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

POWRE：估算公路活荷载引起的挡土墙侧向土压力的试点研究

• 批准号: 9870390
• 负责人: Susan Chang
• 金额: $ 3.7万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9870390&HistoricalAwards=false
• 关键词: POWRE; Pilot; Study; Estimate; Lateral

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. ***

9870390常安A试点研究在战地研究方案下得到支持。它的目的有两个：(1)测量挡土墙，以估计公路活荷载引起的侧向土压力；(2)发展勘察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关于侧向土压力增加和挡土墙因卡车经过而产生的响应的数据。目前，很少有现场数据能证实1994年AASHTO LRFD桥梁设计规范和1996年AASHTO公路桥梁标准规范中基于解析功和弹性理论的推荐程序。这项初步研究将提供一个罕见的案例历史，用于与当前的分析结果进行比较，并测试当前AASHTO规范的有效性。此外，还将建立仪表墙的分析模型。这个项目将为调查员提供机会，将她的专业知识扩展到新的领域。调查员以前和现在的工作主要是分析性的，侧重于地震地面运动和地震场地响应的工程影响。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。***