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Vibration Characteristics of Underground Structure and Surrounding Soil Underneath High Speed Railway Based on Field Vibration Tests
المؤلفون المشاركون
Zhang, Fengshou
Zhou, Biao
Xie, Xiongyao
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-16، 16ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-05-23
دولة النشر
مصر
عدد الصفحات
16
التخصصات الرئيسية
الملخص EN
A series of field vibration tests were carried out at an underground metro station underneath the high speed railway by installing accelerometers both on the side wall of the metro station and in the surrounding soil.
Within the frequency domain of 0–200 Hz, the attenuation, transmission, and frequency response properties of vibration for both the underground structure and the surrounding soil were analyzed and compared.
The attenuation index is found to be decreased with the increase of underground structure stiffness.
The existence of damping and coupling effect of the surrounding soil, as well as the interference of axle spectrum from excitation sources, makes it very challenging to separate the frequency response characteristics of structures from soil at FFT (Fast Fourier Transform) spectrum.
The combined NExT (Natural Excitation Technique) and HHT (Hilbert–Huang Transform) method are thus used to study the waveforms and propagation velocities of vibration waves in underground structure and surrounding soil.
The wave types and their speeds are determined and used for evaluating the structural elastic modulus.
Compared with the attenuation index or natural frequency, wave velocity is easier to be recognized, is sensitive to the change of the structural stiffness, and requires limited number of sensors in the field.
Based on the properties of the vibration characteristics studied in this work, the wave velocity based method is recommended for the health monitoring of underground structures.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Zhou, Biao& Zhang, Fengshou& Xie, Xiongyao. 2018. Vibration Characteristics of Underground Structure and Surrounding Soil Underneath High Speed Railway Based on Field Vibration Tests. Shock and Vibration،Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215190
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Zhou, Biao…[et al.]. Vibration Characteristics of Underground Structure and Surrounding Soil Underneath High Speed Railway Based on Field Vibration Tests. Shock and Vibration No. 2018 (2018), pp.1-16.
https://search.emarefa.net/detail/BIM-1215190
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Zhou, Biao& Zhang, Fengshou& Xie, Xiongyao. Vibration Characteristics of Underground Structure and Surrounding Soil Underneath High Speed Railway Based on Field Vibration Tests. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-16.
https://search.emarefa.net/detail/BIM-1215190
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1215190
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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