POWRE: Pilot Study to Estimate Lateral Earth Pressures on Retaining Walls Due to Highway Live Loads

9870390 Chang A试验研究由POWRE计划支持。 其目的有两个：（1）测量挡土墙，以估计公路活荷载引起的侧向土压力;（2）培养调查人员在岩土现场测量和现场数据分析方面的能力。 仪器阵列的目的是收集数据的增加，侧土压力和响应的挡土墙，由于通过卡车。 目前，几乎没有现场数据来证实1994年AASHTO LRFD桥梁设计规范和1996年AASHTO公路桥梁标准规范中规定的推荐程序，这些程序基于分析工作和弹性理论。 这项试点研究将提供一个罕见的案例历史比较，目前的分析结果和测试的有效性，目前AASHTO规范。 此外，还将开发仪表墙的分析模型。 该项目将为研究人员提供将其专业知识扩展到新领域的机会。 调查员以前和目前的工作主要是分析性的，重点是地震地面运动和地震现场反应的工程影响。 该项目还将为她提供与华盛顿州交通部和其他教育机构的新合作伙伴合作的机会。 ***

9870390 Chang A pilot study is supported under the POWRE program. Its purpose is twofold: (1) to instrument a retaining wall to estimate lateral earth pressures due to highway live loads and (2) to develop the investigator's abilities in the areas of geotechnical field instrumentation and analysis of field data. The purpose of the instrumentation array is to collect data on the increase in lateral earth pressure and the response of a retaining wall due to passing trucks. At present, there is little field data to corroborate the recommended procedures prescribed in the 1994 AASHTO LRFD Bridge Design Specifications and the 1996 AASHTO Standard Specifications for Highway Bridges which are based on analytical work and elastic theory. This pilot study will provide a rare case history for comparison to current analytical results and test the validity of the current AASHTO specifications. In addition, an analytical model of the instrumented wall will be developed. This project will provide the investigator with the opportunity to expand her expertise into new areas. The previous and current work of the investigator has been primarily analytical, focusing on the engineering implications of earthquake ground motions and seismic site response. The project will also provide her with the opportunity to work with new partners at the Washington State Department of Transportation and at other educational institutions. ***