Under the same weather conditions, the sound pressure level difference at a specific location before and after the installation of Noise Barrier. When the sound waves emitted by the noise source meet the Noise Barrier, Noise Barrier will propagate along three paths: one reaches the sound reception through the top and both sides of Noise Barrier Click; the other one opens.
Reaching the receiving point through Noise Barrier, another reflection occurs on the Noise Barrier's wall. The insertion loss of Noise Barrier mainly depends on the distribution of sound energy along three paths. When the noise insulation of Noise Barrier is large enough, the insertion loss of Noise Barrier is mainly Determined by the attenuation value. For Ted sound, the attenuation value of the diffracted sound is in the noise film area of Noise Barrier. Its infinite length is Noise Barrier, which can obtain 5-24dB noise reduction effect. The practical application of Noise Barrier is mainly linear sound source. For a linear sound source, infinite noise barrier, the diffraction sound is attenuated.
Noise Barrier adopts in-situ connection or bolt connection between the plug-in soundproof enclosure and the bridge, subgrade soundproof enclosure and foundation. When using bolts, the following requirements should be met:
Noise Barrier is mainly used for sound insulation and noise reduction of highways, highways, elevated composite roads and other noise sources. Divided into pure noise barrier type noise barrier, and combined noise barrier combined sound absorption and sound insulation, the latter is a more effective method of sound insulation. Double nuts or lock washers are used at the bolt connection. The distance from the center of the bolt to the edge of the steel member: the nominal diameter of the bolt in the direction of internal force should not be less than 2.0 times, and the nominal diameter of the bolt in the vertical direction should not be less than 1.5 times.
Noise Barrier The distance between the center of the anchor bar and the edge of the concrete member, the bending bending of the anchor bar should not be less than 3 times, the bending should not be less than 45mm; the diameter of the anchor bar should not be less than 6 times in the shear direction, and the vertical shear direction should not be less than 70mm . The minimum edge of the anchor bolt should not be less than 0.8 times the anchoring depth. Metal Noise Barrier has a large amount of sound insulation: the average sound insulation should be no less than 35dB; the Noise Barrier can be considered within 60-80m of the railway, and Noise Barrier measures should not be adopted when it exceeds 60-80m.
HeBei Shengsen Metal Products Co., Ltd. is located in Shijiazhuang City, Hebei Province. We have convenient transportation and advantageous location, with quick access to Tianjin Port. We can supply all kinds of wire and wire mesh products
with fine quality. Our company mainly deals with the following products: our main products include Expanded Metal Mesh.Aluminium expanded metal mesh.Powder coated expanded wire mesh. Gabion Mesh . Gabion Box .Gabion Mattress.Gabion Wall Baskets.noise fence.Sound Barrier.
