Dynamic behavior of hybrid framed arch railway bridge under moving trains. Issue 8 (3rd August 2019)

• Record Type: Journal Article
• Authors: Gou, Hongye; Long, Hao; Bao, Yi; Chen, Genda; Pu, Qianhui
• Is Part Of: Structure and infrastructure engineering. Volume 15:Issue 8(2019)
• Page Start: 1015
• Page End: 1024
• Publication Date: 2019-08-03
• Subjects: Hybrid framed arch bridge -- in-site dynamic test -- dynamic response -- finite element model -- impact effect -- riding comfort; Structural analysis (Engineering) -- Periodicals; Structural engineering -- Periodicals; Buildings -- Performance -- Periodicals; 620.005
• DOI: 10.1080/15732479.2019.1594314
• Languages: English
• ISSNs: 1573-2479

Abstract

Abstract: In this study, the dynamic behavior of a concrete-filled steel tube (CFST) hybrid framed arch railway bridge under moving trains are investigated through an in-site dynamic test. The bridge was tested under train loadings in different scenarios and at different speeds of the trains. The free vibration characteristics, strain, displacement, and acceleration of the bridge structure were measured to evaluate the dynamic responses of the train-bridge coupling system. A three-dimensional finite element model, which took into account the train-bridge coupling and track irregularities, was established to analyze the behaviors of the train-bridge system. The model was validated against the in situ test results. The impact effect on the girder was greater than that of the arch frame. The acceleration responses of the trains on the bridge increased with the train's speed. The riding comfort of the trains was evaluated based on the measured dynamic responses of trains.