安永林, 蔡海兵, 张彩月. Dynamic Responses of Vertical Shaft Lining Due to High-speed Rail Train[J]. 2016, 36(5): 719-723+736. DOI: 10.13409/j.cnki.jdpme.2016.05.005.
Dynamic Responses of Vertical Shaft Lining Due to High-speed Rail Train
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
Static effect of Hefei-Fujian passenger dedicated line on the neighboring deep vertical shaft was analyzed by considering trains and roadbed as overloaded.A simulation model was built to study the responses of displacement and stress of shaft lining under high-speed train passage.Result shows vertical displacement
horizontal displacement and stress of the backfill shaft are reduced with the reduction of train speed.Additional dynamic vertical displacement and additional dynamic vertical stress are reduced more effectively.The additional dynamic displacement and dynamic stress are larger at the top of the shaft for the freedom surface.Comparing with the singlelane
vertical displacement and vertical stress of vertical shaft increase significantly under train passing
especially in the mouth of the shaft and at 200 mdepth below the surface.
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