Diaphragm Wall Deformation Behavior and Inclinometer Data Analysis for Braced Deep Excavations
Publication: International Journal of Geomechanics
Volume 24, Issue 6
Abstract
Concrete diaphragm walls (CDWs) are widely used as support for deep excavations in saturated soft soils with sensitive construction environments. The lateral deformation of the CDWs is typically measured by inclinometers cast in the wall. This paper discusses the evolution of the lateral deformation of the CDWs during deep excavation and the main sources of errors in inclinometer measurements. Furthermore, a correction method for the most influential errors is proposed. It is found that the multilevel supported CDWs generally experience three types of deformations during the excavation: cantilever, transition, and bulging. Accordingly, the joint error correction method for inclinometer readings can be operated efficiently to reprocess the monitored data, using total station measurement as a cross-reference. Based on the case studies of deep excavation projects located in Suzhou, China, the proposed error correction method has been demonstrated to perform satisfactorily and can assist in guiding key safety control decisions on construction sites.
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Data Availability Statement
All data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research described in this paper was supported by the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (21KJB560018) and the Postgraduate Research & Practice Innovation Program of Jiangsu Province (5832004422).
References
Bolton, M., W. Powrie, and I. Symons. 1990. “The design of stiff in situ walls retaining overconsolidated clay part 1: Short term behaviour.” Ground Eng. 23 (1): 34–39.
Chen, J.-J., H. Lei, and J.-H. Wang. 2014. “Numerical analysis of the installation effect of diaphragm walls in saturated soft clay.” Acta Geotech. 9: 981–991. https://doi.org/10.1007/s11440-013-0284-x.
Clough, G., P. Weber, and J. Lamont. 1972. “Design and observation of a tied-back wall.” In Performance of earth and earth-supported structures. Reston, VA: ASCE.
Clough, G. W., and T. D. O’Rourke. 1990. “Construction induced movements of in situ walls.” In Vol. 25 of Design and performance of earth retaining structures, edited by P. C. Lambe and L. A. Hansen, 439–470. Reston, VA: ASCE.
Cornforth, D. 2005. Landslides in practice: Investigation, analysis, and remedial/preventative options in soils. New York: Wiley.
Dunnicliff, J. 1993. Geotechnical instrumentation for monitoring field performance. New York: Wiley.
Ganjalipour, K. 2021. “Review of inclinometer errors and provide correction methods for bias shift error and depth position error of the probe.” Geotech. Geol. Eng. 39 (6): 4017–4034. https://doi.org/10.1007/s10706-021-01743-w.
Green, G. E., and P. E. Mikkelsen. 1988. “Deformation measurements with inclinometers.” In Transportation research record 1169. Washington, DC: Transportation Research Board Publications.
Guowei, L. I., H. U. Longsheng, and W. A. Run. 2013. “Testing of slip inclinometer and error treatment methods.” [In Chinese.] J. Hohai Univ. 41 (6): 511–517.
Han, J., J. Wang, D. Jia, F. Yan, Y. Zhao, X. Bai, N. Yan, G. Yang, and D. Liu. 2023. “Construction technologies and mechanical effects of the pipe-jacking crossing anchor-cable group in soft stratum.” Front. Earth Sci. 10. https://doi.org/10.3389/feart.2022.1019801.
Hou, Y. M., J. H. Wang, and L. L. Zhang. 2009. “Finite-element modeling of a complex deep excavation in Shanghai.” Acta Geotech. 4: 7–16. https://doi.org/10.1007/s11440-008-0062-3.
Jeng, C.-J., Y.-Y. Yo, and K.-L. Zhong. 2017. “Interpretation of slope displacement obtained from inclinometers and simulation of calibration tests.” Natural Hazards 87: 623–657. https://doi.org/10.1007/s11069-017-2786-6.
Lam, S. Y., and M. D. Bolton. 2011. “Energy conservation as a principle underlying mobilizable strength design for deep excavations.” J. Geotech. Geoenviron. Eng. 137 (11): 1062–1074. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000510.
Li, M.-G., X. Xiao, J.-H. Wang, and J.-J. Chen. 2019. “Numerical study on responses of an existing metro line to staged deep excavations.” Tunnelling Underground Space Technol. 85: 268–281. https://doi.org/10.1016/j.tust.2018.12.005.
Li, T., W. Zhao, R. Liu, J. Han, P. Jia, and C. Cheng. 2024. “Visualized direct shear test of the interface between gravelly sand and concrete pipe.” Can. Geotech. J. 61: 361–374. https://doi.org/10.1139/cgj-2022-0007.
Liao, R. 1999. Hillside slope protection engineering design. [In Chinese.] Taipei: Taiwan Professional Civil Engineering Association.
Liu, W., P. Shi, H. Li, and F. Wang. 2019. “Observed performance of three adjacent 48 m depth concrete diaphragm wall panels in silty soils.” Can. Geotech. J. 56 (11): 1736–1742. https://doi.org/10.1139/cgj-2017-0676.
Mana, A. I., and G. W. Clough. 1981. “Prediction of movements for braced cuts in clay.” J. Geotech. Eng. Div. 107 (6): 759–777. https://doi.org/10.1061/AJGEB6.0001150.
Mikkelsen, P., and E. DiBiagio. 2015. “Depth position errors in inclinometer surveys and false displacement results.” In Proc., 9th Symp. on Field Measurements in Geomechanics, 117–123. Perth, WA: Australian Centre for Geomechanics.
Mikkelsen, P., and S. Wilson. 1984. “Field instrumentation: Accuracy, performance, automation and procurement.” In Proc., Int. Symp. Field Measurements in Geomechanics, 251–272. Rotterdam, The Netherlands: A.A. Balkema.
Mikkelsen, P. E. 2003. “Advances in inclinometer data analysis.” In Proc., Int. Symp. Field Measurements in Geomechanics. Boca Raton, FL: CRC Press.
O’Rourke, T. 1993. “Base stability and ground movement prediction for excavations in soft clay.” In Retaining structures, edited by C. R. I. Clayton, 657–686. London: Thomas Telford.
Osman, A. S., and M. D. Bolton. 2004. “A new design method for retaining walls in clay.” Can. Geotech. J. 41 (3): 451–466. https://doi.org/10.1139/t04-003.
Osman, A. S., and M. D. Bolton. 2006. “Ground movement predictions for braced excavations in undrained clay.” J. Geotech. Geoenviron. Eng. 132 (4): 465–477. https://doi.org/10.1061/(ASCE)1090-0241(2006)132:4(465).
Slope Indicator. 2005. “Citing online sources.” Accessed January 8, 2023. http://www.slopeindicator.com/.
Stark, T. D., and H. Choi. 2008. “Slope inclinometers for landslides.” Landslides 5: 339–350. https://doi.org/10.1007/s10346-008-0126-3.
Zhao, H.-J., W. Liu, P.-X. Shi, J.-T. Du, and X.-M. Chen. 2021. “Spatiotemporal deep learning approach on estimation of diaphragm wall deformation induced by excavation.” Acta Geotech. 16 (11): 3631–3645. https://doi.org/10.1007/s11440-021-01264-z.
Zhao, Z. 2021. “Error analysis of an inclinometer based on numerical analysis.” Hydrogeol. Eng. Geol. 48 (3): 157–161.
Zhou, H.-Z., G. Zheng, X.-P. He, E.-Y. Wang, Z.-Y. Guo, D.-Q. Nie, and S.-K. Ma. 2020. “Numerical modelling of retaining structure displacements in multi-bench retained excavations.” Acta Geotech. 15: 2691–2703. https://doi.org/10.1007/s11440-020-00947-3.
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Published In
International Journal of Geomechanics
Volume 24 • Issue 6 • June 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Feb 7, 2023
Accepted: Dec 12, 2023
Published online: Mar 26, 2024
Published in print: Jun 1, 2024
Discussion open until: Aug 26, 2024
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