Engineering Research Equipment Grant: Upgrade to a Dynamic Soil Testing Apparatus

这一行动是为了支持 复杂土壤的控制系统 土木工程试验仪器 美国加州大学 洛杉矶。 该装置用于 教学和研究。 的 升级的控制系统提供了 测试精度和结果 所需数据测量的准确性 在开发模型的过程中 土的力学响应 循环荷载。 这些分析和计算模型是 是从实验证据中发展出来的 对于无粘性土壤的行为， 大三维循环应力 变化，如土壤质量 强烈地面震动时的经验 由大地震引起的。 升级土壤测试的结果 设备提供了改进的基础 在地震减灾方面。

This action is to support the upgrading of the control system for a sophisticated soil testing apparatus in the Civil Engineering Department of the University of California at Los Angeles . This apparatus is used for teaching as well as for research. The upgraded control system provides the precision of testing and the resulting accuracy of data measurement that is needed in the development of models for the mechanical response of soils under conditions of cyclic loading. These analytical and computational models are being developed from experimental evidence for the behavior of cohesionless soils during large three-dimensional cyclic stress changes, such as those that soil masses experience during the strong ground shaking induced by large earthquakes. The results from the upgraded soil testing apparatus provide the basis for improvements in earthquake hazard mitigation.