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城市景观廊道节点中的声景观差异研究
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摘要
城市景观廊道已经成为居民重要的交往和休闲空间。目前对于城市景观廊道的研究主要集中于空间体验和植物布置等层面,关于声环境的研究较少。本文以声景观(soundscape)为研究视角,在一个城市景观廊道中选取了居民休闲广场、公共活动广场、历史文化广场、商业步行街和公共绿地等五个典型景观节点作为调查对象,通过声环境测量、声景漫步和问卷调查,分析了这些景观节点内环境声级、声源感知和声舒适度的差异。结果表明,在声级方面,同一时间内商业步行街和居民休闲广场的声级差可达23.1dB。在声源感知方面,居民休闲广场内以交谈声和脚步声为主,而历史文化广场内的则主要为鸟鸣与流水声。在声音主观评价方面,同一时间内,历史文化广场声舒适度为3.8,而商业步行街声舒适度仅为2.2;综上所述,居民对城市景观廊道节点的声环境需求是不同的,因此需要居民的声喜好进行有针对性的声环境设计。这些结果可为规划师和景观设计师开展城市景观廊道的环境改善提供依据。
Nowadays,urban landscape corridors are referred to as important communication and leisure spaces.Present study of urban landscape corridor is mainly concentrated on spatial design or the plant configuration.However,the research about soundscape has not been concerned.In this case,based on a typical city landscape corridor,the soundscape of five landscape nodes- such as the leisure square for residents,public square,history and culture square,commercial pedestrian street and public green space,have been investigated.The differences between sound sources,environmental noise level and acoustic comfort perception are analyzed through sound environment measurement,sound walks and questionnaire survey.The result shows that,in terms of sound level,the sound level in leisure square for residents is 23.1 dB lower than commercial pedestrian street.In terms of sound sources,the main sound sources,which the interviewers heard,are mainly surrounding speech and footsteps of the leisure square for residents,and the historical and cultural square mainly the singing of birds and the sound of water.In terms of acoustic comfort,at the same point of time,the acoustic comfort of the historical cultural square is 3.8,while only it is only2.2 in the commercial pedestrian street;To sum up,the evaluation of sound environment for various urban landscape corridor nodes is different in various urban landscape corridor nodes.Therefore,the it is necessary to design for acoustic the sound environment according to acoustic preferences is necessary in different urban area.The result of the research can be applied in urban planning and landscape designing to provide better acoustic environment.
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