Search Results - "HASHASH, Youssef"

Degradation-Related Changes in Ballast Gradation and Aggregate Particle Morphology by Qian, Yu, Boler, Huseyin, Moaveni, Maziar, Tutumluer, Erol, Hashash, Youssef M. A, Ghaboussi, Jamshid

“…AbstractBallast degradation or fouling often associated with deteriorating railroad track performance refers to the condition of a new ballast layer changing…”
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Nonlinear Site Response Analysis with Pore-Water Pressure Generation for Liquefaction Triggering Evaluation by Olson, Scott M, Mei, Xuan, Hashash, Youssef M. A

“…AbstractThe cyclic-stress approach is widely used to evaluate level-ground liquefaction triggering. Although easy to use, several limitations introduce…”
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Influence of Tall Buildings on Seismic Response of Shallow Underground Structures by Hashash, Youssef M. A, Dashti, Shideh, Musgrove, Michael, Gillis, Kenneth, Walker, Martin, Ellison, Kirk, Basarah, Yuamar I

“…AbstractShallow underground structures are commonly built in close proximity to tall buildings in dense urban environments. Although it is well known that such…”
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Seismic behaviour of tunnels: From experiments to analysis by Tsinidis, Grigorios, de Silva, Filomena, Anastasopoulos, Ioannis, Bilotta, Emilio, Bobet, Antonio, Hashash, Youssef M.A., He, Chuan, Kampas, Georgios, Knappett, Jonathan, Madabhushi, Gopal, Nikitas, Nikolaos, Pitilakis, Kyriazis, Silvestri, Francesco, Viggiani, Giulia, Fuentes, Raul

“…•A State-of-the-art review on the seismic response and design of tunnels is presented.•Emphasis is placed on recorded responses of actual tunnels during past…”
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Centrifuge and Numerical Modeling of the Seismic Response of Buried Water Supply Reservoirs by AlKhatib, Karim, Hashash, Youssef M. A., Ziotopoulou, Katerina, Heins, James

“…Buried water reservoirs are increasingly being built to replace open aboveground municipal water supply reservoirs in urban areas to enhance water quality and…”
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Hydrodynamic pressures on rigid walls subjected to cyclic and seismic ground motions by AlKhatib, Karim, Hashash, Youssef M. A., Ziotopoulou, Katerina, Morales, Brian

“…Seismic design of water retaining structures relies heavily on the response of the retained water to shaking. The water dynamic response has been evaluated by…”
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Evaluation of lateral stability of railway tracks due to ballast degradation by Ngamkhanong, Chayut, Feng, Bin, Tutumluer, Erol, M.A. Hashash, Youssef, Kaewunruen, Sakdirat

“…•Fouled ballast modelings have been conducted using DEM.•Progressive degradation of ballast has been evaluated and modelled.•Effect of ballast degradation on…”
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Simplified Model for Wall Deflection and Ground-Surface Settlement Caused by Braced Excavation in Clays by Kung, Gordon T, Juang, C. Hsein, Hsiao, Evan C, Hashash, Youssef M

“…Accurate prediction of ground-surface settlement adjacent to an excavation is often difficult to achieve without using accurate representation of small-strain…”
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Simulation-based site amplification model for shallow bedrock sites in Korea by Aaqib, Muhammad, Park, Duhee, Adeel, Muhammad Bilal, Hashash, Youssef M. A, Ilhan, Okan

“…A new simulation-based site amplification model for shallow sites with thickness less than 30 m in Korea is developed. The site amplification model consists of…”
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Simulated site amplification for Central and Eastern North America: Data set development and amplification models by Ilhan, Okan, Hashash, Youssef MA, Stewart, Jonathan P, Rathje, Ellen M, Nikolaou, Sissy, Campbell, Kenneth W

“…This article presents a suite of response spectrum (RS) and Fourier amplitude spectrum (FAS) site amplification models for Central and Eastern North America…”
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Relative differences between nonlinear and equivalent-linear 1-D site response analyses by Kim, Byungmin, Hashash, Youssef M. A, Stewart, Jonathan P, Rathje, Ellen M, Harmon, Joseph A, Musgrove, Michael I, Campbell, Kenneth W, Silva, Walter J

“…This study investigates the conditions for which one-dimensional (1-D) nonlinear (NL) site response analysis results are distinct from equivalent-linear (EL)…”
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Ergodic site amplification model for central and eastern North America by Stewart, Jonathan P, Parker, Grace A, Atkinson, Gail M, Boore, David M, Hashash, Youssef M. A, Silva, Walter J

“…The United States Geological Survey national seismic hazard maps have historically been produced for a reference site condition of VS30 = 760 m/s. For other…”
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PEER NGA-East database by Goulet, Christine A, Kishida, Tadahiro, Ancheta, Timothy D, Cramer, Chris H, Darragh, Robert B, Silva, Walter J, Hashash, Youssef M. A, Harmon, Joseph, Parker, Grace A, Stewart, Jonathan P, Youngs, Robert R

“…This article documents the earthquake ground motion database developed for the NGA-East Project, initiated as part of the Next Generation Attenuation (NGA)…”
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Site response analysis using downhole array recordings during the March 2011 Tohoku-Oki earthquake and the effect of long-duration ground motions by Kim, Byungmin, Hashash, Youssef M. A

“…Downhole arrays provide enhanced understanding of dynamic soil behavior and site response. Historically, downhole array recordings have been available only for…”
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Shared memory parallelization for high-fidelity large-scale 3D polyhedral particle simulations by Park, Eun Hyun, Kindratenko, Volodymyr, Hashash, Youssef M.A.

“…Particle shape plays a vital role in granular material behavior, but simulations with realistic particle shapes are uncommon due to significant computational…”
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Evaluation of a simplified soil constitutive model considering implied strength and pore-water pressure generation for one-dimensional (1D) seismic site response by Mei, Xuan, Olson, Scott M, Hashash, Youssef M.A

“…Pore-water pressure (PWP) generation can lead to soil softening and liquefaction of sandy soils during earthquakes, with potential influence on site response…”
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Role of Initial Particle Arrangement in Ballast Mechanical Behavior by Qian, Yu, Lee, Seung Jae, Tutumluer, Erol, Hashash, Youssef M. A, Ghaboussi, Jamshid

“…AbstractBallast containing large aggregate particles with uniform gradation is an essential layer in a railway substructure to facilitate load distribution and…”
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Site amplification functions for central and eastern North America; Part II, Modular simulation-based models by Harmon, Joseph, Hashash, Youssef M. A, Stewart, Jonathan P, Rathje, Ellen M, Campbell, Kenneth W, Silva, Walter J, Ilhan, Okan

“…Site amplification models for Central and Eastern North America are developed from simulation results presented in a companion paper. Linear and nonlinear…”
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Simplified Model for Small-Strain Nonlinearity and Strength in 1D Seismic Site Response Analysis by Groholski, David R, Hashash, Youssef M. A, Kim, Byungmin, Musgrove, Michael, Harmon, Joseph, Stewart, Jonathan P

“…AbstractCommonly used simplified one-dimensional nonlinear seismic site response analyses employ constitutive models based on a variation of the hyperbolic…”
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Mitigating Lateral Spreading Forces on Large Foundations Using Ground Deflection Walls by Olson, Scott M, Muszynski, Mark R, Hashash, Youssef M. A, Phillips, Camilo

“…AbstractDeflection walls were considered for mitigating lateral spreading-induced bending moments on large-dimension foundations. The efficacy of the walls was…”
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