Anti-segregation concrete column formwork reserved port structure

Abstract

The utility model discloses a kind of concrete column formwork reserved mouth structures of anti-segregation, to overcome the defect that current pouring height higher concrete column pouring is easy to produce segregation, and traditional anti-segregation measures is difficult to effectively implement in steel dense structure. The structure includes pouring frame body, locking assembly and plugging assembly;Wherein, the pouring frame body is installed at the reserved mouth of concrete column formwork, and pouring channel for concrete pumping is formed in pouring frame body center;The locking assembly is arranged on the upper and lower sides of the pouring frame body, for detachably locking the pouring frame body on the concrete column formwork;The plugging assembly is rotatably connected on one side of the pouring frame body by rotating mechanism, for closing the pouring channel after concrete pouring is completed. The structure can reduce the falling height of concrete, reduce aggregate segregation, and realize the rapid plugging of formwork reserved mouth.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a pre-reserved opening structure for a concrete column formwork to prevent segregation, which is particularly suitable for the pouring construction of concrete columns with high pouring height and dense reinforcement. Background Technology

[0002] Concrete columns play a crucial role in bearing vertical loads in structures such as the core tubes of high-rise buildings, large-span industrial plants, and bridge piers. In these structures, the concrete columns are quite tall, and the structural reinforcement is extremely dense. The chutes or pipes used in conventional pouring have cross-sectional dimensions much larger than the clear spacing of the reinforcement in the joint area, making it impossible for them to penetrate the dense reinforcement mesh and extend into the formwork. The concrete often falls from a height of 3-5 meters or even higher. Under the action of gravity, the coarse aggregate and cement mortar inside the concrete separate significantly due to the density difference, ultimately leading to segregation, where the lower part of the column end has dense aggregate accumulation and the upper part has mortar enrichment.

[0003] To address this issue, multi-segment casting and side formwork openings are commonly used for these concrete columns. However, multi-segment casting suffers from common problems such as poor bonding between old and new concrete and easy water seepage at construction joints. Formwork joints are also prone to defects like grout leakage and misalignment, affecting the overall structural integrity and appearance. While side formwork openings can reduce the concrete drop height, sealing the openings is difficult, leading to grout leakage, honeycombing, and other defects, resulting in poor construction flexibility.

[0004] Therefore, there is an urgent need for a standardized template pre-reserved opening structure that can be quickly installed, reliably sealed, and reused to cope with high-height, densely reinforced concrete pouring construction. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a pre-reserved opening structure for concrete column formwork to prevent segregation. This aims to overcome the shortcomings of current concrete column pouring with high pouring height that is prone to segregation, and the difficulty in effectively implementing traditional anti-segregation measures in densely reinforced structures. It also solves the problems of arbitrary construction of lateral openings in formwork, low installation efficiency, poor sealing, easy leakage of grout, and impact on molding quality in the existing technology.

[0006] To solve the above-mentioned technical problems, this anti-segregation concrete column formwork reserved opening structure includes a pouring frame, a locking component, and a sealing component. The pouring frame is installed at the reserved opening of the concrete column formwork, and a pouring channel for pumping concrete is formed in the center of the pouring frame. The locking component is located on the upper and lower sides of the pouring frame and is used to detachably lock the pouring frame to the concrete column formwork. The sealing component is rotatably connected to one side of the pouring frame via a rotating mechanism and is used to close the pouring channel after the concrete pouring is completed.

[0007] Furthermore, the casting frame has a sealing groove on the inner wall of the casting channel, and an elastic sealing element is provided in the sealing groove.

[0008] Furthermore, at least two sets of locking components are provided, symmetrically distributed on opposite sides of the casting frame. Each set of locking components includes a locking screw passing through the casting frame, a hook seat threaded to the locking screw, and a hook body hinged to the hook seat.

[0009] Furthermore, the sealing assembly includes a hinged arm connected to one side of the casting frame via a hinge, a sealing disc fixedly connected to the end of the hinged arm away from the hinge and capable of extending into the casting channel, and a fastening lug disposed on one side of the sealing disc; the fastening lug is provided with a fastening bolt, and the casting frame is provided with a threaded hole at a corresponding position that mates with the fastening bolt.

[0010] The pre-reserved opening structure for the anti-segregation concrete column formwork of this utility model should be set in a location that avoids the dense reinforcement zone of the column joint, ensuring that the continuity of the main reinforcement and the structural stress performance are not affected during installation. If the vertical reinforcement of the column can pass through the pump pipe, the pre-reserved opening should preferably be arranged between the gaps of adjacent longitudinal reinforcements to avoid cutting or disturbing the main reinforcement. If the vertical reinforcement of the column is too dense to avoid, the pre-reserved opening can be set in the gap of the stirrups. In this case, the height of the pre-reserved hole from the bottom of the column should not exceed the maximum free fall height of concrete allowed by the specification to ensure that segregation does not occur during pouring. After pouring, rotate the sealing component to close it, and fix the sealing plate to the pouring frame with fastening bolts to achieve rapid sealing and ensure the subsequent concrete forming quality and structural integrity.

[0011] If a single placement is insufficient to meet the pouring requirements, a pre-reserved opening structure is installed at each allowable free fall height of concrete according to specifications, allowing for segmented pouring and ensuring that the concrete meets design requirements in terms of density and uniformity. Through the synergistic action of elastic seals and sealing components, along with the tension-type locking assembly and embedded sealing disc design, grout leakage is effectively prevented, guaranteeing the pouring quality and appearance of the column concrete. Attached Figure Description

[0012] The following description, in conjunction with the accompanying drawings, further illustrates the pre-reserved opening structure for anti-segregation concrete column formwork according to this utility model: Figure 1 This is a schematic diagram of the overall structure of the pre-reserved opening structure for the anti-segregation concrete column formwork; Figure 2 yes Figure 1 Rear view; Figure 3 This is a reference diagram showing the usage status of the pre-reserved opening structure of the anti-segregation concrete column formwork (the sealing component opens the pre-reserved opening). Figure 4 yes Figure 3A magnified view of part A in the middle; Figure 5 This is a reference diagram showing the usage status of the pre-reserved opening structure of the anti-segregation concrete column formwork (sealing component closes the pre-reserved opening). Figure 6 yes Figure 5 A magnified view of part B in the middle.

[0013] In the picture: 100 - Template, 200 - Reinforcing rib; 1-Casting frame; 11-Casting channel; 12-Sealing element; 13-Threaded hole; 2-Locking assembly; 21-Locking screw; 22-Hook seat; 23-Hook body; 3-Sealing assembly; 31-Rotating mechanism; 32-Hinged arm; 33-Sealing disc; 34-Fasting lug; 35-Fasting bolt. Detailed Implementation

[0014] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0015] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] The present invention will be further described below with specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.

[0017] Implementation method 1: such as Figures 1 to 6As shown, the pre-reserved opening structure of this anti-segregation concrete column formwork includes a pouring frame 1, a locking component 2, and a sealing component 3. The pouring frame 1 is installed at the pre-reserved opening of the concrete column formwork 100, and a pouring channel 11 for pumping concrete is formed in the center of the pouring frame 1. The locking component 2 is disposed on the upper and lower sides of the pouring frame 1 and is used to detachably lock the pouring frame 1 onto the concrete column formwork 100. The sealing component 3 is rotatably connected to one side of the pouring frame 1 via a rotating mechanism 31 and is used to close the pouring channel 11 after the concrete pouring is completed.

[0018] Implementation method 2: such as Figures 2 to 4As shown, the pre-reserved opening structure of this anti-segregation concrete column formwork has a sealing groove on the inner wall of the pouring channel 11, and an elastic sealing element 12 is installed in the sealing groove. When the concrete delivery pipe port extends into or the sealing plate 33 closes the pouring channel 11, it abuts against the elastic sealing element 12 to form a seal. The pouring frame 1, as the main body of the entire structure, is usually made of high-strength materials such as steel, and its outer perimeter is square to facilitate installation in the blank area between the longitudinal and transverse connecting ribs 200 (such as steel pipes, timber, etc.) on the outside of the formwork 100. Using the pouring channel 11, the opening of the concrete delivery pipe pumps concrete into the formwork through this channel. The sealing element 12 is used to achieve a reliable seal between the extended delivery pipe and the closed sealing plate 33. At least two sets of locking components 2 are symmetrically distributed on opposite sides of the casting frame 1. Each set of locking components 2 includes a locking screw 21 passing through the casting frame 1, a hook seat 22 threaded to the locking screw 21, and a hook body 23 hinged to the hook seat 22. The hook body 23 is used to hook onto the reinforcing rib 200 located on the outside of the concrete column formwork 100. The locking screw 21 drives the hook seat 22 to tighten the hook body 23, thereby pressing the casting frame 1 firmly against the outer wall of the concrete column formwork 100. During installation, the hook body 23 hooks onto the reinforcing rib 200, and then the handle of the locking screw 21 is rotated. Due to the action of the threaded pair, the hook seat 22 moves along the axial direction of the locking screw 21 toward the casting frame 1, thereby tightening the hook body 23 and generating a huge tension force, pressing the entire casting frame 1 tightly against the outer wall of the formwork 100. This tensioning fixing method is more stable than the simple push-type fixing. The sealing assembly 3 includes a hinged arm 32 connected to one side of the casting frame 1 via a hinge, a sealing disc 33 fixedly connected to the end of the hinged arm 32 away from the hinge and capable of extending into the casting channel 11, and a fastening lug 34 disposed on one side of the sealing disc. The fastening lug 34 is provided with a fastening bolt 35, and the casting frame 1 has a threaded hole 13 at a corresponding position that mates with the fastening bolt 35. After the sealing assembly 3 is closed, it locks in place. After the sealing disc 33 closes the casting channel 11, its inner surface is flush with the inner wall of the concrete column formwork 100. The remaining structures and components are as described in Embodiment 1 and will not be repeated.

[0019] During construction: First, make a pre-reserved opening at the preset height (e.g., the middle) of the formwork 100. Align the pouring frame 1 of this pre-reserved opening structure with the pre-reserved opening, hang the hook 23 of the locking component 2 on the reinforcing rib 200, and rotate the locking screw 21 to complete the quick fixation. After installation, open the sealing component 3, align the concrete delivery pipe with the pouring channel 11, pump concrete and perform vibration operation until the lower half of the column is poured. Then remove the delivery pipe, quickly close the sealing component 3 and lock it with the fastening bolt 35. Finally, the remaining concrete can be poured from the top of the formwork 100 until the construction of the entire column is completed. After the concrete has solidified, loosen the locking component 2, and the entire structure can be disassembled for reuse.

[0020] This anti-segregation concrete column formwork pre-reserved opening structure achieves standardization and tooling by using a casting frame with locking components and an integrated sealing component. During construction, this structure can be quickly and securely installed onto the pre-reserved opening in the formwork for pouring and vibration operations, effectively reducing the concrete drop height and preventing segregation. The tension-type locking components and embedded sealing plate design effectively prevent grout leakage, ensuring the pouring quality and appearance quality of the column concrete. Specifically, (1) By using this structure in conjunction with the pouring port in the middle of the template to achieve pouring, the actual drop height of concrete is significantly reduced, segregation is avoided, and the uniformity and density of concrete are guaranteed.

[0021] (2) The locking component adopts a tensioning structure, which can quickly and stably fix the casting frame on the template. The installation process is efficient and reliable, and it can withstand the vibration and impact during casting.

[0022] (3) The sealing component adopts a rotating connection and an embedded sealing plate design to achieve a convenient closing operation similar to closing a door; the sealing plate is flush with the inner wall of the template, ensuring that the surface of the column is flat and smooth after demolding, reducing the later repair work; together with the sealing element, it can effectively prevent grout leakage and ensure that the lateral pressure can be reliably borne when the upper concrete continues to be poured.

[0023] (4) The overall structure breaks through the limitations of traditional chutes and ducts on the spacing of internal steel bars, and can be widely applied to the construction of various densely reinforced concrete columns, and has high promotion value.

[0024] The above description illustrates the main features, basic principles, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments or examples described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments or examples should be considered exemplary and not restrictive. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pre-reserved opening structure for a concrete column formwork to prevent segregation, characterized in that: It includes a casting frame (1), a locking assembly (2), and a sealing assembly (3); among which, The casting frame (1) is installed at the reserved opening of the concrete column formwork (100), and a casting channel (11) for pumping concrete is formed in the center of the casting frame (1); the locking component (2) is set on the upper and lower sides of the casting frame (1) for detachably locking the casting frame (1) onto the concrete column formwork (100); the sealing component (3) is rotatably connected to one side of the casting frame (1) through the rotating mechanism (31) for sealing the casting channel (11) after the concrete is poured.

2. The pre-reserved opening structure for anti-segregation concrete column formwork according to claim 1, characterized in that: The casting frame (1) has a sealing groove on the inner wall of the casting channel (11), and an elastic sealing element (12) is provided in the sealing groove.

3. The pre-reserved opening structure for anti-segregation concrete column formwork according to claim 2, characterized in that: At least two sets of locking components (2) are provided, symmetrically distributed on opposite sides of the casting frame (1). Each set of locking components (2) includes a locking screw (21) passing through the casting frame (1), a hook seat (22) threaded to the locking screw (21), and a hook body (23) hinged to the hook seat (22).

4. The pre-reserved opening structure for anti-segregation concrete column formwork according to claim 3, characterized in that: The sealing assembly (3) includes a hinged arm (32) connected to one side of the casting frame (1) via a hinge, a sealing disc (33) fixedly connected to the end of the hinged arm (32) away from the hinge and capable of extending into the casting channel (11), and a fastening lug (34) provided on one side of the sealing disc; the fastening lug (34) is provided with a fastening bolt (35), and the casting frame (1) is provided with a threaded hole (13) at a corresponding position that mates with the fastening bolt (35).

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