Theoretical study and application of pile foundation bearing capacity of broken bedrock building

YUAN Jianfei; WANG Kunyi; LI Shengqun; ZHANG Jianwei; LI Lianxiang; GUO Rui

doi:10.20265/j.cnki.issn.1007-2993.2025-0244

Volume 40 Issue 5

Oct. 2026

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Article Navigation > GEOTECHNICAL ENGINEERING TECHNIQUE > 2026 > 40(5): 693-702

YUAN Jianfei, WANG Kunyi, LI Shengqun, ZHANG Jianwei, LI Lianxiang, GUO Rui. Theoretical study and application of pile foundation bearing capacity of broken bedrock building[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(5): 693-702. doi: 10.20265/j.cnki.issn.1007-2993.2025-0244

Citation:

YUAN Jianfei, WANG Kunyi, LI Shengqun, ZHANG Jianwei, LI Lianxiang, GUO Rui. Theoretical study and application of pile foundation bearing capacity of broken bedrock building[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(5): 693-702. doi: 10.20265/j.cnki.issn.1007-2993.2025-0244

Citation:

YUAN Jianfei, WANG Kunyi, LI Shengqun, ZHANG Jianwei, LI Lianxiang, GUO Rui. Theoretical study and application of pile foundation bearing capacity of broken bedrock building[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2026, 40(5): 693-702. doi: 10.20265/j.cnki.issn.1007-2993.2025-0244

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Theoretical study and application of pile foundation bearing capacity of broken bedrock building

doi: 10.20265/j.cnki.issn.1007-2993.2025-0244

YUAN Jianfei^1
,,
WANG Kunyi²,
LI Shengqun^{3, 4},
ZHANG Jianwei⁵,
LI Lianxiang^{3, 4, 6},
GUO Rui^{3, 4
,}

1.
China Railway First Group Fifth Engineering Co., Ltd., Baoji 712100, Shaanxi, China
2.
China Railway 17th Bureau Group First Engineering Co., Ltd., Qingdao 030006, Shandong, China
3.
School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, Shandong, China
4.
Foundation Pit and Deep Foundation Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
5.
Shandong Railway Transit Survey and Design Institute Co., Ltd., Jinan 250014, Shandong, China
6.
Shandong High-Speed Geotechnical Engineering Co., Ltd., Jinan 250102, Shandong, China

Received Date: 2025-06-04
Accepted Date: 2025-06-24
Rev Recd Date: 2025-06-19

Available Online: 2026-10-08

Publish Date: 2026-10-08

Abstract

Abstract

In order to solve the problem of designing embedded piles in fractured bedrock areas, the bearing capacity calculation methods, calculation parameters and application scope of embedded piles used in two domestic codes are analysed. According to the “Code for Design of Foundation and Subgrade of Highway Bridges and Culvert”, the approach to accounting for the bearing capacity factors of end and side resistance of piles considering rock integrity, the method of calculating the bearing capacity of embedded piles with broken bedrock is modified to obtain a method suitable for broken bedrock building. The Mohr-Coulomb parameter based on the modified Hoek-Brown criterion is used to carry out finite element simulations to obtain the ultimate bearing capacity of monopiles with fractured bedrock embedded piles, and to model pile raft foundations with different degrees of integrity and analyse their bearing capacity and monopile bearing properties. The results show that the modified bearing capacity calculation method is scientific and the fractured bedrock still has good bearing capacity as the bearing layer of group pile foundation. The results are applied to the optimal design of pile foundation for a super high-rise project in the fractured bedrock area of Jinan, and the relevant results can be used as reference for similar projects.
- broken bedrock,
- rock-socketed pile,
- load-bearing properties,
- pile foundation optimization

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References(27)

References

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Theoretical study and application of pile foundation bearing capacity of broken bedrock building

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