城市轨道交通噪声预测参数敏感性研究
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摘要
城市轨道交通噪声预测结果受多种因素的影响。通过研究分析噪声预测模型的组成架构,筛选出影响预测结果的主要参数。在此基础上采用正交试验法,以轨道交通沿线高层建筑夜间噪声贡献值作为研究对象,研究了水平距离、运行速度、通行能力、列车长度4个参数的敏感性,确定了噪声贡献值最大时对应的参数条件。针对运行速度、水平距离等参数,进一步分析了不同高度噪声贡献值的变化规律。随着楼层的增加,噪声贡献值逐步增大,并在某一层达到最大,然后逐渐减小。参数敏感性分析的成果及变化规律可以作为判断模型预测结果合理性的依据,同时为环保设计和噪声治理措施提供参考。
The noise prediction results of urban rail transit are affected by many factors. The main parameters of the noise prediction model were found by analyzing the main structure of the noise prediction model. On this basis,taking the contribution value of nocturnal noise of high-rise buildings along the traffic line as the research object,the sensitivity of 4 parameters,such as horizontal distance,running speed,train capacity and train length,was studied by orthogonal test. The parameter conditions corresponding to the maximum contribution value were found. According to the parameters such as running speed and horizontal distance,the variation rule of noise contribution at different heights was further analyzed. With the increase of the floor,the noise contribution value gradually increases and reaches the maximum value at a certain level. Then the noise contribution decreases gradually. The results and change rules of parameter sensitivity analysis can be used as the basis to judge the reasonableness of the prediction results of the model. At the same time,it can be used as a reference for environmental protection design and noise control measures.
The noise prediction results of urban rail transit are affected by many factors. The main parameters of the noise prediction model were found by analyzing the main structure of the noise prediction model. On this basis,taking the contribution value of nocturnal noise of high-rise buildings along the traffic line as the research object,the sensitivity of 4 parameters,such as horizontal distance,running speed,train capacity and train length,was studied by orthogonal test. The parameter conditions corresponding to the maximum contribution value were found. According to the parameters such as running speed and horizontal distance,the variation rule of noise contribution at different heights was further analyzed. With the increase of the floor,the noise contribution value gradually increases and reaches the maximum value at a certain level. Then the noise contribution decreases gradually. The results and change rules of parameter sensitivity analysis can be used as the basis to judge the reasonableness of the prediction results of the model. At the same time,it can be used as a reference for environmental protection design and noise control measures.
引文
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[2]韩健,肖新标,金学松,等.城市轨道交通车轮振动声辐射特性[J].机械工程学报,2012,48(10):115-121.
[3]辜小安,伍向阳,刘兰华.轨道交通动车组噪声源强取值研析[J].环境影响评价,2017,39(5):39-42,47.
[4]高飞,夏禾,安宁.北京地铁5号线高架结构的辐射噪声分析与实验研究[J].中国铁道科学,2010,31(5):134-139.
[5]刘兰华,伍向阳,辜小安,等.城市轨道交通噪声源强及减振措施效果的试验研究[J].城市轨道交通,2013,35(12):68-71,86.
[6]李洪鲁,冯裕钊,孙荣基,等.城市高架轨道交通噪声预测研究进展[J].噪声与振动控制,2015,35(6):7-12.
[7]蒋伟康,张海滨,严莉,等.高架轨道交通噪声的分析与控制技术研究[J].声学技术,2012,31(2):138-146.
[8]生态环境部.环境影响评价技术导则城市轨道交通:HJ 453—2018[S].北京:中国环境出版集团,2018:23-27.