高铁列车运营下邻近矿区深竖井衬砌的动载影响

发布时间：2018-03-31 06:05

  本文选题：高铁　切入点：列车振动　出处：《防灾减灾工程学报》2016年05期

【摘要】：根据动力学理论,建立考虑山体、竖井、合福客专的数值模型,研究高铁列车运营下竖井衬砌的位移、应力的响应特性。结果表明:随着列车速度的降低,竖井衬砌竖向位移、水平位移及应力都减小,只是沿着竖井深度方向减小的幅度不一样;同时降低车速,对降低竖井衬砌的附加动竖向位移和附加动竖向应力更有效。在竖井顶部靠近山表的位置,此处为自由表面,水平位移、竖向位移等动力响应较大。列车交会下的竖井衬砌的竖向位移和竖向应力较单线行车下有显著的增大,特别是竖井井口及其以下200m深度的范围。
[Abstract]:According to the dynamic theory, a numerical model considering mountain, shaft and Fokke is established to study the displacement and stress response of shaft lining under the operation of high-speed railway train.The results show that with the decrease of train speed, the vertical displacement, horizontal displacement and stress of shaft lining decrease, but the amplitude of decreasing along the direction of shaft depth is different, and the speed of shaft lining decreases.It is more effective to reduce the additional dynamic vertical displacement and the additional dynamic vertical stress of shaft lining.At the top of the shaft near the mountain surface, there is a free surface, horizontal displacement, vertical displacement and other dynamic responses.The vertical displacement and vertical stress of the shaft lining under the train crossing are significantly increased than those under the single line driving, especially in the range of 200 m depth of the shaft head and below the shaft head.
【作者单位】： 湖南科技大学岩土工程稳定控制与健康监测省重点实验室;湖南科技大学土木工程学院;安徽理工大学土木建筑学院;
【基金】：湖南省自然科学基金资助项目(14JJ4046) 国家自然科学基金项目(51408216)资助
【分类号】：TD32
，

本文编号：1689456