Horizontal Wall Movement and Ground Surface Settlement Analysis of Braced Excavation Based on Support Spacing
DOI:
https://doi.org/10.30737/ukarst.v5i2.1598Keywords:
Deformation, Finite Element Method, Struts Spacing, System StiffnessAbstract
Lateral supports, including walls and bracing systems on deep excavation, are generally required to prevent excessive horizontal wall movement and ground surface settlement which can cause damage to the excavation construction itself and adjacent structures. These criteria are influenced by the stiffness of the excavation system, including the spacing of vertical and horizontal supports (struts). This paper presents the parametric study using the variation of struts spacing in the vertical and horizontal direction to analyze the influence on horizontal wall movement and ground surface settlement. The analysis was carried out using finite element software, PLAXIS performed in 2D plain strain and 3D. This study shows that struts spacing in the horizontal and vertical direction is equally important and equally significant on the deformation that occurs with a maximum difference of about 0.06%. The maximum horizontal wall movement ratio computed by 3D analysis to the 2D analysis is defined as plain strain ratio (PSR). The PSR value decreases when the system stiffness is decreased. Meanwhile, when the system stiffness was higher, the PSR value will be higher and closer to 1, showing that the difference in the 3D and 2D models is relatively small.
References
C.-Y. Ou, D.-C. Chiou, and T.-S. Wu, “Three-Dimensional Finite Element Analysis of Deep Excavations,†J. Geotech. Eng., vol. 122, no. 5, pp. 337–345, May 1996, doi: 10.1061/(asce)0733-9410(1996)122:5(337).
C.-Y. Ou, B.-Y. Shiau, and I.-W. Wang, “Three-dimensional deformation behavior of the Taipei National Enterprise Center (TNEC) excavation case history,†Can. Geotech. J., vol. 37, no. 2, pp. 438–448, 2000.
Y. Tan and B. Wei, “Observed Behaviors of a Long and Deep Excavation Constructed by Cut-and-Cover Technique in Shanghai Soft Clay,†J. Geotech. Geoenvironmental Eng. ASCE, vol. 138, no. 1, pp. 69–88, Jan. 2012.
M. Kurnia and P. P. Rahardjo, “Performance Analysis Of ‘Toga’ Foundation With Cap On Thick Soft Soil Based On Laboratory Models And Finite Element Analysis,†UKaRsT, vol. 4, no. 2, p. 222, Oct. 2020, doi: http://dx.doi.org/10.30737/ukarst.v3i2.
R. J. Finno, J. T. Blackburn, and J. F. Roboski, “Three-Dimensional Effects for Supported Excavations in Clay,†J. Geotech. Geoenvironmental Eng. ASCE, vol. 133, no. 1, pp. 30–36, Jan. 2007.
C.-H. Wu, C.-Y. Ou, and N. Tung, “CORNER EFFECTS IN DEEP EXCAVATIONS-ESTABLISHMENT OF A FORECAST MODEL FOR TAIPEI BASIN T2 ZONE,†2010.
A. Lim and C.-Y. Ou, “Performance and Three-Dimensional Analyses of a Wide Excavation in Soft Soil with Strut-Free Retaining System,†Int. J. Geomech., vol. 18, no. 9, p. 05018007, Sep. 2018, doi: 10.1061/(ASCE)GM.1943-5622.0001165.
Z. Y. Orazalin, A. J. Whittle, and M. B. Olsen, “Three-Dimensional Analyses of Excavation Support System for the Stata Center Basement on the MIT Campus,†J. Geotech. Geoenvironmental Eng., vol. 141, no. 7, p. 05015001, Jul. 2015, doi: 10.1061/(asce)gt.1943-5606.0001326.
S.-L. Chen, C. Ho, and Y.-C. Kuo, “Three-Dimensional Numerical Analysis of Ground Surface Settlement Induced by the Excavation of Shield Tunnels,†in Tunnel Management, Emerging Technologies, and Innovation, May 2011, pp. 80–87, doi: 10.1061/47632(411)11.
B. Jiang, J. Ma, and J. Chu, “The Influence of Soil Surrounding the Caisson Cutting Edge to Excavation and Sinking,†Jan. 2019, pp. 435–448, doi: 10.1061/9780784482049.043.
Y.-X. Wu, H.-M. Lyu, J. Han, and S.-L. Shen, “Dewatering–Induced Building Settlement around a Deep Excavation in Soft Deposit in Tianjin, China,†J. Geotech. Geoenvironmental Eng., vol. 145, no. 5, p. 05019003, May 2019, doi: 10.1061/(asce)gt.1943-5606.0002045.
C. Yang, Y. Chen, Z. Guo, W. Zhu, and R. Wang, “Surface Settlement Control in the Excavation of a Shallow Intersection between a Double-Arched Tunnel and a Connection Tunnel,†Int. J. Geomech., vol. 21, no. 4, p. 04021035, Apr. 2021, doi: 10.1061/(asce)gm.1943-5622.0001983.
L. Zhang, X. Wu, and H. Liu, “Strategies to Reduce Ground Settlement from Shallow Tunnel Excavation: A Case Study in China,†J. Constr. Eng. Manag., vol. 142, no. 5, p. 04016001, May 2016, doi: 10.1061/(asce)co.1943-7862.0001087.
R. I. Kusuma, E. Mina, and W. R. Amala, “ANALISIS DEFORMASI LATERAL DIAPHRAGM WALL DAN DEWATERING PADA KONSTRUKSI BASEMENT (Studi kasus: Proyek The Ayoma Apartment, Serpong, Tangerang Selatan),†J. FONDASI, vol. 8, no. 1, Apr. 2019, doi: 10.36055/jft.v8i1.5398.
H. M. Pasaribu, “ANALISIS DEFORMASI GALIAN DALAM PADA TITIK TEPI DINDING DIAFRAGMA DENGAN METODE ELEMEN HINGGA MELALUI STUDI EVALUASI MODEL TANAH,†Educ. Build., vol. 4, no. 1, Jun. 2018, doi: 10.24114/eb.v4i1.10038.
D. W. Apriani, U. Mustofa, and R. Hidayat, “Soil Shear Strength Parameter Analysis Based On Behavior Analysis Of Landslide Case,†U KaRsT, vol. 4, no. 2, pp. 163–176, 2020, doi:10.1016/j.nrjag.2017.12.003.
P. G. Hsieh and C. Y. Ou, “Shape of ground surface settlement profiles caused by excavation,†Can. Geotech. J., vol. 35, no. 6, pp. 1004–1017, 1998.
J. Roboski and R. J. Finno, “Distributions of ground movements parallel to deep excavations in clay,†Can. Geotech. J., vol. 43, no. 1, pp. 43–58, Jan. 2006.
G. T. Kung, C. H. Juang, E. C. Hsiao, and Y. M. Hashash, “Simplified Model for Wall Deflection and Ground-Surface Settlement Caused by Braced Excavation in Clays,†J. Geotech. Geoenvironmental Eng. ASCE, vol. 133, no. 6, pp. 731–747, Jun. 2007.
G. Clough, E. Smith, and B. P. Sweeney, “Movement Control of Excavation Support Systems by Iterative Design,†Proc., Found. Eng. Congr. Curr. Princ. Pract. ASCE, vol. 2, no. 1, pp. 869–884, 1989.
M. Rouainia, G. Elia, S. Panayides, and P. Scott, “Nonlinear Finite-Element Prediction of the Performance of a Deep Excavation in Boston Blue Clay,†J. Geotech. Geoenvironmental Eng., vol. 143, no. 5, p. 04017005, May 2017, doi: 10.1061/(asce)gt.1943-5606.0001650.
M. A. Nikolinakou, A. J. Whittle, S. Savidis, and U. Schran, “Prediction and Interpretation of the Performance of a Deep Excavation in Berlin Sand,†J. Geotech. Geoenvironmental Eng., vol. 137, no. 11, pp. 1047–1061, Nov. 2011, doi: 10.1061/(asce)gt.1943-5606.0000518.
C. Girsang, P. P. Rahardjo, and A. Lim, “Modelling the Response of Single Passive Piles Subjected to Lateral Soil Movement using PLAXIS,†Ukarst J. Univ. Kadiri Ris. Tek. Sipil, vol. 5, no. 1, pp. 1–16, 2021, doi: 10.17577/ijertv4is030269.
R. B. . Brinkgreve, S. Kumarswamy, W. . Swolfs, D. Waterman, A. Chesaru, and P. Bonnier, PLAXIS 2016, 2016th ed. Delf: Plaxis bv, 2016.
W. Tang and F. Ye, “The application of PLAXIS software in deformation analysis of Shanghai maglev line due to nearby foundation pit excavation,†in CICTP 2019: Transportation in China - Connecting the World - Proceedings of the 19th COTA International Conference of Transportation Professionals, 2019, pp. 226–237, doi: 10.1061/9780784482292.021.
C. Surarak, S. Likitlersuang, D. Wanatowski, A. Balasubramaniam, E. Oh, and H. Guan, “Stiffness and strength parameters for hardening soil model of soft and stiff Bangkok clays,†Soils Found., vol. 52, no. 4, pp. 682–697, Aug. 2012, doi: 10.1016/j.sandf.2012.07.009.
J. M. Duncan and C.-Y. Chang, “Nonlinear Analysis of Stress and Strain in Soils,†J. Soil Mech. Found. Div., vol. 96, no. 5, pp. 1629–1653, Sep. 1970, doi: 10.1061/jsfeaq.0001458.
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