铁道科学与工程学报2018，Vol.15Issue(2)：276-284,9.
隧道结构内列车风荷载下接触网系统的风致振动响应
Vibrating response of overhead contact system (OCS) under loading of slipstreams induced of high speed train (HST) traveling through tunnel
摘要
Abstract
This paper focuses on the vibrating response of OCS under slipstream loading. The calculation model composed of HST, OCS, tunnel structure and air was established, and the dynamic displacement, stresses and acceleration of both OCS and tunnel lining were analyzed based on fluid-structure interaction. The results suggest that: the leading direction of swung is to and fro along tunnel length, followed along the transverse of tunnel and then relative twist around the davit supporting OCS. Both the amplitude variation and duration of dynamic displacement, stresses and acceleration either OCS or tunnel lining are in accordance with slipstreams of HST. OCS begins to vibrate when the slipstream emerges, intensify suddenly when train cab reaches, and roll to their maximum when train rear approaches. The arrangement in order of magnitude involving 3 direction components on the dynamic displacement, stresses and acceleration, either OCS or tunnel lining, follows: longitudinal, transverse and vertical component. The dominant frequency and the size of tunnel vibration is much less than OCS. The results can provide valuable theoretical references for structure design, maintenance and reinforcement of HSR tunnels in the future.关键词
接触网系统/流固耦合/振动响应/列车风/隧道Key words
overhead contact system (OCS)/fluid-structure interaction/vibrating response/slipstreams induced of train/tunnel分类
建筑与水利引用本文复制引用
杨伟超,何川,彭立敏,雷明锋,张平平..隧道结构内列车风荷载下接触网系统的风致振动响应[J].铁道科学与工程学报,2018,15(2):276-284,9.基金项目
国家自然科学基金高铁联合基金资助项目(U1134208) （U1134208）
国家自然科学基金资助项目(51478474) （51478474）
