Effect of Consolidation on Lateral Deformations During Staged Construction

分段施工过程中固结对横向变形的影响

• 批准号: 9312418
• 负责人: Charles Ladd
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9312418&HistoricalAwards=false
• 关键词: Effect; Consolidation; Lateral; Deformations; During

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.

拟议的研究将调查>有效应力>有限元分析是否可以为决定何时可以安全进行分阶段施工提供合理的基础。它将利用巴西塞尔希培港码头 (TPS) 项目的案例来重点关注两个主要问题： 1. 二维固结能否解释横向变形随时间的大幅增加，而不是>不排水>蠕变； 2. 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），还是非常简单的修正凸轮粘土模型就足够了？根据过去使用有效应力模型分析地基问题的经验，该研究被认为>高风险>。