Transactions of Nanjing University of Aeronautics & Astronautics
Mechanical and Acoustic Performance Test of New Designed Metal Noise Barrier Unit Plate with No-Riveted Connection
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Abstract:
The modern transportation system is increasingly developed during recent years. It is an effective solution to set the noise barriers to reduce the traffic noise pollution caused by different kinds of transportation systems. Many deficiencies on concrete noise barriers and metal noise barriers with rivet structure can be eliminated by a new kind of noise barrier with no-riveted structure. The mechanical performance examination and acoustic performance test are conducted on the new-designed noise barrier with no-riveted structure. The results indicate that the maximum stress is 1.74 MPa and the maximum deformation is 1.04 mm with load acting on the unit plate. The noise reduction coefficient of this kind of no-riveted noise barrier unit plate is 0.75 and its noise insulation is 40 dB, which were conform to or superior to the standard requirements. Therefore, this new designed noise barrier meets the field application requirements of mechanical and acoustic performance, which demonstrates the noise barriers can be widely promoted.
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Clc Number:
U213.8
CHINA AERO-SCIENCES
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