| 成渝高速铁路地面三向振动总值特性分析 |
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| 引用本文： | 贺玉龙,张群,彭也也,宋喆.成渝高速铁路地面三向振动总值特性分析[J].工业安全与环保,2020(4):1-3,16. |
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| 作者姓名： | 贺玉龙 张群 彭也也 宋喆 |
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| 作者单位： | 西南交通大学地球科学与环境工程学院 |
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| 基金项目： | 国家自然科学基金(51478397);四川省科技计划项目(2018JY0328)。 |
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| 摘 要： | 为研究高速铁路地面三向振动总值特性,选择成渝高速铁路某路堤段和桥梁段进行了现场地面三向振动测试,分析了振动总值随距离的变化特性。结果表明,路堤段和高架桥段计权和未计权振动总值均随距离增加而近似呈负指数衰减,近场衰减快,远场衰减缓慢;路堤段和高架桥段计权振动总值与Z振级随距离的变化规律类似,且近场两者之间的差值较小,当评价高速铁路运营振动的环境影响时,近场可用Z振级近似代替计权振动总值。
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| 关 键 词： | 高速铁路 路堤 高架桥 三向振动 振动总值 |
Measurements and Analysis of the Tri-directional Vibration Total Value of Chengdu-Chongqing High-speed Railway |
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| HE Yulong,ZHANG Qun,PENG Yeye,SONG.Measurements and Analysis of the Tri-directional Vibration Total Value of Chengdu-Chongqing High-speed Railway[J].Industrial Safety and Dust Control,2020(4):1-3,16. |
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| Authors: | HE Yulong ZHANG Qun PENG Yeye SONG |
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| Institution: | (Faculty of Geoscience and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031) |
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| Abstract: | A felid tri-directional vibration test was conducted at an embankment and viaduct section in Chengdu-Chongqing high-speed railway to study the vibration total value characteristics as a function of distance.The weighted and unweighted vibration total value at the embankment attenuated negatively and exponentially with the increase of distance;and a greater decreasing rate was observed for sampling locations near the embankment section compared to those located farther.A similar trend was found for the vibration total value collected at the viaduct section.No significant difference was found between the weighted vibration total value and Z vibration value near the embankment and viaduct sections.This study revealed that the weighted vibration total value can be replaced by Z vibration value to evaluate environmental impact of vibration induced by high-speed railway in near field. |
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| Keywords: | high-speed railway embankment viaduct tri-directional vibration vibration total value |
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