Nonlinear Analysis of Piles and Pile Groups in Inhomogeneous Soil evaluated through Case Histories

通过案例评估非均质土中的桩和桩群的非线性分析

基本信息

批准号：
1939881
负责人：
金额：
--
依托单位：
University of Bristol
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1939881
关键词：
Nonlinear Analysis Piles Pile Groups

项目摘要

Key to the analysis of pile groups is developing pile-to-pile interaction factors which is achieved by considering only two piles at a time within the group. Superposition is then employed to analyse the effect of all piles in the group on each other. This method acts as an alternative to a detailed numerical analysis in three dimensions that saves significant time and complexity to the design. This PhD will approach the problem from a combined empirical and theoretical basis. First, closed-form solutions will be developed using a variety of special functions of applied mathematics for the nonlinear axial response of single piles and corresponding interaction factors in different inhomogeneous soil profiles leading to "t-z" multipliers. Simplified, approximate solutions will be developed for the general case of inhomogeneous soil and compared against the exact, closed-form solutions. Single pile and pile group response under lateral and torsional loading will also be investigated leading to analogous "p-y" and "t-0" multipliers. Results will then be compared with more rigorous numerical solutions and evaluated against a database of pile load test results gathered from the literature and industry sources. The aim of this project is to minimise uncertainty in pile group analysis to provide cost and carbon savings. This effort is in line with UKCRIC objectives.

分析桩组的关键是开发桩到孔之间的相互作用因子，这些因素是通过一次在组中一次考虑两块桩来实现的。然后，使用叠加来分析该组中所有桩的影响。该方法可以替代三个维度的详细数值分析，从而节省了对设计的大量时间和复杂性。该博士将从合并的经验和理论基础上解决问题。首先，将使用各种应用数学的特殊功能来开发封闭式溶液，以用于单个桩的非线性轴向响应，并在不同的不均匀土壤概况中的相应相互作用因子，导致“ T-Z”乘数。简化，近似溶液将针对不均匀的土壤的一般情况开发，并与确切的封闭式溶液进行比较。在侧向和扭转负荷下的单桩和桩组响应也将进行研究，从而导致类似的“ p-y”和“ t-0”乘数。然后将将结果与更严格的数值解决方案进行比较，并根据从文献和行业来源收集的桩负荷测试结果数据库进行了评估。该项目的目的是最大程度地减少桩组分析中的不确定性，以提供成本和碳的节省。这项工作符合Ukcric目标。