Beam-track interaction of high-speed railway bridge with ballast track
Beam-track interaction of high-speed railway bridge with ballast track
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DOI：
10.1007/s11771-012-1161-8
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发表时间：
2012-04
影响因子：
4.4
通讯作者：
B. Yan;G. Dai;Huan Zhang
中科院分区：
文献类型：
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作者：
B. Yan;G. Dai;Huan Zhang
以厦深高速铁路施工桥（9-32 m简支梁+6 ×32 m连续梁）为背景，建立有碴轨道连续梁与简支梁组合的墩-梁-轨有限元模型。分析了轨道应力、桥墩纵向应力和梁轨相对位移的变化规律。结果表明，减小纵向阻力能有效降低轨道应力和连续梁墩应力，增大梁轨相对位移。增大连续梁刚性墩刚度可以减小轨道制动应力，增大墩身纵向应力，减小梁轨相对位移。提高简支梁刚性墩刚度可以减小轨道制动应力、刚性墩纵向应力和梁轨相对位移。
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.