交通荷载作用下路面结构的微地震试验
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摘要
首次运用微地震监测系统对交通荷载作用下的路面微振动响应进行了研究与探索。通过微地震监测系统采集荷载作用下试验路段路面的波形数据,并对试验数据进行波形分析,研究路面结构中振动加速度和振动位移的衰减规律,分析不同荷载对路面结构振动响应的影响,探讨微地震监测系统在路面结构损伤评价中的应用。结果表明:微地震监测系统能够对路面结构的振动响应进行监测分析,为进一步研究路面振动响应提供了有价值的参考。
Authors studied the problems of microseismic dynamic response of pavement under traffic load by means of the microseismic monitoring technology for the first time.Through the microseismic monitoring system,wave data under loads acted on the pavement were collected on the test road.Then,the waveform of testing data was analyzed.According to the result,the weakened rules of vibration acceleration and displacement were studied.The influences of different loads on vibration response of the pavement structure were analyzed.Moreover,the application of microseismic monitoring system in damnification appraisement of pavement structure was discussed.Results show that microseismic monitoring system can be used to analyze dynamic response.It provides valuable reference for study of dynamic response of pavement.
Authors studied the problems of microseismic dynamic response of pavement under traffic load by means of the microseismic monitoring technology for the first time.Through the microseismic monitoring system,wave data under loads acted on the pavement were collected on the test road.Then,the waveform of testing data was analyzed.According to the result,the weakened rules of vibration acceleration and displacement were studied.The influences of different loads on vibration response of the pavement structure were analyzed.Moreover,the application of microseismic monitoring system in damnification appraisement of pavement structure was discussed.Results show that microseismic monitoring system can be used to analyze dynamic response.It provides valuable reference for study of dynamic response of pavement.
引文
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[2]张献民,宋长柏,刘秀菊.瞬态振动信号在公路工程检测中的应用[J].河北工业大学学报,2001,30(1):57-61.ZHANG Xian-min,SONG Chang-bai,LIU Xiu-ju.Applied the Transient Vibration Signal in HighwayEngineering Tested[J].Journal of Hebei Universityof Technology,2001,30(1):57-61.
[3]王祥琴.波速检测路基压实质量的理论与实践[J].铁道建筑,2003(5):25-27.WANG Xiang-qin.Theory and Practice for DetectingSubgrade Compactness by Wave Speed[J].RailwayEngineering,2003(5):25-27.
[4]颜可珍,夏唐代,姜爱华.交通荷载作用下地基中瑞利波的传播特性[J].岩土力学,2004,25(增):414-417.YAN Ke-zhen,XIA Tang-dai,JIANG Ai-hua.Charac-teristics of Rayleigh Wave in Soils Generated by Traf-fic Load[J].Rock and Soil Mechanics,2004,25(S):414-417.
[5]蓝金辉,李虹,周兆英.目标地震动信号的特征提取及识别研究[J].振动与冲击,2001,20(4):42-44.LAN Jin-hui,LI Hong,ZHOU Zhao-ying.Researchon Feature Extraction of Seismic Signal for VehicleTargets and Neural Networks Recognition[J].Journalof Vibration and Shock,2001,20(4):42-44.
[6]梁铁成,李桐林,董瑞春.公路车辆产生振动波的衰减研究[J].吉林大学学报:地球科学版,2003,33(3):382-386.LIANG Tie-cheng,LI Tong-lin,DONG Rui-chun.AStudy on Attenuation of Vehicle Caused Vibration[J].Journal of Jilin University:Earth Science Edi-tion,2003,33(3):382-386.
[7]徐毅.交通荷载对高速公路路基影响的试验研究[D].南京:河海大学,2006:33-55.XU Yi.Experimental Study on Effects of Traffic Loadon Expressway Subgrade[D].Nanjing:Hohai Univer-sity,2006:33-55.
[8]赵向东,陈波,姜福兴.微地震工程应用研究[J].岩石力学与工程学报,2002,21(增2):2609-2612.ZHAO Xiang-dong,CHEN Bo,JIANG Fu-xing.Studyof Micro-seismic Engineering Applications[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(S2):2609-2612.
[9]LUO X,SU H,SHA C,et al.A Microseismic Moni-toring Trial for the Stability Assessment of a SuperTunnel at Jinping Dam,China[C]//LEUNG C F,ZHOU Y X.ISRM International Symposium 2006.Singapore City:World Scientific Publishing,2006:154.
[10]王全凤,刘良林,沈章春.弹性变形能形式的地震损伤评价模型[J].建筑科学与工程学报,2008,25(4):31-35.WANG Quan-feng,LIU Liang-lin,SHEN Zhang-chun.Seismic Damage Assessment Model of Form ofElastic Deformation Energy[J].Journal of Architec-ture and Civil Engineering,2008,25(4):31-35.
[11]楼梦麟,雍国柱,李建元.阻尼特性对组合结构地震反应的影响[J].建筑科学与工程学报,2007,24(2):24-29.LOU Meng-lin,YONG Guo-zhu,LI Jian-yuan.Influ-ence of Damping Characteristics on Seismic Responsesof Composite Structures[J].Journal of Architectureand Civil Engineering,2007,24(2):24-29.
[12]邓亚虹,夏唐代,彭建兵,等.半空间上水平层状场地自振频率特性研究[J].建筑科学与工程学报,2009,26(1):30-36.DENG Ya-hong,XIA Tang-dai,PENG Jian-bing,et al.Research on Natural Frequency Characteristicsof Horizontal Layered Soils on Half Space[J].Journalof Architecture and Civil Engineering,2009,26(1):30-36.
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