Analytical and Experimental Studies of the Earthquake Behavior of Concrete Dams

混凝土坝地震性能分析与试验研究

• 批准号: 8619908
• 负责人: John Hall
• 金额: $ 9.9万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-05-01 至 1989-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8619908&HistoricalAwards=false
• 关键词: Analytical; Experimental; Studies; Earthquake; Behavior

Three research tasks are proposed to investigate issues of concern in the earthquake behavior of concrete dams: opening and closing of contraction joints in arch dams, nonuniform seismic input, and cracking in gravity dams. The first two tasks are computer studies and will result in significant enhancement of the computational capabilities available to practicing engineers. The shaking table tests on model gravity dam monoliths will provide insight into the crack propagation mechanism as well as the dynamic stability in the presence of cracks. These tests will be conducted on a small, high-frequency shaking table which was recently donated to Caltech. An additional research task for the future, the reservoir sediment experiments will be conducted in actual reservoirs and are designed to provide information on dynamic water-sediment interaction about which little is presently known.

本文提出了三个研究课题：拱坝收缩缝的开闭、非均匀地震输入和重力坝的开裂。前两项任务是计算机研究，将显著提高实践工程师的计算能力。通过对模型重力坝整体的振动台试验，可以深入了解其裂纹扩展机理和存在裂纹时的动力稳定性。这些测试将在最近捐赠给加州理工学院的小型高频振动台上进行。今后的另一项研究任务是，水库沉积物实验将在实际的水库中进行，旨在提供目前知之甚少的水-沉积物动态相互作用的信息。