地面隔声墙高度对轨道交通高架结构噪声影响研究
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摘要
以轨道交通32 m双线混凝土简支箱梁为研究对象,采用现场实测及有限元、声学边界元联合仿真的方法,分析列车运行条件下桥梁低频结构辐射噪声的声场分布,在此基础上,考虑在桥梁附近设立不同高度的地面隔声墙,分析隔声墙高度对桥梁结构噪声的影响。研究结果表明:桥梁振动辐射的噪声主要集中在底板附近,以小于250 Hz的低频噪声为主,全局峰值出现在50～63 Hz频率段;在一些较为复杂的现场工况,例如居民楼距高架桥的距离较近,在居民楼和桥梁之间设立的隔声墙,可以在一定程度上降低桥梁结构噪声对居民生活的影响;位于桥梁附近的隔声墙对于墙后的场点有一定的降噪效果,降噪效果与隔声墙高度呈非线性关系,在考虑经济效益和美观的情况下,可以设立2.3 m左右的隔声墙。
Based on the method of field measurement, structural finite element method and acoustic boundary element simulation, the sound pressure distribution of noise radiated by 32 m double-span concrete box bridge structure vibration was analyzed under the train operating condition. On this basis, considering the establishment of different height insulation wall on the ground near the bridge, the impact of sound insulation wall height on the bridge structure noise was analyzed. The results show that the radiation noise of bridge vibration is mainly concentrated in the vicinity of the bottom plate, the web and the wing, with the noise near the bottom being most significant. The structural noise is dominated by low frequency, with less than 250 Hz frequency noise as the main component and the peak of 50～63 Hz. In some more complicated conditions, such as the closer distance between the residential building and the viaduct, sound insulation walls between residential buildings and bridges can reduce the impact of bridge structural noise on the residents' life. The sound insulation wall has a certain noise reduction effect on the field point after the wall, but the noise reduction effect is not linearly related to the height of the insulation wall. Considering the economic benefits and beautiful circumstances, sound insulation wall with the height of 2.3 m is suitable.
Based on the method of field measurement, structural finite element method and acoustic boundary element simulation, the sound pressure distribution of noise radiated by 32 m double-span concrete box bridge structure vibration was analyzed under the train operating condition. On this basis, considering the establishment of different height insulation wall on the ground near the bridge, the impact of sound insulation wall height on the bridge structure noise was analyzed. The results show that the radiation noise of bridge vibration is mainly concentrated in the vicinity of the bottom plate, the web and the wing, with the noise near the bottom being most significant. The structural noise is dominated by low frequency, with less than 250 Hz frequency noise as the main component and the peak of 50～63 Hz. In some more complicated conditions, such as the closer distance between the residential building and the viaduct, sound insulation walls between residential buildings and bridges can reduce the impact of bridge structural noise on the residents' life. The sound insulation wall has a certain noise reduction effect on the field point after the wall, but the noise reduction effect is not linearly related to the height of the insulation wall. Considering the economic benefits and beautiful circumstances, sound insulation wall with the height of 2.3 m is suitable.
引文
[1]相增辉,王双闪,兰桂柳,等.声屏障的发展历程及其发展趋势[J].声学技术,2016,35(1):58-62.XIANG Zenghui,WANG Shuangshan,LAN Guiliu,et al.Development history and development trend of sound barrier[J].Acoustic Technology,2016,35(1):58-62.
[2]雷晓燕,圣小珍.铁路交通噪声与振动[M].北京:科学出版社,2004.LEI Xiaoyan,SHENG Xiaozhen.Railway traffic noise and vibration[M].Beijing:Science Press,2004.
[3]ZHANG X,LI X Z,LIU Q M,et al.Theoretical and experimental investigation on bridge-borne noise under moving high-speed train[J].Sci ChinaSer E,2013,56(4):917-924.
[4]LI Xiaozhen,ZHANG Xun,ZHANG Zhijun,et al.Experimental research on concrete bridge-borne noise induced by intercity express train[J].Proceeding of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit,2015,229(2):125-135.
[5]吴小萍,费广海,廖晨彦.高速铁路不同高度声屏障的降噪效果分析[J].中国铁道科学,2015,36(3):127-132.WU Xiaoping,FEI Guanghai,LIAO Chenyan.Analysis of noise reduction effect of sound barrier at different heights of high-speed railway[J].China Railway Science,2015,36(3):127-132.
[6]费广海,吴小萍,廖晨彦.声屏障高度对高铁(客运专线)降噪效果的影响[J].中国环境科学,2015,35(8):2539-2545.FEI Guanghai,WU Xiaoping,LIAO Chenyan.Effects of sound barrier height on noise reduction effect of highspeed railway(Passenger dedicated line)[J].Chinese Environmental Science,2015,35(8):2539-2545.
[7]DIN 45680-1997,Measurement and assessment of lowfrequency noise missions in the neighborhood-guidelines for the assessment for industrial plants[S].
[8]李小珍,张迅.铁路32 m混凝土简支箱梁结构噪声试验研究[J].中国铁道科学,2013,34(3):20-26.LI Xiaozhen,ZHANG Xun.Research on structure noise test of 32 m concrete simply supported box beam in railway[J].China Railway Science,2013,34(3):20-26.
[9]李小珍,尹航.成灌快铁高架桥梁区段噪声测试[J].噪声与振动控制,2013,33(2):183-187.LI Xiaozhen,YIN Hang.Test of the noisy section of irrigation railway viaduct[J].Noise and Vibration Control,2013,33(2):183-187.
[10]高飞.城市轨道交通高架结构振动与噪声影响的研究[D].北京:北京交通大学,2011.GAO Fei.Study on the influence of urban rail transit elevated structure vibration and noise[D].Beijing:Beijing Jiaotong University,2011.
[2]雷晓燕,圣小珍.铁路交通噪声与振动[M].北京:科学出版社,2004.LEI Xiaoyan,SHENG Xiaozhen.Railway traffic noise and vibration[M].Beijing:Science Press,2004.
[3]ZHANG X,LI X Z,LIU Q M,et al.Theoretical and experimental investigation on bridge-borne noise under moving high-speed train[J].Sci ChinaSer E,2013,56(4):917-924.
[4]LI Xiaozhen,ZHANG Xun,ZHANG Zhijun,et al.Experimental research on concrete bridge-borne noise induced by intercity express train[J].Proceeding of the Institution of Mechanical Engineers,Part F:Journal of Rail and Rapid Transit,2015,229(2):125-135.
[5]吴小萍,费广海,廖晨彦.高速铁路不同高度声屏障的降噪效果分析[J].中国铁道科学,2015,36(3):127-132.WU Xiaoping,FEI Guanghai,LIAO Chenyan.Analysis of noise reduction effect of sound barrier at different heights of high-speed railway[J].China Railway Science,2015,36(3):127-132.
[6]费广海,吴小萍,廖晨彦.声屏障高度对高铁(客运专线)降噪效果的影响[J].中国环境科学,2015,35(8):2539-2545.FEI Guanghai,WU Xiaoping,LIAO Chenyan.Effects of sound barrier height on noise reduction effect of highspeed railway(Passenger dedicated line)[J].Chinese Environmental Science,2015,35(8):2539-2545.
[7]DIN 45680-1997,Measurement and assessment of lowfrequency noise missions in the neighborhood-guidelines for the assessment for industrial plants[S].
[8]李小珍,张迅.铁路32 m混凝土简支箱梁结构噪声试验研究[J].中国铁道科学,2013,34(3):20-26.LI Xiaozhen,ZHANG Xun.Research on structure noise test of 32 m concrete simply supported box beam in railway[J].China Railway Science,2013,34(3):20-26.
[9]李小珍,尹航.成灌快铁高架桥梁区段噪声测试[J].噪声与振动控制,2013,33(2):183-187.LI Xiaozhen,YIN Hang.Test of the noisy section of irrigation railway viaduct[J].Noise and Vibration Control,2013,33(2):183-187.
[10]高飞.城市轨道交通高架结构振动与噪声影响的研究[D].北京:北京交通大学,2011.GAO Fei.Study on the influence of urban rail transit elevated structure vibration and noise[D].Beijing:Beijing Jiaotong University,2011.