Long-term effect of soil settlement on lateral dynamic responses of end-bearing friction pile

IF 4.2 2区工程技术 Q1 ENGINEERING, GEOLOGICAL Soil Dynamics and Earthquake Engineering Pub Date : 2024-10-16 DOI:10.1016/j.soildyn.2024.109041

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Abstract

This paper presents a closed-form solution to evaluate the lateral dynamic responses of pile foundation adjacent to superficial surcharge. The equilibrium equation of soil is analyzed using continuum solutions, and the Euler-Bernoulli beam theory is employed to model the pile. The consolidation settlement of surrounding soil induced by the superficial surcharge is determined by Terzaghi's consolidation theory. The lateral soil resistance is formulated using potential functions, and the dynamic responses of the end-bearing friction pile are subsequently obtained by considering the vertical load and skin friction. Our results are compared with analytical approaches from previous literature to validate the effectiveness of the present solution. The evolutions of lateral dynamic responses of pile foundation are systematically analyzed. It is suggested that the superficial surcharge influences the distribution of skin friction of the pile foundation, thereby altering its lateral dynamic responses. This phenomenon does not manifest immediately but demonstrates significant long-term effects during the consolidation settlement of surrounding soil.

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土壤沉降对端承式摩擦桩侧向动力响应的长期影响

本文提出了一种闭式求解方法，用于评估邻近表层附加荷载的桩基侧向动力响应。土的平衡方程采用连续解进行分析，桩的模型采用欧拉-伯努利梁理论。表层附加荷载引起的周围土壤固结沉降由 Terzaghi 的固结理论确定。侧向土体阻力采用势函数计算，随后通过考虑垂直荷载和表皮摩擦力得出端承摩擦桩的动态响应。我们的结果与之前文献中的分析方法进行了比较，以验证本解决方案的有效性。系统分析了桩基横向动力响应的演变。研究表明，表层附加荷载会影响桩基表层摩擦力的分布，从而改变桩基的侧向动力响应。这种现象不会立即显现，但在周围土壤固结沉降过程中会产生显著的长期影响。

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来源期刊

Soil Dynamics and Earthquake Engineering 工程技术-地球科学综合

CiteScore

7.50

自引率

15.00%

发文量

446

审稿时长

8 months

期刊介绍： The journal aims to encourage and enhance the role of mechanics and other disciplines as they relate to earthquake engineering by providing opportunities for the publication of the work of applied mathematicians, engineers and other applied scientists involved in solving problems closely related to the field of earthquake engineering and geotechnical earthquake engineering. Emphasis is placed on new concepts and techniques, but case histories will also be published if they enhance the presentation and understanding of new technical concepts.