Design, construction and analysis for super-wide, deep and large foundation pit

  • Shenjie Shi

    School of Rail Transportation, Soochow University, Suzhou, China
  • Angran Tian

    School of Rail Transportation, Soochow University, Suzhou, China
  • Yongsheng Zheng

    China Railway Second Group of The Fourth Engineering Co., Ltd, Suzhou, China
  • Peng Yin

    China Railway Second Group of The Fourth Engineering Co., Ltd, Suzhou, China
  • Weilin Qi

    Suzhou Xiangcheng Communications Construction Inves. Group Co.,Ltd, Suzhou, China
  • Qiang Tang

    School of Rail Transportation, Soochow University, Suzhou, China
    Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, China
Email: tangqiang@suda.edu.cn
Từ khóa: Super-wide foundation pit, design and construction, numerical calculation, retaining structure.

Tóm tắt

Both developing and developed countries are facing a series of difficulties and challenges in the process of urbanization. In recent years, in order to alleviate the problem of urban congestion, underground space has developed rapidly, and the excavation of foundation pit is the most important step in the development of underground space. This paper takes the foundation pit of the tunnel under construction in Suzhou as a research object. The design width of the foundation pit reaches 61.5 m and the depth reaches 18 m, so it belongs to the super wide and deep foundation pit. Numerical analysis is performed by finite element software to calculate the deformation of the foundation pit. The research shows that the main problem to be solved is the deformation of the foundation pit, and the deformation of side wall of foundation pit tunnel is the most obvious. The maximum deformation of the side wall of the main tunnel and the auxiliary tunnel reached the maximum at 15 m. The maximum deformation of the main tunnel is about 1.3 cm, and that of the auxiliary tunnel is about 0.9 cm. Through targeted design and construction, the mechanical performance of the foundation pit retaining structure is optimized, and the stability of the foundation pit is strengthened. The reasonable retaining structure can ensure the good construction quality. The design and construction of the project can provide reference for related engineering construction.

Tài liệu tham khảo

[1]. F. Yang et al., Research on Deep Foundation Pit Excavation Based on Data Monitoring, IOP Conference Series Earth and Environmental, 525 (2020) 12-14. http://doi.org/10.1088/1755-1315/525/1/012014
[2]. Y. Qiu et al., Surface characteristics of crop-residue-derived black carbon and lead(II) adsorption, Water Research, 42 (2008) 567-574. http://doi.org/10.1016/j.watres.2007.07.051
[3]. Q. Zhang, Deformation Analysis of Deep Foundation Pit Excavation Under the Effect of Time and Space, Geotechnical Research, 7 (2020), 146-152. https://doi.org/10.1680/jgere.20.00009
[4]. L. Jinjun et al., Monitoring and Analysis of Foundation Pit Excavation of City Open-cut Tunnel, International Conference on Computing, IEEE Computer Society, 2012.
[5]. W. X-Jun, Participatory geographic information system review, Chinese Journal of Eco-Agriculture 18 (2010) 1138-1144 . https://doi.org/10.3724/SP.J.1011.2010.01138
[6]. Z-bin. Fu et al., Construction of Foundation Pit without Dewatering, Geo-Shanghai, 2014. https://doi/org/ 10.1061/9780784413449.089
[7]. Y. Tan, D. Wang, Characteristics of a Large-Scale Deep Foundation Pit Excavated by the Central-Island Technique in Shanghai Soft Clay, Ⅱ: Top-Down Construction of the Peripheral Rectangular Pit, Journal of geotechnical and geo-environmental engineering, 139 (2013) 1894-1910. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000929
[8]. Y. Li et al., Deformation Behavior of Foundation Pit Considering the Variation of Permeability Coefficient of Soil Mass, 2018. https://doi.org/10.1007/978-981-13-0131-5_41
[9]. X. Zhang et al., Deformation Response of an Existing Tunnel to Upper Excavation of Foundation Pit and Associated Dewatering, International Journal of Geo-mechanics, 17 (2017) 1-14. http://doi.org/10.1061/(ASCE)GM.1943-5622.0000814
[10]. X. Y. Xie, K. W. Zhu, Development of a Three-Dimensional Modeling Method for Monitoring Overall Foundation Pit Deformation Based on Terrestrial Laser Scanning, Applied Mechanics and Materials, 743 (2015) 866-875. https://doi.org/10.4028/www.scientific.net/AMM.743.866
[11]. J. Peek, Deep Excavations and Tuneling in Soft Ground, State of the Reports 3 (2014), 185-202.
[12]. X. Wang et al., Preparation of Macroporous Al2O3 by Template Method, Acta Physico-Chimica Sinica, 22 (2006), 831-835. http://doi.org/10.1016/S1872-1508(06)60035-1
[13]. W. X-Jun, The Influence of foundation pit excavation on adjacent metro deformation, Chinese Journal of Eco-Agriculture, 18 (2010) 1138-1144. http://doi.org/10.3724/SP.J.1011.2010.01138
[14]. L. Jinjun et al., Monitoring and Analysis of Foundation Pit Excavation of City Open-cut Tunnel, International Conference on Computing. IEEE Computer Society, 2012.
[15]. Y. Tan et al., Zoned Excavation of an Oversized Pit Close to an Existing Metro Line in Stiff Clay: Case Study, Journal of Performance of Constructed Facilities, 29 (2015) 1-19. http://doi.org/10.1061/(ASCE)CF.1943-5509.0000652
[16]. H. Liu et al., The Finite Element Analysis of Pile-Anchor Support System in Foundation Pit, 2009 Second International Conference on Information and Computing Science, 2009, pp. 131-134. http://doi.org/10.1109/ICIC.2009.40
[17]. F. Naghibi et al., Probabilistic considerations for the design of deep foundations against excessive differential settlement, Canadian Geotechnical Journal, 53 (2016). http://doi.org/10.1139/cgj-2015-0194
[18]. K. S. Wong, B. B. Broms, Lateral Wall Deflection of Braced Excavation in Clay, Journal of the Geotechnial Engineering, 115 (1989). https://doi.org/10.1061/(ASCE)0733-9410(1989)115:6(853)
[19]. K. S. Wong, B. B. Broms, Lateral Wall Deflection of Braced Excavation in Clay, Journal of the Geotechnial Engineering, 115 (1989). http://doi.org/10.1061/(ASCE)0733-9410(1989)115:6(853)
[20]. C. Mahrenholtz, R. Eligehausen, Simulation of Tests on Cast-In and Postinstalled Column-to-Foundation Connections to Quantify the Effect of Cyclic Loading, Journal of Structural Engineering, 142 (2016), 1-10. http://doi.org/10.1061/(ASCE)ST.1943-541X.0001330
[21]. J. Wei et al., The Finite Element Analysis of Highway Unilateral Widened Deformation Characteristics on Soft Soil Ground, Advanced Science Letters, 6 (2012) 337-341. http://doi.org/10.1166/asl.2012.2257
[22]. J. Zhang, Finite Element Analysis of Ultra-deep Foundation Pit Covered Top-Down Excavation Based on PLAXIS, IOP Conference Series: Earth and Environmental Science, 300 (2019) 022158. http://doi.org/10.1088/1755-1315/300/2/022158
[23]. D’A. Hayman, Unesco Symposium on Technology and Artistic Creation in the Contemporary World, JOURNAL ARTICLE, 1 (1968) 441-444. http://doi.org/10.2307/1571996
[24]. Y. L. Lin et al., Experimental and numerical study on the seismic behavior of anchoring frame beam supporting soil slope on rock mass, Soil Dynamics and Earthquake Engineering, 98 (2017), 12-23. http://doi.org/10.1016/j.soildyn.2017.04.008
[25]. Chuan Q D., Lei W., Wei M W., Tunnel supporting control based on anisotropic constitutive model, Journal of Beijing University of Technology, 38 (2012) 1202-1207.
[26]. Pankaj, N. Bícaníc, Detection of Multiple Active Yield Conditions for Mohr-Coulomb Plasticity, Computers and Structures, 62 (1997) 51-61. https://doi.org/10.1016/S0045-7949(96)00267-2
[27]. S. Sysala et al., Sub-differential based implicit return-mapping operators in Mohr-Coulomb plasticity, Journal of Applied Mathematics & Mechanics, 2017. http://doi.org/10.1002/zamm.201600215
[28]. X. Shi et al., Analysis on Deformation and Stress Characteristics of a Multi-braced Pit-in-Pit Excavation in a Subway Transfer Station, Advances in Civil Engineering, 10 (2020) 1-19. http://doi.org/10.1155/2020/8844461
[29]. I. Sabirov et al., Nanostructured a luminium alloys produced by severe plastic deformation: New horizons in development, Materials Science & Engineering: A, 560 (2013) 1-24. http://doi.org/10.1016/j.msea.2012.09.020
[30]. Z. Chang et al., Effects of the Loading and Unloading Conditions on Crack Propagation in High Composite Slope of Deep Open-Pit Mine, Advances in Civil Engineering, 6 (2019) 11. http://doi.org/10.1155/2019/3168481
[31]. N. Liosis et al., Ground subsidence monitoring with SAR interferometry techniques in the rural area of Al Wagan, UAE, Remote Sensing of Environment, 216 (2018) 276-288. http://doi.org/10.1016/j.rse.2018.07.001
[32]. T. H. Phi, L. A. Strokova, Prediction maps of land subsidence caused by groundwater exploitation in Hanoi, Vietnam, Resource-Efficient Technologies, 1 (2015) 80-89. http://doi.org/10.1016/j.reffit.2015.09.001
[33]. A. M. Suchowerska et al., Geo-mechanics of subsidence above single and multi-seam coal mining, Journal of Rock Mechanics and Geotechnical Engineering, 8 (2016) 304-313. https://doi.org/10.1016/j.jrmge.2015.11.007
[34]. C. Qi et al., Deformation and Stability of Soft Foundation Improved by Prefabricated Vertical Drains Adjacent to River Bank, Advances in Civil Engineering, 10 (2018) 1-7. https://doi.org/10.1155/2018/2948286
[35]. Y. Li et al., Deformation and mechanical characteristics of tunnel lining in tunnel intersection between subway station tunnel and construction tunnel, Tunnel and Underground Space Technology, 56 (2016) 22-33. https://doi.org/10.1016/j.tust.2016.02.016
[36]. H. Zhang et al., A new model to predict soil pressure acting on deep burial jacked pipes, Tunnel and Underground Space Technology, 60 (2016) 183-196. https://doi.org/10.1016/j.tust.2016.09.005
[37]. J. P. Doherty, A numerical study into factors affecting stress and pore pressure in free draining mine stopes, Computers & Geotechnics, 63 (2015) 331-341. https://doi.org/10.1016/j.compgeo.2014.10.001
[38]. M. Patil et al., Behavior of shallow tunnel in soft soil under seismic conditions, Tunnel and Underground Space Technology, 82 (2018) 30-38. https://doi.org/10.1016/j.tust.2018.04.040

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