A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Trackside sound barrier based on acoustic black holes
The invention discloses a trackside sound barrier based on the acoustic black holes. The trackside sound barrier comprises a top plate, a vertical plate, acoustic black hole structures and damping elements. Acoustic black hole structures are arranged on the inner surface of the vertical plate and composed of black hole areas and edge areas. Each black hole area is an area of which the inclinationis gradually reduced from the inner side to the outer side of the vertical plate; each edge area is a vertical area with the minimum thickness, wherein the black hole area is decreased progressively according to an exponential function, and the damping elements are fixed to the edge area. The acoustic black hole effect is utilized, the rail structure does not need to be weakened, the wheel rail noise can be effectively reduced, and the efficient energy absorption and noise reduction effects are achieved.
本发明公开了一种基于声学黑洞的轨旁声屏障，它包括顶板、竖板、声学黑洞结构和阻尼元件；所述竖板的内表面设置有声学黑洞结构，所述的声学黑洞结构由黑洞区域和边缘区域两部分组成；所述黑洞区域为从竖板内侧到外侧的倾斜度逐渐变小的区域；所述的边缘区域为黑洞区域以指数函数递减的最小厚度的垂直区域，所述的阻尼元件固定在边缘区域。本发明利用声学黑洞效应，无需对轨道结构进行削弱，便可以有效降低轮轨噪声，实现高效的能量吸收和降噪效果。
Trackside sound barrier based on acoustic black holes
The invention discloses a trackside sound barrier based on the acoustic black holes. The trackside sound barrier comprises a top plate, a vertical plate, acoustic black hole structures and damping elements. Acoustic black hole structures are arranged on the inner surface of the vertical plate and composed of black hole areas and edge areas. Each black hole area is an area of which the inclinationis gradually reduced from the inner side to the outer side of the vertical plate; each edge area is a vertical area with the minimum thickness, wherein the black hole area is decreased progressively according to an exponential function, and the damping elements are fixed to the edge area. The acoustic black hole effect is utilized, the rail structure does not need to be weakened, the wheel rail noise can be effectively reduced, and the efficient energy absorption and noise reduction effects are achieved.
本发明公开了一种基于声学黑洞的轨旁声屏障，它包括顶板、竖板、声学黑洞结构和阻尼元件；所述竖板的内表面设置有声学黑洞结构，所述的声学黑洞结构由黑洞区域和边缘区域两部分组成；所述黑洞区域为从竖板内侧到外侧的倾斜度逐渐变小的区域；所述的边缘区域为黑洞区域以指数函数递减的最小厚度的垂直区域，所述的阻尼元件固定在边缘区域。本发明利用声学黑洞效应，无需对轨道结构进行削弱，便可以有效降低轮轨噪声，实现高效的能量吸收和降噪效果。
Trackside sound barrier based on acoustic black holes
一种基于声学黑洞的轨旁声屏障
ZHOU YUNLAI (author) / LIU LINYA (author) / CUI WEITAO (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
| Online Contents | 2012
Trackside: IndyCar's Fresh Start
| Online Contents | 2012
Paris-Lyon railway trackside telephone cables
| Engineering Index Backfile | 1950
COMPETITION - Trackside: Josef Newgarden & Sergio Perez
| Online Contents | 2012