声屏障，主要用于公路、高速公路、高架复合道路和其它噪声源的隔声降噪。分为纯隔声的反射型声屏障，和吸声与隔声相结合的复合型声屏障，后者是更为有效的隔声方法。指的是为减轻行车噪声对附近居民的影响而设置在铁路和公路侧旁的墙式构造物。隔音墙也称为声屏障。在声源和接收者之间插入一个设施，使声波传播有一个显著的附加衰减，从而减弱接收者所在的一定区域内的噪声影响，这样的设施就称为声屏障。分为交通隔音屏障、设备噪音衰减隔音屏障、工业厂界隔音屏障、公路和高速公路上是使用各类型声屏障最多的地方。

The noise barrier is mainly used for noise reduction and noise reduction of highways, highways, elevated composite roads and other noise sources. It can be divided into pure sound barrier, reflecting barrier and sound barrier combined with sound absorption and sound insulation. The latter is a more effective way of sound insulation. It refers to the wall structure built on the side of railway and highway to mitigate the impact of traffic noise on nearby residents. A sound barrier is also called a sound barrier. A facility is inserted between the sound source and the receiver so that the sound wave is propagating with a significant additional attenuation, thereby reducing the noise effect in a certain area where the recipient is located, and such a facility is called a sound barrier. It is divided into traffic barrier barrier, equipment noise attenuation barrier, industrial factory boundary sound barrier, highway and expressway, which use the most types of sound barriers.

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。

The outdoor sound barrier usually uses brick or concrete structure, and the indoor sound barrier refers to steel plate, wood board, PMMA/POLYCARBONATE SHEET plastic wrench, plasterboard and foam aluminum. The sound barrier is mainly composed of two parts of the steel structure column and the suction screen plate. The vertical column is the main force component of the sound barrier. It is fixed on the buried steel plate of the road against the wall or the track by the bolt or welding. The sound absorbing plate is the main sound insulation component. It is fixed in the H column trough through the high-strength spring spring card. A sound barrier is formed. The design of sound barrier has fully taken into account the high and high speed road, the urban light rail, the subway's wind load, the collision safety of the traffic vehicles and the all-weather antisepsis. It has beautiful appearance, exquisite production, convenient transportation, easy installation, low cost and long service life. It is especially suitable for the anti noise use of high speed road and urban light rail and subway. It is the most ideal sound insulation and noise reduction facility in modern cities.

声屏障高度在1m一5m间，覆盖有效区域平均降噪达10～15dB(A)(125Hz～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 between 1m 5m, covering the effective area. The average noise reduction reaches 10 ~ 15dB (A) (125Hz ~ 40000Hz, 1/3 octave), the highest reaches 20dB (A). Generally speaking, the higher the noise barrier is, or the farther away from the sound barrier, the better the noise reduction effect is.

主要分类

Main classification

声屏障按材质分类又可以分为以下几类：金属声屏障（金属百叶、金属筛网孔）、混凝土声屏障（轻质混凝土、高强混凝土）、PC声屏障、玻璃钢声屏障等。最宽2.7米宽pc钢化有机玻璃板已在无锡正式生产，声屏障厂安装成功，大大改善视觉和降噪效果

According to the material classification, sound barrier can be divided into the following categories: metal sound barrier (metal shutter, metal screen mesh hole), concrete sound barrier (lightweight concrete, high strength concrete), PC sound barrier, FRP sound barrier and so on. The widest 2.7 meters wide PC tempered plexiglass has been officially produced in Wuxi, the sound barrier factory is successfully installed, greatly improving the visual and noise reduction effect.

按不同的用途又可以分为这样几类：铁路声屏障{[1]、公路声屏障[2]、城市景观声屏障、居民区降噪声屏障[3]等。

According to different uses, it can be divided into several categories: railway noise barrier {[1], highway noise barrier [2], urban landscape noise barrier, residential area noise reduction barrier [3] and so on.