基于视觉信息的高速铁路声屏障景观量化分析探讨

高速铁路声屏障是减少运营噪声的有效措施,但声屏障的设置会产生“廊道效应”,对乘客产生视觉和心理上的负面影响。本文将高速列车乘客在旅途中的视觉信息作为分析目标,将声屏障的景观特性细化为空间特性和视觉特性,并系统阐述空间特性和视觉特性的具体评判和量化方法。借助数字摄影和图像处理技术,对已建高速铁路不同声屏障的景观指标数据进行计算,并以此构建高速铁路声屏障景观层次灰色分析模型,实现对不同声屏障景观特性的量化评判。在此基础上,给出高速铁路声屏障景观选型的方法和建议。

Quantitative Evaluation of High-speed Railway Noise Barrier Landscape Based on Visual Information

While construction of high-speed railway noise barrier is an effective measure to reduce the impacts of railway noise,the noise barriers can also cause corridor effect,resulting in negative impacts on passengers’visual and psychological well-being.Based on the analysis of the visual information of passengers on the high-speed train,this paper classified the landscape characteristics of noise barriers into visual and spatial features and systematically elaborated the specific evaluation and quantification methods of visual and spatial identities of noise barriers.With the help of digital photography and image processing technology,this paper conducted calculation of landscape index values of different noise barriers along the existing high-speed railways and established a hierarchical grey analytical model of noise barrier landscape to realize the quantitative evaluation of different high-speed railway noise barrier landscape characteristics.On this basis,corresponding methods and suggestions were given for the selection and application of high-speed railway noise barrier landscape.