|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
不同刚度地铁地下车站结构振动台试验测试数据的时频特征分析
DOI: 10.3969/j.issn.1671-7627.2015.04.014, PP. 77-84
Keywords: 振动台模型试验,时频累积能量,最优基,整体剪切刚度
Abstract:
以模型结构整体剪切刚度量化微粒混凝土和石膏模型结构的刚度比,根据小波包变换的频带分布特征确定频带与结点的输出关系,并基于最小熵准则的最优基选择算法,对比分析了不同刚度三层三跨地铁地下车站侧墙加速度反应的时频特性。研究结果表明:最优小波包变换方法具有自适应的频域分辨能力,能较好地解决频带重叠现象。采用最优基小波包变换技术能有效挖掘出由结构材料不同引起的模型结构加速度反应的时间-频率-能量之间的差异。在强震作用下,微粒混凝土模型结构加速度反应的特征频带总能量高于石膏模型结构;石膏模型结构加速度反应在0～6.25hz频带的能量集中程度高于微粒混凝土模型结构,在>6.25～12.5hz频带内的能量累积速率较微粒混凝土模型结构快;石膏模型结构加速度反应各特征频带进入快速能量累积的时刻均早于微粒混凝土结构。
| [1] | chengx,wangzh,zuox,etal.shakingtabletestontheseismicfailurecharacteristicsofasubwaystationstructureonliquefiableground[j].earthquakeengineering&structuraldynamics,2013,42(10):1489-1507.
|
| [2] | sameth.thedesignandanalysisofspatialdatastructures[m].saltlakecity:godinlyttlepress,2009.
|
| [3] | cohenl.时-频分析:理论与应用[m].白居宪,译.西安:西安交通大学出版社,2002.
|
| [4] | renwx,sunzs.structuraldamageidentificationbyusingwaveletentropy[j].engineeringstructures,2008,30(10):2840-2849.
|
| [5] | 丁幼亮,李爱群,邓扬.面向结构损伤预警的小波包能量谱识别参数[j].东南大学学报:自然科学版,2011,41(4):824-828.
|
| [6] | zhonggs,aolp,zhaok.influenceofexplosionparametersonwaveletpacketfrequencybandenergydistributionofblastvibration[j].journalofcentralsouthuniversity,2012,19(9):2674-2680.
|
| [7] |
|
| [8] | iyamaj.estimateofinputenergyforelasto-plasticsdofsystemsduringearthquakesbasedondiscretewaveletcoefficients[j].earthquakeengineering&structuraldynamics,2005,34(15):1799-1815.
|
| [9] | hashashy,hookjj,schmidtb,etal.seismicdesignandanalysisofundergroundstructures[j].tunnellingandundergroundspacetechnology,2001,16(4):247-293.
|
| [10] | coifmannrr,wickerhausermv.entropy-basedalgorithmsforbestbasisselection[j].ieeetransactionsoninformationtheory,1992,38(2):713-718.
|
| [11] | uenishik,sakurais.characteristicoftheverticalseismicwavesassociatedwiththe1995hyogo-kennanbu(kobe),japanearthquakeestimatedfromthefailureofthedaikaiundergroundstation[j].earthquakeengineering&structuraldynamics,2000,29(6):813-822.
|
| [12] | wangwl,wangtt,sujj,etal.assessmentofdamageinmountaintunnelsduetothetaiwanchi-chiearthquake[j].tunnellingandundergroundspacetechnology,2001,16(3):133-150.
|
| [13] | wangjm,litehiserjj.thedistributionofearthquakedamagetoundergroundfacilitiesduringthe1976tang-shanearthquake[j].earthquakespectra,1985,1(4):741-757.
|
| [14] | 崔光耀,王明年,于丽,等.汶川地震公路隧道洞口结构震害分析及震害机理研究[j].岩土工程学报,2013,35(6):1084-1091.
|
| [15] | 陈国兴,左熹,王志华,等.地铁车站结构近远场地震反应特性振动台试验[j].浙江大学学报:工学版,2010,44(10):1955-1961.
|
| [16] | chenj,shixj,lij.shakingtabletestofutilitytunnelundernon-uniformearthquakewaveexcitation[j].soildynamicsandearthquakeengineering,2010,30(11):1400-1416.
|
| [17] | dobryr,thevanayagams,medinac,etal.mechanicsoflateralspreadingobservedinafull-scaleshaketest[j].journalofgeotechnicalandgeoenvironmentalengineering,2010,137(2):115-129.
|
| [18] | vidakovicb.统计建模的小波方法[m].田铮,译.北京:高等教育出版社,2007.
|
| [19] | 杨帮华,颜国正,严荣国.脑机接口中基于小波包最优基的特征抽取[j].上海交通大学学报,2005,39(11):143-146.
|
| [20] | 曹茂森,刘经强,任青文.基于最优基小波的基桩弱损伤应力波检测[j].振动与冲击,2006,25(3):155-158.
|
| [21] | daubechiesi.thewavelettransform,time-frequencylocalizationandsignalanalysis[j].ieeetransactionsoninformationtheory,1990,36(5):961-1005.
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
