Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Near-rail sound barrier
The invention provides a near-rail sound barrier. The near-rail sound barrier comprises a base and a plurality of first acoustic modules installed on the base. Each first acoustic module comprises a first perforated plate and a sound absorption structure which are connected in a stacked mode; a plurality of resonant cavities with different depths are formed in the sound absorption structure, and all the resonant cavities face the first perforated plate. According to the invention, the Helmholtz resonance sound absorption principle is utilized, the combination of a plurality of resonant cavities with different depths is adopted, the low and medium frequency broadband sound absorption is effectively realized, and particularly, the symmetrical L-shaped resonant cavity structure is adopted, sothat the requirement of the structure on the space is obviously reduced, and the structure is more compact; meanwhile, the hole diameter of the first penetrating plate and the depth of the resonant cavity can be flexibly designed and adjusted according to the performance requirements of different scenes; and the barrier can match a traditional sound absorption material for use, so that the soundabsorption requirements of high, medium and low frequencies are met, and the optimal application effect is achieved.
本发明提供一种近轨声屏障，包括基座以及多个安装在所述基座上的第一声学模块；所述第一声学模块包括层叠连接的第一穿孔板和吸声结构,所述吸声结构内设有多个不同深度的共振腔,且各所述共振腔朝向所述第一穿孔板设置。该发明利用赫姆霍兹共振吸声原理，采用多个不同深度的共振腔组合，有效实现了中低频的宽频吸声，特别是采用对称的L型共振腔结构，明显降低了结构对空间的需求，使得结构更紧凑。同时可根据不同场景的性能要求，可灵活设计调节第一穿板的孔直径以及共振腔的深度，以及可与传统的吸声材料配合使用，以同时满足高中低频的吸声需求，达到最佳的适用效果。
Near-rail sound barrier
The invention provides a near-rail sound barrier. The near-rail sound barrier comprises a base and a plurality of first acoustic modules installed on the base. Each first acoustic module comprises a first perforated plate and a sound absorption structure which are connected in a stacked mode; a plurality of resonant cavities with different depths are formed in the sound absorption structure, and all the resonant cavities face the first perforated plate. According to the invention, the Helmholtz resonance sound absorption principle is utilized, the combination of a plurality of resonant cavities with different depths is adopted, the low and medium frequency broadband sound absorption is effectively realized, and particularly, the symmetrical L-shaped resonant cavity structure is adopted, sothat the requirement of the structure on the space is obviously reduced, and the structure is more compact; meanwhile, the hole diameter of the first penetrating plate and the depth of the resonant cavity can be flexibly designed and adjusted according to the performance requirements of different scenes; and the barrier can match a traditional sound absorption material for use, so that the soundabsorption requirements of high, medium and low frequencies are met, and the optimal application effect is achieved.
本发明提供一种近轨声屏障，包括基座以及多个安装在所述基座上的第一声学模块；所述第一声学模块包括层叠连接的第一穿孔板和吸声结构,所述吸声结构内设有多个不同深度的共振腔,且各所述共振腔朝向所述第一穿孔板设置。该发明利用赫姆霍兹共振吸声原理，采用多个不同深度的共振腔组合，有效实现了中低频的宽频吸声，特别是采用对称的L型共振腔结构，明显降低了结构对空间的需求，使得结构更紧凑。同时可根据不同场景的性能要求，可灵活设计调节第一穿板的孔直径以及共振腔的深度，以及可与传统的吸声材料配合使用，以同时满足高中低频的吸声需求，达到最佳的适用效果。
Near-rail sound barrier
近轨声屏障
WU SHENGTI (Autor:in) / LI LIN (Autor:in) / LI DENGKE (Autor:in) / HUANG ZHIHUA (Autor:in) / ZHANG JINGFU (Autor:in) / WANG DA (Autor:in)
29.09.2020
Patent
Elektronische Ressource
Chinesisch
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.
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