DYNAMIC RESPONSE ANALYSIS OF CABLE TUNNEL STRUCTURE UNDER HIGH-SPEED TRAIN VIBRATORY LOAD
QU Cun;GAO Liang;XIN Tao;XU Liang
Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (3) : 264-268.
DYNAMIC RESPONSE ANALYSIS OF CABLE TUNNEL STRUCTURE UNDER HIGH-SPEED TRAIN VIBRATORY LOAD
The underground tunnel and cable in the city is complex, mass transit or inter-city high-speed railway would be built above the underground tunnel and cable. Beijing-Tianjin High-speed Railway was regarded as an example to research the dynamic influence which was applied by the vibratory load of high-speed train on the underground tunnel and cable. Using coupling dynamics, the vibration analysis model of vehicle-track coupling system was built, and the dynamic response of vehicle-track coupling system caused by the high-speed train was calculated. On the basis of finite element theory, the pile-slab-soil-tunnel longitudinal-transverse-vertical spatial coupled dynamic simulation model was built. The load spectrum, which was obtained by using the vibration analysis model of vehicle-track coupling system, was used as external motivation and acted on the dynamic simulation model, and the dynamic response of cable tunnel was researched. The results show that cable tunnel under pile-slab structure would not be influenced unfavorably by dynamic action of high-speed train vibratory load after the operation of Beijing-Tianjin High-speed Railway.
high-speed railway / vibratory load / cable tunnel / dynamic response {{custom_keyword}} /
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