Critical coupling span number in high-speed railway simply supported beam bridge

Wang-Bao Zhou; Yuntai Zhang; Lizhong Jiang; Yulin Feng; Xiang Liu; Zhipeng Lai

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자료유형: 학술저널

저자정보: Wang-Bao Zhou (Central South University) Yuntai Zhang (Central South University) Lizhong Jiang (Central South University) Yulin Feng (Central South University) Xiang Liu (Central South University) Zhipeng Lai (Central South University)

저널정보: 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.28 No.1

발행연도: 2021.1

수록면: 13 - 28 (16page)

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In long-distance railways, some particular spans of high-speed railway simply supported beam bridges (HSRSBs) are commonly selected as the target structure. The target structure is the part of interest for the study and intended to be analyzed. Due to longitudinal constraints of the track system, the target structure is tightly coupled with other spans within certain range, and is affected by the coupled spans under longitudinal earthquake condition. A massive amount of time-consuming computation is required to determine the coupling span number using current finite element models. In an effort to overcome this challenge, an equivalent method for the longitudinal constraints of the track system is proposed, which greatly reduces the complexity of finite element model while retaining calculation precision. The coupling span number was determined by seismic analyses of a large number of cases using equivalent finite element models. Moreover, the influence of pier height and bottom pier stiffness on coupling span number was studied. Based on the relationship between the equivalent boundary sensitivity critical point and coupling span number, a method to quickly obtain coupling span number of the target structure in arbitrary HSRSB was constructed.

#coupling effect #critical coupling span number #equivalent model #spring-mass system

참고문헌 (16)

참고문헌 신청

Yulin Feng / 2019 / An analytical solution to the mapping relationship between bridge structures vertical deformation and rail deformation of high-speed railway / Steel and Composite Structures, An International Journal 33(2):209~224

Hongye Gou / 2018 / Effect of bridge lateral deformation on track geometry of high-speed railway / Steel and Composite Structures, An International Journal 29(2):219~229

Robert Jankowski / 1998 / Pounding of superstructure segments in isolated elevated bridge during earthquakes / Earthquake Engineering & Structural Dynamics 27(5):487~502

Jankowski, R. / 2000 / Reduction of pounding effects in elevated bridges during earthquakes / Earthq. Eng. Struct. D 29(2):195~212

Lizhong Jiang / 2019 / Vibration characteristic analysis of high-speed railway simply supported beam bridge-track structure system / Steel and Composite Structures, An International Journal 31(6):591~600

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