摘要
高速动车组进入隧道运行,动车组前方会形成压缩波和膨胀波,导致动车组的车体和车下设备舱受到比明线运行更大更复杂的压力负载,影响高速动车组运行的安全性和稳定性。高速动车组的车体和车下设备舱结构设计,需要预知高速动车组进入隧道运行工况下车体和设备舱的最大压力负载。本文基于350km/h高速动车组3辆编组简化三维计算模型,仿真计算350km/h高速动车组进入隧道运行工况,高速动车组车体和车下设备舱外表面的压力分布。研究350km/h高速动车组进入隧道运行工况,高速动车组车体和车下设备舱外表面的压力变化和最大压力负载。研究结论为:350km/h高速动车组进入隧道运行,车头前端外表面最大压力为7567Pa,设备舱前端板外表面最大压力为-5569.4Pa,设备舱裙板外表面最大压力为-5690.1Pa,设备舱底板外表面最大压力为-6590.7Pa。
When high-speed EMU runs into tunnels,the front of the EMU will have pressure wave and expansion wave,which make the carbody and the underframe equipment compartment facing bigger and more complex pressure load than open line,and this will have impact on the safety and stability of the running of high-speed EMU.The structural design of the carbody and underframe equipment compartment should consider the max pressure load generated by the EMU running in tunnel.This paper is based on the simplified 3D calculation model of the 3-car high-speed EMU of 350km/h,to do the simulating calculation of the pressure distribution on the surface of the carbody and underframe equipment compartment of the 350km/h high-speed EMU running in tunnel.This paper researches the changes of the pressure and the max pressure load on the carbody and underframe equipment compartment of 350km/h high-speed EMU running in tunnel.The conclusion of the research is:When the 350km/h high-speed EMU is running in tunnel,the max pressure on the head of the 3-car calculation model is 7567Pa,and the max pressure on the outer surface of the front cover the underframe equipment compartment is-5569.4Pa,and the max pressure on the outer surface of the side cover of the underframe equipment compartment is-5690.1Pa,and the max pressure on the outer surface of the under cover of the underframe equipment compartment is-6590.7Pa.
作者
杜秋男
DU Qiu-nan(Shanghai CRC Rail Transportation Equipment Co.,Ltd.,Shanghai 200245,China)
出处
《内燃机与配件》
2020年第7期24-27,共4页
Internal Combustion Engine & Parts
关键词
动车组
隧道
设备舱
压力
EMU
tunnel
equipment compartment
pressure
