Influence of the shape and size of cavities on pressure waves inside high-speed railway tunnels

管(容器) 沉管 结构工程 振幅 工程类 压力波 航程(航空) 机械 物理 机械工程 光学 航空航天工程
作者
Daniela Heine,Klaus Ehrenfried,Helmut Kühnelt,Stefan Lachinger,Michael Rudolph,Alois Vorwagner,Florian Saliger
出处
期刊:Journal of Wind Engineering and Industrial Aerodynamics [Elsevier BV]
卷期号:189: 258-265 被引量:16
标识
DOI:10.1016/j.jweia.2019.03.032
摘要

For safety reasons, most newly built tunnels are designed as twin-tube tunnels with interconnecting tubes, so that it is possible to rescue passengers inside of one tunnel tube through the other tube in case of an emergency. The interconnections are closed towards the tunnel with safety doors. These doors have to withstand high pressure loads caused by passing pressure waves and can even be damaged because of the waves. The doors are installed in niches which are embedded in the tunnel walls. The influence of the geometry and size of these cavities on the pressure waves and consequently the loads on the doors was studied by means of moving-model rig experiments at the Tunnel Simulation Facility Göttingen. Different cavity configurations and train velocities were examined regarding the loads on a generic door. Furthermore, numerical simulations were performed in order to extend the parameter range, e.g. the tunnel length, and to compare with the experimental results. Although the niches were assumed to reduce the pressure loads on the door, it was found that the pressure at the doors and therefore the loads were increased. The reason for this increase were pressure waves generated due to reflections at both ends of the cavity and the tunnel entry. The waves superpose with the initial wave leading to high pressure amplitudes.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
高大豌豆发布了新的文献求助10
1秒前
梨凉完成签到,获得积分10
3秒前
student发布了新的文献求助10
3秒前
6秒前
搜集达人应助水濑心源采纳,获得10
6秒前
669完成签到,获得积分10
7秒前
沙田的柚子完成签到 ,获得积分10
8秒前
惜寒完成签到 ,获得积分10
9秒前
9秒前
Behappy完成签到 ,获得积分10
10秒前
咖飞完成签到,获得积分10
10秒前
瑾玉完成签到,获得积分10
11秒前
成就的白羊完成签到,获得积分10
12秒前
wanli445完成签到,获得积分10
13秒前
azixiao完成签到,获得积分10
14秒前
八轩发布了新的文献求助10
15秒前
香蕉觅云应助科研通管家采纳,获得10
16秒前
科研通AI5应助科研通管家采纳,获得30
16秒前
领导范儿应助科研通管家采纳,获得10
16秒前
斯文败类应助科研通管家采纳,获得10
16秒前
HuFan1201完成签到 ,获得积分10
16秒前
1+1应助科研通管家采纳,获得10
16秒前
1351567822应助科研通管家采纳,获得50
16秒前
16秒前
奋斗的凡完成签到 ,获得积分10
16秒前
科研通AI5应助科研通管家采纳,获得10
16秒前
科研通AI2S应助科研通管家采纳,获得10
16秒前
Orange应助科研通管家采纳,获得10
16秒前
大模型应助科研通管家采纳,获得10
16秒前
彭于晏应助科研通管家采纳,获得10
16秒前
bkagyin应助科研通管家采纳,获得10
16秒前
打打应助科研通管家采纳,获得10
16秒前
1+1应助科研通管家采纳,获得10
16秒前
HEIKU举报leaf求助涉嫌违规
16秒前
科研通AI5应助科研通管家采纳,获得10
16秒前
领导范儿应助科研通管家采纳,获得10
16秒前
Akim应助科研通管家采纳,获得10
17秒前
研友_Z6Q45n应助科研通管家采纳,获得10
17秒前
1+1应助科研通管家采纳,获得10
17秒前
科研通AI5应助科研通管家采纳,获得10
17秒前
高分求助中
Production Logging: Theoretical and Interpretive Elements 2700
Neuromuscular and Electrodiagnostic Medicine Board Review 1000
こんなに痛いのにどうして「なんでもない」と医者にいわれてしまうのでしょうか 510
The First Nuclear Era: The Life and Times of a Technological Fixer 500
Unusual formation of 4-diazo-3-nitriminopyrazoles upon acid nitration of pyrazolo[3,4-d][1,2,3]triazoles 500
岡本唐貴自伝的回想画集 500
Distinct Aggregation Behaviors and Rheological Responses of Two Terminally Functionalized Polyisoprenes with Different Quadruple Hydrogen Bonding Motifs 450
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3671619
求助须知:如何正确求助?哪些是违规求助? 3228325
关于积分的说明 9779523
捐赠科研通 2938636
什么是DOI,文献DOI怎么找? 1610158
邀请新用户注册赠送积分活动 760547
科研通“疑难数据库(出版商)”最低求助积分说明 736093