Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)

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Study on Material Utilization of Stepped Pile under Horizontal Load

Authors
Ning Wang1, 2, Renhang Wu1, Yinhong Zhang3, Wentao Hu1, *
1Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering, East China Jiaotong University, Nanchang, 330013, China
2School of Civil Engineering, Central South University of Forestry and Technology, Changsha, 410004, China
3Guangzhou Metro Group Co., Ltd., Guangzhou, 510335, China
*Corresponding author. Email: walter@ecjtu.edu.cn
Corresponding Author
Wentao Hu
Available Online 19 May 2025.
DOI
10.2991/978-94-6463-728-1_30How to use a DOI?
Keywords
Stepped piles; Horizontal bearing capacity; Numerical simulation; Material utilization
Abstract

Compared with traditional uniform piles, stepped piles increase the load transferred to the upper soil layer, which is consistent with the distribution characteristics of the internal force of the pile, which is larger in the upper part and smaller in the lower part. It has been reported that the vertical bearing capacity per volume of stepped piles is higher than that of uniform piles. To investigate the horizontal load-bearing performance per volume of stepped piles, the field test and finite element method are used to analyze the variation law of horizontal bearing capacity and efficiency of material utilization per volume of stepped piles with different expansion ratio and length of enlarged segment. The results indicate that increasing the expansion ratio can significantly improve the horizontal bearing capacity of stepped piles. When the ratio of the length of enlarged segment to the total pile length is less than 25%, increasing the length of the enlarged segment can slightly improve the horizontal bearing capacity of stepped piles. However, increasing the expansion ratio and length of enlarged segment reduces the efficiency of material utilization. Taking the uniform piles as a reference, the efficiency of material utilization of stepped piles is a problem concerning the cross-section optimization of the expansion ratio and the length ratio of the enlarged segment.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
Series
Advances in Engineering Research
Publication Date
19 May 2025
ISBN
978-94-6463-728-1
ISSN
2352-5401
DOI
10.2991/978-94-6463-728-1_30How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Ning Wang
AU  - Renhang Wu
AU  - Yinhong Zhang
AU  - Wentao Hu
PY  - 2025
DA  - 2025/05/19
TI  - Study on Material Utilization of Stepped Pile under Horizontal Load
BT  - Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024)
PB  - Atlantis Press
SP  - 295
EP  - 311
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-728-1_30
DO  - 10.2991/978-94-6463-728-1_30
ID  - Wang2025
ER  -