Full-paving periodic cushion layer vibration reduction ballast bed

Abstract

The invention discloses a full-paving periodic cushion layer vibration reduction ballast bed which comprises a periodic composite ballast bed plate and a concrete base arranged below the periodic composite ballast bed plate, the periodic composite ballast bed plate and the concrete base are limited through a limiting structure, and relative displacement is prevented. The periodic composite ballast bed plate is formed by alternately arranging and solidifying concrete slabs and periodic cushion layers from top to bottom, and projections of the concrete slabs and the periodic cushion layers in the vertical direction are completely coincided to form a one-dimensional scattering type or local resonance type periodic structure in a cushion layer full-laying form; each concrete slab and the adjacent periodic cushion layer below the concrete slab form a basic unit, and the number of periodic repetitions of the basic units in the vertical direction is not smaller than 2. The vibration reduction ballast bed forms an elastic wave forbidden band in the vertical direction, vibration propagation in the vertical direction can be effectively controlled, the forbidden band range can be actively adjusted by changing the structural size and material composition, and adjustability is high.

Description

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AI Technical Summary

Benefits of technology

This patented technology reduces the stiffness and rigidity of a cycling seat cushion during operation without affecting its ability to absorb shock waves generated from external sources such as rails on highways. It achieves this through controlling both the flexibility and hardness of materials like polyurethane foam and urethan rubber layers. By cutting certain parts off these materials at specific locations along their length, it becomes possible for them to have different levels of softening/harden depending upon factors like temperature, moisture content, etc., resulting in effective reduction of resonant frequencies caused by tire impact noise. Additionally, the use of cycles instead of conventional structures allows for more flexible designs while maintaining good performance characteristics. Overall, this new technology improves safety and efficiency over existing systems.

Problems solved by technology

This patented technical problem addressed in this patents relates to reducing train impacts from rail movements due to excessively low supporting strength without causing issues such as wear and tearing off wheels and rails during operation. Additionally, it highlighted how passengers can experience discomfort while riding along railway tracks because they were forced against these surfaces for longer periods before being able to start moving again after having stopped their trains.

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