铁路隧道变截面空气动力学效应分析  

Analysis of aerodynamics effect in changeable cross-section tunnel

作　　者：程爱君[1,2] 马伟斌[1,2] 

机构地区：[1]中国铁道科学研究院铁道建筑研究所,北京100081 [2]高速铁路轨道技术国家重点实验室,北京100081

出　　处：《铁道建筑》2016年第1期29-32,共4页Railway Engineering

摘　　要：通过分析隧道内瞬变压力、洞口微气压波与隧道长度、列车速度的关系,结合相近长度隧道的现场实测结果,得出了动车组以300和350 km/h速度通过一长度800 m隧道时隧道内瞬变压力界限值与洞口微气压波。分析结果表明,该隧道内变截面处断面面积由100 m2减为93 m2后,瞬变压力与微气压波能满足设计标准的要求。通过仿真计算进一步验证了分析结果。Through analyzing the relationship between the transient pressure inside tunnel,the tunnel entrance micropressure wave and the tunnel length,the train speed,the transient pressure limit value inside tunnel and entrance micro pressure wave was obtained by combining with the field test results of the tunnels with similar length when EMU passed through 800 m tunnel with running speed of 300 km/h and 350 km/h.The results show that transient pressure and micro-pressure wave can meet the requirements of design standards when the variable section area inside tunnel was reduced from 100 m to 93 m.The analysis results were verified by the simulation calculation.

关 键 词：高速铁路 隧道 变截面 气动效应 仿真 实测 

分 类 号：TU375.4[建筑科学—结构工程]