Seismic analysis of high-speed railway irregular bridge–track system considering V-shaped canyon effect

Abstract

To explore the effect of canyon topography on the seismic response of railway irregular bridge–track system that crosses a V-shaped canyon, seismic ground motions of the horizontal site and V-shaped canyon site were simulated through theoretical analysis with 12 earthquake records selected from the Pacific Earthquake Engineering Research Center (PEER) Strong Ground Motion Database matching the site condition of the bridge. Nonlinear seismic response analyses of an existing 11-span irregular simply supported railway bridge–track system were performed under the simulated spatially varying ground motions. The effects of the V-shaped canyon topography on the peak ground acceleration at bridge foundations and seismic responses of the bridge–track system were analyzed. Comparisons between the results of horizontal and V-shaped canyon sites show that the top relative displacement between adjacent piers at the junction of the incident side and the back side of the V-shaped site is almost two times that of the horizontal site, which also determines the seismic response of the fastener. The maximum displacement of the fastener occurs in the V-shaped canyon site and is 1.4 times larger than that in the horizontal site. Neglecting the effect of V-shaped canyon leads to the inappropriate assessment of the maximum seismic response of the irregular high-speed railway bridge–track system. Moreover, engineers should focus on the girder end to the left or right of the two fasteners within the distance of track seismic damage.

References

[1.] Gong M, Lin S, Sun J, Li S, Dai J, Xie L. Seismic intensity map and typical structural damage of 2010 Ms 7.1 Yushu earthquake in China. Nat Hazards 2015, 77 847-866

[2.] Wei B, Wang W-H, Wang P, Yang T-H, Jiang L-Z, Wang T. Seismic responses of a high-speed railway (HSR) bridge and track simulation under longitudinal earthquakes. J Earthq Eng 2020

[3.] Guo W, Gao X, Hu P, Hu Y, Zhai ZP, Bu D, Jiang LZ. Seismic damage features of high-speed railway simply supported bridge–track system under near-fault earthquake. Adv Struct Eng 2020, 23 8 1573-1586

[4.] Hu Y, Guo W. Seismic response of high-speed railway bridge–track system considering unequal-height pier configurations. Soil Dyn Earthq Eng 2020, 137 106250

[5.] Li B, Bi KM, Chouw N, Butterworth JW, Hao H. Experimental investigation of spatially varying effect of ground motions on bridge pounding. Earthq Eng Struct Dyn 2012, 41 1959-1976

[6.] Jia HY, Zhang DY, Zheng SX, Xie WC, Pandey MD. Local site effects on a high-pier railway bridge under tridirectional spatial excitations: Nonstationary stochastic analysis. Soil Dyn Earthq Eng 2013, 52 55-69

[7.] Gong W, Zhu Z, Liu Y, Liu R, Tang Y, Jiang L. Running safety assessment of a train traversing a three-tower cable-stayed bridge under spatially varying ground motion. Railw Eng Sci 2020, 28 2 184-198

[8.] Ministry of Railways of the People's Republic of China (2006) GB50111-2006. Code for seismic design of railway engineering. China Planning Press, Beijing

[9.] Zhang L, Wang J, Xu Y, He C, Zhang C. A Procedure for 3D seismic simulation from rupture to structures by coupling SEM and FEM. Bull Seismol Soc Am 2020, 110 1134-1148

[10.] Liu GH, Feng X, Lian JJ, Zhu HT, Li Y. Simulation of spatially variable seismic underground motions in U-shaped canyons. J Earthq Eng 2019, 23 463-486

[11.] Trifunac M, Hudson DE. Analysis of the pacoima dam accelerogram-san fernando, California, earthquake of 1971. Bull Seismol Soc Am 1971, 61 1393-1411

[12.] Huang HC, Chiu HC. Canyon topography effects on ground motion at Feitsui damsite. Soil Dyn Earthq Eng 1999, 18 87-99

[13.] Zhang XL, Peng XB, Li XJ, Zhou ZH, Mebarki A, Dou Z, Nie W. Seismic effects of a small sedimentary basin in the eastern Tibetan plateau based on numerical simulation and ground motion records from aftershocks of the 2008 Mw7.9 Wenchuan. China earthquake. J. Asian Earth Sci. 2020, 192 104257

[14.] Poursartip B, Fathi A, Tassoulas JL. Large-scale simulation of seismic wave motion: A review. Soil Dyn Earthq Eng 2020, 129 105909

[15.] D T.M.. Scattering of plane SH waves by a semi-cylindrical canyion. Earthq Eng Struct Dyn 1972, 1 267-281

[16.] Gao Y, Zhang N. Scattering of cylindrical SH waves induced by a symmetrical V-shaped canyon: near-source topographic effects. Geophys J Int 2013, 193 874-885

[17.] Alitalesh M, Shahnazari H, Baziar MH. Parametric study on seismic topography-soil-structure interaction; topographic effect. Geotech Geol Eng 2018, 36 2649-2666

[18.] Di Fiore V. Seismic site amplification induced by topographic irregularity: Results of a numerical analysis on 2D synthetic models. Eng Geol 2010, 114 109-115

[19.] Katebi M, Gatmiri B, Maghoul P. A numerical study on the seismic site response of rocky valleys with irregular topographic conditions. J Multiscale Model 2019, 10 4 1850011

[20.] Ducellier A. Interactions between topographic irregularities and seismic ground motion investigated using a hybrid FD-FE method. Bull Earthq Eng 2012, 10 773-792

[21.] Gao YF. Analytical models and amplification effects of seismic wave propagation in canyon sites. Chin J Geotech Eng 2019, 41 1-25(in Chinese)

[22.] Liu G, Feng G. Variable seismic motions of P-wave scattering by a layered V-shaped canyon of the second stratification type. Soil Dyn Earthq Eng 2021, 144 106642

[23.] Li Z, Li H. An analytical solution of scattering of semi-circular hill on cylindrical SH waves. Bull Eng Geol Env 2021, 80 5167-5179

[24.] Li XQ, Li ZX, Crewe AJ. Nonlinear seismic analysis of a high-pier, long-span, continuous RC frame bridge under spatially variable ground motions. Soil Dyn Earthq Eng 2018, 114 298-312

[25.] Xie X, Yang TY. Performance evaluation of chinese high-speed railway bridges under seismic loads. Int J Struct Stab Dyn 2020, 20 5 2050066

[26.] Wei B, Zuo CJ, He XH, Jiang LZ, Wang T. Effects of vertical ground motions on seismic vulnerabilities of a continuous track-bridge system of high-speed railway. Soil Dyn Earthq Eng 2018, 115 281-290

[27.] Wei B, Yang TH, Jiang LZ, He XH. Effects of uncertain characteristic periods of ground motions on seismic vulnerabilities of a continuous track-bridge system of high-speed railway. Bull Earthq Eng 2018, 16 3739-3769

[28.] Yu J, Jiang L, Zhou W, Liu X, Nie L, Zhang Y, Feng Y, Cao S. Running test on high-speed railway track-simply supported girder bridge systems under seismic action. Bull Earthq Eng 2021

[29.] Zhu S, Luo J, Wang M, Cai C. Mechanical characteristic variation of ballastless track in high-speed railway: effect of train–track interaction and environment loads. Railw Eng Sci 2020, 28 408-423

[30.] Xu L, Zhai W. Train–track coupled dynamics analysis: system spatial variation on geometry, physics and mechanics. Railw Eng Sci 2020, 28 1 36-53

[31.] Wei B, Hu ZL, Zuo CJ, Wang WH, Jiang LZ. Effects of horizontal ground motion incident angle on the seismic risk assessment of a high-speed railway continuous bridge. Arch Civ Mech Eng 2021, 21 18

[32.] Wei B, Yang TH, Jiang LZ, He XH. Effects of friction-based fixed bearings on the seismic vulnerability of a high-speed railway continuous bridge. Adv Struct Eng 2018, 21 643-657

[33.] Guo W, Hu Y, Hou W, Gao X, Bu D, Xie X. Seismic damage mechanism of CRTS-II slab ballastless track structure on high-speed railway bridges. Int J Struct Stab Dyn 2020, 20 1 2050011

[34.] Yu J, Jiang L, Zhou W, Lu J, Zhong T, Peng K. Study on the influence of trains on the seismic response of high-speed railway structure under lateral uncertain earthquakes. Bull Earthq Eng 2021, 19 2971-2992

[35.] Yu J, Jiang LZ, Zhou WB, Liu X, Lai ZP, Feng YL. Study on the dynamic response correction factor of a coupled high-speed train-track-bridge system under near-fault earthquakes. Mech Based Des Struct Mech 2020

[36.] Tianbo P, Jiangzhong L, Lichu F. Development and application of double spherical aseismic bearing. J Tongji Univ (Nat Sci) 2007, 35 2 176-180(in Chinese)

[37.] Ministry of Transportaiton of the People’s Republic of China (2014) JT/T 927-2014. Double spherical seismic isolation bearing for bridges. China Communications Press, Beijing

[38.] Ministry of Transportaiton of the People’s Republic of China (2020) JTG/T 2231-01–2020. Specifications for seismic design of highway bridges. Communications Press, Beijing

[39.] Eroez M, DesRoches R. Bridge seismic response as a function of the friction pendulum system (FPS) modeling assumptions. Eng Struct 2008, 30 3204-3212

[40.] Zhu Z, Yan M, Li X, Sheng X, Gao Y, Yu Z. Deformation adaptable of long-span cable-stayed bridge and ballast less trail structure. China Rail Sci 2019, 40 2 16-24(in Chinese)

[41.] Power M, Chiou B, Abrahamson N, Bozorgnia Y, Shantz T, Roblee C. An overview of the NGA project. Earthq Spectra 2008, 24 3-21

[42.] Chang K-H, Tsaur D-H, Wang J-H. Response of a shallow asymmetric V-shaped canyon to antiplane elastic waves. P Roy Soc A-math Phy 2015, 471 20140215

Funding

national natural science foundation of china(52078498)