本文選題：高鐵　切入點：列車振動　出處：《防災減災工程學報》2016年05期

【摘要】：根據(jù)動力學理論,建立考慮山體、豎井、合福客專的數(shù)值模型,研究高鐵列車運營下豎井襯砌的位移、應力的響應特性。結(jié)果表明:隨著列車速度的降低,豎井襯砌豎向位移、水平位移及應力都減小,只是沿著豎井深度方向減小的幅度不一樣;同時降低車速,對降低豎井襯砌的附加動豎向位移和附加動豎向應力更有效。在豎井頂部靠近山表的位置,此處為自由表面,水平位移、豎向位移等動力響應較大。列車交會下的豎井襯砌的豎向位移和豎向應力較單線行車下有顯著的增大,特別是豎井井口及其以下200m深度的范圍。
[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.
【作者單位】： 湖南科技大學巖土工程穩(wěn)定控制與健康監(jiān)測省重點實驗室;湖南科技大學土木工程學院;安徽理工大學土木建筑學院;
【基金】：湖南省自然科學基金資助項目(14JJ4046) 國家自然科學基金項目(51408216)資助
【分類號】：TD32
，

本文編號：1689456