Numerical Analysis of Grouting Reinforcement Effects on Deep Foundation Pits Adjacent to Elevated Railways

Guofei Zhu, Xianlong Wu (), Xuhui Li, Le Chang, Yongjie Li, Chuang Lv, Rui Wang and Yingpeng Li
Additional contact information
Guofei Zhu: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Xianlong Wu: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Xuhui Li: Shenzhen Raw Water Co., Ltd., Shenzhen 518000, China
Le Chang: Sinohydro Bureau 14 Co., Ltd., Kunming 650041, China
Yongjie Li: Shenzhen Raw Water Co., Ltd., Shenzhen 518000, China
Chuang Lv: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Rui Wang: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
Yingpeng Li: College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China

Sustainability, 2024, vol. 16, issue 22, 1-14

Abstract: To mitigate the impact of foundation pit construction on adjacent existing structures, grouting reinforcement techniques are often employed to enhance the deformation strength of the soil. This study focuses on the expansion project of the Dayun Comprehensive Hub in Shenzhen, conducting full-scale numerical simulations of the excavation of deep foundation pits adjacent to existing elevated railways and examining the effects of different grouting reinforcement schemes. The results indicate that the single-row and double-row grouting schemes increased the bearing capacity of the foundation piles by 23.7% and 31.9%, respectively, significantly enhancing the structural bearing performance. After reinforcement, the maximum deformation position of the elevated bridge foundation piles shifted upward, and the settlement distribution of the cap beam became more concentrated, indicating that grouting reinforcement effectively controlled the ground settlement and the deformation of the foundation piles. Furthermore, compared to controlling the deformation of the retaining structures, grouting reinforcement was more effective in controlling ground settlement and pile deformation, highlighting its advantages in complex environments. Although the double-row grouting scheme demonstrated superior technical performance, the single-row scheme remains the preferred option considering reinforcement efficiency and economic factors.

Keywords: foundation pit; elevated station; grouting reinforcement; foundation pile (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/16/22/9984/pdf (application/pdf)
https://www.mdpi.com/2071-1050/16/22/9984/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:16:y:2024:i:22:p:9984-:d:1522004

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().