolts 112.

[0022] The lifting frame 104 is a support frame with an isosceles triangle cross - section. The bottom of the lifting frame 104 is fixed to the vertical back ribs 103 by welding. Lifting holes 113 are provided on both main bodies of the two sides of the lifting frame 104.

[0023] The manufacturing and installation process of the present utility model is as follows: First, the horizontal back ribs 102 are fixed to the back of the side formwork 100 of the steel form by welding, and the vertical back ribs 103 are fixed to the horizontal back ribs 102 and the transverse support plates 105 by welding. The stiffening plates 106 are welded and fixed between the horizontal back ribs 102 and the transverse support plates 105. Then, the lifting frame 104 and the square - shaped steel plate 108 are fixed to the vertical back ribs 103 by welding. Finally, according to the actual length of the cast - in - place concrete structure, adjacent side formworks 100 of the steel form are spliced in sequence through the connecting unit 101.

[0024] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An anti-seepage steel formwork device for cast-in-place concrete structures, comprising a steel formwork side form (100), characterized in that: A plurality of the steel formwork side formboards (100) are provided and arranged and connected in sequence along the length direction of the cast-in-place concrete structure, and adjacent steel formwork side formboards (100) are connected and fixed through a connecting unit (101); the front surface of the steel formwork side formboard (100) faces the side of the cast-in-place concrete structure, and a plurality of horizontal back ribs (102) are fixed on the back surface of the steel formwork side formboard (100). The plurality of horizontal back ribs (102) are arranged in sequence along the height direction of the steel formwork side formboard (100) and are equally spaced up and down. Vertical back ribs (103) are fixed on the plurality of horizontal back ribs (102). The vertical back ribs (103) are arranged in sequence along the length direction of the steel formwork side formboard (100) and are equally spaced left and right, and a lifting frame (104) for lifting the anti-seepage steel formwork device is fixed on the vertical back ribs (103).

2. The anti-seepage steel formwork device for cast-in-place concrete structure according to claim 1, characterized in that: Horizontal support plates (105) are provided at both the upper and lower ends of the steel formwork side formboard (100). The horizontal support plates (105) are perpendicularly distributed with respect to the steel formwork side formboard (100), and the width of the horizontal support plates (105) is equal to the width of the horizontal back ribs (102). Both ends of the vertical back ribs (103) extend beyond the upper and lower ends of the steel formwork side formboard (100), and the vertical back ribs (103) are fixed to the horizontal support plates (105) and the horizontal back ribs (102) by welding.

3. The anti-seepage steel formwork device for the cast-in-place concrete structure according to claim 2, characterized in that: Stiffening plates (106) are fixed between the horizontal support plates (105) and the horizontal back ribs (102) by welding. The stiffening plates (106) are arranged in sequence along the length direction of the steel formwork side formboard (100) and are equally spaced left and right.

4. The anti-seepage steel formwork device for cast-in-situ concrete structures according to claim 2, characterized in that: The vertical back ribs (103) are composed of two symmetrically distributed channel steels (107). A gap space for the penetration of the tie bolts is left between the two channel steels (107). One side of the end of the vertical back ribs (103) extending beyond the upper and lower ends of the steel formwork side formboard (100) is fixed with a steel plate (108). The steel plate (108) is provided with a penetration hole (109) for the penetration of the tie bolts, and the center of the hole core of the penetration hole (109) is aligned with the center of the gap space.

5. The anti-seepage steel formwork device for cast-in-place concrete structure according to claim 1, characterized in that: The connecting unit (101) is arranged at the left and right ends of the steel formwork side formboard (100). The connecting unit (101) includes a connecting plate (110) and bolts (112). The connecting plate (110) is fixed at the left and right ends of the steel formwork side formboard (100). The connecting plate (110) is provided with bolt holes (111). Adjacent steel formwork side formboards (100) are connected and fixed through the bolt holes (111) on the connecting plate (110) and the bolts (112).

6. The anti-seepage steel formwork device for cast-in-place concrete structures according to claim 1, wherein: The lifting frame (104) is a support frame with an isosceles triangle cross-section. The bottom of the lifting frame (104) is fixed to the vertical back ribs (103) by welding. Lifting holes (113) are provided on both main bodies of the two sides of the lifting frame (104).

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