Design method of the variable cross-section tunnel focused on improving passenger pressure comfort of trains intersecting in the tunnel

火车 横截面(物理) 结构工程 工程类 湍流 章节(排版) 计算机模拟 高速列车 变量(数学) 模拟 计算机科学 机械 运输工程 数学 物理 地图学 量子力学 地理 操作系统 数学分析
作者
Tiantian Wang,Yuechun Zhu,Xudong Tian,Fangcheng Shi,Lei Zhang,Yibin Lu
出处
期刊:Building and Environment [Elsevier BV]
卷期号:221: 109336-109336 被引量:6
标识
DOI:10.1016/j.buildenv.2022.109336
摘要

Dramatic pressure changes on train surfaces will propagate into carriages through train gaps when two trains intersect in a tunnel, which impacts passenger pressure comfort and even threatens the safety of passengers. An RNG k-ε turbulence model and sliding mesh method are used for a numerical simulation, and the results of a moving model test are adopted for the reliability of the numerical simulation. The alleviation of the interior pressure variations of a train in a variable cross-section tunnel is investigated, in which the tunnel constitutes a reduced section (the cross-sectional area is 70 m2) in the middle and two standard sections (the cross-sectional area is 100 m2 with length L) at both ends. The results indicate that when trains that include 16 carriages intersect in the variable cross-section tunnel with a length of 1450 m at 350 km/h, the interior pressure variations are alleviated with a certain L, which compared to a tunnel with only a standard section. The alleviation effect is optimal when L = 420 m, in which the maximum interior pressure variation on the 3 s time scale for the whole train decreases by 11.24%, and that of carriage 9 decreases by 13.37%. Meanwhile, the amount of tunnel excavation decreases by 12.6%. The rational design of a variable cross-section tunnel can effectively alleviate the interior pressure variations of trains intersecting in the tunnel, thus improving passenger pressure comfort. It can also reduce the construction cost of the tunnel, with significant economic and social benefits.
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
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

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
量子星尘发布了新的文献求助10
2秒前
研友_VZG7GZ应助ttttt采纳,获得10
3秒前
SKDCROOS完成签到,获得积分10
3秒前
大绿豆完成签到,获得积分10
5秒前
6秒前
Akim应助酷炫小笼包采纳,获得10
8秒前
8秒前
RA000完成签到,获得积分10
8秒前
9秒前
段启瑞发布了新的文献求助10
10秒前
为神指路完成签到,获得积分20
10秒前
ED应助芯之痕采纳,获得10
11秒前
大绿豆发布了新的文献求助30
12秒前
徐小徐发布了新的文献求助20
13秒前
Ivy完成签到,获得积分10
13秒前
14秒前
14秒前
笨笨紫霜发布了新的文献求助10
17秒前
17秒前
18秒前
wuhu发布了新的文献求助20
20秒前
20秒前
卫慕凝完成签到,获得积分10
20秒前
21秒前
fuje发布了新的文献求助10
22秒前
SYLH应助清脆的雁丝采纳,获得10
22秒前
Szhou完成签到,获得积分10
23秒前
为神指路发布了新的文献求助10
24秒前
25秒前
郑伟李完成签到,获得积分10
26秒前
嗯哼发布了新的文献求助10
28秒前
zzzxxxxxyyyyy给zzzxxxxxyyyyy的求助进行了留言
28秒前
Nicole发布了新的文献求助10
29秒前
30秒前
qqqqqq完成签到,获得积分10
31秒前
31秒前
Ava应助难过小懒虫采纳,获得10
33秒前
GT发布了新的文献求助10
34秒前
xphpyy完成签到,获得积分10
35秒前
35秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
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 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976210
求助须知:如何正确求助?哪些是违规求助? 3520366
关于积分的说明 11203088
捐赠科研通 3256965
什么是DOI,文献DOI怎么找? 1798570
邀请新用户注册赠送积分活动 877738
科研通“疑难数据库(出版商)”最低求助积分说明 806516