인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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지원사업
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커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 저자정보
피인용 0
초록·키워드
China's high-speed railway (HSR) has entered the operation and maintenance stage. Exploring the damage mechanism of HSR is of great significance in determining its post-earthquake functional usability. China Railway Track System III (CRTS III) Slab Ballastless Track (SBT) is a mainstream track system independently developed by China, but the damage mechanism and failure chain of the HSR CRTS III SBT simple-supported bridge (SSB) is still unclear. To explore the damage mechanism and failure chain of the HSR SSB under the action of different combinations of seismic directions, a test of CRTS III SBT was carried out to explore the constitutive relationship of the isolation layer. Then based on the test data, a non-linear finite element model (FEM) of CRTS III SBT SSB for HSR was built and validated. The vulnerable parts of the HSR SSB system under earthquake excitation were analyzed, and the damage distribution pattern, damage and failure sequences of vulnerable parts under four kinds of earthquake conditions were investigated. According to the research, the most vulnerable components of the HSR SSB system were the bearings, piers, and fasteners under earthquake, The fixed bearing experienced earlier failure than the sliding bearing, The pier's damage under transverse seismic was far smaller than that under longitudinal seismic, The failure chain of the HSR SSB system were different under transverse and longitudinal earthquake, During the bridge design phase, it is suggested to strengthen the middle span bearing and pier, and to strengthen the fasteners at the beam joints without affecting the track smoothness.
본문·목차
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