Analysis of seismic damage features of HSR CRTS III SBT simply supported bridge system

• Autorzy: Liu Lili , Jiang Lizhong , Zhou Wangbao , Liu Xiang , Feng Yulin

Identyfikatory

DOI

10.1007/s43452-023-00619-5

• Języki publikacji: EN

Abstrakty

EN

In order to investigate the seismic damage features of high-speed railway (HSR) China Railway Track Slab III (CRTSIII) slab ballastless track (SBT) simply supported bridge systems, a nonlinear finite element model of HSR CRTS III SBT simply supported bridge system was established. The damage mechanisms and peak and residual displacement distribution patterns of their critical components under seismic action were investigated. In addition, the sensitivity of rail irregularity to the seismic residual deformation in such critical components was analyzed. The results indicated that midspan piers and bearings are more susceptible to failure than side span piers and bearings, and fixed bearings are more prone to failure than sliding bearings. Fastener and isolation layer deformation increases sharply on both sides of the beam joint. Rail deformation exhibits a parabolic shape that is large in the middle and small at both ends. The critical components of even-span and odd-span systems have significantly different patterns of seismic deformation distribution. Rail irregularity is mainly attributable to bearing residual deformation, pier residual deformation, and fastener residual deformation successively, and the superposition of bearing residual deformation and pier residual deformation is approximately equivalent to rail deformation. Rail irregularity is most sensitive to pier deformation, followed successively by bearing and fastener deformation.

Słowa kluczowe

EN

bridge system; CRTS III; ballastless track; seismic damage mechanism; residual displacement distribution pattern; sensitivity analysis

PL

CRTS III; mechanizm uszkodzeń sejsmicznych; analiza wrażliwości

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e76, 2023
• Opis fizyczny: Bibliogr. 35 poz., rys., tab., wykr.

Twórcy

autor

Liu Lili

• School of Civil Engineering, Central South University, Changsha 410075, People’s Republic of China
• National Engineering Research Center of High-Speed Railway Construction Technology, Changsha 410075, People’s Republic of China

autor

Jiang Lizhong

• School of Civil Engineering, Central South University, Changsha 410075, People’s Republic of China
• National Engineering Research Center of High-Speed Railway Construction Technology, Changsha 410075, People’s Republic of China

autor

Zhou Wangbao

• School of Civil Engineering, Central South University, Changsha 410075, People’s Republic of China
• National Engineering Research Center of High-Speed Railway Construction Technology, Changsha 410075, People’s Republic of China

• https://orcid.org/0000-0003-3338-4971

autor

Liu Xiang

• School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, People’s Republic of China

autor

Feng Yulin

• School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China

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