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Showing 1 to 20 of 21 for “"New Madrid Seismic Zone"”.
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Geophysical assessment of soil and rock in the New Madrid seismic zone
… At the Illinois site, borehole control, downhole seismic (DHS), seismic refraction tomography (SRT) and multichannel analysis of surface waves (MASW) data were acquired for the purpose of seismic site characterization. Shear wave and compressional wave velocities were used to estimate depth to …
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Seismic site response of deep soil and embankments in the New Madrid Seismic Zone
… This is to be accomplished by developing new seismic design and assessment methodologies, by improving seismic retrofitting measures, and by exchanging and transferring new technologies. Four major tasks were conducted in this study: characterization of typical sites in the NMSZ, free …
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Identifying lateral spread fissures with ground penetrating radar in the New Madrid seismic zone
… lateral spread fissures created during the New Madrid earthquakes of 1811 and 1812. Aerial imagery was used to locate regions with elongate vented sand indicative of large-scale fissures. Five GPR surveys were conducted over these areas and correlated to two trenches and one hand-dug pit. …
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Seismic loss assessment of sequential rupture of New Madrid Seismic Zone on the Central US
The New Madrid Seismic Zone (NMSZ) is described as a low probability high risk event. In case of a repetition of the 1811-1812 earthquake series, the expected consequences will cause catastrophic impacts to directly affected areas and beyond. An accurate earthquake impact assessment of the NMSZ is …
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Post processing of cone penetration data for assessing seismic ground hazards, with application to the New Madrid seismic zone
The seismic cone penetration test (SCPTu) is the most efficient means for geotechnical site characterization and the evaluation of seismic ground hazards. In this thesis, software systems including ShearPro, ClusterPro, and InSituData, are developed to automate post processing of these SCPTu data. …
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Crustal modification by tectonic events and upper mantle anisotropy beneath the Midcontinent Rift and New Madrid Seismic Zone: insights from receiver function studies and teleseismic shear wave splitting
… and upper mantle modifications beneath the New Madrid Seismic Zone (NMSZ) and the Midcontinent Rift (MCR). Shear wave splitting analysis in the MCR reveals the presence of fossilised anisotropy along the rift axis...In the NMSZ, anticipated rift-parallel fast directions associated with …
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Assessing the Effectiveness of Reducing Seismic Vulnerability by a Program of Bridge Pier Wrapping
… representative of the bridge inventory in the New Madrid Seismic Zone as a whole and has characteristics that differ markedly from those for inventories of bridges in California seismic zones; (b) There is likely to be significant damage to multi-column bents of bridges on primary emergency …
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Regional earthquake loss estimation : role of transportation network, sensitivity and uncertainty, and risk mitigation
… U.S. under threat from earthquakes from the New Madrid Seismic Zone, we (1) evaluate regional and national losses from scenario earthquakes, (2) quantify uncertainty on the losses through loss risk curves including contributions from seismicity, attenuation, fragilities, etc. and (3) assess …
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Deep learning-based surrogate models for post-earthquake damage assessment
<p>"Seismic damage assessment is a critical step to enhance community resilience in the wake of an earthquake. This study aims to develop deep learning-based surrogate models for widely used fragility curves to achieve more accurate and rapid assessment in practice. These surrogate models are based …
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Use of Cone Penetration Testing in the Interpretation of Ground Shaking From Paleoliquefaction Evidence
To evaluate seismic hazard in regions of infrequent earthquakes it is often necessary to rely on evidence left from earthquakes that occurred before seismographs were available. This evidence can consist of human observations or of evidence left in the geologic record. The New Madrid Seismic Zone …
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Quasi-isolated highway bridges: influence of bearing anchorage strength on seismic performance
… these bearings also have potential utility in seismic events. IDOT has developed an earthquake resisting system (ERS) using the displacement capacity of typical bearings to achieve a structural response similar to isolation. Earlier research at the University of Illinois comprised full-scale …
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Simulation-based fragility relationships for unreinforced masonry buildings
… of homes in the 8-state region impacted by the New-Madrid Seismic Zone and an even greater portion of the building stock in most other regions of the world. In addition to significant population, the brittle nature of URM buildings further supports a thorough consideration of seismic response …
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Probabilistic Assessment of Non-Ductile Reinforced Concrete Frames Susceptible to Mid-America Ground Motions
… fact that none with intensity comparable to the New Madrid sequence of 1811 12 or the Charleston earthquake of 1886 has occurred in the past century, have caused the earthquake hazard in the region to be ignored until quite recently. The seismic performance of reinforced concrete (RC) frames in …
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Seismic parameters for the central United States based on paleoliquefaction evidence in the Wabash Valley
Seismicity in the central United States has typically been defined by the New Madrid Seismic Zone. Recent discoveries of paleoliquefaction evidence outside that Zone suggest prehistoric earthquake magnitudes in the Wabash Valley far exceed historical events. This geotechnical engineering study of …
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Nonlinear seismic analysis of quasi-isolation systems for earthquake protection of bridges
Quasi-isolation is a modern bridge seismic design philosophy where nonlinearity is permitted to occur in specific bearing components such that forces transferred into the substructure are reduced and isolation is achieved by sliding of the bearings. The system is a pragmatic approach for providing …
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Resilience optimization of systems of interdepedent networks
… earthquake hazards due to its proximity to the New Madrid Seismic Zone (NMSZ). We show that the proposed methodologies represent useful tools for decision makers and stakeholders, which can support optimal mitigation and recovery planning.
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Seismic behavior and design of integral abutment bridges in southern Illinois
… when subjected to a variety of loads. The seismic behavior of IABs is of particular interest to regions such as southern Illinois, where proximity to the New Madrid Seismic Zone may create significant ground motion accelerations during an earthquake. IABs are common in modern bridge design …
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Seismic Resilience of Rail-Truck Intermodal Freight Transportation Networks
… freight transportation networks subjected to seismic hazard, incorporating input datasets and models that support the framework. The intermodal network is modeled as an integrated multi-scale network, enabling explicit modeling of network component disruptions on a high-resolution local scale …
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Microtremor recordings in Northern Mississippi: Evaluating site effect and correlating with wave climate
… moderate to heavy potential damage area of the New Madrid Seismic Zone, which is in the northern section of ME. Therefore, it is very necessary to evaluate the site effect in Northern Mississippi area in order to prepare for the earthquake. In this research, microtremor recordings are used to …
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Assessment of modeling sensitivity for nonlinear seismic analysis of highway bridges in Illinois
… Highway and Transportation Officials (AASHTO) seismic provisions were updated in 2008. These provisions increased the design earthquake return period from 500 to 1000 years, eventually demanding special structural systems to counteract seismic forces and therefore increasing construction costs. …
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