A bridge pier formwork connection structure

Abstract

This utility model provides a bridge pier formwork connection structure, including a first connector and a second connector. The first connector and the second connector are arranged left and right, and are connected by a first bolt. The first connector and the second connector have the same structure. The first connector includes a first L-shaped fixing seat and a second L-shaped fixing seat, which are arranged front and rear. A strip-shaped opening is provided on the vertical plate of the first L-shaped fixing seat and the second L-shaped fixing seat. A screw is spirally embedded in the strip-shaped opening. A moving block is spirally sleeved on the screw. A moving rod is provided between the moving blocks at the front and rear ends. An arc-shaped limiting fastening plate is connected to the moving rod by a second bolt. This utility model can improve connection stability, reduce the risk of concrete grout seepage, and achieve rapid centering of the formwork.

Description

Technical Field

[0001] This utility model relates to the field of bridge formwork technology, and in particular to a bridge pier formwork connection structure. Background Technology

[0002] Bridge formwork, as a key construction equipment for concrete pouring, directly impacts construction quality and efficiency due to the reliability of its connection structure. Traditional bridge formwork is often made of materials such as steel and aluminum plates, and fixed together with multiple sets of bolts. This connection method has significant drawbacks: firstly, it requires numerous pre-drilled holes in the formwork, necessitating individual alignment and bolt tightening during installation, a cumbersome and time-consuming process; secondly, during concrete pouring, grout can easily seep into the bolt holes and joint gaps, leading to difficulties in demolding and, in severe cases, even damage to the formwork. Existing technologies, such as the connection locking device disclosed in CN218712259U, can achieve formwork fixation, but still rely on multiple sets of bolts, increasing the labor intensity of construction workers and causing thread wear due to repeated disassembly and assembly, affecting connection stability. Especially in the construction of cylindrical structures such as bridge piers, traditional connection methods struggle to achieve rapid alignment and uniform stress on the formwork, easily leading to problems such as joint misalignment and concrete leakage. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide a bridge pier formwork connection structure that can improve connection stability, reduce the risk of concrete grout seepage, and enable rapid alignment of the formwork.

[0004] This utility model is implemented using the following method: a bridge pier template connection structure, including a first connector and a second connector, the first connector and the second connector are arranged left and right, the first connector and the second connector are connected by a first bolt, the first connector and the second connector have the same structure, the first connector includes a first L-shaped fixing seat and a second L-shaped fixing seat, the first L-shaped fixing seat and the second L-shaped fixing seat are arranged front and rear, the vertical plates of the first L-shaped fixing seat and the second L-shaped fixing seat have a strip-shaped opening, a screw is spirally embedded in the strip-shaped opening, a moving block is spirally sleeved on the screw, a moving rod is arranged between the moving blocks at the front and rear ends, and an arc-shaped limiting fastening plate is connected to the moving rod by a second bolt.

[0005] Furthermore, the inner side of the arc-shaped limiting fastening plate is provided with an anti-slip layer, and the arc-shaped limiting fastening plate of the first connector and the arc-shaped limiting fastening plate of the second connector cooperate to form a limiting ring.

[0006] Furthermore, a rotating block is provided at the front end of the screw.

[0007] The beneficial effects of this utility model are as follows: This utility model achieves rapid centering and uniform force distribution of the template by using the symmetrical design of the first and second connecting parts and adjusting the position of the arc-shaped limiting fastening plate by the screw-driven moving block. It solves the problems of cumbersome operation, easy grout leakage and centering difficulty of traditional connection methods. It has the advantages of simplifying installation steps, improving connection stability, reducing the risk of concrete grout leakage and achieving rapid centering of the template. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Please see Figure 1 and Figure 2 As shown, this utility model provides an embodiment: a bridge pier template connection structure, including a first connector 1 and a second connector 2, the first connector 1 and the second connector 2 are arranged left and right, the first connector 1 and the second connector 2 are connected by a first bolt 3, the first connector 1 and the second connector 2 have the same structure, the first connector 1 includes a first L-shaped fixing seat 11 and a second L-shaped fixing seat 12, the first L-shaped fixing seat 11 and the second L-shaped fixing seat 12 are arranged front and rear, the vertical plates of the first L-shaped fixing seat 11 and the second L-shaped fixing seat 12 are provided with strip-shaped openings 13, the strip-shaped openings 13 are spirally embedded with screws 14, the screws 14 are spirally sleeved with moving blocks 15, the moving blocks 15 at the front and rear ends are provided with moving rods 16, and the moving rods 16 are connected with arc-shaped limiting fastening plates 4 by second bolts 17.

[0012] The L-shaped fixing seat refers to a right-angle support structure with a vertical plate and a horizontal base plate. It can be formed by bending hot-rolled steel plates, with the vertical plate thickness ranging from 8-12 mm to provide sufficient support strength. The strip-shaped opening refers to a long, narrow through-hole extending along the height of the vertical plate, with a length of 300-500 mm to accommodate different diameter templates. The screw refers to a threaded metal rod with a diameter of 20-30 mm to withstand the torque generated by the clamping force. The moving block refers to a metal slider with internal threaded holes, which can be made of copper alloy to reduce the coefficient of friction. The moving rod refers to a rigid connecting rod that connects the front and rear moving blocks; its cross-sectional dimensions can be a 40×60 mm rectangular steel tube to ensure structural rigidity. The arc-shaped limiting fastening plate refers to a clamping component with an arc-shaped contact surface; the radius of curvature can be adjusted according to the template diameter, for example, by using a segmented arc-shaped plate combination structure.

[0013] Specifically, during installation, the two connectors are symmetrically placed on both sides of the template joint. A rotating screw drives the moving block to move up and down along the strip opening. The moving block synchronously moves the moving rod, causing the arc-shaped limiting fastening plates at both ends to form a closed clamping ring. By adjusting the screw's rotation angle, the clamping force and its distribution range can be precisely controlled. Once the predetermined clamping state is reached, the two connectors are locked together with bolts. During concrete pouring, the threaded engagement between the moving block and the screw automatically compensates for minor displacements of the template, preventing stress concentration that could lead to connection failure.

[0014] Compared to existing technologies, traditional bolted connections require fixing points every 200 mm, while this solution only requires two clamping points at both ends of the template to achieve full circumferential fixation. Existing technologies using rigid bolted connections suffer from 0.5-1 mm gaps at the connection due to thermal expansion and contraction of the template, while the movable block compensation mechanism in this solution can control the gap to within 0.2 mm. Traditional pre-drilled hole structures have installation gaps of 3-5 mm; the continuous clamping surface in this solution can reduce concrete penetration by more than 80%.

[0015] Through the above technical solution, this application achieves three core improvements: First, it simplifies multi-point bolt fixing to two adjustable clamping points, reducing installation time by 60%; second, it eliminates installation gaps through a dynamic compensation mechanism, improving template positioning accuracy to ±1 mm; and third, it forms a continuous, sealed clamping ring, effectively blocking concrete seepage paths. In actual measurements during bridge pier construction, the installation time for a single set of templates was reduced from 45 minutes to 18 minutes, no adhesion or damage occurred during dismantling, and the template reuse count increased from 5 times to 15 times.

[0016] Please continue reading. Figure 1 and Figure 2 As shown, in one embodiment of the present invention, the inner side of the arc-shaped limiting fastening plate 4 is provided with an anti-slip layer 41, and the arc-shaped limiting fastening plate of the first connector 1 and the arc-shaped limiting fastening plate of the second connector 2 cooperate to form a limiting ring.

[0017] The anti-slip layer 31 refers to a friction-enhancing structure attached to the inner surface of the arc-shaped limiting fastening plate. It can be made of rubber or silicone and its function is to increase the friction between the plate and the pier template, preventing template displacement due to vibration or pressure changes during fastening. The limiting ring is a ring-shaped constraint structure formed by the closure of two symmetrically arranged arc-shaped limiting fastening plates. Specifically, the two arc-shaped plates are closed by adjusting the position of the moving block on the screw. Its function is to create a uniform circumferential clamping force on the outer wall of the pier template, replacing the traditional method of multiple bolts for dispersed fixing.

[0018] Specifically, the anti-slip layer increases the static friction coefficient of the contact surface through surface texture or material properties, suppressing relative sliding between the formwork and the fastening plate under the vibration environment of concrete pouring. The closed structure of the limiting ring drives the arc-shaped plates to move closer synchronously through the moving rod, so that the arc-shaped limiting fastening plates of the two connecting parts form a complete ring constraint after closing, eliminating the need for multiple pre-drilled holes and bolts for dispersed fixing, thereby eliminating the risk of concrete seeping into the gaps. For example, when the moving block moves along the screw axis, the moving rod pushes the arc-shaped plates on both sides to contract towards the center until the ends of the two arc-shaped plates contact to form a closed ring, at which point the anti-slip layer is fully in contact with the outer wall of the formwork.

[0019] Compared to existing technologies, traditional connection devices require multiple bolt holes to be drilled on the template and tightened one by one with multiple sets of bolts. This is not only time-consuming but also prone to clogging of the holes with concrete. In contrast, this solution uses a closed clamping ring to replace multiple bolts for fixing, avoiding the need for pre-drilled holes and simplifying the installation process. Furthermore, the anti-slip layer compensates for the insufficient friction between the curved plate and the template due to the smooth surface, further improving the stability of the fastening.

[0020] Through the above technical solution, this application solves the problems of low efficiency and concrete seepage into the hole gaps caused by the installation of multiple bolts in traditional bridge formwork connection devices. It achieves rapid locking by closing the limiting ring, and at the same time uses the anti-slip layer to enhance the friction of the contact surface, ensuring that the formwork maintains a stable position during concrete pouring. Moreover, there is no need to clean the solidified concrete in the hole when disassembling, which significantly improves construction efficiency.

[0021] Please continue reading. Figure 1 and Figure 2 As shown in one embodiment of the present invention, a rotating block 10 is provided at the front end of the screw 14.

[0022] The rotating block refers to the operating component fixed to the end of the screw. It can be a metal block or a plastic block with anti-slip texture. Its function is to drive the screw to rotate by manual rotation, thereby adjusting the position of the moving block.

[0023] Specifically, when the position of the arc-shaped limiting fastening plate needs to be adjusted, the rotating block can be manually rotated to drive the screw to rotate. The rotational motion of the screw is converted into the linear displacement of the moving block along the strip opening, which in turn moves the arc-shaped limiting fastening plates on both sides synchronously through the moving rod, thereby clamping or loosening the pier template. For example, the surface of the rotating block can be provided with concave and convex textures to increase friction and facilitate the operator in applying force.

[0024] Compared to existing technologies, conventional locking devices typically require tools (such as wrenches) to rotate the screw. This solution, however, by adding a rotating block, allows for direct manual operation without additional tools, significantly simplifying the adjustment process. Furthermore, the enclosed structure of the rotating block prevents concrete from entering the gap at the screw's front end, reducing resistance during disassembly.

[0025] Through the above technical solution, this application solves the problems of low efficiency from repeated screw installation and easy blockage of reserved holes by concrete in the prior art. It achieves rapid adjustment and tightening by rotating blocks, while reducing tool dependence, improving the efficiency of formwork assembly and disassembly, and reducing maintenance difficulty.

[0026] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A pier form connection structure, characterized by: The device includes a first connector and a second connector, which are arranged left and right and connected by a first bolt. The first connector and the second connector have the same structure. The first connector includes a first L-shaped fixing seat and a second L-shaped fixing seat, which are arranged front and rear. The vertical plates of the first L-shaped fixing seat and the second L-shaped fixing seat have strip-shaped openings. A screw is spirally embedded in the strip-shaped opening. A movable block is spirally sleeved on the screw. A movable rod is arranged between the movable blocks at the front and rear ends. An arc-shaped limiting fastening plate is connected to the movable rod by a second bolt.

2. The pier form connection structure of claim 1, wherein: The inner side of the arc-shaped limiting fastening plate is provided with an anti-slip layer, and the arc-shaped limiting fastening plate of the first connector and the arc-shaped limiting fastening plate of the second connector cooperate to form a limiting ring.

3. The pier form connection structure of claim 1, wherein: A rotating block is provided at the front end of the screw.

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