How about the telescopic performance of ordinary noise reduction comb plate telescopic device
The expansion and contraction performance of the ordinary noise reduction comb plate expansion device is good, with the following characteristics:
1. adapt to large displacement: the surface plate of the comb plate expansion device is a comb shaped anti-skid groove steel plate, which is a supporting structure with mutual teeth extending from the left and right of the bridge deck gap. The structur
The expansion and contraction performance of the ordinary noise reduction comb plate expansion device is good, with the following characteristics:
1. adapt to large displacement: the surface plate of the comb plate expansion device is a comb shaped anti-skid groove steel plate, which is a supporting structure with mutual teeth extending from the left and right of the bridge deck gap. The structural stiffness is relatively large, and it can withstand large horizontal displacement. Generally, the expansion amount can reach 420mm or more, and it can adapt to the large expansion deformation of bridges with different spans due to temperature changes, load effects and other factors.
2. good guidance: the comb shape provides guidance for the beam during expansion and contraction, ensuring that the beam can remain relatively stable during expansion and contraction, avoiding unstable vibration or displacement, and making the expansion and contraction movement more stable and orderly.
3. it is able to adapt to three-dimensional deformation: some comb plate expansion devices adopt the design of spherical bearing supporting beam, which can effectively meet the three-dimensional rotation of beam body and pier, especially suitable for bridges designed based on the principle of floating system, and can better meet the deformation requirements of bridges in different directions.
4. flexible expansion and contraction: the connection mode between the comb plates and the materials used make the device more flexible during expansion and contraction. For example, the comb plate is usually connected by high-strength bolts, and the connection is not welded, which can effectively reduce the fatigue caused by welding stress. Even after years of use, the parts of the expansion joint are easy to maintain, ensuring the long-term flexible operation of the expansion device. In addition, some parts of the device, such as the sliding support made of high wear-resistant materials, can reduce friction and make the comb plate more smooth in the expansion process.
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