Results 61 to 70 of about 2,652 (218)
Efficient Method for Enhancing Reverse-Time Migration Images Using Vertical Seismic Profiling Data
Applied SciencesVertical seismic profiling has garnered widespread attention in the industry as a supplement to seismic exploration due to its higher data quality compared to surface seismic data.
Cai Lu, Youming Liu
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Nonlinear seismic response of 3D canyon in deep soft soils
Yantu gongcheng xuebao, 2017 A model is proposed for nonlinear seismic response of 3D canyon in deep soft soils. In the model, the viscous-elastic boundary and the equivalent node force input method are combined for wave motion input, and the equivalent linear method is introduced ...
LIANG Jian-wen 1, 2, LIANG Jia-li 2, ZHANG Ji 2, BA Zhen-ning 2
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International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT The EAC‐1A lunar mare simulant, a silty sand, was selected by the European Astronaut Center (EAC) for use in the LUNA analogue facility's lunar simulation testbed. Its stress‐ and strain‐dependent shear modulus and damping ratio were determined via resonant column testing on specimens prepared either from ambient moisture material or oven ...
Christos Vrettos
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Designing Elastic Softening Under Compression via Dipole–Dipole Interactions: The Case of Na2TiSiO5
Small, EarlyView.Pressure usually stiffens solids, yet Na2TiSiO5 exhibits anomalous elastic softening under compression. Unlike conventional mechanisms driven by geometric rearrangements or electronic spin‐state transitions, the softening originates from enhanced dipole coupling along head‐to‐tail TiO5 chains.
Peijie Zhang +7 more
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BuildingsTo evaluate the seismic performance of single-degree-of-freedom (SDOF) systems under mainshock–aftershock (MS–AS) seismic excitation, nonlinear time-history analyses were conducted on SDOF systems with various parameter combinations, using 50 sets of ...
Qin Zhang +6 more
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Architecture and Engineering, 2016 A methodology for assessing the seismic input energy into structure (building) from earthquake (or seismic) excitation is proposed. The procedure is based on the energy balance of the structure and employs the earthquake intensity characteristic known as
Aondowase John Shiwua, Yuri Rutman
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Structural Concrete, EarlyView.Abstract Textile reinforced mortar (TRM) systems have emerged as an effective alternative to conventional FRP strengthening solutions due to their compatibility with concrete substrates and favorable performance under adverse environmental conditions.
Ömer Mercimek +4 more
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Seismic evaluation of the southbound Stellenberg Interchange Bridge, B5593, in South Africa
Structural Concrete, EarlyView.Abstract This study presents a nonlinear finite element assessment of the seismic vulnerability of Bridge B5593, located in the south‐western region of South Africa. Previous evaluations identified a high likelihood of column failure; however, these were based on linear material models incapable of capturing damage evolution.
Wandie Olivier, Trevor Haas
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Advances in Civil EngineeringTo study the vehicle–bridge interaction (VBI) of highway bridges under seismic excitation, a vehicle–bridge couple analysis method based on Ansys is proposed. The 1/2 vehicle model and space beam element model were established to analyze the VBI response
Peng Qiao +5 more
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Shaking Table Test Study on Seismic Performance of Hollow Rectangular Piers
Advances in Civil Engineering, 2019 To study the seismic performance of hollow reinforced concrete piers under dynamic loads, nine hollow pier specimens with different stirrup ratios, reinforcement ratios, and axial compression ratios are designed and manufactured. The El Centro wave, Taft
Yanli Shen, Bo Wei
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