A novel settlement calculation method and engineering application of strength composite piles

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2026-04-01 Epub Date: 2026-02-04 DOI:10.1016/j.sandf.2026.101749

Heng Liu, Peng Xi, Xihao Yan, Zhengwei Wang, Mingjie Xu, Lei Guo, Ning Zhang

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引用次数: 0

Abstract

As a novel type of pile foundation structure, the strength composite (SC) piles lack a settlement calculation method that accurately reflects the stress diffusion state within the composite soil mass. In this study, based on the multilayer theory, a settlement calculation formula for strength composite (SC) piles is proposed for homogeneous foundations, which accounts for the evolution of the plastic zone in the surrounding soil. This method is then extended to the settlement calculation of SC piles in layered foundations encountered in practical engineering. A corresponding calculation program is also developed. Through comparison with static load tests, recommendations are provided for the form of the soil modulus distribution around the pile and the value of the soil disturbance radius. Finally, the proposed method is applied to case studies of typical engineering sites. The results show that the calculated values agree well with the measured values in both trend and magnitude, reflecting the nonlinear bearing characteristics of the SC pile. The proposed method demonstrates broad applicability and satisfactory engineering accuracy.

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一种新型强度复合桩沉降计算方法及工程应用

强度复合桩作为一种新型的桩基础结构，缺乏一种能够准确反映复合土体内部应力扩散状态的沉降计算方法。本文基于多层理论，提出了考虑周围土体塑性区演化的均质地基强度复合桩沉降计算公式。将该方法推广到实际工程中遇到的层状地基中SC桩的沉降计算中。并编制了相应的计算程序。通过与静载试验的比较，对桩周土体模量分布形式和土体扰动半径取值提出了建议。最后，将该方法应用于典型工程现场的实例研究。结果表明，计算值与实测值在趋势和幅度上都吻合较好，反映了SC桩的非线性承载特性。该方法具有广泛的适用性和较好的工程精度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.