Bulletin of Earthquake Engineering

, Volume 16, Issue 9, pp 3739–3769 | Cite as

Effects of uncertain characteristic periods of ground motions on seismic vulnerabilities of a continuous track–bridge system of high-speed railway

  • Biao Wei
  • Tianhan Yang
  • Lizhong Jiang
  • Xuhui He
Original Research Paper


The high-speed railway in China has to pass through the site surrounded by several known faults. Different earthquake mechanics of those faults and propagation paths cause different ground motions, including different peak ground accelerations (PGA), durations and characteristic periods, acting on the high-speed railway bridges. However, the previous seismic vulnerability analysis mainly aimed at the influence of PGA instead of characteristic periods on the seismic fragilities of bridge structure rather than track–bridge system. By taking a typical and common continuous bridge recommended in Chinese criterion as example, the effects of the uncertain characteristic periods of ground motions on the seismic responses and fragilities of track–bridge system were analyzed based on a numerical method. The results indicate that the probabilities exceeding any damage state of most components, including the bridge and track parts, increase with the characteristic period of ground motions. The uncertain characteristic periods of ground motions should be fully considered for the seismic design of track–bridge system, especially when the uncertain characteristic periods change around a small value. In the seismic vulnerability analysis, the uncertain of the designed characteristic period of ground motions should be developed by considering the different earthquake mechanics of several known faults surrounding the bridge site and the complex propagation paths of ground motion waves through different soils. Using a constant characteristic period of ground motions only considering the soil profile at the local site of bridge possibly leads to an unsafe result in the current criterion.


High-speed railway Continuous bridges CRTS II track Ground motions Characteristic periods 



This research is jointly supported by the National Natural Science Foundations of China under Grant Nos. 51778635 and 51778630, the Natural Science Foundations of Hunan Province under Grant No. 2015JJ3159, the Innovation-driven Plan in Central South University under Grant No. 2015CX006, and the Experimental Foundations of Seismic Comprehensive Test for Railway Bridge Piers in High Intensity Earthquake Area from Chengdu to Lanzhou under Grant No. CLRQT-2015-010. The above support is greatly appreciated.


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Civil EngineeringCentral South UniversityChangshaChina
  2. 2.National Engineering Laboratory for High Speed Railway ConstructionChangshaChina

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