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Showing 1 to 15 of 15 for “"Liquefaction Triggering"”.
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Liquefaction Triggering Model for Subduction Zone Earthquakes
Liquefaction is one of the major causes of ground failures during an earthquake. Recent evidence shows that the existing variants of the "simplified" liquefaction evaluation procedure lead to inaccurate results for megathrust earthquakes in subduction interfaces. To overcome this drawback and to …
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Evaluating Liquefaction Triggering Potential from Induced Seismicity in Oklahoma, Texas, and Kansas
… Texas, and Kansas (OTK) over the last ten years. Liquefaction observed following the 3 September 2016, Mw5.8 Pawnee, OK, induced earthquake raises concerns regarding the liquefaction risk posed by future induced earthquakes. The stress-based simplified liquefaction evaluation procedure is widely …
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Development of an Improved and Internally-Consistent Framework for Evaluating Liquefaction Damage Potential
Soil liquefaction continues to be one of the leading causes of ground failure during earthquakes, resulting in significant damage to infrastructure around the world. The study presented herein aims to develop improved methodologies for predicting liquefaction triggering and the consequent damage …
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Development of an Energy-based Liquefaction Evaluation Procedure
Soil liquefaction during earthquakes is a phenomenon that can cause tremendous damage to structures such as bridges, roads, buildings, and pipelines. The objective of this research is to develop an energy-based approach for evaluating the potential for liquefaction triggering. The current …
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Liquefaction Analysis of Level and Sloping Ground Using Field Case Histories and Penetration Resistance
Lastly, the author proposed a comprehensive liquefaction analysis procedure for sandy soils to evaluate liquefaction susceptibility, liquefaction triggering, and post-triggering stability. The procedure incorporates the proposed relationships to estimate yield and liquefied strength ratio, and does …
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Insights into the Liquefaction Hazards in Napier and Hastings Based on the Assessment of Data from the 1931 Hawke's Bay, New Zealand, Earthquake
… several earthquakes in the past during which liquefaction occurred. The 1931 Hawke's Bay earthquake is particularly interesting because it was the deadliest and one of the most damaging earthquakes in New Zealand's history. The study presented herein provides insights into the liquefaction …
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Drained cyclic preshearing effects on the liquefaction resistance of sands
Liquefaction-induced ground failures are a major source of damage and economic loss from earthquakes. Because of this, considerable research has been conducted to investigate factors that affect the liquefaction resistance of coarse-grained soils. Among these, shearing history has been shown to …
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Performance of Columnar Reinforced Ground during Seismic Excitation
… performance of loose ground and remediate liquefaction problems. This research adopts a numerical approach to study seismic performance of soil-cement columnar reinforcements in loose sandy profiles. Different constitutive models were investigated in order to find a model that can properly …
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Case history-based analysis of liquefaction in sloping ground
Liquefaction is one of the most interesting and controversial phenomenon in geotechnical engineering. This phenomenon has caused numerous slope failures in saturated deposits of fine, loose sands and other cohesionless soils. Because of the catastrophic nature of the failures and their impact on …
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Simulating Earthquake-triggered Runout using Higher-order Hydromechanical MPM and PM4Sand
… capability to simulate the runout process, from triggering to post-failure cyclic mobility. The Material Point Method (MPM) is a particle-based computational technique that has achieved significant success in simulating geotechnical problems; however, it suffers from numerical errors that have …
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A Predictive Modeling Approach for Assessing Seismic Soil Liquefaction Potential Using CPT Data
<p>Soil liquefaction, or loss of strength due to excess pore water pressures generated during dynamic loading, is a main cause of damage during earthquakes. When a soil liquefies (referred to as triggering), it may lose its ability to support overlying structures, deform vertically or laterally, or …
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Improving CPT-Based Earthquake Liquefaction Hazard Assessment at Challenging Soil Sites
Earthquake-induced soil liquefaction is a phenomenon in which saturated, sandy soil loses its strength and stiffness during earthquake shaking. Liquefaction can be extremely costly and damaging to infrastructure. The commonly used "simplified" stress-based liquefaction triggering framework is …
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Estimating the effectiveness of stone columns in mitigating post-liquefaction settlement using Plaxis 2D
… in saturated loose sand, it causes post-liquefaction reconsolidation that can potentially yield substantial damage to the structure. To build resilient infrastructure, it is paramount to estimate these settlements as well as introduce soil reinforcement techniques to mitigate associated …
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Full-Scale Shake Table Cyclic Simple Shear Testing of Liquefiable Soil
… of full-scale shake table tests to investigate liquefaction of sandy soils. Consideration of the potential and consequences of liquefaction is critical to the performance of any structure built in locations of high seismicity underlain by saturated granular materials as it is the leading cause …
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One-dimensional site response analyses in potentially liquefiable soil profiles
… characteristics. The limitations of simplified liquefaction assessment methods have prompted an increase in the use of non-linear dynamic analysis methods. Focusing on onedimensional site response of a soil column, this thesis validated a soil constitutive model using in-situ pore pressure …