A new type of bridge expansion joint accurate positioning anchoring device

Abstract

The utility model belongs to the field of bridge construction, especially relates to a new -type bridge expansion joint accurate positioning anchorage device, including the channel rail, be equipped with several C type rail sliders on the channel rail, be equipped with the slot on the rail slider upper end surface, pass through a threaded cylinder in the slot, the threaded cylinder is connected with the positioning rib in the thread, and the threaded cylinder bottom surface outer periphery is equipped with the anti -drop ring. The present application changes the traditional construction sequence of the positioning rib, the positioning rib can be installed after the completion of the bridge construction, avoids the disturbance of the bridge construction to the positioning rib, no longer needs to reset the reinforcing bar in the later period, avoids the crack problem caused thereby, and guarantees the engineering quality.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction, and specifically relates to a novel bridge expansion joint precise positioning and anchoring device. Background Technology

[0002] The primary function of bridge expansion joint positioning bars is to ensure the accurate positioning of the expansion joint within the bridge structure. These bars fix the expansion joint in its predetermined position, ensuring it maintains the designed distance from the beam end and preventing displacement. Currently, most bridge expansion joint positioning bars are pre-embedded in the reserved groove of the expansion joint during concrete pouring. However, since the expansion joint is installed after a series of bridge deck construction processes, the positioning bars are easily disturbed and damaged during these processes. For example, various construction vehicles repeatedly pass over the bridge deck. Disturbed positioning bars need to be repositioned, but repositioning alters the original design load-bearing structure of the positioning bars, affecting the concrete strength of the expansion joint and making it prone to cracking later. Summary of the Invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a new type of bridge expansion joint precise positioning and anchoring device.

[0004] This invention is achieved through the following technical solution: A novel bridge expansion joint precise positioning and anchoring device includes an I-shaped guide rail with several C-shaped guide rail sliders. The guide rail sliders can slide back and forth along the upper surface of the I-shaped guide rail. A slot is provided on the upper end face of the guide rail slider, and a threaded cylinder passes through the slot. The outer diameter of the threaded cylinder is equal to the width of the slot. A positioning rib is threaded inside the threaded cylinder. An anti-detachment ring is provided on the outer periphery of the bottom surface of the threaded cylinder, and the outer diameter of the anti-detachment ring is larger than the width of the slot.

[0005] Preferably, the positioning bar is a threaded steel bar.

[0006] Preferably, the I-shaped guide rail is made of I-beam steel.

[0007] The novel bridge expansion joint precision positioning and anchoring device of the present invention changes the traditional construction sequence of positioning bars. The positioning bars can be installed after the bridge deck construction is completed, avoiding disturbance to the positioning bars during bridge deck construction. The bars do not need to be reinstalled later, thus avoiding cracking problems and ensuring project quality. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure in this embodiment; Figure 2 This is a schematic diagram of the guide rail slider structure in this embodiment; Figure 3 This is a schematic diagram of the threaded cylinder structure in this embodiment.

[0009] In the diagram, 1 is an I-shaped guide rail, 2 is a guide rail slider, 3 is a slot, 4 is a threaded cylinder, 5 is a positioning rib, and 6 is an anti-detachment ring. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0011] This embodiment includes an I-shaped guide rail 1, which can be made of I-beams and is pre-embedded in a groove reserved in the expansion joint. Several C-shaped guide rail sliders 2 are provided on the I-shaped guide rail 1, and the guide rail sliders 2 can slide back and forth along the upper surface of the I-shaped guide rail 1. A slot 3 is provided on the upper end face of the guide rail slider 2, extending downwards through the guide rail slider 2. A threaded cylinder 4 passes through the slot 3, and the outer diameter of the threaded cylinder 4 is equal to the width of the slot 3. The inner surface of the threaded cylinder 4 has internal threads, and the internal threads of the threaded cylinder 4 are connected to vertical positioning ribs 5, which can be made of threaded steel bars. To prevent the threaded cylinder 4 from slipping upwards out of the slot 3, an anti-slip ring 6 is provided on the outer circumference of the bottom surface of the threaded cylinder 4, and the outer diameter of the anti-slip ring 6 is larger than the width of the slot 3.

[0012] During construction, before pouring the expansion joint pre-reserved groove, first place two I-shaped guide rails 1 symmetrically at the designed positions of the left and right positioning ribs 5 in the pre-reserved groove. Then, use a plastic template to block the position of the guide rail slider 2, ensuring that no concrete is poured in the space where the guide rail slider 2 slides. Then, pour the concrete, and the upper surface of the poured concrete is flush with the upper surface of the I-shaped guide rail 1, forming the expansion joint pre-reserved groove. The I-shaped guide rail 1 is then embedded in the expansion joint pre-reserved groove. Then, carry out the construction of other bridge deck procedures. After the bridge deck construction is completed, remove the plastic template and clean out the space where the guide rail slider 2 slides. Then, slide the guide rail slider 2 onto the I-shaped guide rail 1 from one end. Slide the guide rail slider 2 so that the distance between adjacent guide rail sliders 2 is equal to the distance between the designed positioning ribs 5. Tighten the positioning ribs 5 into the threaded cylinder 4 so that the bottom end of the positioning rib 5 tightly abuts against the upper surface of the I-shaped guide rail 1, so that the guide rail slider 2 can no longer move. Install the positioning ribs 5 on both sides in sequence, and then carry out the installation of the expansion joint according to the positioning ribs 5.

[0013] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; those skilled in the art should understand that modifications can still be made to the technical solutions described in the above embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A novel bridge expansion joint precision positioning and anchoring device, characterized in that: The system includes an I-shaped guide rail (1), on which several C-shaped guide rail sliders (2) are provided. The guide rail sliders (2) can slide back and forth along the upper surface of the I-shaped guide rail (1). A slot (3) is provided on the upper end face of the guide rail slider (2). A threaded cylinder (4) passes through the slot (3). The outer diameter of the threaded cylinder (4) is equal to the width of the slot (3). The threaded cylinder (4) is connected to a positioning rib (5) by a thread. An anti-detachment ring (6) is provided on the outer periphery of the bottom surface of the threaded cylinder (4). The outer diameter of the anti-detachment ring (6) is greater than the width of the slot (3).

2. The novel bridge expansion joint precision positioning and anchoring device according to claim 1, characterized in that: The positioning bar (5) is a threaded steel bar.

3. The novel bridge expansion joint precision positioning and anchoring device according to claim 1, characterized in that: The I-shaped guide rail (1) is made of I-beam steel.

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