Prefabricated bearing platform out-of-mold supporting system

Abstract

The utility model discloses an external supporting system of a prefabricated bearing platform mould. The external supporting system comprises a prefabricated brick moulding bed, a supporting system and a fixing system, the fixing system is arranged on the periphery of the prefabricated brick moulding bed in a surrounding mode, the supporting system is arranged on the periphery of the fixing system in a surrounding mode, and the fixing system is supported through the supporting system and fixes the periphery of the prefabricated brick moulding bed. The prefabricated brick moulding bed is carried out based on new construction procedures, working faces of the bearing platform and the ground beam are reserved when earth excavation is carried out, the prefabricated brick moulding bed is reinforced and supported through the outer supporting system, and the earth backfilling procedure is carried out after pouring of the bearing platform and the ground beam is completed. After mechanical excavation, construction can be conducted immediately, the assembly time is short, bearing platform pouring can be conducted in a short time, a machine does not need to enter a completed area repeatedly, and secondary damage is avoided; the efficiency of bearing platform formwork erecting is improved, labor for building and pouring a cushion layer is greatly saved, the construction period is greatly shortened, and the construction period is integrally saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering construction, and in particular provides a prefabricated cap formwork external support system. Background Art

[0002] With the development of urban construction and industry, the construction of super-high-rise, large-span, and large-space factories is becoming more and more common. In the construction process of these building projects, in order to increase the bearing capacity, some pedestal foundations are often designed. The pedestal foundation is often a convex structure, small at the top and large at the bottom. The pedestal has a cube structure, a rectangular structure, an eight-shaped slope structure, etc.

[0003] Generally, formwork is required during the construction of the foundation. The construction process of the traditional foundation is: measurement and layout → earth excavation → cushion construction → foundation, ground beam and steel beam construction → earth backfilling → formwork construction → concrete pouring → formwork removal; the traditional foundation construction uses mechanical equipment to excavate earth, and then uses bricks, mortar and other brick formworks. Because the bricks are not a whole, and the mortar takes a certain amount of time to reach a certain strength, and the strength is not high. After the traditional brick formwork construction is completed and reaches the strength, the earth backfilling process must be carried out. The earth backfilling requires repeated mechanical entry for foundation pouring. Due to the low strength of the traditional brick formwork and the small spacing between the brick formworks, it will inevitably lead to large-scale traditional brick formworks being damaged for the second time, resulting in errors in subsequent construction and failure to guarantee the quality of the project.

[0004] Although most of the current projects use new material prefabricated brick formwork for foundation construction, after the construction of the prefabricated brick membrane is completed, during the earth backfilling process, the prefabricated brick formwork will still not be able to withstand the strong lateral force of the earth, resulting in cracks and damage.

[0005] Therefore, it is an urgent problem to be solved how to construct dense foundations for large-span and large-space factory buildings so that earth-moving machinery does not enter repeatedly, reduce secondary damage to the foundations, improve the efficiency of foundation formwork, and shorten the construction period. Utility Model Content

[0006] The purpose of the utility model is to provide an external support system for a prefabricated pedestal formwork, which is based on a new construction process, and the new construction process is: measurement and layout → earth excavation → cushion layer construction → pedestal construction → reinforcement construction → formwork construction → concrete engineering → earth backfilling; the utility model reserves the working surface of the pedestal and the ground beam when carrying out earth excavation, adopts an external support system to reinforce and support the prefabricated brick formwork, and then carries out the earth backfilling process after the pedestal and the ground beam are cast.

[0007] The technical solution of the utility model is: a prefabricated foundation mold external support system, including: a prefabricated brick mold 1, a support system 2 and a fixing system 3; the fixing system 3 is enclosed in the outer periphery of the prefabricated brick mold 1, the support system 2 is enclosed in the outer periphery of the fixing system 3, the fixing system 3 is supported by the support system 2, and fixes the outer periphery of the prefabricated brick mold 1.

[0008] Furthermore, the prefabricated brick formwork 1 is a foundation formwork after the prefabricated brick formwork construction is completed.

[0009] Furthermore, the support system 2 is a four-sided enclosed structure, each side is provided with a plurality of vertically arranged wooden beams 21 , each wooden beam 21 is provided with a plurality of rows of diagonal braces 22 , and the diagonal braces 22 in the same row on the four sides are connected by horizontal braces 23 .

[0010] Furthermore, the fixing system 3 is a four-sided enclosed structure, each side is provided with an array of vertical steel pipes 31 corresponding to the diagonal braces 22, the array of vertical steel pipes 31 on the same side are connected with the first horizontal steel pipes 32 through the first fasteners 33, and the intersection of two adjacent first horizontal steel pipes 32 is connected and fixed by the first fasteners 33; the support system 2 cooperates with the vertical steel pipes 31 through the diagonal braces 22 to support the fixing system 3, and the fixing system 3 fixes the prefabricated brick mold 1 after being supported by the support system 2.

[0011] Furthermore, the diagonal brace 22 includes a diagonal brace steel pipe 221, an adjusting nut 222 and a screw top support 223. The bottom end of the diagonal brace steel pipe 221 is against the wooden square 21. The screw top support 223 is threadedly connected to the adjusting nut 222 and the rear end is inserted into the top pipe opening of the diagonal brace steel pipe 221. The top end of the diagonal brace steel pipe 221 returns to the adjusting nut 222.

[0012] Furthermore, the horizontal support 23 includes a second horizontal steel pipe 231 and a second fastener 232 . The second horizontal steel pipe 231 is connected between the diagonal supports 22 in the same row on each side through the second fastener 232 , and the intersection of two adjacent second horizontal steel pipes 231 is connected and fixed through the second fastener 232 .

[0013] The utility model has the following beneficial effects:

[0014] The utility model is based on a new construction process. When excavating the earth, the utility model reserves the working surface of the pedestal and the ground beam, and uses an external support system to reinforce and support the prefabricated brick formwork. After the pedestal and the ground beam are cast, the earth backfilling process is carried out. After the mechanical excavation, the utility model can be constructed immediately, the assembly time is short, and the pedestal can be cast in a short time. There is no need for the machine to repeatedly enter the completed area to avoid secondary damage; the efficiency of the pedestal formwork is improved, the labor of masonry and casting of the cushion layer is greatly saved, the construction period is greatly shortened, and the overall construction period is saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 The structural schematic diagram of the prefabricated brick mold;

[0017] Figure 3 for Figure 1 Structural diagram of the middle support system;

[0018] Figure 4 for Figure 3 Structural diagram of the middle diagonal brace and horizontal brace;

[0019] Figure 5 for Figure 1 Schematic diagram of the structure of the fixed system;

[0020] In the figure: 1. Prefabricated brick formwork; 2. Support system; 3. Fixing system; 21. Wooden square; 22. Diagonal brace; 221. Diagonal brace steel pipe; 222. Adjusting nut; 223. Screw rod support; 23. Horizontal support; 231. Second horizontal steel pipe; 232. Second fastener; 31. Steel pipe; 32. First horizontal steel pipe; 33. First fastener. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown, a prefabricated foundation mold external support system includes: a prefabricated brick mold 1, a support system 2 and a fixing system 3; the fixing system 3 is enclosed around the outer periphery of the prefabricated brick mold 1, the support system 2 is enclosed between the outer periphery of the fixing system 3 and the foundation pit, the fixing system 3 is supported by the support system 2, and the outer periphery of the prefabricated brick mold 1 is fixed.

[0023] In the embodiment described in the present utility model, the prefabricated brick formwork 1 is a foundation template completed by the prefabricated brick formwork construction. The prefabricated brick formwork used in the prefabricated brick formwork 1 has a specification of 1800mm×600mm×90mm (length×width×height). The prefabricated brick formwork is made by mixing cement and special glue evenly, and then connecting the boards. A layer of anti-cracking tape is added at the connecting part to achieve the assembly effect. The prefabricated foundation template can be cut and assembled according to the actual size of the foundation to complete the foundation template construction.

[0024] Furthermore, when the pedestal height is ≤1200mm, the prefabricated brick mold 1 adopts a single-layer prefabricated pedestal plate; when 1200mm<pedestal height<1800mm, the prefabricated brick mold 1 adopts a double-layer prefabricated plate (height 600mm) for the bottom layer, and the upper layer is reinforced with a single plate and a vertical prefabricated plate (spacing not more than 600mm); when the pedestal height is ≥1800mm, the prefabricated brick mold 1 adopts a double-layer prefabricated plate (height 1200mm) for the bottom two layers, and the upper layer is reinforced with a single plate and a vertical prefabricated plate (spacing not more than 600mm).

[0025] In the embodiment described in the utility model, the support system 2 is a four-sided enclosed structure, each side is provided with a number of vertically arranged wooden squares 21, each wooden square 21 is provided with a number of rows of diagonal braces 22, and the diagonal braces 22 in the same row on the four sides are connected by horizontal braces 23.

[0026] In the embodiment described in the present utility model, the diagonal brace 22 includes a diagonal brace steel pipe 221, an adjusting nut 222 and a screw top support 223. The bottom end of the diagonal brace steel pipe 221 is against the wooden square 21. The screw top support 223 is threadedly connected to the adjusting nut 222 and the rear end is inserted into the top pipe opening of the diagonal brace steel pipe 221. The top end of the diagonal brace steel pipe 221 returns to the adjusting nut 222.

[0027] In the embodiment described in the present utility model, the horizontal support 23 includes a second horizontal steel pipe 231 and a second fastener 232. The second horizontal steel pipe 231 is connected between the diagonal supports 22 in the same row on each side through the second fastener 232, and the intersection of two adjacent second horizontal steel pipes 231 is connected and fixed by the second fastener 232.

[0028] Furthermore, the horizontal interval between the diagonal braces 22 on each side is 600 mm, the inclination angle between the diagonal braces 22 and the ground is 45 to 60 degrees, and two rows of diagonal braces 22 are provided on each wooden square 21 , and the diagonal braces 22 in the same row on each side are reinforced by horizontal supports 23 .

[0029] Furthermore, the specification of the wooden square 21 is 50mm×100mm, and it is placed on the slope surface as the base of the diagonal brace 22. The diagonal brace steel pipe 221 and the second horizontal steel pipe 231 are made of Q235 steel pipe or low-carbon alloy steel. The cross-sectional dimensions of the steel pipe are an outer diameter of 48.3mm and a wall thickness of 3.2mm.

[0030] In the embodiment described in the utility model, the fixing system 3 is a four-sided enclosed structure, each side is provided with an array of vertical steel pipes 31 corresponding to the diagonal braces 22, the array of vertical steel pipes 31 on the same side are connected with the first horizontal steel pipes 32 through the first fasteners 33, and the intersection of two adjacent first horizontal steel pipes 32 is connected and fixed by the first fasteners 33; the support system 2 cooperates with the vertical steel pipes 31 through the diagonal braces 22 to support the fixing system 3, and the fixing system 3 fixes the prefabricated brick mold 1 after being supported by the support system 2.

[0031] Furthermore, the horizontal spacing between the arrays of vertical steel pipes 31 on each side is 600 mm, each group of vertical steel pipes 31 consists of two, and a first horizontal steel pipe 32 is arranged above the diagonal brace 22 . The first horizontal steel pipe 32 is fixed to the vertical steel pipe 31 by a first fastener 33 .

[0032] Furthermore, the vertical steel pipe 31 and the first horizontal steel pipe 32 are made of Q235 steel pipe or low-carbon alloy steel, and the cross-sectional dimensions of the steel pipe are an outer diameter of 48.3 mm and a wall thickness of 3.2 mm.

[0033] Furthermore, the first fastener 33 and the second fastener 232 are made of malleable cast iron with mechanical properties not lower than KTH330-08.

[0034] In order to ensure the reliability and safety of the utility model, during installation, it is necessary to strictly control the connection and fastening between the accessories, as well as the stability of the diagonal brace attached to the wood. During installation, the diagonal brace 22 is set between the fixing system 3 and the wood 21, and the bottom end of the diagonal brace steel pipe 221 is against the wood 21, as the main body of the diagonal brace 22, the screw top support 223 is threadedly connected with the adjusting nut 222, and the rear end is inserted into the top pipe mouth of the diagonal brace steel pipe 221, and the top of the diagonal brace steel pipe 221 is back to the adjusting nut 222, and the screw top support 223 is adjusted to a suitable length by rotating the adjusting nut 222 to be against the vertical steel pipe 31 of the fixing system 3, and the prefabricated brick mold 1 and the fixing system 3 are back to the top, and the installation of the diagonal brace 22 is completed. When pouring concrete on a large-volume foundation, a strong lateral force will be applied to the prefabricated brick mold before the concrete solidifies. This force will be transmitted to the support system 2 through the fixing system 3, making the contact between the diagonal brace 22 and the fixing system 3 and the wooden square 21 closer, thereby achieving a stable support effect.

[0035] In the utility model, except for the prefabricated brick formwork 1 which cannot be reused, all other accessories can be used cyclically. The support system 2 and the fixing system 3 are mature construction materials, which are easy to obtain, and the construction is convenient, fast and easy to be cyclical.

[0036] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A prefabricated cap external support system, characterized in that: include: A prefabricated brick mold (1), a support system (2) and a fixing system (3); the fixing system (3) is enclosed on the periphery of the prefabricated brick mold (1), the support system (2) is enclosed on the periphery of the fixing system (3), the fixing system (3) is supported by the support system (2), and the periphery of the prefabricated brick mold (1) is fixed; the support system (2) is a four-sided enclosed structure, each side is provided with a plurality of vertically arranged wooden squares (21), each wooden square (21) is provided with a plurality of rows of diagonal braces (22), and the diagonal braces (22) in the same row on the four sides are connected by horizontal braces (23). The fixing system (3) is a four-sided enclosed structure, each side is provided with an array of vertical steel pipes (31) corresponding to the diagonal braces (22), the array of vertical steel pipes (31) on the same side are connected to the first horizontal steel pipes (32) via a first fastener (33), and the intersection of two adjacent first horizontal steel pipes (32) is connected and fixed via the first fastener (33); the support system (2) cooperates with the vertical steel pipes (31) via the diagonal braces (22) to support the fixing system (3), and the fixing system (3) fixes the prefabricated brick mold (1) after being supported by the support system (2).

2. A prefabricated cap external support system according to claim 1, characterized in that: The prefabricated brick formwork (1) is a foundation formwork after the prefabricated brick formwork construction is completed.

3. A prefabricated cap external formwork support system according to claim 1, characterized in that: The diagonal brace (22) comprises a diagonal brace steel pipe (221), an adjusting nut (222) and a screw rod support (223); the bottom end of the diagonal brace steel pipe (221) is against the wooden square (21); the screw rod support (223) is threadedly connected to the adjusting nut (222) and the rear end is inserted into the top pipe opening of the diagonal brace steel pipe (221); the top end of the diagonal brace steel pipe (221) is returned to the adjusting nut (222).

4. A prefabricated cap external formwork support system according to claim 1, characterized in that: The horizontal support (23) includes a second horizontal steel pipe (231) and a second fastener (232), each side of which is The diagonal braces (22) in the same row are connected with a second horizontal steel pipe (231) via a second fastener (232). The intersection of two adjacent second horizontal steel pipes (231) is connected and fixed by a second fastener (232).

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