Broach type bridge telescopic device and construction method thereof

Abstract

The invention relates to a broach type bridge telescopic device which has the advantages of shifting all around, and being waterproof, slag-proof, noise-reducing, bounce-proof, uniform in stress, symmetrical in design, high in solid pouring safety performance and long in service life. The broach type bridge telescopic device comprises a joint-crossing middle tooth plate (3), first plates (2.1 / 2.2)symmetrically arranged on two sides of the joint-crossing middle tooth plate (3) and a displacement control assembly (5) arranged below the first plates (2.1 / 2.2) and the middle gear plate (3), wherein the upper end part of an elastic element (4) is fixedly arranged below the middle tooth plate (3), the lower end part of the elastic element (4) is fixedly arranged in the middle of a displacementcontrol cross beam (5.1), and displacement control cross beams (5) are connected to integrally ensure synchronization of joint width and an adhesive tape seat plate (6) is used for mounting a waterproof rubber strip (7), the waterproof rubber strip (7) mounted between a stainless steel plate (2) and the adhesive tape seat plate (6) to provide a reliable drainage and waterproof functions for the telescopic device.

Description

technical field [0001] The invention relates to a telescopic device, in particular to a comb-shaped bridge telescopic device and a construction method of the comb-shaped bridge telescopic device. Background technique [0002] At present, the advantages and disadvantages of comb-tooth steel plate telescopic devices commonly used in highway bridges are as follows: The first type is a comb-shaped anti-skid groove steel plate, which protrudes from the left and right out of the gap between the bridge decks and engages with each other. The demand is large, it can withstand large horizontal forces, and the design expansion and contraction can reach 420mm; advantages: the construction height of this expansion device is low, the installation is simple, and it can be installed within the height of the bridge deck pavement, and it has a wide range of applications. It can be used on old bridges, especially for the replacement of large-displacement rubber plate-type telescopic devices ...

AI Technical Summary

Problems solved by technology

Disadvantages: Affected by structural stiffness, the design expansion and contraction should not be too large, and can only be adapted to bridge projects with small and medium expansion

Disadvantages: the cost of the telescopic device is high, which is higher than that of the same type of modular telescopic device; due to the design of the multi-directional displacement system placed inside the tank area, the installation process of the telescopic device is complicated; also because of the structural design of the large and small tooth plates, the telescopic device It has the direction of installation, and the bridge design is basically unable to solve this problem for the sake of uniformity and aesthetic requirements; moreover, for large-displacement telescopic devices, this structure is likely to cause warping of the large tooth plate, which makes a lot of noise when the car passes and jumping, and affect the service life of the telescopic device, and may even cause certain damage to the car tires, causing car crashes such as rollovers

[0003] Therefore, there is an urgent need for a new type of comb-tooth steel plate expansion device in the market, which requires simple installation and a wide range of applications. The most important thing is to further ensure the performance and durability of the existing comb-tooth type steel plate expansion device. Due to the problem that the sliding comb steel plate is easy to warp under the long-term action of the vehicle load, the steel plate expansion device completely eliminates the safety hazard caused by the upward warping of the steel plate for the bridge comb type steel plate expansion device, so as to ensure the lives of the masses and property safety

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