Searched for: faculty%3A%22Civil%255C%252BEngineering%255C%252Band%255C%252BGeosciences%22
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Liu, X. (author), Markine, V.L. (author), Shevtsov, I. (author)
This paper presented the performance study of two frogs in a double crossover in the railway network in the Netherlands. These frogs are located on the same track line. Each train passes through Frog 1 in the facing direction and Frog 2 in the trailing direction. Both frogs are monitored with ESAH-M crossing dynamic behaviour measurement tool...
conference paper 2015
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Liu, X. (author), Markine, V.L. (author), Shevtsov, I. (author), Dollevoet, R.P.B.J. (author)
The continuous increasing demand of public transportation capacity requires the railway network operating in tight schedule. The high transporting volumes not only aggravate the degradation of railway infrastructure but also shorten the time for maintenance. Well-arranged infrastructure maintenance contributes to the budget reduction and...
conference paper 2015
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Liu, Y. (author), Draganov, D.S. (author), Wapenaar, C.P.A. (author), Arntsen, B. (author)
In the field of seismic interferometry using noise, surface waves and body waves between receivers have been retrieved by crosscorrelating recordings of uncorrelated noise sources to extract useful subsurface information. When the positions of the noise sources are known, inter-source interferometry can be applied to retrieve the wavefileds...
conference paper 2015
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Liu, K. (author), Vardon, P.J. (author), Arnold, P. (author), Hicks, M.A. (author)
Hysteresis is a well-known phenomenon that exists in the soil water retention behaviour of unsaturated soils. However, there is little research on the effects of hysteresis on slope stability. If included in slope stability analyses, commonly the suction in the unsaturated zone is taken as non-hysteretic. In this paper, the authors investigate...
conference paper 2015
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Liu, D. (author), Heard, P. (author), Savija, B. (author), Smith, G. (author), Schlangen, E. (author), Flewitt, P. (author)
In the present work, the microstructure and mechanical properties of Gilsocarbon graphite have been characterized over a range of length-scales. Optical imaging, combined with 3D X-ray computed tomography and 3D high-resolution tomography based on focus ion beam milling has been adopted for microstructural characterization. A range of small...
conference paper 2015
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Menenti, M. (author), Li, X. (author), Wang, J. (author), Vereecken, H. (author), Li, J. (author), Mancini, M. (author), Liu, Q. (author), Jia, L. (author), Li, J. (author), Kuenzer, C. (author), Huang, S. (author), Yesou, H. (author), Wen, J. (author), Kerr, Y. (author), Cheng, X. (author), Gourmelen, N. (author), Ke, C. (author), Ludwig, R. (author), Lin, H. (author), Eineder, M. (author), Ma, Y. (author), Su, Z.B. (author)
Ten Dragon 3 projects deal with hydrologic and cryosphere processes, with a focus on the Himalayas and Qinghai – Tibet Plateau, but not limited to that. At the 1st Dragon 3 Progress Symposium in 2013 a significant potential for a better and deeper integration appeared very clearly and we worked out an overview of the ten projects identifying...
conference paper 2015
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Liu, X. (author), Tzimiris, G. (author), Li, J. (author), Scarpas, T. (author), Hofman, R. (author), Voskuilen, J. (author)
In order to adequately characterize the fatigue response of the various membranes with surrounding multilayer surfacing layers on orthotropic steel decks and collect the necessary parameters for FE modeling, the details of the cyclic Membrane Adhesion Tester (MAT) are introduced. The fatigue damage in membrane interface is related to the amount...
conference paper 2015
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Cats, O. (author), Abenoza, R.F. (author), Liu, C. (author), Susilo, Y.O. (author)
conference paper 2015
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Liu, Y. (author), Arntsen, B. (author), Wapenaar, C.P.A. (author), Van der Neut, J.R. (author)
The virtual source method has been applied successfully to retrieve the impulse response between pairs of receivers in the subsurface. This method is further improved by an updown separation prior to the crosscorrelation to suppress the reflections from the overburden and the free surface. In a reversed situation where the sources are in the...
conference paper 2014
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Tao, Y. (author), Gao, D.W. (author), Wang, H.Y. (author), Zhang, X. (author), Ghasimi, S.M.D. (author), Ozgun, H. (author), Ersahin, M.E. (author), Zhou, Z.B. (author), Liu, G. (author), Temudo, M.F. (author), Kloek, J. (author), Spanjers, H. (author), De Kreuk, M.K. (author), Van Lier, J.B. (author)
conference paper 2014
document
Liu, Y. (author), Wapenaar, C.P.A. (author), Arntsen, B. (author)
The retrieval of the Green's functions between receiver pairs by multi-dimensional deconvolution can be extended to extract the impulse response between source pairs through source-receiver reciprocity. However in general, the procedure requires the separation of the outgoing and incoming wavefields at the sources, which reduces to the...
conference paper 2014
document
Hansen, W. (author), Liu, Z. (author), Koenders, E.A.B. (author)
Viscoelastic stress modeling in ageing cementitious materials is of major importance in high performance concrete of low water cement ratio (e.g. w/c ~0.35) where crack resistance due to deformation restraint needs to be determined. Total stress analysis is complicated by the occurrence of internal stresses due to shrinkage, which requires...
conference paper 2014
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Hashemifarahani, H. (author), Ditmar, P.G. (author), Inacio, P.M.G. (author), Klees, R. (author), Guo, J. (author), Guo, X. (author), Liu, X. (author), Zhao, Q. (author), Didova, O. (author), Ran, J. (author), Sun, Y. (author), Tangdamrongsub, N. (author), Gunter, B.C. (author), Riva, R.E.M. (author), Steele-Dunne, S.C. (author)
conference paper 2014
document
Liu, Y. (author), Wapenaar, C.P.A. (author), Romdhane, A. (author)
Seismic interferometry (SI) is usually implemented by crosscorrelation (CC) to retrieve the impulse response between pairs of receiver positions. An alternative approach by multidimensional deconvolution (MDD) has been developed and shown in various studies the potential to suppress artifacts due to irregular source distribution and intrinsic...
conference paper 2014
document
Liu, H. (author), Tang, G. (author), Imparato, D. (author), Cui, H. (author), Song, B. (author), Rizos, C. (author)
Multi-GNSS networks, for example M-GEX and iGMAS, are set up and grow quickly with the development of new navigation systems and multi-GNSS receivers. It is unavoidable that GNSS signals are deteriorated by several error sources. Thus GNSS network operators, data users and receiver designers all require data quality checking (QC). However, few...
conference paper 2014
document
Liu, X. (author), Tzimiris, G. (author), Scarpas, T. (author), Hofman, R. (author), Voskuilen, J. (author)
In order to adequately characterize the fatigue response of the various membranes with surrounding multilayer surfacing layers on orthotropic steel decks and collect the necessary parameters for FE modeling, the details of the cyclic Membrane Adhesion Tester (MAT) are introduced. The fatigue damage in membrane interface is related to the amount...
conference paper 2014
document
Liu, Q. (author), Schlangen, H.E.J.G. (author), Van Bochove, G. (author)
Porous asphalt shows excellent performance in both noise reduction and water drainage. Although porous asphalt has these great qualities, its service life is much shorter (sometimes only half) compared to dense graded asphalt roads. Ravelling, which is the loss of aggregate particles from the surface layer, is the main damage mechanism of porous...
conference paper 2013
document
Li, J. (author), Liu, X. (author), Scarpas, A. (author), Tzimiris, G. (author)
Light weight orthotropic steel bridge decks have been widely utilized for bridges in seismic zones, movable bridges and long span bridges. In the last three decades, severe problems were reported in relation to asphaltic surfacing materials on orthotropic steel deck bridges. Earlier investigations have shown that the bonding strength of membrane...
conference paper 2013
document
Tzimiris, G. (author), Liu, X. (author), Scarpas, A. (author), Li, J. (author), Hofman, R. (author), Voskuilen, J. (author)
Due to lightweight and flexibility, orthotropic steel deck bridges become popular the last decades but several problems were reported in relation to asphalt surfacing materials such as rutting, cracking, loss of bond between the surfacing system and steel deck. In the Netherlands a surfacing structure for orthotropic steel bridge decks mostly...
conference paper 2013
document
Liu, X. (author), Scarpas, A. (author), Li, J. (author), Tzimiris, G. (author), Hofman, R. (author), Voskuilen, J. (author)
In order to adequately characterize the adhesive bonding strength of the various membranes with surrounding materials on orthotropic steel decks and collect the necessary parameters for FE modeling, details of the Membrane Adhesion Test (MAT) are introduced. Analytical constitutive relations of the MAT device have been derived using the same...
conference paper 2013
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