摘要
【目的】为了研究北方寒区饱和冻土场地在高铁激励下的振动衰减问题。【方法】本研究采用现场观测法对大庆市冬季饱和冻土场地进行现场观测试验。【结果】对饱和冻土场地的地表振动加速度数据进行时程分析、功率谱分析、振动级衰减分析。【结论】得到高铁荷载下饱和冻土场地的加速度时程和加速度振动级衰减的主要频率范围和距离范围,并总结出饱和冻土场地的振动衰减特性。
[Purposes]In order to study the vibration attenuation of saturated frozen soil in the northern cold region under the excitation of high-speed railway.[Methods]The field observation test was carried out on the saturated frozen soil in Daqing City in winter by field observation method.[Findings]The time history analysis,power spectrum analysis and vibration level attenuation analysis of the ground surface vibration acceleration data of saturated frozen soil are carried out.[Conclusions]The time history of acceleration and the main frequency range and distance range of acceleration vibration level attenuation of saturated permafrost site under the excitation of high-speed railway are obtained,and the vibration attenuation characteristics of saturated permafrost site are summarized.
作者
申译文
郑鑫
解恒燕
SHEN Yiwen;ZHENG Xin;XIE Hengyan(College of Civil Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Daqing 163319,China)
出处
《河南科技》
2023年第2期40-44,共5页
Henan Science and Technology
基金
黑龙江省自然科学基金联合引导项目(LH2019E072)。
关键词
高铁激励
饱和冻土
振动衰减
high-speed railway excitation
saturated frozen soils
vibration attenuation
