结构 structure 室外的声屏障一般采用砖或混凝土结构， 室内的声屏障引用 钢板、 木板、,PMMA/POLYCARBONATE SHEET塑料扳、 石膏板和泡沫铝等结构。声屏障主要由钢结构立柱和吸隔声屏板两部分组成，立柱是声屏障的主要受力构件，它通过螺栓或焊接固定在道路防撞墙或轨道边的预埋钢板上；吸隔声板是主要的隔声吸声构件，它通过高强弹簧卡子将其固定在H型立柱槽内，形成声屏障。声屏障的设计已较为充分地考虑了高架高速道路、城市 轻轨、 地铁的风载、交通车辆的撞击安全和全天候的露天防腐问题。它外形美观大方，制作精致，运输、安装方便，造价低，使用寿命长，特别适用于高架高速道路和城市轻轨、地铁的防噪声使用，是现代化城市最理想的隔声降噪设施。 Outdoor acoustic barriers are usually made of bricks or concrete structures, and indoor acoustic barriers are used to reference steel plates, boards, PMMA/POLYCARBONATE SHEET plastic plates, gypsum boards and foam aluminum structures. Noise barrier is mainly composed of steel columns and acoustic screen plate in two parts, absorption column is the main stress components of noise barrier, it is fixed by bolts or welding at the edge of the road against a wall or rail on the embedded steel plate; The sound absorber is the main acoustic absorbing component, which is fixed in the h-type column groove through the high-strength spring card, forming a sound barrier. The design of acoustic barrier has taken into consideration the high speed road, urban light rail, the wind load of the subway, the impact of traffic vehicles and the weathering of the weather. Production of refined its appearance is beautiful and easy, convenient transportation and installation, low cost, long service life, especially suitable for elevated expressways and urban light rail, subway anti noise use, is a modern city the ideal sound insulation noise reduction facilities. 声屏障高度在1m一5m间，覆盖有效区域平均降噪达10～15 dB(A)(125 Hz～40000Hz，1/3倍频程)，最高达20dB(A)。一般来讲，声屏障越高，或离声屏障越远，降噪效果就越好。 The sound barrier height is at 1m, 5m, covering an effective area of 10 ~ 15 dB (A) (125 Hz ~ 40000Hz, 1/3 octave) and up to 20dB (A). Generally speaking, the higher the sound barrier or the farther from the sound barrier, the better the noise reduction will be.