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Modified Dynamic Stress Concentration Factor for the Scattering of P-wave by Twin Tunnels | ||
| AUT Journal of Civil Engineering | ||
| مقاله 6، دوره 5، شماره 3، آذر 2021، صفحه 433-448 اصل مقاله (2.02 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajce.2022.19395.5729 | ||
| نویسندگان | ||
| Amir Rabiefar1؛ Hamidreza Vosoughifar* 2؛ Ali Nabizadeh3؛ Hassan Negahdar1 | ||
| 1Department of Civil Engineering, Faculty of Civil and Earth Resources Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| 2Department of Civil Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| 3Department of Civil Engineering, Shahid Rajae Teacher Training University, Lavizan, Tehran, Iran | ||
| چکیده | ||
| Stress concentration around twin tunnels and its impact on monuments have been receiving much attention from researchers. To investigate the effect of scattering in twin tunnels, the Hankel function of the first kind has been used by various researchers. The mathematical relation of Fourier expansion was modified and the time-domain analysis was transformed to frequency-domain analysis to provide a novel method for analyzing stress concentration factors. The combined finite element scattering model (FESCAM) was designed and developed in MATLAB. Analysis was performed in the presence of twin tunnels with a scattering of P-wave and in the absence of twin tunnels under the effect of a near-field earthquake. According to the results, dynamic stress concentration factor (DSCF) for Kobe earthquake P- wave with different wave angles and maximum frequency showed maximum scattering at α=0° and θ=0° in the tunnel. In addition to the increased stress concentration factor, the results of the Mann-Whitney statistical test in SPSS revealed a significant difference between the seismic performance of Arg-e Karim Khani and Zand underpass in the presence and absence of the tunnel (P Value<0.05). A scattering effect of less than 10% was calculated taking into account the combined effect of the calculated seismic waves using incremental extended finite element software. Scattering depends on frequency, and higher scattering was reported for higher frequencies. | ||
| کلیدواژهها | ||
| Monument؛ Twin tunnels؛ Dynamic؛ Wave scattering؛ Time history | ||
| مراجع | ||
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[1] A.B. Amorosi, D., Numerical modeling of the transverse dynamic of circular tunnels in clayey soils, Soil Dynamics and Earthquake Engineering, 29(6) (2009) 1059-1072.
[2] H.R. Vosoughifar, Rabiefar, A, Seismic effect of tunnel in the saturated ambience on surface structures subjected to near field earthquake, in: Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamis, 2013.
[3] H.R. Vosoughifar, Rabiefar, A, The effect of increasing the angle of incidence of earthquake on tunnel in the saturated ambience on surface structures subjected to near and far field earthquake, in: 10th International Congress on Civil Engineering (ICCE), Tabriz, Iran.. 2015.
[4] G.-b. Liu, Xie, K.-h. & Liu, X., Dynamic response of a partially sealed tunnel in porous rock under inner water pressure, Tunnelling and Underground Space Technology, 25(4) (2010) 407-414.
[5] Y.H.M. Pao, C, The diffraction of elastic waves and dynamics stress concentrations., Soil Dynamic & Earthquake Engineering, 16 (1973) 111-118.
[6] G. Manolis, Dynamic response of underground structures, 1980.
[7] G.B. Manolis, D. E, Dynamic response of lined tunnels by an isoparametric boundary element method, Computer Methods in Applied Mechanics and Engineering, 36(3) (1983).
[8] N.D.T. Moeen-Varizi, M., scattering and diffraction of plane P and SV waves by two-dimensional inhomogeneities, Soil Dynamics and Earthquake Engineering, 7(4) (1988) 189-200.
[9] S.M.H. Hasheminejad, H, Radiation Loading of a Cylindrical Source in a Fluid-Filled Cylindrical Cavity Embedded Within a Fluid-Saturated Poroelastic Medium, Journal of Applied Mechanics, 69 (2002) 675-683.
[10] Z.L. Chenggang, W, Scattering of plane SV waves by cylindrical canyons in saturated porous medium., Soil Dynamics and Earthquake Engineering, 25(12) (2005) 981-995.
[11] B.E. Gatmiri, H, Scattering of Harmonic Waves by a Circular Cavity in a Porous Medium: Complex Functions Theory Approach, International Journal of Geomechanics, 7(5) (2007) 371-381.
[12] S.A. Hasheminejad, R, Harmonic wave diffraction by two circular cavities in a poroelastic formation, Soil Dynamics and Earthquake Engineering, 27(1) (2007) 29-41.
[13] B.E. Gatmiri, H, Wave scattering in cross-anisotropic porous media around the cavities and inclusions, Soil Dynamics and Earthquake Engineering, 28(12) (2008) 1014-1027.
[14] S.M.A. Hasheminejad, R, Dynamic Stress Concentrations in Lined Twin Tunnels within Fluid-Saturated Soil, Journal of Engineering Mechanics, 134(7) (2008).
[15] L.-F. Jiang, Zhoub, X.-L. & Wang, J.-H, Scattering of a plane wave by a lined cylindrical cavity in a poroelastic half-plane, Computers and Geotechnics, 36 (2009) 773-786.
[16] M. Afifipour, Sharifzadeh, M., Shahriar, K. & Jamshidi, H, Interaction of twin tunnels and shallow foundation at Zand underpass, Shiraz metro, Iran, Tunnelling and Underground Space Technology, 26(2) (2011) 356-363.
[17] M. Azadi, The Seismic Behavior of Urban Tunnels in Soft Saturated Soils, Procedia Engineering, 14 (2011) 2069-3075.
[18] S. Russo, Testing and modeling of dynamic out-of-plane behavior of the historic masonry façade of Palazzo Ducale in Venice, Italy, Engineering Structures, 46 (2013) 130-139.
[19] B.e.a. Sevim, Finite element model calibration effects on the earthquake response of masonry arch bridges, Finite Elements in Analysis and Design, 47(7) (2011) 621-634.
[20] Y.T. Didem Aktas, A, Seismic evaluation and strengthening of nemrut monuments, Journal of Cultural Heritage, 16(3) (2015) 381-385.
[21] Q.W. Liu, R., Dynamic response of twin closely-spaced circular tunnels to harmonic plane waves in a full space, Tunnelling and Underground Space Technology, 32 (2012) 212-220.
[22] Q. Liu, Zhao, M. & Wang, L, Scattering of plane P, SV or Rayleigh waves by a shallow lined tunnel in an elastic half space, Soil Dynamics and Earthquake Engineering, 49 (2013) 52-63.
[23] Q. Liu, Zhao, M. & Zhang, C, Antiplane scattering of SH waves by a circular cavity in an exponentially graded half space, International Journal of Engineering Science, 78 (2014) 61-72.
[24] C. Yi, Zhang, P. & Johansson, D., Dynamic response of a circular lined tunnel with an imperfect interface., Computers and Geotechnics, 55 (2014) 165-171.
[25] C. Zhou, Hu, C., Ma, F. & Liu, D, Elastic wave scattering and dynamic stress concentrations in exponential graded materials with two elliptic holes, Wave Motion, 51(3) (2014) 466-475.
[26] M. Trifunac, Lee, V., Liu, W. & Orbovic, N, Scattering and diffraction of earthquake motions in irregular, elastic layers, II: Rayleigh and body P and SV waves, Soil Dynamics and Earthquake Engineering, 66 (2014) 220-230.
[27] W. Vincent, Liu, W. Y, Two-dimensional scattering and diffraction of P-and SV-waves around a semi-circular canyon in an elastic half-space: An analytic solution via a stress-free wave function, Soil Dynamics and Earthquake Engineering, 63 (2014) 110-119.
[28] T.N. Akhlaghi, A., Effect of Vertically Propagating Shear Waves on Seismic Behavior of Circular Tunnels, The Scientific World Journal, 2014 (2014).
[29] H. Alielahi, Kamalian, M. & Adampira, M, Seismic ground amplification by unlined tunnels subjected to vertically propagating SV and P waves using BEM, Soil Dynamics and Earthquake Engineering, 71 (2015) 63-79.
[30] S.C. Lee, Evanescent wave scattering at off-axis incidence on multiple cylinders located near a surface. , Journal of Quantitative Spectroscopy and Radiative Transfer, 151 (2015) 239-250.
[31] H.R. Vosoughifar, Madadi, F. & Rabiefar, A, Modified Dynamic Stress Concentration Factor for Twin Tunnels Using a Novel Approach of FEM-Scattering, Tunnelling and Underground Space Technology, 70 (2017) 30-41.
[32] L. Huang, Liu, Z., Wu, C. & Liang, J., The scattering of plane P, SV waves by twin lining tunnels with imperfect interfaces embedded in an elastic half-space, Tunnelling, and Underground Space Technology, 85 (2019) 319-330.
[33] Q. Liu, Zhao, M. & Lio, Z., Wave function expansion method for the scattering of SH waves by two symmetrical circular cavities in two bonded exponentially graded half spaces, Engineering Analysis with Boundary Elements, 106 (2019) 389-396.
[34] M. Tao, Zhao, H., Li, Z. & Zhu, J, Analytical and numerical study of a circular cavity subjected to plane and cylindrical P-wave scattering, Tunnelling and Underground Space Technology, 95 (2020) 103-143.
[35] H. Vosoughifar, Modifying a circular analysis method for considering the scattering of earthquake waves in an opening in rock, in: 4th International Conference on Earthquake Geotechnical Engineering, Greece, 2007.
[36] M.S. Abramowitz, I., Handbook of mathematical functions, Washington, DC: National Bureau of Standards., 1964.
[37] ICSR, The Iranian code of practice for seismic resistant design of building (Standard NO.2800-5) Fourth Edition, Road, Housing & Urban Development Research Center, Tehran., 2013.
[38] F. Naeim, The Seismic Design Handbook (Volum1), PEER, 2001.
[39] D.H. Manoochehri, Shiraz City Historic city of Iran., 2015.
[40] F.E. Package, Finite element Package for Analysis of Geotechnical Structures, Delft, Netherland, 2002.
[41] T. Bourbie, Coussy, O. & Zinszner, B, Acoustics of porous media, Hoston: Golf Publishing., 1987. | ||
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