Fundamental Study of Pressuremeter Testing in Stiff Clay

硬粘土压力计测试基础研究

• 批准号: 8414478
• 负责人: G. Wayne Clough
• 金额: $ 19.94万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-09-15 至 1989-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8414478&HistoricalAwards=false
• 关键词: Fundamental; Study; Pressuremeter; Testing; Stiff

Traditionally, design and analysis parameters for stiff clays are selected more on the basis of educated guesswork and past experience than from direct test results. This is particularly true for values of modulus and coefficients of lateral earth pressure. In an attempt to reduce the subjectivity in the parameter definition process, there is a growing trend to use one or other forms of pressuremeter in characterizing stiff clays. This research is a multi-phased effort involving field, laboratory, and analytical approaches designed to provide insight into pressuremeter testing of stiff clays. A near ideal stiff clay medium has been located in Richmond, VA, for testing, and preliminary laboratory work has been performed. The results of the research should enhance the understanding of stiff clay response to pressuremeter loading and help define the proper techniques for pressuremeter testing in stiff clays.

传统上，刚性粘土的设计和分析参数的选择更多是基于有根据的猜测和过去的经验，而不是直接的试验结果。对于侧土压力的模量和系数值尤其如此。为了减少参数定义过程中的主观性，使用一种或另一种形式的压力计来表征硬质粘土的趋势日益增长。这项研究是一个多阶段的努力，涉及现场、实验室和分析方法，旨在为硬质粘土的压力计测试提供见解。一种接近理想的硬粘土介质已经在弗吉尼亚州里士满进行了测试，并进行了初步的实验室工作。研究结果将增强对刚性粘土对压力计加载响应的理解，并有助于确定在刚性粘土中进行压力计测试的适当技术。