Analysis on the mechanics and deformation of side pile structure in metro station with the PBA method
DOI:
https://doi.org/10.14311/CEJ.2024.01.0010Keywords:
PBA method, side pile structure, mechanical properties, deformation lawAbstract
There are few researches on the interaction mechanism between the buckling load of the side pile top and the soil pressure behind pile (SPP) and the side pile structure. While the side pile structure is the key component of the lining structure of the metro with pile-beam-arch (PBA) method, which plays a very important role in the mechanical stability and deformation control of the lining system of station. Therefore, relying on the metro project about Guangzhou Metro Line 11, this paper investigates the influence law of mechanical characteristics and deformation of the side pile structure of the station with PBA method, taking into account the factors such as different buckling loads (including horizontal load of arch (HLA) and vertical load of arch (VLA)) and SPP, and puts forward corresponding construction suggestions. It is found that the lateral displacement and deformation of side pile structure are controlled by the HLA, and the optimal HLA is 1200kN. The influence of HLA on the bending moments about side pile are greater than that of the axial force. The VLA has more significant effect on vertical settlement of side pile, but little effect on lateral deformation about pile body. The SPP has significant impact on the stability of side pile structure, so it is recommended to take appropriate lining measures to ensure the stability of side pile structure when the SPP is too large.
Downloads
References
Gao, Y.Q., Xiang, Q.M., Su, J.X., et al, 2022. Strata subsidence characteristics of shield tunneling in coastal soft soil area. Stavební Obzor - Civil Engineering Journal, Vol. 31, 625-635. https://doi.org/10.14311/CEJ.2022.04.0047
Li, Y.F., Li, J.L., Zhao, J.H., et al, 2023. Research on a safety evaluation system for railway-tunnel structures by fuzzy comprehensive evaluation theory. Stavební Obzor - Civil Engineering Journal, Vol. 32, 122-136. https://doi.org/10.14311/CEJ.2023.01.0010
Wang, T., Luo, F.R., Liu, W.N., et al, 2012. Study of surface settlement and flexible joint pipeline deformation induced by metro station construction with PBA method. China Civil Engineering Journal, Vol. 45, 155-161. https://doi.org/10.15951/j.tmgcxb.2012.02.005
Liu, Y.S., Huang, Y.Y., 2023. The surface settlement law of precipitation in pile-beam-arch station adjacent to pile foundation. KSCE Journal of Civil Engineering, Vol. 27, 1441-1457. https://doi.org/10.1007/s12205-023-2192-4
Li, C.J., 2022. Research on adaptability of PBA improved construction method for underground station in loess area. Railway Standard Design, Vol. 66, 97-104. https://doi.org/10.13238/j.issn.1004-2954.202102190006
Yu, L., Zhang, D.L., Fang, Q., et al, 2019. Surface settlement of subway station construction using pile-beam-arch approach. Tunnelling and Underground Space Technology, Vol. 90, 340-356. https://doi.org/10.1016/j.tust.2019.05.016
Li, T., Li, Y., Yang, T.Y., et al, 2023. Influence of the large-span pile-beam-arch construction method on the surface deformation of a metro station in the silty clay-pebble composite stratum. Materials, Vol. 16, 2934. https://doi.org/10.3390/ma16072934
Wei, Y.L., Ma, H.L., 2023. Load-bearing deformation characteristics and application of reversed micro steel-pipe pile composite foundation. Journal of Anhui Jianzhu University, Vol. 31, 14-18. https://doi.org/10.11921/j.issn.2095-8382.20230203
Zhang, J.J., Sui, Q.Q., Guo, M., et al., 2023. Analysis and discussion of the load test of manually digging piles of Qingdao Jiaodong International Airport. Mechanics in Engineering, Vol. 45, 765-776. https://doi.org/10.6052/1000-0879-22-573
Guo, Y.C., Lv, C.Y., Hou, S.Q., et al, 2021. Experimental study on the pile-soil synergistic mechanism of composite foundation with rigid long and short piles. Mathematical Problems in Engineering, Vol. 2021, 6657116. https://doi.org/10.1155/2021/6657116
Fu, Q., Li, L., 2021. Vertical load transfer behavior of composite foundation and its responses to adjacent excavation: centrifuge model test. Geotechnical Testing Journal, Vol. 44, 191-204. https://doi.org/10.1520/GTJ20180237
Zhang, D.S., Zhang, X.L., Tang H.T., et al., 2023. Effects of soil arching on behavior of composite pile supporting foundation pit. Computational Particle Mechanics, Vol. 10, 645-662. https://doi.org/10.1007/s40571-022-00518-1
Jin, G.L., Wang, Y., Gu, K.Y., 2012. Influence of constructing hand-dug piles closing to retaining wall. Journal of Shanghai Jiaotong University, Vol. 46, 84-88. https://doi.org/10.16183/j.cnki.jsjtu.2012.01.018
Liang, R.Z., Wei, S., Wang, X.X., et al., 2022. Comparative test and analysis of the deformation in enclosure structure of internally-braced and cantilevered locked steel-pipe pile foundation pits. Modern Tunnelling Technology, Vol. 59, 172-182. https://doi.org/10.13807/j.cnki.mtt.2022.03.020
Chen, Z.Q., Guo, G., Guo, W.X., et al, 2017. Stress characteristics and application of micro steel anti-slide piles. Journal of Lanzhou University, Vol. 53, 43-47. https://doi.org/10.13885/j.issn.0455-2059.2017.01.006
Hazarika, H., Watanabe, N., Sugahara, H., et al, 2017. Influence of placement and configuration of small diameter steel pipe pile on slope reinforcement. 19th International Conference on Soil Mechanics and Geotechnical Engineering, Seoul, Korea.
Xiang, B., Zhang, L.M., Zhou, L.R., et al, 2015. Field lateral load tests on slope-stabilization grouted pipe pile groups. Journal of Geotechnical and Geoenvironmental Engineering, Vol. 141, 04014124. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001220
Kaczmarek, Ł., Dobak, P., Szczepański, T., et al, 2021. Triaxial creep tests of glacitectonically disturbed stiff clay–structural, strength, and slope stability aspects. Open Geosciences, Vol. 13, 1118-1138. https://doi.org/10.1515/geo-2020-0291
He, T.F., 2021. Analysis on deformation of foundation pit retaining structure under the condition of CFG pile composite foundation. Subgrade Engineering, Vol. 218, 186-191. https://doi.org/10.13379/j.issn.1003-8825.20210 3046
An, G.F., Zhang, H.B., Liu, T.J., 2012. Numerical analysis of bearing characteristics of composite subgrade reinforced by chemical churning pile groups. Rock and Soil Mechanics, Vol. 33, 906-912. https://doi.org/10.16285/j.rsm.2012.03.049
Wang, Z., 2018. Research on reinforcement method of loess foundation under existing building. Xi’an University of Architecture and Technology, Master’s thesis, Xi’an.
Liu, S., Guo, P.P., Li, X., et al, 2023. Settlement behavior of composite foundation with deep mixed piles supporting highway subgrades in water-rich flood plains. Water, Vol. 15, 2048. https://doi.org/10.3390/w15112048
Benmebarek, M.A., Benmebarek, S., Rad, M.M., et al, 2022. Pile optimization in slope stabilization by 2D and 3D numerical analyses. International Journal of Geotechnical Engineering, Vol. 16, 211-224. https://doi.org/10.1080/19386362.2021.1972628
Chen, L.J., Jiang, C., Pang, L., et al, 2021. Lateral soil resistance of rigid pile in cohesionless soil on slope. Computers and Geotechnics, Vol. 135, 104163. https://doi.org/10.1016/j.compgeo.2021.104163
Downloads
Published
Issue
Section
License
Copyright (c) 2024 Stavební obzor - Civil Engineering Journal
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
How to Cite
Accepted 2024-01-11
Published 2024-04-30