پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شمارهها | 692 |
| تعداد مقالات | 10,049 |
| تعداد مشاهده مقاله | 71,052,977 |
| تعداد دریافت فایل اصل مقاله | 62,504,328 |
Seismic behavior analyses of reinforced tunnel with steel fiber reinforced concrete (SFRC) composites by consideration of optimum thickness in artificial neural network (ANN) analyses | ||
| International Journal of Nonlinear Analysis and Applications | ||
| مقاله 11، دوره 16، شماره 11، بهمن 2025، صفحه 133-142 اصل مقاله (1.23 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22075/ijnaa.2024.35531.5286 | ||
| نویسندگان | ||
| Hootan Fakharian1؛ Hadi Bahadori* 2؛ Mohamadali Ramezanpour1؛ Ali Dehghanbanadaki3 | ||
| 1Department of Civil Engineering, Rudehen Branch, Islamic Azad University, Rudehen, Iran | ||
| 2Department of Civil Engineering, Urmia University, Urmia, Iran | ||
| 3Department of Civil Engineering, Damavand Branch, Islamic Azad University, Damavand, Iran | ||
| تاریخ دریافت: 15 مرداد 1403، تاریخ پذیرش: 14 آبان 1403 | ||
| چکیده | ||
| This study is organized in two parts. In the first part, the seismic behaviour of tunnels reinforced with steel fibre-reinforced concrete composites (SFRC) fibre reinforcing is investigated and using the finite element method (FEM) in ABAQUS software, 3 different models of the thickness (similar in terms of compressive strength and tensile strength) have been evaluated in the Tehran Metro tunnel. In this section, to apply seismic force, the PGA characteristics of the El Centro earthquake in the United States have been used, and the parameters of force and displacement concerning time have been extracted. In the second part, using the effect of three different thicknesses of 20, 40 and 60 cm in determining the behaviour of the tunnel under the earthquake, the amount of stress and displacement over time was extracted. These results were investigated using two models of neural networks, MLP and RBF, to determine the optimal thickness to withstand stress and displacement in the tunnel. It was also found that the optimal thickness of the tunnel was obtained using MLP and RBF networks to control stress of 47.95 cm and 48.22 cm, respectively, and to control displacement of 47.21 cm and 48.15 cm, respectively. Finally, it can be acknowledged that using the optimal thicknesses, the maximum stress tolerance by MLP and RBF methods is equal to $1.7556 \times 10^{+ 6}\ N/m^{2}$ and $1.9289 \times 10^{+ 6}\ N/m^{2}$ is obtained. Also, the highest amount of displacement with both methods (due to the good accuracy of both models in determining the displacement) is equal to 0.0256 cm. | ||
| کلیدواژهها | ||
| Seismic Analyses؛ Reinforced Tunnel؛ Thickness؛ Neural Network | ||
| مراجع | ||
|
[1] A. Amorosi and D. Boldini, Numerical modeling of the transverse dynamic behavior of circular tunnels in clayey soils, Soil Dyn. Earthquake Engin. 29 (2009), no. 6, 1059–1072. [2] M.J. Avanaki, A. Hoseini, S. Vahdani, and A. De La Fuente, Numerical-aided design of fiber reinforced concrete tunnel segment joints subjected to seismic loads, Const. Build. Mater. 170 (2018), no. 12, 40–54. [3] A. Bobet, Effect of pore water pressure on tunnel support during static and seismic loading, Tunnel. Underground Space Technol. 18 (2003), no. 4, 377–393. [4] H. Huo, A. Bobet, G. Fernandez, and J. Ramırez, Analytical solution for deep rectangular structures subjected to far-field shear stresses, Tunnel. Underground Space Technol. 21 (2006), no. 6, 613–625. [5] R.N. Hwang and J. Lysmer, Response of buried structures to traveling waves, J. Geotech. Engin. Div. 107 (1981), no. 2, 183–200. [6] S.E. Kattis, D.E. Beskos, and A.H. D. Cheng, 2D dynamic response of unlined and lined tunnels in poroelastic soil to harmonic body waves, Earthquake Engin. Struct. Dyn. 32 (2003), no. 1, 97–110. [7] L.B. Liu, Y. Wang, F. Liu, and J. Zhou, Shaking table model tests on the influence of fault strike on the seismic responses of tunnels, J. Vib. Shock 36 (2017), no. 21, 196–202. [8] X. Liu, B. Guo, X. Li, and Y. Sang, Model experiment study on effect of deformation joints on road tunnel resisting destruction by thrust fault stick-slip dislocation, Thrust Fault J. 8 (2015), no. 4. [9] Y. Liu and F. Gao, Experimental study on the dynamic characteristics of a tunnel-crossing fault using a shake-table test, J. Vib. Shock 35 (2016), no. 12, 160–165. [10] D. Park, M. Sagong, D.Y. Kwak, and C.G. Jeong, Simulation of tunnel response under spatially varying ground motion, Soil Dyn. Earthquake Engin. 29 (2009), no. 11, 1417–1424. [11] J. Penzien, Seismically induced raking of tunnel linings, Earthquake Engin. Struct. Dyn. 29 (2000), no. 5, 683–691. [12] J. Penzien and C.L. Wu, Stresses in linings of bored tunnels, Earthquake Engin. Struct. Dyn. 27 (1998), no. 3, 283–300. [13] M. Russo, G. Germani, and W. Amberg, Construction of large tunnel through active faults: A recent application, Int. Conf. Tunnel. Underground Space Use, 2002, pp. 16–18. [14] D. Wang, G. Cui, and J. Yuan, Model experimental study on effect of reducing dislocation measures underying stick-slip fault dislocation of tunnel, Chin. J. Geotech. Engin. 40 (2018), no. 8, 1515-1521. [15] W. Xiong, W. Fang, and J.B. Peng, Numerical analysis of effect of normal fault activity on road mountain tunnel project, Chinese J. Rock Mech. Engin. 29 (2010), no. 1, 2845–2852. [16] H.T. Yu, J.T. Chen, A. Bobet, and Y. Yuan, Damage observation and assessment of the Longxi tunnel during the Wenchuan earthquake, Tunnel. Underground Space Technol. 54 (2016), no. 2, 102–116. [17] H.T. Yu, J.T. Chen, Y. Yuan, and X. Zhao, Seismic damage in mountain tunnels due to the Wenchuan strong earthquake, J. Mountain Sci. 13 (2016), no. 11, 1958–1972. [18] H.T. Yu, Y. Yuan, X. Liu, Y.W. Li, and S.W. Ji, Damages of the Shaohuoping road tunnel near the epicentre, Struct. Infrast. Engin. 9 (2013), no. 9, 935–951. [19] H.T. Yu, Y. Yuan, G.P. Xu, Q.K. Su, X. Yan, and C. Li, Multi-point shaking table test for long tunnels subjected to non-uniform seismic loadings - Part II: application to the HZM immersed tunnel, Soil Dyn. Earthquake Engin. 108 (2018), no. 8, 187–195. [20] Y. Yuan, H.T. Yu, C. Li, X. Yan, and J.Y. Yuan, Multi-point shaking table test for long tunnels subjected to non-uniform seismic loadings - Part I: Theory and validation, Soil Dyn. Earthquake Engin. 108 (2018), no. 8, 177–186. | ||
|
آمار تعداد مشاهده مقاله: 729 تعداد دریافت فایل اصل مقاله: 648 |
||