Beam-track interaction of high-speed railway bridge with ballast track |
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Authors: | Bin Yan Gong-lian Dai and Hua-ping Zhang |
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Affiliation: | [1]Department of Civil Engineering, Central South University, Changsha 410075, China [2]Maintenance Departments of Guangzhou Municipal Engineering, Guangzhou 510100, China |
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Abstract: | Based on the construction bridge of Xiamen-Shenzhen high-speed railway (9–32 m simply-supported beam + 6×32 m continuous beam),
the pier-beam-track finite element model, where the continuous beam of the ballast track and simply-supported beam are combined
with each other, was established. The laws of the track stress, the pier longitudinal stress and the beam-track relative displacement
were analyzed. The results show that reducing the longitudinal resistance can effectively reduce the track stress and the
pier stress of the continuous beam, and increase the beam-track relative displacement. Increasing the rigid pier stiffness
of continuous beam can reduce the track braking stress, increase the pier longitudinal stress and reduce the beam-track relative
displacement. Increasing the rigid pier stiffness of simply-supported beam can reduce the track braking stress, the rigid
pier longitudinal stress and the beam-track relative displacement. |
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Keywords: | high-speed railway beam-track interaction ballast track rail longitudinal force continuous beam |
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