Effect of Consolidation on Lateral Deformations During Staged Construction

拟议的研究将调查&gt；有效应力&gt；有限元分析是否可以为确定何时可以安全地进行分阶段施工提供合理的依据。它将利用巴西塞尔吉奥码头(TPS)项目的案例来关注两个主要问题：1.二维固结能否解释横向变形随着时间的推移而大幅增加，而不是不排水的蠕变；2.是否需要一个非常先进但复杂的粘土行为模型(具有各向异性、屈服面内的非线性等)，或者非常简单的修正凸轮粘土模型就足够了吗？这项研究是基于过去使用有效应力模型分析地基问题的经验而认为是高风险的。

The proposed research will investigate whether or not >effective stress> finite element analyses can provide a rational basis for deciding when staged construction can safely proceed. It will use the case history of the project Terminal Portuario de Sergipe (TPS) in Brazil to focus on two principal questions: 1. can two- dimensional consolidation explain large increases in lateral deformation with time, as opposed to >undrained> creep; and 2. is a very advanced but complex model of clay behavior required (having anisotropy, non-linearity within yield surface, etc.), or will the very simple Modified Cam Clay Model suffice? The research is considered >high risk> based on past experience with using effective stress models to analyze foundation problems.