列车对隔音屏障的动态冲击试验

IF 0.5 Q4 CONSTRUCTION & BUILDING TECHNOLOGY

Roads and Bridges-Drogi i Mosty Pub Date : 2020-12-30 DOI:10.7409/RABDIM.020.016

P. Olaszek, A. Sakowski, Ewa Twardosz, Paweł Nurek

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引用次数: 2

摘要

本文对过路列车对噪声屏障的动力影响进行了研究。效果是沿着两条铁路线进行的调查:在第一个路段，障碍物位于距离轨道轴线不到3.8米的地方，观察到相当大的障碍;在第二段，相同类型的障碍物位于距轨道轴线4.6 m处，没有注意到遇险。提出了一种基于振动加速度测量和二重积分计算的气动载荷下位移的确定方法。所得结果与干涉雷达的测量结果进行了比较。提出了分析和评估过路列车动力冲击强度的参数。对两段铁路线路的分析结果进行了比较。本文还介绍了一种完好无损的隔声板的实验室测试。结论是关于噪声屏障的使用容易疲劳，由于交替的正、负气动压力峰值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tests of dynamic impact from trains on noise barriers

The article presents an investigation on the dynamic impact from passing trains on noise barriers. The effect was an investigation along two railway line sections: on the first section the barriers were located less than 3.8 m from the track axis and considerable distress of the barriers was observed; on the second section barriers of the same type were located 4.6 m from the track axis and no distress was noted. A method for determination of displacement occurring under aerodynamic loading is presented, based on measurement of vibration acceleration and calculation of double integral. The obtained results are compared with measurements from an interferometric radar. Parameters for analysis and assessment of the magnitude of dynamic impact from passing trains are proposed. The results of the analyses performed on the two railway line sections are compared. The article also presents laboratory tests of an undamaged noise barrier panel. Conclusions are formulated regarding the use of noise barriers susceptible to fatigue due to alternating positive and negative aerodynamic pressure peaks.

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来源期刊

Roads and Bridges-Drogi i Mosty CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

1.20

自引率

0.00%

发文量

期刊介绍： The quarterly journal Roads and Bridges – Drogi i Mosty is published by the Road and Bridge Research Institute since September 2012 as a bilingual English-Polish journal. From 2002 to 2012 the journal was printed under the title Drogi i Mosty. The journal mission is to promote current achievements in science and technology in the field of road and bridge engineering. The journal is intended as a forum of the exchange of innovative concepts and solutions between the researches from different countries. Original scientific and technical papers in the field of civil engineering and related engineering sciences are published. The scope of Roads and Bridges – Drogi i Mosty includes design, construction, maintenance and safe use of roads, bridges, airports and other transportation structures.