CAJ | 학술논문

大西铁路客运专线途径太原盆地、临汾盆地和运城盆地，该3块盆地孕育有若干地裂缝。为了分析列车动荷载作用下，地裂缝场地铁路客运专线运营的安全性和舒适性，利用有限差分方法计算了动车荷载作用下地裂缝场地和无地裂缝场地路堤的动力响应问题。计算结果表明：地裂缝场地路堤的动位移和速度较无地裂缝场地大；地裂缝场地动应力在埋深7~11m处发生了突变；上、下盘的主要影响范围内分别为6m和3m。
대서철로객운전선도경태원분지、림분분지화운성분지，해3괴분지잉육유약간지렬봉。위료분석열차동하재작용하，지렬봉장지철로객운전선운영적안전성화서괄성，이용유한차분방법계산료동차하재작용하지렬봉장지화무지렬봉장지로제적동력향응문제。계산결과표명：지렬봉장지로제적동위이화속도교무지렬봉장지대；지렬봉장지동응력재매심7~11m처발생료돌변；상、하반적주요영향범위내분별위6m화3m。
Datong-Xi'an Railway passenger-dedicated line passes through Taiyuan basin, Linfen basin and Yuncheng basin, and a number of ground fissures have developed in the three basins. To analyze the operation safety performance and riding comfort level of railway passenger-dedicated line in ground fissure area under the action of dynamic train load, this paper utilized the finite difference method and calculated the dynamic responses of the railway embankments located in the areas with and without ground fissures under the action of train load. The results show that the dynamic displacement and velocity of the embankment in the ground fissure area is larger than that in the area without ground fissure; there is a sudden change of dynamic stress at the burial depth of 7 m to 11 m in the ground fissure area;the main influence areas of hanging wall and footwall are respectively 6m and 3m.