Author(s)

XiaoXia Zhao^1,2, ZhiCheng Bai^1,2*, Tao Kong^1,2, MinJian Long^1,2, Bing Yang^1,2

Affiliation(s)

¹China Construction Fourth Engineering Bureau Co., Ltd. Guangzhou 510000, Guangdong, China.

²China Construction Fourth Engineering Bureau Sixth Construction Co., Ltd. Hefei 230000, Anhui, China.

Corresponding Author

ZhiCheng Bai

ABSTRACT

With the continuous deepening of the development and utilization of urban underground space, how to carry out deep foundation pit construction next to the subway while ensuring the safety of subway operation has become a major challenge in the engineering field. Taking the Hangzhou Convention and Exhibition Center project as an example, this study explores the safety control of long and deep foundation pit construction next to the subway through micro-disturbance pre-control technology under high-density rail transit environment. This paper first analyzes the geological conditions and construction environment of the project, then constructs an empirical prediction function that affects tunnel deformation, and proposes the foundation pit support control concept of "early isolation, strong block division, soft pit division". Based on three-dimensional finite element analysis, the effectiveness of the proposed technology is verified, providing a theoretical basis and practical guidance for similar projects.

KEYWORDS

Subway side foundation pit; Micro-disturbance pre-control technology; Deformation control; Finite element analysis; Hangzhou convention and exhibition center

CITE THIS PAPER

XiaoXia Zhao, ZhiCheng Bai, Tao Kong, MinJian Long, Bing Yang. Research on micro-disturbance pre-control technology for subway side foundation pit. World Journal of Engineering Research. 2024, 2(2): 28-35. DOI: https://doi.org/10.61784/wjer3004.

REFERENCES

[1] Zhang Jiantao, Yao Aijun, Guo Haifeng, et al. Analysis of the influence of unloading and loading of adjacent foundation pit on existing soft soil shield tunnel. Tunnel Construction, 2016, 36(11): 1348-1355.

[2] Yuan Zhao. The influence of deep foundation pit on adjacent subway stations and shield tunnels. Journal of Zhejiang Institute of Water Resources and Hydropower, 2017, 29(02): 53-60.

[3] Huang Pei, Chen Hua, Zhang Qian. The influence of large foundation pit zoning excavation on adjacent subways. Engineering Investigation, 2015, 43(08): 15-20.

[4] Zhang Jiao, Wang Weidong, Li Jing, et al. Three-dimensional finite element analysis of the influence of zoned construction pit on the deformation of adjacent tunnels. Building Structure, 2017, 47(02): 90-95. DOI:10.19701/j.jzjg.2017.02.017.

[5] Qiu Peiyun, Qi Yuliang, Chen Shuaiguang. Analysis of the influence of the foundation pit construction of a subway station in Guangzhou on the adjacent existing subway stations and tunnels. Guangdong Civil Engineering and Architecture, 2018, 25(03): 47-49+70.

[6] Wang Weidong, Shen Jian, Weng Qiping, et al. Analysis and countermeasures of the influence of foundation pit engineering on adjacent subway tunnels .Chinese Journal of Geotechnical Engineering, 2006, (S1): 1340-1345.

[7] Wang Lifeng, Pang Jin, Xu Yunfu, et al. Study on the influence of foundation pit excavation on adjacent operating subway tunnels. Rock and Soil Mechanics, 2016, 37(07): 2004-2010. DOI: 10.16285/j.rsm.2016.07.022.

[8] Jiang Hongsheng, Hou Xueyuan. The influence of foundation pit excavation on adjacent soft soil subway tunnels. Industrial Construction, 2002, (05): 53-56.

[9] Xiao Tonggang. Effect of foundation pit excavation construction monitoring on adjacent subway tunnels Analysis of the influence of foundation pit construction on the deformation of operating subway tunnels. Chinese Journal of Underground Space and Engineering, 2011, 7(05): 1013-1017.

[10] Gao Guangyun, Gao Meng, Yang Chengbin, et al. Study on the influence and control of foundation pit construction on the deformation of operating subway tunnels. Chinese Journal of Geotechnical Engineering, 2010, 32(03): 453-459.

[11] Ma Qiang. Design and practice of deep foundation pit engineering adjacent to subway tunnels. Green and Environmentally Friendly Building Materials, 2018, (04): 85. DOI:10.16767/j.cnki.10-1213/tu.2018.04.07 4.

[12] Yan Jingya. A brief discussion on the design and construction of deep foundation pits adjacent to operating subway tunnels. Chinese Journal of Geotechnical Engineering, 2010, 32(S1): 234-237.

[13] Liu Xiong. Analysis of deep foundation pit excavation adjacent to subway tunnels. Fujian Building Materials, 2021, (08): 59-61.

[14] Yin Yingzi, Liu Bin. Monitoring and analysis of deep foundation pit excavation adjacent to existing subway tunnels. Construction Technology, 2016, 47(09): 85-787. DOI:10.13731/j.issn.1000-4726.2016 .09.004.

[15] Kuang Longchuan. Impact of deep foundation pit construction on subway tunnels. Chinese Journal of Geotechnical Engineering, 2000, (03): 284-288.

[16] Dai Bohong. Prediction of the impact of deep foundation pit construction on adjacent subway tunnels. Urban Rail Transit Research, 2008, (08): 62-65.

[17] Xue Yongshen, Huang Yulin. Zoning construction technology of deep and large foundation pits in soft soil under complex environment. Shanghai Construction Technology, 2014, (01): 36-39.

[18] Wang Hang. Analysis of the impact of adjacent construction of building foundation pits on subway shield tunnels . China Standardization, 2017, (12): 238-240.

[19] Wang Hang. Analysis of the influence of foundation pit construction on subway shield tunnel section. Geotechnical Foundation, 2019, 33(01): 19-22.

[20] Huang Xun, Shi Li, Jin Lei, et al. Influence of long strip foundation pit construction on soft soil foundation on deformation of existing adjacent tunnels. Journal of Zhejiang University of Technology, 2020, 48(03): 261-268+299.

[21] Zheng Gang, Du Yiming, Diao Yu, et al. Study on the influence zone of deformation of adjacent existing tunnels caused by foundation pit excavation. Geotechnical Engineering Journal of Zhejiang University, 2016, 38(04): 599-612.

[22] Wen Zhongyi, Zhang Lijuan, Chen Song, et al. Study on the influence of foundation pit support structure deformation on adjacent subway tunnels. Roadbed Engineering, 2014, (05): 144-148. DOI: 10.13379/j.issn.1003-8825.2014.05.31.

[23] Chen Renpeng, Meng Fanyan, Li Zhongchao, et al. Excessive displacement of subway tunnels adjacent to deep foundation pits and protection measures. Journal of Zhejiang University (Engineering Science), 2016, 50(05): 856-863.