Response, Analysis, and Design of Pile Foundations and Granular-Column Reinforced Shallow Foundations Subjected to Compressive, Uplift, and Lateral Loads

这项SGER（探索性研究小额赠款）奖使主要研究人员能够利用湖城附近15号州际公路正在进行的主要桥梁重建所提供的迫在眉睫的机会。 这项工作的重点是在对一座计划在公路重建中拆除的现有桥梁排架进行全面结构和岩土工程测试期间进行仪器安装和监测。 循环压缩、上拔和横向荷载将施加到现有弯桩帽上，浅基脚将支撑反作用框架。 反应框架基础下方的土壤将用颗粒柱加固。 将试验结果与有限元分析结果进行比较，以验证土工和结构模型以及材料和结构的性能。 这项研究有可能使一个巨大的影响，在国家的最先进的反应，分析和设计的桩和颗粒柱加固地基系统受到循环压缩，上拔和横向荷载。 此外，这项研究有可能作出重要贡献的知识库有关土-结构相互作用的这些相同类型的负载。 这一贡献将是特别重要的，因为很少的工作已经做了全尺寸结构的土-结构相互作用分析，包括从全尺寸测试数据的可用性。

This SGER (Small Grant for Exploratory Research) award enables the principal investigators to take advantage of the imminent opportunity afforded by major bridge reconstruction ongoing in the vicinity of Salt Lake City for Interstate 15. The focus of the work is on instrumentation installation and monitoring during full-scale structural and geotechnical testing of an existing bridge bent that is scheduled to be removed in the highway reconstruction. Cyclic compressive, uplift, and lateral loads will be applied to the existing bent pile caps and the shallow footings will support the reaction frame. The soils beneath the reaction frame footings will be reinforced with granular columns. The results from the tests will be compared with the results from finite element analysis, permitting a validation of the geotechnical and structural model and the behavior of the materials and structures. This research has the potential to make a tremendous impact on the state-of-the-art with respect to the response, analysis, and design of pile and granular-column reinforced foundation systems subjected to cyclic compressive, uplift and lateral loads. In addition, this research has the potential to make an important contribution to the knowledge base regarding soil-structure interaction for these same types of loads. This contribution will be especially significant because little work has been done on soil-structure interaction analyses of full-scale structures, including the availability of data from full-scale testing.