Mitigation of Damage to Structures Supported on Slab-on- Ground Foundations Constructed Over Expansive Soils

减轻对膨胀土上建造的板式地基支撑结构的损坏

• 批准号: 9015850
• 负责人: Warren Wray
• 金额: $ 24.69万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-01-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015850&HistoricalAwards=false
• 关键词: Mitigation; Damage; Structures; Supported; Slab

The work is designed to provide a method by which differential soil movement can be predicted in expansive soils beneath slab-on- grade foundation influenced by climate. Its ultimate objective is to mitigate structural damage resulting from expansive soil movement. The work plan consist of theoretical, laboratory and field studies, and will continue the field measurements obtained during a recently completed research project. Monthly measurements will be made of soil moisture content, soil suction, surface elevation and depth of shrink/heave, and the long-term development of the distorted shape of swelling soil beneath slabs will be measured and compared with that predicted by a model developed from the field data acquired from the previous study. These results of the work will elucidate and relate soil differential movement as a function of climate, soil suction and clay mineralogy with actual measured field values.

这项工作旨在提供一种方法， 不同的土壤运动可以 在板上膨胀土中预测， 受气候影响的地基。 其 最终目标是减轻结构性 膨胀土损害 运动 工作计划包括 理论、实验室和实地研究， 并将继续实地测量 在最近完成的一项研究中， 项目 每月测量一次 土壤含水量，土壤吸力 表面标高和收缩/隆起深度， 和长远发展， 膨胀土变形 将测量并与之进行比较 根据实地研究开发的模型预测， 从以前的研究中获得的数据。 这些 工作的结果将阐明和 土壤差异运动， 气候、土壤吸力和粘土矿物学 与实际测量的字段值。