دورية أكاديمية
Numerical and analytical investigation of compressional wave propagation in saturated soils
| العنوان: | Numerical and analytical investigation of compressional wave propagation in saturated soils |
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| المؤلفون: | Han, B, Zdravkovic, L, Kontoe, S |
| المصدر: | 102 ; 93 |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2016 |
| المجموعة: | Imperial College London: Spiral |
| مصطلحات موضوعية: | Hydro-mechanically coupling, Compressional wave propagation, Analytical solution, Finite element analysis, Vertical site response, Science & Technology, Technology, Physical Sciences, Computer Science, Interdisciplinary Applications, Engineering, Geological, Geosciences, Multidisciplinary, Geology, BIOT SLOW-WAVE, ULTRASONIC FREQUENCIES, POROUS-MEDIA, NIVELSTEINER SANDSTONE, GROUND MOTIONS, ELASTIC WAVES, EARTHQUAKE, RANGE, SITE, Geological & Geomatics Engineering, 0905 Civil Engineering, 0914 Resources Engineering and Extractive Metallurgy, 0915 Interdisciplinary Engineering |
| الوصف: | In geotechnical earthquake engineering, wave propagation plays a fundamental role in engineering applications related to the dynamic response of geotechnical structures and to site response analysis. However, current engineering practice is primarily concentrated on the investigation of shear wave propagation and the corresponding site response only to the horizontal components of the ground motion. Due to the repeated recent observations of strong vertical ground motions and compressional damage of engineering structures, there is an increasing need to carry out a comprehensive investigation of vertical site response and the associated compressional wave propagation, particularly when performing the seismic design for critical structures (e.g. nuclear power plants and high dams). Therefore, in this paper, the compressional wave propagation mechanism in saturated soils is investigated by employing hydro-mechanically (HM) coupled analytical and numerical methods. A HM analytical solution for compressional wave propagation is first studied based on Biot’s theory, which shows the existence of two types of compressional waves (fast and slow waves) and indicates that their characteristics (i.e. wave dispersion and attenuation) are highly dependent on some key geotechnical and seismic parameters (i.e. the permeability, soil stiffness and loading frequency). The subsequent HM Finite Element (FE) study reproduces the duality of compressional waves and identifies the dominant permeability ranges for the existence of the two waves. In particular the existence of the slow compression wave is observed for a range of permeability and loading frequency that is relevant for geotechnical earthquake engineering applications. In order to account for the effects of soil permeability on compressional dynamic soil behaviour and soil properties (i.e. P-wave velocities and damping ratios), the coupled consolidation analysis is therefore recommended as the only tool capable of accurately simulating the dynamic response of geotechnical ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0266-352X |
| العلاقة: | Computers and Geotechnics; http://hdl.handle.net/10044/1/29029Test |
| DOI: | 10.1016/j.compgeo.2016.01.019 |
| الإتاحة: | https://doi.org/10.1016/j.compgeo.2016.01.019Test http://hdl.handle.net/10044/1/29029Test |
| حقوق: | © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0Test/ |
| رقم الانضمام: | edsbas.55B280BA |
| قاعدة البيانات: | BASE |
| تدمد: | 0266352X |
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| DOI: | 10.1016/j.compgeo.2016.01.019 |