Single Opening Tunnel Hood Parameter Sensitive Research

when high-speed train passing through tunnel, the micro-pressure wave noise will be created at tunnel exit, which worsening the living environmental condition along the railway line. Building hood at tunnel entrance is an effective method for solving this problem. In this paper, using numeral simulation method, the efficiency of single opening tunnel hood relieving micro-pressure wave noise was researched, the sensitive of hood opening parameter, such as opening ratio, ratio of length and width, was analyzed. In the end, the tunnel hood optimizing parameters was drawn out, which will play an important guiding role for high-speed railway tunnel hood design.

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Fatigue damage and residual life of secondary lining of high-speed railway tunnel under aerodynamic pressure wave

Tunnelling and Underground Space Technology ◽

10.1016/j.tust.2021.103851 ◽

2021 ◽

Vol 111 ◽

pp. 103851

Author(s):

Jianming Du ◽

Qian Fang ◽

Gan Wang ◽

Dingli Zhang ◽

Tielin Chen

Keyword(s):

Fatigue Damage ◽

Pressure Wave ◽

High Speed ◽

Residual Life ◽

Railway Tunnel ◽

High Speed Railway ◽

Aerodynamic Pressure ◽

Secondary Lining

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Typical Portal Structure for Single Track High Speed Railway Tunnel in Rugged Mountainous Area with High and Abrupt Slope

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.342 ◽

2014 ◽

Vol 716-717 ◽

pp. 342-346

Author(s):

Xiao Jun Zhou ◽

Bo Jiang ◽

Yue Feng Zhou ◽

Yu Yu

Keyword(s):

High Speed ◽

Southwest China ◽

Earth Pressure ◽

Mountainous Area ◽

Single Track ◽

Railway Tunnel ◽

High Speed Railway ◽

Railway Line ◽

Bridge Abutment

On the basis of different landform and multifarious topography in rugged mountainous area in southwest China, typical tunnel portals for single track tunnels in a new high speed railway line have been presented in the paper. The portal comprises headwall, shed tunnel, bridge abutment and its support. Portal with headwall is suitable for tunnel to resist front earth pressure on high and abrupt slope. Shed tunnel is placed in front of headwall so as to prevent rockfall; its outward part is built into a flared one. Meanwhile, the installation of bridge and its abutment are also included in the portal according to landform in the paper.

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Analysis on Dynamic Transfer Characteristics of Low Geosynthetic-Reinforced Embankments Supported by CFG Piles Subjected to High-Speed Railway

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.368-373.2575 ◽

2011 ◽

Vol 368-373 ◽

pp. 2575-2580 ◽

Cited By ~ 2

Author(s):

Long Long Fu ◽

Quan Mei Gong ◽

Yang Wang

Keyword(s):

Field Test ◽

High Speed ◽

Dynamic Stress ◽

Numerical Study ◽

High Stress ◽

High Speed Train ◽

High Speed Railway ◽

Railway Line ◽

Transfer Characteristics ◽

Reinforced Embankments

To investigate the dynamic transfer characteristics of low geosynthetic-reinforced embankments supported by CFG piles under high-speed train load, a numerical study has been conducted through dynamic finite element method on basis of the dynamic field test on a cross-section of Beijing-Shanghai high-speed railway. The comparative analysis on results of numerical study and field test indicated the distribution characteristics of vertical dynamic stress induced by high-speed train load in subgrade soil under railway line. The numerical results also suggested a high stress area in subgrade where vertical dynamic stress is over 1kPa. Conclusions of this work can provide reference for both design and estimation of long-term settlement of low geosynthetic-reinforced embankments supported by CFG piles for high-speed railway.

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