Railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier

Abstract

The invention discloses a railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier. The railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier comprises a railway foundation cross beam and rib columns and a sound barrier body which are arranged on the railway foundation cross beam; the lower ends of the rib columns, the upper surface of the foundation cross beam and prefabricated blocking pieces outside the lower ends of the rib columns are mutually connected through embedded bars or bolts, and cast-in-place concrete fully covers and fixes the embedded bars or the bolts; anchoring steel plates and the embedded bars are embedded in the upper surface of the foundation cross beam, the lower ends of the rib columns are fixedly connected with the anchoring steel plates through the bolts, and the prefabricated blocking pieces are provided with the embedded bars and are in concretion connection with the embedded bars in the upper surface of the foundation cross beam. The railway T-shaped beam integration super-high strength concrete-micro-porous ceramic compound sound barrier adopts a structure that prefabricated element pieces are fixedly connected with the cast-in-place concrete on the spot, the building reliability of the element pieces is improved, the quality is guaranteed and stabilized, the efficiency of cast-in-place construction is higher than the efficiency of an existing welding technology, the concrete fully covers metal connecting pieces after casting is completed, the metal connecting pieces can be prevented from rusting and loosing, maintenance-free is achieved, and the stress of each structural piece is more reasonable.

Description

technical field [0001] The invention belongs to the technical field of railway operation noise control, in particular to the high-speed railway noise control technology, in particular to a sound-absorbing sound barrier applied to both sides of a railway road. Background technique [0002] The sound barrier is a facility inserted between the sound source and the receiver, so that the sound wave propagation has a significant additional attenuation, thereby reducing the impact of noise in a certain area where the receiver is located. [0003] Existing sound barriers usually use embedded parts combined with on-site fasteners to complete the construction, that is, the U-bolts embedded in the foundation concrete are mechanically connected to the H-shaped steel columns of the sound barrier, and there are a large number of sound barrier components , and a large number of steel and bolted joints are used, which are easy to loosen and rust during operation. Secondary noise and environ...

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Problems solved by technology

[0003] Existing sound barriers usually use embedded parts combined with on-site fasteners to complete the construction, that is, the U-bolts embedded in the foundation concrete are mechanically connected to the H-shaped steel columns of the sound barrier, and there are a large number of sound barrier components , and a large number of steel and bolted joints are used, which are easy to loosen and rust during operation. Secondary noise and environmental pollution are easily generated after the components are loosened, and a large amount of engineering maintenance workload will be brought during the operation process.

At the same time, mineral wool fiber is used as sound-absorbing material, which is easily scattered under the influence of the external environment during operation, and it is easy to cause environmental pollution after loosening

[0004] The structure of the existing sound barrier is complicated, and it is mostly composed of ordinary concrete or metal plate, mineral sound-absorbing cotton and other connecting parts. Its sound absorption and insulation effect, service life and reduction of operation and maintenance need to be improved, and it cannot better meet a wider range of needs. Railway sound absorption and noise reduction needs

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