中南大学学报（自然科学版）2011，Vol.42Issue(8)：2514-2519,6.
竖井对隧道内瞬变压力的影响
Influence of shaft on alleviating transient pressure in tunnel
摘要
Abstract
Based on unsteady N-S equation of three-dimensional and compressible viscous fluid, transient pressure was simulated when a high-speed train passed by a tunnel with shaft. Time course and amplitude of transient pressure on the train were found. The results show that the calculated results agree with those of the experimental model. The switch of pressure curves attained by two methods are accorded completely, and amplitude merely presented difference is only about 5%, which indicates that simulation method applied is better to simulate aerodynamic effect when a high-speed train passes through a tunnel. Shaft can effectively reduce the transient pressure when a train runs through a tunnel, and pressure degradation of measuring point on the surface of middle car body is maximal, which reaches 31.2%. A assured tunnel in parameter has the best shaft location, number and section area that make alleviating effect best.关键词
竖井/隧道/高速列车/瞬变压力Key words
shaft/ tunnel/ high-speed train/ transient pressure分类
交通工程引用本文复制引用
李志伟,梁习锋,张健..竖井对隧道内瞬变压力的影响[J].中南大学学报（自然科学版）,2011,42(8):2514-2519,6.基金项目
铁道部科技研究开发计划项目(2005K002-D-2) （2005K002-D-2）
