ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 13 - 2025 | doi: 10.3389/feart.2025.1660606
This article is part of the Research TopicGeological Hazards in Deep Underground Engineering: Mechanism, Monitoring, Warning, and ControlView all 8 articles
Experimental and theoretical analysis for the synchronous-concentric inclined pile composed of steel pipe pile and cemented soil
Provisionally accepted
- 1Ningbo Rail Transit Group Co., Ltd., Ningbo, China
- 2NingboTech University, Ningbo, China
- 3Ningbo Ningda Foundation Treatment Technology Co., Ltd, Ningbo, China
- 4Zhejiang Hongchen Construction Co., Ltd., Ningbo, China
Select one of your emails
You have multiple emails registered with Frontiers:
Notify me on publication
Please enter your email address:
If you already have an account, please login
You don't have a Frontiers account ? You can register here
As a new type of composite pile, the synchronously and concentrically constructed steel pipecemented soil composite pile has been increasingly adopted as an inclined support system in foundation pit engineering. However, theoretical research on the mechanical behavior and calculation methods of this composite pile has lagged behind its practical engineering applications. In this study, a series of laboratory tests were conducted to investigate the interaction between the steel pipe and the surrounding cemented soil. A novel calculation method is proposed for the bearing capacity and deformation behavior of the new composite inclined pile. In this new model, the steel pipe and the inner cemented soil are assumed to have no relative displacement and are treated as a single pile body using an equivalent modulus approach. The surrounding cemented soil primarily undergoes shear deformation, and its interaction with the natural soil is also modeled as ideal elastoplastic. The end resistance-displacement behavior of the cemented soil is described using a hyperbolic relationship. The influence of key parameters on the pile performance was also analyzed. Practical methods for determining the main parameters were provided. The results show that the proposed calculation method agrees well with the engineering measurements, demonstrating its applicability for evaluating the bearing characteristics of this new composite pile type and offering valuable guidance for practical engineering design and implementation.
Keywords: Steel pipe pile, Cemented soil, Load transfer, calculation model, deformation
Received: 06 Jul 2025; Accepted: 11 Aug 2025.
Copyright: © 2025 Ye, Wang, Zhu, Shi, Mao and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Zhong-jin Wang, NingboTech University, Ningbo, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.