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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Design of laterally loaded pile-columns considering SSI effects: Strengths and weaknesses of 3D, 2D, and 1D nonlinear analysis
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Design of laterally loaded pile-columns considering SSI effects: Strengths and weaknesses of 3D, 2D, and 1D nonlinear analysis

机译：考虑SSI效应的横向装载桩柱设计：3D，2D和1D非线性分析的优点和弱点

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摘要

The type of analysis used to design laterally loaded piles or pile-columns seems often selected with criteria related more to the analyst's background than to the type of problem. Most of the time, the adopted approach is not rigorous because the response of the soil-pile system is evaluated without considering the mutual influence that structural inelasticity has on soil plasticity and vice-versa. This article has two main objectives: (i) to underline the role of the structural and soil plasticity within the nonlinear analysis of the soil-pile system as a whole, also highlighting the Soil-Structure-Interaction (SSI) effects, and (ii) to propose a framework for the rational selection of the most suitable approach in relation to the design phase (eg, tender offer, basic design, detailed design). The cast-in-drilled-hole (CIDH) reinforced concrete pile-column system, in which the distinction between structural and geotechnical engineering duties is less obvious, has been selected as a case study. The study compares the results of several approaches, using full-scale experimental data as benchmark. The results have been obtained with different software programs, commonly used by geotechnical and structural engineers. Particular attention has been dedicated to investigate the reliability of the analysis in relation to the level of complexity of the model (eg, 3D, 2D, and 1D).
机译：用于设计横向装载的桩或桩基的分析类型通常选择与分析师的背景相关的标准，而不是问题的背景。大多数时候，采用的方法并不严谨，因为在不考虑结构内弹性对土壤塑性的相互影响和反之亦然的相互影响的情况下，评估了土桩系统的响应。本文有两个主要目标：（i）以强调结构和土壤可塑性在整体土壤桩系统的非线性分析中的作用，还突出了土壤结构 - 相互作用（SSI）效应，并（II ）提出有关设计阶段的合理选择最合适的方法的框架（例如，招标提供，基本设计，详细设计）。钻孔孔（CIDH）钢筋混凝土桩系统，其中结构和岩土工程职责之间的区别不太明显，被选为案例研究。该研究比较了几种方法的结果，使用全规模的实验数据作为基准。通过岩土和结构工程师常用的不同软件程序获得了结果。特别注意旨在调查与模型的复杂程度（例如，3D，2D和1D）相关的分析的可靠性。

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