详情

Site-Specific Seismic Ground Motion Analyses for North-East Arkansas

项目名称：	Site-Specific Seismic Ground Motion Analyses for North-East Arkansas
摘要：	Estimation of liquefaction resistance and shear velocities are key elements in the assessment of potential earthquake damage of existing and new construction sites. Arkansas Department of Transportation (ArDOT) and other agencies in the region need ground motion response analysis (GMRA) data of specific construction sites. As part of a recent ArDOT’s Transportation Research Committee (TRC) Project #1603, researchers have surveyed 15 construction sites in northeast Arkansas in the past three years. Another 20 sites are proposed to be surveyed as part of TRC #1901 in the next two years. However, these sites are not enough to cover the entire region. Since site specific GMRA analysis is expensive and time-consuming, the proposed study will use the available data from these sites and develop neural network models to predict earthquake resistance parameters of other locations. Routine soil test data such as standard penetration test (SPT) values available from historical, current, and future construction projects will be used to predict parameters such as liquefaction resistance, peak ground acceleration, and spectrum velocity profiles. Afterward, seismic risk and hazard maps will be developed. Existing literature suggests that the Bayesian analysis-based risk assessment can quantify the uncertainty in a more meaningful way, thus it will be used to develop an alternative decision support tool. Simultaneously, based on uncertainty analysis of GMRA results, standard ground motion prediction equations will be fine-tuned so that they are applicable for regional scales.
状态：	Completed
资金：	100015
资助组织：	Office of the Assistant Secretary for Research and Technology
项目负责人：	Melson, Christopher
执行机构：	Arkansas State University
开始时间：	20190815
预计完成日期：	20210215
主题领域：	Bridges and other structures；Construction；Geotechnology；Highways；Maintenance and Preservation