| 软件滤波在土体自振柱试验中的应用 |
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| 引用本文： | 王炳辉,陈国兴,战吉艳.软件滤波在土体自振柱试验中的应用[J].防灾减灾工程学报,2009,29(1). |
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| 作者姓名： | 王炳辉 陈国兴 战吉艳 |
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| 作者单位： | 南京工业大学岩土工程研究所,南京,210009 |
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| 基金项目： | 江苏省六大人才高峰计划 |
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| 摘 要： | 自振柱试验是测量土样动剪切模量和阻尼比的常用方法,但由于噪声等环境因素的影响,土样扭剪自由振动的衰减波曲线有时会因高频干扰出现不平滑现象,难以得到合理的测试结果。软件数字滤波是解决这类问题的有效方法。本文通过多种软件数字滤波方法优缺点的对比,认为平均滤波法和惯性滤波法能有效解决试验数据中的高频干扰问题,并分别选择适当的滤波参数,得到了平滑的自振衰减波曲线;最后,采用平均滤波法处理了两组自振柱试验数据。结果表明,软件滤波法确能有效消除不合理数据,得到符合一般规律的土体动剪切模量和阻尼比试验结果,从而验证了其在土体自振柱试验中的应用价值。
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| 关 键 词： | 自振柱试验 软件滤波 高频干扰 自由振动衰减曲线 |
Application of Software Filter in the Free Vibration Column Test of Soils |
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| WANG Bing-hui,CHEN Guo-xing,ZHAN Ji-yan.Application of Software Filter in the Free Vibration Column Test of Soils[J].Journal of Disaster Prevent and Mitigation Eng,2009,29(1). |
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| Authors: | WANG Bing-hui CHEN Guo-xing ZHAN Ji-yan |
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| Institution: | WANG Bing-hui,CHEN Guo-xing,ZHAN Ji-yan(Institute of Geotechnical Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Free vibration column test is a common testing method for measuring dynamic shear modulus and damping ratio of soil specimen.Because of the influence of environmental factors,such as noises etc,the free vibration attenuation wave curve of soil specimen obtained from the test sometimes may be unsmooth,which leads to incorrect dynamic shear modulus and damping ratio.Software digital filter is an effective method to solve this problem.By comparing with the main advantages and disadvantages of many filters,the ... |
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| Keywords: | free vibration column test software filter high-frequency interference free vibration attenuation wave |
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