Research On Acouistic Characteristics And Noise Reduction Of Urban Road Traffic Noise Of Sound Barrier

With the progress of urbanization and growing urban roads, traffic noise problems get more and more attentions, sound barrier as an economical and practical way to reduce noise is accepted by the majority of people. Therefore, research on the acoustic characteristics and noise reduction of urban roads of the sound barrier is necessary.The following aspects are included in this paper:First, according to the basic principles of the theory of acoustics and acoustic noise barrier (reflection, transmission, diffraction), analyze the two ways of noise reduction and its noise characteristics, such as main types, materials, structure, application and impact factor.Secondly, according to the acoustic sound barrier design and measurement specification, acoustic design of sound barrier (including sound barrier design target value, location, height, length, thickness, material and shape), structural design (including wind load design, strength design and safety design) and a method of landscape design and procedure are introduced.Thirdly, a kind of sound barrier for Harbin is designed. And then the modal, transmissoion loss and insertion loss of barriers are analyzed by using LMS Virtual.Lab Acoustics.There is practical significance in this subject, and it can provide a theoretical basis for the study of the sound barrier in the future.