Double-column formwork device at expansion joint

Abstract

The utility model discloses a double-column formwork device at an expansion joint, and belongs to the technical field of building construction, the double-column formwork device at the expansion joint comprises a plurality of column formworks, a concrete pouring cavity is defined by the plurality of column formworks, limiting assemblies are arranged on the outer walls of the column formworks in a surrounding mode, and the limiting assemblies are used for hooping and limiting the column formworks; the extruded sheet is inserted in the middle of the concrete pouring cavity and is used for dividing the concrete pouring cavity into two column pouring cavities; the number of the reinforcing formworks is two, the two reinforcing formworks are arranged on the two opposite sides of the extruded sheet, the second locking pieces are arranged on the two opposite column formworks in a penetrating mode, and the second locking pieces are used for abutting against the reinforcing formworks and extruding the reinforcing formworks to be tightly attached to the extruded sheet. The concrete pouring cavity is divided into the two column pouring cavities through the extruded plate, meanwhile, the extruded plate is reinforced and fixed by matching the reinforcing formwork with the second locking piece, deformation of the extruded plate is greatly reduced, construction is convenient, the formwork dismounting workload is small, and the formwork mounting speed is high.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular, to a double-column formwork device for expansion joints. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this application. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this application.

[0003] In the field of building construction, in multi-story or high-rise frame systems, settlement joints or expansion joints are provided between two adjacent units. The expansion joint is formed by casting two columns on the same foundation, and the middle is filled with extruded polystyrene board as the expansion joint sealant.

[0004] For example, Chinese Patent Publication No. CN115288436A discloses a tool-type formwork and construction method for simultaneous construction of two columns in a narrow expansion joint with a large cross-section. The tool includes: multiple double-column outer formwork pieces circumferentially spliced ​​to enclose the outer perimeter of the two columns, forming a hollow tetrahedron; an expansion joint inner formwork vertically positioned between two parallel double-column outer formwork pieces and located at the gap between the two columns after concrete forming; a wedge-shaped steel back rib set at the top of the expansion joint inner formwork; a transverse tie rod for connecting two adjacent double-column outer formwork pieces on the same plane; and template corner tie rods, template connecting bolts, and template edge sealing angle steel, fixed and set between two adjacent double-column outer formwork pieces whose surfaces form a right angle. This tool-type formwork allows for simultaneous construction of two columns, saving construction time; it is easy to install and can be reused.

[0005] However, the width of expansion joints is generally no more than 200mm. In structural design, frame columns located on expansion joints often use the same foundation, meaning the gap between two columns on the same foundation is generally 200mm. Because this joint is narrow, it's inconvenient to install column formwork, and the formwork is difficult to remove after construction. Extruded polystyrene (XPS) boards are often used to seal the gap, separating the steel reinforcement and concrete of the two columns, and then pouring the concrete for the same column between them. Due to the low strength and stiffness of XPS boards, using conventional formwork methods to sandwich XPS boards between the steel reinforcement of the two columns often results in misalignment during the column concrete pouring process, causing significant dimensional deviations in the columns and affecting the overall quality of the project.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] In view of at least one of the above technical problems, this application provides a double-column formwork device for expansion joints, which can divide the concrete pouring cavity into two column pouring cavities by extruded polystyrene board, and at the same time strengthen and fix the extruded polystyrene board by strengthening the formwork and cooperating with the second locking member, which greatly reduces the deformation of the extruded polystyrene board, and is convenient to construct, with little demolding work and fast formwork installation speed.

[0008] According to one aspect of this application, a double-column formwork device for expansion joints is provided, comprising column formwork, extruded polystyrene board, reinforcing formwork, limiting component, and second locking component:

[0009] The column formwork consists of multiple pieces, which together form a concrete pouring cavity. Limiting components are installed on the outer wall of each column formwork to tighten and limit the column formwork. Extruded polystyrene board is inserted in the middle of the concrete pouring cavity to divide the concrete pouring cavity into two column pouring cavities.

[0010] The reinforcing template consists of two pieces, which are located on opposite sides of the extruded polystyrene board. The second locking member is inserted through the two opposite column templates and is used to press the reinforcing template tightly against the extruded polystyrene board.

[0011] In some embodiments of this application, multiple support members are arranged on the outer side of the column template away from the concrete pouring cavity, and the support members are used to support the limiting component.

[0012] In some embodiments of this application, a limiting groove is provided on the support member, and the limiting groove is used to limit the limiting component.

[0013] In some embodiments of this application, the limiting component includes a first limiting member, a third limiting member, and a connecting member. The first limiting member is disposed at both ends of the width direction of the concrete pouring cavity, and the third limiting member is disposed at both ends of the length direction of the concrete pouring cavity. The first limiting member and the third limiting member are connected by the connecting member to form a limiting frame to simultaneously tighten and limit multiple column templates.

[0014] In some embodiments of this application, the connector includes at least one of a clamp, a cable tie, and a buckle.

[0015] In some embodiments of this application, the limiting component further includes a second limiting member and a clamping member. The second limiting member is arranged side by side next to the first limiting member, and the clamping member is used to bind and lock the first limiting member and the second limiting member together.

[0016] In some embodiments of this application, the double-column template device at the expansion joint further includes a first locking member, which is inserted through two opposing column templates. The first locking member is used to lock and limit the two opposing column templates. The two ends of the first locking member pass through the middle of the first limiting member and the second limiting member on opposite sides, respectively. The first limiting member and the second limiting member are also used to press the first locking member tight.

[0017] In some embodiments of this application, a recessed groove is provided on the first limiting member and / or the second limiting member, and the recessed groove is used to limit and support the first locking member.

[0018] In some embodiments of this application, the double-column template device at the expansion joint further includes a first locking nut. The two ends of the first locking member pass through the middle of the first limiting member and the second limiting member on opposite sides, and then through the clamping member, and are finally connected to the first locking nut by threads.

[0019] In some embodiments of this application, the clamping element includes at least one of a clamp, cable tie, rubber band, braided band, and rope.

[0020] This application has the following beneficial effects:

[0021] This application's double-column formwork device for expansion joints uses multiple column formwork panels to form a concrete pouring cavity. A limiting component synchronously clamps and limits the multiple column formwork panels, ensuring stable enclosure of the concrete pouring cavity. Simultaneously, an extruded polystyrene (XPS) board divides the concrete pouring cavity into two column pouring cavities, enabling rapid pouring of two columns at the expansion joint. The XPS board facing each of the two column pouring cavities is supported and limited by reinforced formwork panels. These reinforced formwork panels are further reinforced and compressed by a second locking component, increasing the strength and rigidity of the XPS board at the expansion joint, facilitating concrete vibration, and minimizing deformation of the expansion joint during concrete pouring. The second locking component also allows for precise positioning of the XPS board at the expansion joint, ensuring accurate positioning of the expansion joint after the column concrete is poured, minimizing XPS board deformation, guaranteeing the column concrete cross-section, and contributing to a straight appearance of the poured double-column expansion joint, improving surface density at the expansion joint.

[0022] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above simultaneously. In addition to the purposes, features, and advantages described above, this application also has other purposes, features, and advantages. The application will be further described in detail below with reference to figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application;

[0025] Figure 2 This is a top view of a column template according to a preferred embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the installation position of the second locking member according to a preferred embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the installation position of the extruded polystyrene board according to a preferred embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the installation of the reinforced template according to a preferred embodiment of this application.

[0029] Legend: 100, Concrete double column; 1, Column formwork; 11, Support component; 2, Extruded polystyrene board; 3, Reinforcing formwork; 4, Limiting component; 41, First limiting component; 42, Second limiting component; 43, Third limiting component; 44, Connecting component; 45, Clamping component; 5, First locking component; 51, First locking nut; 6, Second locking component; 61, Second locking nut. Detailed Implementation

[0030] The embodiments of this application are described in detail below with reference to the accompanying drawings; however, this application may be implemented in a variety of different ways as defined and covered below.

[0031] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application; Figure 2 This is a top view of a column template according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of the installation position of the second locking member according to a preferred embodiment of this application; Figure 4 This is a schematic diagram of the installation position of the extruded polystyrene board according to a preferred embodiment of this application; Figure 5 This is a schematic diagram of the installation of the reinforced template according to a preferred embodiment of this application.

[0032] A double-column formwork device for expansion joints includes a column formwork 1, an extruded polystyrene board 2, a reinforcing formwork 3, a limiting component 4, and a second locking component 6.

[0033] The column formwork 1 is provided in multiple pieces, and the multiple column formwork 1 are enclosed to form a concrete pouring cavity. The limiting component 4 is set on the outer wall of each column formwork 1. The limiting component 4 is used to tighten and limit each column formwork 1. The extruded polystyrene board 2 is inserted in the middle of the concrete pouring cavity. The extruded polystyrene board 2 is used to divide the concrete pouring cavity to form two column pouring cavities.

[0034] Two reinforcing templates 3 are provided, and the two reinforcing templates 3 are located on opposite sides of the extruded polystyrene board 2. The second locking member 6 is inserted through the two opposite column templates 1. The second locking member 6 is used to press the reinforcing templates 3 against the reinforcing templates 3 and squeeze the reinforcing templates 3 tightly against the extruded polystyrene board 2.

[0035] Here, "second locking member 6" refers to a long rod structure that passes through the two opposing column templates 1. In some embodiments, the second locking member 6 is a tie bolt or a long threaded rod, and the second locking member 6 is arranged parallel to the side wall of the reinforcing template 3 so that the reinforcing template 3 can be restrained and reinforced by the second locking member 6. The two ends of the second locking member 6 are also provided with second locking nuts 61, which are threadedly connected to the second locking member 6. The second locking nuts 61 are used to lock and limit the second locking member 6 in conjunction with the column template 1.

[0036] It should be noted that in multi-story or high-rise buildings such as mid-rise and low-rise apartments, the main structure uses a frame structure. An expansion joint of approximately 200mm is set between two units. This expansion joint is formed by two columns cast in place on the same foundation, with extruded polystyrene (XPS) board 2 filling the gap as expansion joint sealant. In previous residential projects, the common method was to fix the XPS board 2 between the two columns using protective layer spacers, and then install the formwork of the two columns as a whole. However, this method results in large deformation of the expansion joint, causing significant deformation of the column cross-section, which can seriously affect the quality of the project.

[0037] This application's double-column formwork device for expansion joints uses multiple column formwork pieces 1 to enclose a concrete pouring cavity. A limiting component 4 synchronously clamps and limits the multiple column formwork pieces 1, ensuring stable enclosure of the concrete pouring cavity. Simultaneously, an extruded polystyrene (XPS) board 2 divides the concrete pouring cavity into two column pouring cavities, enabling rapid pouring of the double columns at the expansion joint. The XPS board 2 is supported and limited on both sides facing the two column pouring cavities by reinforcing formwork pieces 3. These reinforcing formwork pieces 3 are further reinforced and strengthened by a second locking component 6, increasing the strength and rigidity of the XPS board 2 at the expansion joint, facilitating concrete vibration, and minimizing deformation of the expansion joint during concrete pouring. The second locking component 6 also ensures precise positioning of the XPS board 2 at the expansion joint, guaranteeing accurate expansion joint positioning after column concrete pouring, minimal deformation of the XPS board 2, and a consistent column concrete cross-section. Furthermore, it contributes to a straight appearance of the poured double-column expansion joint and improves surface density at the expansion joint.

[0038] This application enhances the strength and rigidity of the extruded polystyrene board 2 in the expansion joint between the two columns and uses the second locking member 6 for precise positioning, so that the extruded polystyrene board 2 does not deform after the concrete of the two columns is poured, the cross-sectional dimensions of the columns are guaranteed, and the construction is convenient, the demolding workload is small, and the formwork installation speed is fast, which helps to reduce labor intensity and save labor.

[0039] Preferably, please refer to Figure 1 , 2 As shown in Figures 3 and 4, multiple support members 11 are arranged on the outer side of the column formwork 1 away from the concrete pouring cavity. The support members 11 are used to support the limiting component 4.

[0040] It is understandable that the multiple support members 11 are arranged in a row with gaps between each support member 11. The support members 11 support the limiting component 4, which avoids the limiting component 4 from directly contacting and easily bumping and damaging the column template 1. This helps to extend the service life of the column template 1 and facilitates the disassembly and assembly of the limiting component 4.

[0041] In some embodiments, the support member 11 has a convex strip structure, and the gap between each support member 11 facilitates the installation and disassembly of the limiting component 4.

[0042] Optionally, a limiting groove is provided on the support member 11, which is used to limit the limiting component 4.

[0043] It is understandable that by opening a limiting groove on the outside of the support member 11, the limiting component 4 can be limited and supported through the limiting groove, which facilitates the positioning and installation of the limiting component 4 and can effectively improve the synchronous clamping and limiting of the limiting component 4 on each column template 1.

[0044] Preferably, please refer to Figure 1 , 2 As shown in Figure 3, the limiting component 4 includes a first limiting member 41, a third limiting member 43, and a connecting member 44. The first limiting member 41 is located at both ends of the width direction of the concrete pouring cavity, and the third limiting member 43 is located at both ends of the length direction of the concrete pouring cavity. The first limiting member 41 and the third limiting member 43 are connected by the connecting member 44 to form a limiting frame to simultaneously tighten and limit multiple column templates 1.

[0045] Understandably, there are two first limiting members 41 arranged opposite each other, and two third limiting members 43 are also provided. The two third limiting members 43 and the two first limiting members 41 together form a limiting frame to simultaneously clamp and limit multiple column formwork pieces 1, so that the column formwork pieces 1 are stably enclosed to form a concrete pouring cavity, ensuring the stability of the connection of the column formwork pieces 1 and facilitating concrete pouring and vibration. This ensures the surface quality of the column concrete.

[0046] Optionally, the connector 44 includes at least one of a clamp, cable tie, and lock. It is understood that the connector 44 uses standard components commonly used on construction sites, which helps reduce manufacturing costs, facilitates the procurement and replacement of components, and reduces construction difficulty, requiring no special construction instructions.

[0047] Preferably, please refer to Figure 1 , 2 As shown in Figures 3 and 4, the limiting component 4 also includes a second limiting member 42 and a clamping member 45. The second limiting member 42 is arranged side by side next to the first limiting member 41, and the clamping member 45 is used to bind and lock the first limiting member 41 and the second limiting member 42 together.

[0048] Understandably, the second limiting member 42 works in conjunction with the first limiting member 41 to reinforce and fix the column formwork 1 on the longer side, ensuring the stability of the column formwork 1. At the same time, the clamping member 45 stably binds and locks the first limiting member 41 and the second limiting member 42 into a whole, effectively improving the overall rigidity and strength, reducing deformation caused by impact and compression, and ensuring the stability and quality of the column concrete pouring construction.

[0049] Optionally, the first limiting component 41, the second limiting component 42 and the third limiting component 43 are all made of steel pipes from the construction site, which can realize the use of local materials, reduce costs, and facilitate the turnover of parts, so as to implement the concept of green construction.

[0050] In some embodiments, the first limiting member 41 and the second limiting member 42 are arranged alternately. The first limiting member 41 on one side can be connected to the first third limiting member 43 through the connecting member 44, and the second limiting member 42 on the other side can be connected to the second third limiting member 43 through the connecting member 44. Since the first limiting member 41 and the second limiting member 42 are already tightly connected by the clamping member 45, the first limiting member 41, the second limiting member 42 and the third limiting member 43 are tightly connected, which has high strength and rigidity and effectively achieves stable clamping and limiting of multiple column templates 1.

[0051] Preferably, please refer to Figure 2 , 3 As shown in Figure 4, the double-column formwork device at the expansion joint also includes a first locking member 5. The first locking member 5 is inserted through the two opposing column formworks 1. The first locking member 5 is used to lock and limit the two opposing column formworks 1. The two ends of the first locking member 5 pass through the middle of the first limiting member 41 and the second limiting member 42 on the opposite sides, respectively. The first limiting member 41 and the second limiting member 42 are also used to press the first locking member 5 tightly.

[0052] Understandably, the first locking member 5 helps to enhance the positioning stability of the two column formwork pieces 1 on opposite sides, which helps to ensure the smooth pouring of concrete, thereby ensuring construction efficiency and quality. Furthermore, the first locking member 5 is further tightened and limited by the first limiting member 41 and the second limiting member 42, which enhances the connection stability of the first locking member 5 and facilitates the connection of the two opposite column formwork pieces 1 with the limiting component 4 into a more stable whole.

[0053] In this preferred embodiment, the first limiting member 41 and the second limiting member 42 are both provided with recessed grooves at their relative positions. The recessed grooves are used to limit and support the first locking member 5.

[0054] It is understandable that by providing recessed grooves on the first limiting member 41 and / or the second limiting member 42, and since the first limiting member 41 and the second limiting member 42 are arranged vertically opposite each other, the recessed grooves of the first limiting member 41 and the second limiting member 42 form a near-circular limiting ring to support and limit the first locking member 5. This ensures that the first locking member 5 is not prone to displacement or deformation when the first limiting member 41 and the second limiting member 42 are pressing and limiting it, thereby further improving the connection stability of the first locking member 5.

[0055] In this preferred embodiment, specifically, the double-column template device at the expansion joint further includes a first locking nut 51. The two ends of the first locking member 5 pass through the middle of the first limiting member 41 and the second limiting member 42 on opposite sides and then through the clamping member 45, and finally connect with the first locking nut 51 by threads.

[0056] It is understandable that the first locking nut 51, in conjunction with the clamping member 45, can lock and limit the first locking member 5. Since the first locking member 5 is also mounted on the clamping member 45, while the clamping member 45 can already provide support and limit the first locking member 5, the locking and limiting effect of the first locking member 5 can be further enhanced by the first locking nut 51 in conjunction with the clamping member 45.

[0057] Optionally, the clamping element 45 includes at least one of a clamp, cable tie, rubber band, braided band, and rope.

[0058] Understandably, the use of existing mature components in the clamping part 45 helps reduce manufacturing costs and facilitates procurement and subsequent turnover or maintenance and replacement.

[0059] In summary, this application installs 5mm thick reinforcing templates 3 on both sides of the extruded polystyrene board 2 at the interface with the concrete, and then uses a second locking member 6 to clamp the reinforcing templates 3 and the extruded polystyrene board 2 at the expansion joint, thus fixing the position of the extruded polystyrene board 2. This ensures that the extruded polystyrene board 2 does not deform after the double column concrete is poured, the cross-sectional dimensions of the column are guaranteed, and this method has the advantages of convenient construction, small amount of demolding work, fast template installation speed, reduced labor intensity and labor saving.

[0060] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the method and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered as protected by this application.

Claims

1. A twin column formwork arrangement at a contraction joint, characterised in that, The device comprises column templates (1), extruded sheets (2), reinforcing templates (3), limiting assemblies (4) and second locking members (6). The column templates (1) are arranged in multiple pieces, and the multiple column templates (1) are arranged to form a concrete pouring cavity. The limiting assemblies (4) are arranged on the outer walls of the column templates (1), and the limiting assemblies (4) are used to tightly clamp and limit the column templates (1). The extruded sheets (2) are arranged in the middle of the concrete pouring cavity, and the extruded sheets (2) are used to separate the concrete pouring cavity into two column pouring cavities. The reinforcing templates (3) are arranged in two pieces, and the two reinforcing templates (3) are arranged on opposite sides of the extruded sheets (2). The second locking members (6) are arranged on the opposite column templates (1), and the second locking members (6) are used to tightly clamp the reinforcing templates (3) and extrude the reinforcing templates (3) to tightly clamp the extruded sheets (2).

2. The dual column formwork assembly of claim 1, wherein, The outer side of the column templates (1) away from the concrete pouring cavity is arranged with a plurality of supporting members (11), and the supporting members (11) are used to support the limiting assemblies (4).

3. The dual column formwork assembly of claim 2, wherein, Limiting grooves are arranged on the supporting members (11), and the limiting grooves are used to limit the limiting assemblies (4).

4. The dual column formwork assembly of claim 1 or 3, wherein, The limiting assemblies (4) comprise first limiting members (41), third limiting members (43) and connecting members (44). The first limiting members (41) are arranged at both ends of the width direction of the concrete pouring cavity. The third limiting members (43) are arranged at both ends of the length direction of the concrete pouring cavity. The first limiting members (41) and the third limiting members (43) are connected by the connecting members (44) to form a limiting frame to tightly clamp and limit the multiple column templates (1).

5. The dual column formwork assembly of claim 4, wherein, The connecting members (44) comprise at least one of a hoop, a strap and a lock.

6. The dual column formwork assembly at a contraction joint of claim 4, wherein, The limiting assemblies (4) further comprise second limiting members (42) and a clamping member (45). The second limiting members (42) are arranged beside the first limiting members (41). The clamping member (45) is used to bundle and lock the first limiting members (41) and the second limiting members (42).

7. A twin column formwork arrangement at a contraction joint according to claim 6, wherein, The device further comprises first locking members (5). The first locking members (5) are arranged on the opposite column templates (1), and the first locking members (5) are used to tightly clamp and limit the opposite column templates (1). The two ends of the first locking members (5) pass through the first limiting members (41) and the second limiting members (42) on the opposite sides. The first limiting members (41) and the second limiting members (42) are further used to tightly clamp the first locking members (5).

8. The dual column formwork assembly at a contraction joint of claim 7, wherein, Sunken grooves are arranged on the first limiting members (41) and / or the second limiting members (42), and the sunken grooves are used to limit and support the first locking members (5).

9. The dual post form assembly of claim 7, wherein, The device further comprises first locking nuts (51). The two ends of the first locking members (5) pass through the first limiting members (41) and the second limiting members (42) on the opposite sides, and then pass through the clamping member (45). Finally, the first locking members (5) are connected with the first locking nuts (51) through threads.

10. A twin column formwork arrangement for expansion joints according to claim 6 or 7 or 9, wherein, The clamping member (45) comprises at least one of a hoop, a strap, a rubber band, a woven band and a rope.

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