1, glass steel barrier is mainly composed of steel structure column and suction Shengbing insulation board is composed of two parts, the column is the main stress components of sound barrier, it is welded and fixed on the road or rail crash wall edge embedded steel plate through bolts; sound absorption board is the main component of sound insulation and absorption, it is formed by high strength spring clip the H column is fixed on the groove, the formation of sound barrier.
2, the design of FRP sound barrier has fully considered the elevated highway, urban light rail, subway wind load, collision safety of traffic vehicles and all-weather outdoor anti-corrosion. It has beautiful appearance, exquisite production, transportation, convenient installation, low cost, long service life, anti noise especially suitable for overhead high speed road and city rail, subway, sound insulation and noise reduction is the most ideal modern city facilities.
3. The height of FRP barrier is between 1m and 5m, covering the effective area. The average noise reduction is 10 to 15dB (A) (125Hz to 40000Hz, 1/3 octave), and the maximum is 20dB (A). Generally speaking, the higher the sound barrier, or the farther away from the sound barrier, the better the noise reduction effect. In general, the sound barrier reduces l0 - 15dB by high frequency sound. Sound barrier height can be designed according to the distance between the source and the receiving point, barrier height is doubled, the noise reduction can increase the amount of 6dB, in order to make the barrier noise reduction effect is good, should try to make the barrier near the sound source or receiver.
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