Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site

DING Liqin; CHEN Liwei; LÜ Tao; YANG Qiuyu; WANG Xuhong

doi:10.20265/j.cnki.issn.1007-2993.2025-0047

Volume 40 Issue 1

Feb. 2026

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DING Liqin, CHEN Liwei, LÜ Tao, YANG Qiuyu, WANG Xuhong. Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(1): 63-74. doi: 10.20265/j.cnki.issn.1007-2993.2025-0047

Citation:

DING Liqin, CHEN Liwei, LÜ Tao, YANG Qiuyu, WANG Xuhong. Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(1): 63-74. doi: 10.20265/j.cnki.issn.1007-2993.2025-0047

Citation:

DING Liqin, CHEN Liwei, LÜ Tao, YANG Qiuyu, WANG Xuhong. Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(1): 63-74. doi: 10.20265/j.cnki.issn.1007-2993.2025-0047

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Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site

doi: 10.20265/j.cnki.issn.1007-2993.2025-0047

China Nuclear Power Engineering Co., Ltd., Beijing 100840, China

Received Date: 2025-02-05
Accepted Date: 2025-04-09
Rev Recd Date: 2025-02-26
Publish Date: 2026-02-06

Abstract

Abstract

Under the current development of nuclear power plants in thick soil area, the application of piles is increasing while the determination and optimization of their horizontal bearing capacity comes to be important issues. A reasonable method was provided to determine the parameters of strain hardening model of soil based on survey data, and the finite element model was established to analyze horizontal bearing piles under nuclear power plants condition. The model was compared with the empirical method suggested by standard to verify its rationality. The impact of various engineering treatment measures on the horizontal bearing capacity of piles was analyzed in detail. The results show that as uniformly arranged, the pile arrangement form has little effect on the horizontal bearing capacity of pile group, while the pile diameter is directly related to this horizontal bearing capacity. Generally compacted soil on the side of the pile cap can increase the horizontal bearing capacity of piles by more than 10%, but the effect of further increasing compaction is not significant. The depth, width, and stiffness of the locally reinforced soil under the pile cap will significantly affect the horizontal bearing capacity of piles, but the width is not necessarily the wider the better. With the pre-consolidation treatment of the upper soft caly layer, the horizontal bearing capacity of the piles can be increased by more than 10%. Besides, by implementing the comprehensive treatment measures above, the horizontal bearing capacity of the piles can be increased by more than 85%. This study can provide a method for predicting and optimizing the horizontal bearing capacity of piles under specific conditions, and the results can provide references for the foundation design at an early stage of various engineering.
- horizontal bearing capacity,
- pile foundation,
- engineering treatments,
- strain hardening,
- nuclear power site

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References

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Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site

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Horizontal bearing capacity of piles and effects of engineering treatments considering strain hardening of soil on thick silt nuclear power site

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