Earth pressure distribution and structural response of rectangular pipe jacking in soft clay

LONG Lianbin; HUANG Maosong; SHI Zhenhao; ZHANG Zhongjie; LÜ Peilin

doi:10.11779/CJGE2024S20028

Volume 46 Issue S2

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2024 > 46(S2): 6-10. > DOI: 10.11779/CJGE2024S20028

LONG Lianbin, HUANG Maosong, SHI Zhenhao, ZHANG Zhongjie, LÜ Peilin. Earth pressure distribution and structural response of rectangular pipe jacking in soft clay[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S2): 6-10. DOI: 10.11779/CJGE2024S20028

Citation:

PDF (1994 KB)

Earth pressure distribution and structural response of rectangular pipe jacking in soft clay

LONG Lianbin^{1, 2,},
HUANG Maosong^{1, 2},
SHI Zhenhao^{1, 2, ,},
ZHANG Zhongjie³,
LÜ Peilin³

1.
Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
2.
Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China
3.
Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd., Shanghai 200125, China

More Information

Received Date: June 20, 2024

Graphical Abstract

Abstract

Abstract

The rectangular and quasi-rectangular pipe jackings are increasingly used in the construction of urban underground space structures. Their structural water and soil load distribution characteristics and structural response are particularly important for engineering stability and safety. However, there are few relevant studies. Based on a review of the existing methods for earth pressure of pipe jacking, the vertical earth pressure distribution at the top of rectangular pipe jacking in saturated soft clay and the deformation mode of lateral linings are studied through the finite element simulation, and an improved load model for rectangular pipe jacking that includes non-uniform vertical earth pressure and horizontal soil resistance is proposed. The method is validated by comparing with an overall stratigraphic-structural finite element simulation. The main conclusions are as follows: (1) The earth pressure at the top of pipe is non-uniform, approximately displaying a trapezoidal distribution pattern with smaller pressure at mid-span and higher pressure at both sides. The averaged vertical earth pressure is similar to the full overburden value. (2) The degree of non-uniformity of vertical earth pressure increases with the increase of section size, increase of structural burial depth and decrease of height-to-width ratio, among which the height-to-width ratio has the most significant impact. (3) The height-to-width ratio affects the lateral deformation mode of the pipe jacking structures. The flat pipe jacking deforms laterally outward and squeeze the soil, inducing horizontal soil resistance. (4) The non-uniform distribution of vertical earth pressure and horizontal resistance play an important role in the reasonable calculation of the bending moments at the top and waist of the rectangular pipe jackings in soft clay.
- rectangular pipe jacking,
- soft clay,
- earth pressure distribution,
- structural response

FullText(HTML)

References (10)

References

[1]	潘伟强, 焦伯昌, 柳献. 大断面类矩形钢顶管结构受力性能现场试验研究: 以上海轨道交通14号线静安寺站顶管车站工程为例[J]. 隧道建设(中英文), 2022, 42(6): 975-983. PAN Weiqiang, JIAO Bochang, LIU Xian. Mechanical behaviors of quasi-rectangular steel pipe jacking structure with large cross-section: a case study of Jing'an temple pipe jacking station on Shanghai metro line 14[J]. Tunnel Construction, 2022, 42(6): 975-983. (in Chinese)
[2]	柳献, 焦伯昌, 潘伟强, 等. 大断面钢结构顶管纵向力时变规律研究[J]. 岩土工程学报, 2022, 44(10): 1810-1816. doi: 10.11779/CJGE202210006 LIU Xian, JIAO Bochang, PAN Weiqiang, et al. Temporal variation laws of longitudinal stress of pipe jacking with largesection steel structure[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(10): 1810-1816. (in Chinese) doi: 10.11779/CJGE202210006
[3]	杨仙, 张可能, 黎永索, 等. 深埋顶管顶力理论计算与实测分析[J]. 岩土力学, 2013, 34(3): 757-761. YANG Xian, ZHANG Keneng, LI Yongsuo, et al. Theoretical and experimental analyses of jacking force during deep-buried pipe jacking[J]. Rock and Soil Mechanics, 2013, 34(3): 757-761. (in Chinese)
[4]	林越翔, 彭立敏, 吴桂航, 等. 仿矩形顶管管壁摩阻力理论公式的探讨[J]. 现代隧道技术, 2017, 54(4): 180-185. LIN Yuexiang, PENG Limin, WU Guihang, et al. Discussion of a theoretical formula for the friction resistance of a pipe wall in quasi-rectangular pipe jacking[J]. Modern Tunnelling Technology, 2017, 54(4): 180-185. (in Chinese)
[5]	上海市住房和城乡建设管理委员会. DG/TJ 08-2268-2019 J 14552-2019顶管工程设计标准[S]. 上海: 同济大学出版社, 2019. Shanghai Housing and Urban-Rural Construction Management Committee. DG/TJ 08-2268-2019 J 14552-2019 Construction design code for pipe jacking[S]. Shanghai, Tongji University Press, 2019. (in Chinese)
[6]	上海市住房和城乡建设管理委员会. DG/J 08-11-2018 J 11595-2018地基基础设计标准[S]. 上海: 同济大学出版社, 2019. Shanghai Housing and Urban-Rural Construction Management Committee. DG/J 08-11-2018 J 11595-2018 Foundation design code[S]. Shanghai, Tongji University Press, 2019. (in Chinese)
[7]	CHEN K H, PENG F L. An improved method to calculate the vertical earth pressure for deep shield tunnel in Shanghai soil layers[J]. Tunnelling and Underground Space Technology, 2018, 75: 43-66. doi: 10.1016/j.tust.2018.01.027
[8]	王卫东, 王浩然, 徐中华. 基坑开挖数值分析中土体硬化模型参数的试验研究[J]. 岩土力学, 2012, 33(8): 2283-2290. WANG Weidong, WANG Haoran, XU Zhonghua. Experimental study of parameters of hardening soil model for numerical analysis of excavations of foundation pits[J]. Rock and Soil Mechanics, 2012, 33(8): 2283-2290. (in Chinese)
[9]	SUN W H. Research on the calculation method for vertical earth pressure of shield tunnel in soil layer[J]. Journal of Railway Engineering Society, 2009, 26(10): 69-73.
[10]	林华国, 唐世栋. 上海地区软土层侧向基床反力系数规律性研究[J]. 岩土工程学报, 2004, 26(4): 495-499. http://cge.nhri.cn/article/id/11454 LIN Huaguo, TANG Shidong. Study on the horizontal coefficient of subgrade reaction for soft soil layers in Shanghai[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(4): 495-499. (in Chinese) http://cge.nhri.cn/article/id/11454

[1]	CUI Chunyi, XU Minze, XU Chengshun, ZHAO Jingtong, LIU Hailong, MENG Kun. Seismic fragility analysis of subway station structures considering statistical uncertainty of seismic demands[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(3): 453-462. DOI: 10.11779/CJGE20230980
[2]	ZHANG Chenlong, ZHANG Dongming, HUANG Zhongkai, HUANG Hongwei. Resilience assessment method for subway stations considering uncertainty of seismic intensity[J]. Chinese Journal of Geotechnical Engineering, 2025, 47(1): 164-172. DOI: 10.11779/CJGE20231153
[3]	YAN Changbin, GAO Ziang, YAO Xitong, WANG Hejian, YANG Fengwei, YANG Jihua, LU Gaoming. Weighted random forest prediction model for TBM advance rate considering uncertainty[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(12): 2575-2583. DOI: 10.11779/CJGE20221139
[4]	CAO Zi-jun, ZHENG Shuo, LI Dian-qing, AU Sui-kiu. Probabilistic characterization of underground stratigraphy and its uncertainty based on cone penetration test[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(2): 336-345. DOI: 10.11779/CJGE201802015
[5]	WANG Shuang, CHEN Zheng-zhou, WU Qiang, HUANG Bin-bin, HU Xie-fei. Stability and sensitivity analysis of slopes based on uncertainty of joint orientations[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(2): 348-354.
[6]	Uncertainty of non-linear dynamic shear modular ratio and damping ratio of soils[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(8).
[7]	CHEN Qun, TANG Min, ZHU Fenqing. Influence of uncertainty of strength parameters on instability probability of embankment dam slopes[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(11): 1594-1599.
[8]	CHENG Zhanlin, DING Hongshun. Research on indeterminacy of rockfill test result[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(10): 1222-1225.
[9]	Leng Wuming, Zhao Shanrui. Analysis On the Uncertainties of Soil Properties[J]. Chinese Journal of Geotechnical Engineering, 1995, 17(2): 68-74.
[10]	Feng Xiaoting, Yun Shenyang. An Uncertainty Reasoning Nethod in Expert Systems for Rock Mechanics Problems[J]. Chinese Journal of Geotechnical Engineering, 1994, 16(1): 21-28.