Design method of cement-based sound absorption metal sound barrier unit plate
The invention provides a design method of a cement-based sound absorption metal sound barrier unit plate, the cement-based sound absorption metal sound barrier unit plate comprises a porous sound absorption layer, a perforated sound insulation layer and a rear air layer which are arranged along a so...
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| creator | HAN GUIBO CHANG LIANG SU WEIQING ZHENG BOWEN GAO CHAO PAN XIAOYAN HAN JIAQI SHEN ZHIJUN HU WENLIN ZHAO YU |
| description | The invention provides a design method of a cement-based sound absorption metal sound barrier unit plate, the cement-based sound absorption metal sound barrier unit plate comprises a porous sound absorption layer, a perforated sound insulation layer and a rear air layer which are arranged along a sound source propagation direction, and the perforated sound insulation layer comprises the following design steps: S1, presetting a perforated radius r of the perforated sound insulation layer; s2, under the preset perforation radius r, the perforation rate under the concerned sound absorption frequency range is determined; s3, the weighted sound reduction index Rc under the perforation rate is determined; and S4, judging according to a judgment condition that Rc is greater than or equal to a design standard limit value. According to the invention, joint optimization of sound absorption and sound insulation performance of structural design of the cement-based sound absorption material can be realized.
本发明提供了一种水泥基吸声金 |
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本发明提供了一种水泥基吸声金</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE BUILDING CALCULATING CEILINGS COMPUTING CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES COUNTING ELECTRIC DIGITAL DATA PROCESSING FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS INSULATION OR OTHER PROTECTION OF BUILDINGS PHYSICS ROOFS WALLS, e.g. PARTITIONS |
| title | Design method of cement-based sound absorption metal sound barrier unit plate |
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