An integrated formwork device and its usage method applicable to pit formation in foundation pits

Abstract

The present invention relates to the technical field of formwork engineering, and specifically discloses an integrated formwork device applicable to the formation of pits in foundation pits and a using method thereof. The integrated formwork device includes a support frame, a plurality of side forms installed on the support frame and arranged parallel to the inner side surface of the pit, and a counterweight installed on the support frame. The side forms are arranged in one-to-one correspondence with the inner side surface of the pit, and a concrete pouring cavity is formed between the two. A plurality of the side forms are sequentially connected to form an installation cavity for installing the support frame. And the using method thereof is also disclosed. The present invention connects the side forms and the support frame to form a whole, avoiding the situation of side form slipping during the concrete pouring process, and further avoiding the phenomenon of slurry leakage and running due to side form slipping, effectively improving the forming quality of the concrete.

Description

Technical Field

[0001] The present invention relates to the technical field of formwork engineering, and more specifically, to an integrated formwork device suitable for forming pits in foundation pits and a using method thereof. Background Art

[0002] Pits in foundation pits usually include elevator pits, sumps, and independent foundation pits, etc.; in the construction of the basement floor slab, 60-degree slopes need to be made for the pits in the foundation pit. For the above-mentioned pits within pits, an excavator is often used for slope treatment, and then manual bottom cleaning is carried out. After the manual bottom cleaning and trench inspection are completed, the foundation cushion is poured. After the cushion concrete strength meets the requirements, the formwork engineering will be entered. The traditional formwork support is carried out in the way of internal and external double supports, and props are used for support on both the outer and inner sides at the same position of the formwork.

[0003] In the formwork support process using the above method, first, the internal framework is erected, then the formwork is arranged, and finally, the positions of the props need to be adjusted multiple times to ensure that the formwork is clamped by the internal and external props; in actual projects, problems such as improper installation of the props often occur due to limited space on the outer side of the formwork. When pouring concrete, due to the force exerted by the vibration of the concrete, the formwork will slip, causing problems such as leakage of mortar and running of mortar, which will seriously affect the forming quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an integrated formwork device suitable for forming pits in foundation pits and a using method thereof; the present invention connects the side formwork and the support frame to form a whole, avoiding the situation of side formwork slipping during the concrete pouring process, and further avoiding the phenomenon of mortar leakage and running due to side formwork slipping, effectively improving the forming quality of the concrete.

[0005] The solution adopted by the present invention to solve the technical problem is:

[0006] On the one hand:

[0007] The present invention discloses an integrated formwork device suitable for forming pits in foundation pits, including a support frame, multiple groups of side formworks installed on the support frame and arranged parallel to the inner side surface of the pit, and a counterweight installed on the support frame; the side formworks are arranged in one-to-one correspondence with the inner side surface of the pit, and a concrete pouring cavity is formed between the two; multiple groups of the side formworks are sequentially connected to form an installation cavity for installing the support frame.

[0008] In some possible implementation manners,

[0009] The side formwork includes a film-covered formwork arranged parallel to the inner side surface of the pit and located above the inner side surface thereof, multiple groups of square timbers installed on the film-covered formwork and arranged in parallel, and multiple groups of clamping devices installed on the square timbers and used for clamping the film-covered formwork and the square timbers.

[0010] In some possible embodiments,

[0011] the clamping device includes a steel pipe unit installed on the wooden square, and a fastener for connecting the steel pipe unit and the film-covered formwork; the steel pipe unit is connected to the support frame.

[0012] In some possible embodiments,

[0013] the fastener includes a lead screw that sequentially passes through the steel pipe unit, the film-covered formwork and extends into the concrete pouring cavity, a connecting steel bar connected to the lead screw and located in the concrete pouring cavity, and a butterfly buckle connected to the end of the lead screw away from the connecting steel bar.

[0014] In some possible embodiments,

[0015] the steel pipe units are multiple groups and are arranged in parallel. Each group of steel pipe units includes two steel pipes arranged in parallel and forming a gap for the lead screw to pass through; the butterfly buckles are respectively buckled with the two steel pipes and are screwed with the lead screw.

[0016] In some possible embodiments,

[0017] the steel pipe unit is arranged horizontally and is perpendicular to the wooden square.

[0018] In some possible embodiments,

[0019] the wooden squares are multiple groups and are arranged at equal intervals.

[0020] In some possible embodiments,

[0021] the support frame is a steel pipe scaffold, including multiple groups of horizontal cross bars whose ends are connected to the steel pipes through fasteners, multiple groups of vertical uprights connected to the cross bars, and diagonal braces for connecting the cross bars and the uprights.

[0022] On the other hand:

[0023] The present invention also discloses a use method of an integrated formwork device suitable for forming a pit in a foundation pit, specifically including the following steps:

[0024] Step S1: Assemble the side formwork and set up the support frame;

[0025] Step S2: Connect the side formwork and the support frame to form a whole;

[0026] Step S3: Hoist the whole into the pit;

[0027] Step S4: Hoist with a counterweight;

[0028] Step S5: Pour concrete;

[0029] Step S6: Formwork removal.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] In the present invention, the side formwork is connected to the support frame to form an integral whole, avoiding the slippage of the side formwork during the concrete pouring process, and further avoiding the phenomena of slurry leakage and running due to the slippage of the side formwork, effectively improving the forming quality of the concrete.

[0032] Compared with the installation of the near-soil side support in the prior art, the present invention only needs to be hoisted to the corresponding position, with high installation efficiency and greater convenience.

[0033] After the present invention is used up, the support frame and the side formwork are disassembled, and the materials can be reused, reducing the construction cost and meeting the requirements of green construction.

[0034] In the present invention, the assembly of the side formwork and the erection of the support frame are carried out in a large space area. The assembly is not affected by the space, and the overall construction efficiency is high. Description of the Drawings

[0035] Figure 1 It is the top view of the side formwork in the present invention;

[0036] Figure 2 It is the structural schematic diagram of the connection between the side formwork and the cross bar in the present invention;

[0037] Figure 3 It is the schematic diagram of the connection relationship between the side formwork and the support frame in the present invention;

[0038] Figure 4 It is the schematic diagram of the present invention installed in the pit;

[0039] Figure 5 It is the structural schematic diagram of the prior art;

[0040] Wherein: 1, side formwork; 11, film-covered formwork; 12, square timber; 13, steel pipe; 14, screw rod; 15, connecting steel bar; 16, butterfly buckle; 2, support frame; 21, cross bar; 3, counterweight; 10, concrete pouring cavity. Detailed Embodiments

[0041] In the present invention, unless otherwise clearly specified or limited, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate that there is at least one. In the implementation of this application, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, unless otherwise stated, the meaning of "a plurality" refers to two or more. For example, a plurality of positioning posts means two or more positioning posts. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] The present invention will be described in detail below.

[0043] As Figures 1-4 shown:

[0044] The present invention discloses an integrated formwork device applicable to pit forming in a foundation pit, including a support frame 2, multiple groups of side forms 1 installed on the support frame 2 and arranged parallel to the inner side surface of the pit, and a counterweight 3 installed on the support frame 2; the side forms 1 are arranged in one-to-one correspondence with the inner side surface of the pit, and a concrete pouring cavity 10 is formed between the two; multiple groups of the side forms 1 are sequentially connected to form an installation cavity for installing the support frame 2.

[0045] During use, first, the side forms 1 and the support frame 2 are erected in an area with a wide space. After the erection of the two is completed, they are assembled so that the assembled overall structure can be hoisted into the pit. After the hoisting is completed, ensure that a concrete pouring cavity 10 is formed between each group of side forms 1 and the side of the pit; after the hoisting is completed, hoist the counterweight 3 onto the support frame 2, and use the added counterweight 3 to prevent the support frame 2 and the side from slipping due to the acting force of concrete vibration during the process of pouring concrete into the concrete pouring cavity.

[0046] After the concrete pouring is completed, first hoist the counterweight 3, and then remove the support frame 2 and the side forms 1. The removed materials can all be reused; greatly reducing the construction cost.

[0047] In some possible implementation manners, in order to effectively assemble the side forms 1 and form a concrete pouring cavity 10 between the side forms 1 and the inner side surface of the pit;

[0048] The side formwork 1 includes a film-covered formwork 11 arranged parallel to the inner side surface of the pit and above the inner side surface thereof, multiple groups of square timbers arranged parallel to each other and mounted on the film-covered formwork 11, and multiple groups of clamping devices mounted on the square timbers and used for clamping the film-covered formwork 11 and the square timbers.

[0049] In some possible embodiments, in order to effectively fix the wooden square 12 to the film-covered formwork 11 and connect it with the support frame 2 to form an integral whole;

[0050] The clamping device includes a steel pipe unit mounted on the wooden square 12 and connected to the support frame 2, and a fastener for connecting the steel pipe unit and the film-covered formwork 11.

[0051] In some possible embodiments, in order to effectively fix the steel pipe unit, the film-covered formwork 11, and the wooden square 12 by the fastener, so that the side formwork 1 forms an integral whole and is connected to the support frame 2;

[0052] The fastener includes a lead screw 14 whose one end sequentially passes through the steel pipe unit and the film-covered formwork 11 and extends into the concrete pouring cavity 10, a connecting steel bar 15 connected to the lead screw 14 and located in the concrete pouring cavity 10, and a butterfly buckle 16 connected to the end of the lead screw 14 away from the connecting steel bar 15.

[0053] One end of the lead screw 14 extends into the concrete pouring cavity 10 and is welded to it with the connecting steel bar 15; the other end of the lead screw 14 sequentially passes through the film-covered formwork 11 and the steel pipe unit and is then connected to the butterfly buckle 16. Through the cooperation of the butterfly buckle 16 with the connecting steel bar 15 and the lead screw 14, the film-covered formwork 11, the wooden square 12, and the steel pipe unit are effectively fixed;

[0054] In some possible embodiments,

[0055] There are multiple groups of the steel pipe units arranged in parallel. Each group of steel pipe units includes two steel pipes 13 arranged in parallel and forming a gap for the lead screw 14 to pass through; the butterfly buckle 16 is respectively buckled with the two steel pipes 13 and screwed with the lead screw 14.

[0056] The two steel pipes 13 are arranged in parallel, and a gap for the lead screw 14 to pass through is formed between them. One end of the lead screw 14 passes through the gap and is then screwed with the butterfly buckle 16;

[0057] The butterfly buckle 16 is a prior art. A groove is provided on the side close to the steel pipe 13, and the outer side surface of the steel pipe 13 will be embedded and installed in the groove. By turning the butterfly buckle 16, the distance between the butterfly buckle 16 and the connecting steel bar 15 changes, thereby realizing the assembly or disassembly of the side formwork 1;

[0058] In some possible embodiments,

[0059] The steel pipe unit is horizontally arranged and perpendicular to the wooden square 12.

[0060] In some possible embodiments,

[0061] There are multiple groups of the wooden squares 12, which are arranged at equal intervals.

[0062] In some possible embodiments,

[0063] The support frame 2 is a steel pipe 13 scaffold, including multiple groups of horizontal crossbars 21 whose ends are connected to the steel pipe 13 by fasteners, multiple groups of vertical upright posts connected to the crossbars 21, and diagonal braces for connecting the crossbars 21 and the upright posts.

[0064] On the other hand:

[0065] The present invention also discloses a usage method of an integrated formwork device applicable to the formation of pits in foundation pits, which specifically includes the following steps:

[0066] Step S1: Assemble the side form 1 and set up the support frame 2;

[0067] The support frame 2 adopts a fastener-type steel pipe 13 scaffold, and each node is connected by a fastener. It is set up according to the size of the pit. For larger pit sizes, calculations are carried out to ensure that the strength, stability, and displacement control of the support frame 2 meet the requirements.

[0068] Step S2: Connect the side form 1 and the support frame 2 to form a whole;

[0069] When assembling the side form 1, first ensure that the screw rod 14 passes through the film-covered formwork 11, and weld the connecting steel bar 15 to one end of the screw rod 14 close to the concrete pouring cavity 10; secondly, arrange the wooden square 12 on the fixed film-covered formwork 11, and place two steel pipes 13 on the wooden square 12 with butterfly buckles 16 to ensure the stability of the film-covered formwork 11; finally, realize the fixed connection between the film-covered formwork 11 and the support frame 2 through the connection of the steel pipe 13 and the crossbar 21 by fasteners;

[0070] Step S3: Use a tower crane or other lifting equipment to hoist the whole formed by the support frame 2 and the side form 1 into the pit;

[0071] It should be noted that before hoisting, it is necessary to lay out lines on the already poured cushion layer to determine the positions of the angles formed between the side forms 1, and then hoisting can be carried out;

[0072] During hoisting, determine the position of the whole device according to the position of the angle to make it meet the requirements;

[0073] Step S4: After the whole formed by the support frame 2 and the side form 1 is hoisted, hoist the counterweight 3;

[0074] Preferably, the counterweight 3 is at least 500 KG. By increasing the weight of the entire device with the counterweight 3, the slippage of the entire device during the concrete pouring process can be further avoided.

[0075] Step S5: Concrete pouring;

[0076] When the pit is trapezoidal, during the concrete pouring, symmetric pouring is carried out, that is, the two sets of concrete pouring cavities 10 arranged oppositely are poured simultaneously.

[0077] Step S6: Form removal.

[0078] After the concrete to be poured reaches the form removal strength, form removal is carried out. First, the counterweight 3 is removed, then the support frame 2 is removed, and finally the butterfly buckle 16, steel pipe 13, wooden square 12, and film-covered form 11 are removed in sequence. The screw rod 14 remaining in the concrete can be cut off; among them, the support frame 2, film-covered form 11, steel pipe 13, butterfly buckle 16, and wooden square 12 can all be recycled and reused.

[0079] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new combination of the steps of any new method or process disclosed.

Claims

1. An integrated formwork device applicable to the formation of pits in foundation pits, characterized in that The invention comprises a support frame, a plurality of side forms installed on the support frame and arranged parallel to the inner side surface of the pit, and a counterweight installed on the support frame; the side forms are arranged one by one in correspondence with the inner side surface of the pit and a concrete pouring cavity is formed between the two; a plurality of side forms are sequentially connected to form an installation cavity for installing the support frame; the side form comprises a film formwork arranged parallel to the inner side surface of the pit and located above the inner side surface thereof, a plurality of square timbers installed on the film formwork and arranged parallel to the film formwork, a plurality of clamping devices installed on the square timbers and used for clamping the film formwork and the square timbers; the clamping device comprises a steel pipe unit installed on the timber square, and a fastener for connecting the steel pipe unit and the film formwork; the steel pipe unit is connected to the support frame; the fastener comprises one end which passes through the steel pipe in sequence Tube units, screw rods covered with membrane formwork and extending into the concrete pouring cavity, connecting steel bars connected to the screw rods and located in the concrete pouring cavity, and butterfly buckles connected to one end of the screw rods away from the connecting steel bars; the steel tube units are in multiple groups and arranged in parallel, and each group of steel tube units includes two groups of steel tubes arranged in parallel and forming a gap for the screw rods to pass through; the butterfly buckles are respectively buckled with the two groups of steel tubes and screwed with the screw rods; the steel tube units are arranged horizontally and perpendicular to the wooden squares; the wooden squares are in multiple groups and arranged with equal gaps; the support frame is a steel tube scaffolding, including multiple groups of horizontally arranged cross bars whose ends are connected to the steel tubes through fasteners, and multiple groups of vertically arranged vertical bars connected to the cross bars; the support frame also includes diagonal braces for connecting the cross bars and the vertical bars.

2. The usage method of an integrated formwork device applicable to pit forming in a foundation pit according to claim 1, characterized in that, The specific steps include: Step S1: assembling the side formwork and setting up the support frame; Step S2: the side mold is connected to the support frame to form a whole; Step S3: hoisting the whole into the pit; Step S4: counterweight hoisting; Step S5: concrete pouring; Step S6: removing the template.

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