ANALYTICAL APPROACH TO DETERMINE LONGITUDINAL DEFORMATION OF THE EXISTING PRECAST TUNNEL DURING CONSTRUCTION OF A FULL-LENGTH EXCAVATION PIT

Main Article Content

Tam Nguyen Trong
https://orcid.org/0009-0006-1260-0195
Hung Nguyen Van
https://orcid.org/0009-0005-1078-4245

Abstract

In the realm of urban construction employing excavation techniques, safeguarding existing underground structures from detrimental consequences arising from surface construction operations poses a formidable challenge. The reduction of loads due to excavation activities can induce unintended responses, potentially jeopardizing subterranean infrastructure, particularly high-safety-demanding structures like Tunnel Boring Machine (TBM) tunnels. This article introduces an uncomplicated method for ascertaining the axial displacement of TBM tunnels amidst concurrent surface excavation activities. Primarily, the approach entails the identification of stress variations encountered during soil excavation at the tunnel face. Subsequently, employing the solutions derived for the determination of tunnel deformation subjected to concentrated loads, the deformation incurred by the tunnel due to alterations in excavation-induced stress is quantified. The analytical outcomes are meticulously juxtaposed against results generated from a three-dimensional computational model. The comparative analysis demonstrates that the displacement values and axial deviations calculated using the proposed analytical method exhibit only marginal disparities of 4,3% and 1%, respectively, when compared to those obtained through finite element analysis. This study underscores the efficient predictive capabilities of the analytical method in assessing tunnel deformations, enabling a preliminary estimation of critical parameters associated with the excavation pit. These findings have significant implications for mitigating adverse impacts on existing subterranean infrastructure in densely populated urban areas.

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How to Cite
Nguyen Trong, T., & Nguyen Van, H. (2024). ANALYTICAL APPROACH TO DETERMINE LONGITUDINAL DEFORMATION OF THE EXISTING PRECAST TUNNEL DURING CONSTRUCTION OF A FULL-LENGTH EXCAVATION PIT. International Journal for Computational Civil and Structural Engineering, 20(1), 46-56. https://doi.org/10.22337/2587-9618-2024-20-1-46-56
Section
Articles

References

Chang C.T., Sun C.W., Duann S.W., Hwang R.N. (2001). Response of a Taipei rapid transit system (TRTS) tunnel to adjacent excavation. Tunnelling and underground space technology, pp. 151-158.

Yang Z., Wang X. (2020). Influence of metro tunnel excavation on deformation of existing pedestrian underpass in changzhou railway station platform. IEEE Access, 2981343.

Charles W.W.Ng., Jiangwei S., Hong Y. (2013). Three-dimensional centrifuge modelling of basement excavation effects on an existing tunnel in dry sand. Can. Geotech. J. 50, pp. 874-888.

Huang H., Huang X., Zhang, D. (2014). Centrifuge modelling of deep excavation over existing tunnels. Proc. ICE- Geotech Eng, 167.

Hung N.V., Tam N.T. (2022). Impact of the underground culvert construction process with different construction segments on the existing tunnel. Transportation magazine, 63, pp. 30-34.

Lou P., Li Y., Lu S., Xiao H., Zhang Z. (2022). Deformation and mechanical characteristics of existing foundation pit and tunnel itself caused by shield tunnel undercrossing. Symmetry, 14020263.

Tam N.T., Hung N.V., Bac N.V., Tuan, N.A. (2023). Deformation analysis of existing tunnel using finite element method during construction of a full-length excavation pit. Journal of Transportation Science and Technology, 12, pp. 1-9.

Tao X., Luan P., Ma J., Song W. (2022). Influence of sublevel unloading excavation with deep consideration of the Superposition effect on deformation of an existing tunnel under an intelligent geotechnical concept. Wireless communications and mobile computing, 1400114.

Zhao X., Li Z., Dai G., Wang H., Yin, Z., Cao, S. (2022). Numerical study on the effect of large deep foundation excavation on underlying complex intersecting tunnels. Appl. Sci., 12, 4530.

Liu J., Shi C., Lei M., Cao C., Lin Y. (2020). Improved analysis method for evaluating the responses of shield tunnel to adjacent excavations and its application. Tunnelling and underground space technology, 98, 103339.

Zhang Z., Huang M., Wang W. (2013). Evaluation of deformation response for adjacent tunnels due to soil unloading in excavation engineering. Tunnelling and Underground space technology, pp. 244-253.

Zhuang, X., Ou X., Fu, J. (2017). Deformation response of an existing tunnel to upper excavation of foundation pit and associated dewatering. International journal of Geomechanics, 04016112.

Verruijt A. (2009). An introduction to soil dynamics. Delft university of technology.

Liao S.M., Peng F.L., Shen S. L. (2008). Analysis of shearing effect on tunnel induced by load transfer along longitudinal derection. Tunnelling and underground space technology, 23, pp. 421-430.

Attewell P.B., Yeates J., Selby A.R. (1987). Soil movements induced by tunnelling and their effects on pipelines and structures. Tunnelling and underground space technology, 2, 102.

Yu J., Zhang C.R., Huang M.S. (2005). Soil – pile interaction due to tunnelling: comparision between Winkler and elastic continuum solutions. Geotechnique ,55, pp. 461-466.

СПИСОК ЛИТЕРАТУРЫ

Chang C.T., Sun C.W., Duann S.W., Hwang R.N. (2001). Response of a Taipei rapid transit system (TRTS) tunnel to adjacent excavation. Tunnelling and underground space technology, pp. 151-158. DOI: https://doi.org/10.1016/S0886-7798(01)00049-9

Yang Z., Wang X. (2020). Influence of metro tunnel excavation on deformation of existing pedestrian underpass in changzhou railway station platform. IEEE Access, 2981343. DOI: https://doi.org/10.1109/ACCESS.2020.2981343

Charles W.W.Ng., Jiangwei S., Hong Y. (2013). Three-dimensional centrifuge modelling of basement excavation effects on an existing tunnel in dry sand. Can. Geotech. J. 50, pp. 874-888. DOI: https://doi.org/10.1139/cgj-2012-0423

Huang H., Huang X., Zhang, D. (2014). Centrifuge modelling of deep excavation over existing tunnels. Proc. ICE- Geotech Eng, 167. DOI: https://doi.org/10.1680/geng.11.00045

Hung N.V., Tam N.T. (2022). Impact of the underground culvert construction process with different construction segments on the existing tunnel. Transportation magazine, 63, pp. 30-34.

Lou P., Li Y., Lu S., Xiao H., Zhang Z. (2022). Deformation and mechanical characteristics of existing foundation pit and tunnel itself caused by shield tunnel undercrossing. Symmetry, 14020263. DOI: https://doi.org/10.3390/sym14020263

Tam N.T., Hung N.V., Bac N.V., Tuan, N.A. (2023). Deformation analysis of existing tunnel using finite element method during construction of a full-length excavation pit. Journal of Transportation Science and Technology, 12, pp. 1-9. DOI: https://doi.org/10.55228/JTST.12(1).1-9

Tao X., Luan P., Ma J., Song W. (2022). Influence of sublevel unloading excavation with deep consideration of the Superposition effect on deformation of an existing tunnel under an intelligent geotechnical concept. Wireless communications and mobile computing, 1400114. DOI: https://doi.org/10.1155/2022/1400114

Zhao X., Li Z., Dai G., Wang H., Yin, Z., Cao, S. (2022). Numerical study on the effect of large deep foundation excavation on underlying complex intersecting tunnels. Appl. Sci., 12, 4530. DOI: https://doi.org/10.3390/app12094530

Liu J., Shi C., Lei M., Cao C., Lin Y. (2020). Improved analysis method for evaluating the responses of shield tunnel to adjacent excavations and its application. Tunnelling and underground space technology, 98, 103339. DOI: https://doi.org/10.1016/j.tust.2020.103339

Zhang Z., Huang M., Wang W. (2013). Evaluation of deformation response for adjacent tunnels due to soil unloading in excavation engineering. Tunnelling and Underground space technology, pp. 244-253. DOI: https://doi.org/10.1016/j.tust.2013.07.002

Zhuang, X., Ou X., Fu, J. (2017). Deformation response of an existing tunnel to upper excavation of foundation pit and associated dewatering. International journal of Geomechanics, 04016112. DOI: https://doi.org/10.1061/(ASCE)GM.1943-5622.0000814

Verruijt A. (2009). An introduction to soil dynamics. Delft university of technology. DOI: https://doi.org/10.1007/978-90-481-3441-0

Liao S.M., Peng F.L., Shen S. L. (2008). Analysis of shearing effect on tunnel induced by load transfer along longitudinal derection. Tunnelling and underground space technology, 23, pp. 421-430. DOI: https://doi.org/10.1016/j.tust.2007.07.001

Attewell P.B., Yeates J., Selby A.R. (1987). Soil movements induced by tunnelling and their effects on pipelines and structures. Tunnelling and underground space technology, 2, 102. DOI: https://doi.org/10.1016/0886-7798(87)90195-7

Yu J., Zhang C.R., Huang M.S. (2005). Soil – pile interaction due to tunnelling: comparision between Winkler and elastic continuum solutions. Geotechnique ,55, pp. 461-466. DOI: https://doi.org/10.1680/geot.2005.55.6.461

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