Development of Analytical and Behavioral Models for Evaluation of Compaction Induced Stresses and Deformations

压实引起的应力及其相关的变形在许多类型的工程土结构和土-结构系统的分析中是非常重要的。它们可以显著影响土压力、土-结构相互作用、水力压裂和分离，以及压实土体的强度和特性。本研究旨在完善和验证最近开发的滞回土加卸载增量有限元分析程序和行为模型，将这些模型和分析程序扩展到考虑粘性土，并为建立对所开发的分析程序至关重要的建模参数奠定可靠的基础。研究将包括实验室测试、行为模型和分析程序的开发和改进，以及实地研究的分析。这项研究将直接解决工程过程中土体的应力变化和相关的时间效应问题，并将利用最新开发的实验室技术进行应力测量。

Compaction-induced stresses, as well as their associated deformations, can be of major importance in analysis of many types of engineered earth structures and soil-structure systems. They can significantly affect earth pressures, soil-structure interaction, hydraulic fracturing and separation, and the strength and behavior of compacted soil masses. This research is intended to refine and verify recently developed incremental finite element analysis procedures and behavioral models for hysteretic soil loading and unloading, extend these models and analytical procedures to consider cohesive soils, and develop a reliable basis for establishing modeling parameters critical to the analytical procedures developed. The research will include laboratory testing, development and refinement of behavioral models and analytical procedures, and analysis of field studies. This research will directly address the issue of the variation of stress and associated time effects for soil masses derived from engineering processes and will utilize the most recently developed laboratory techniques for stress measurements.