Risk Assessment of High-Speed Railway Tunnel Construction Based on Fuzzy Synthetic Evaluation

2012 ◽  
Vol 594-597 ◽  
pp. 1251-1256
Author(s):  
Li Wu ◽  
Liang Gang Zhang ◽  
Yun Lai ◽  
Jian Chen
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Evaluation Index System ◽  
Tunnel Construction ◽  
Fuzzy Synthetic Evaluation ◽  
Railway Tunnel ◽  
Analytic Hierarchy ◽  
High Speed Railway ◽  
Construction Risk ◽  
Synthetic Evaluation

Because of its large scale, long cycle and complex construction, the high speed railway tunnel construction exists many uncertain risk factors which are random and fuzzy, that makes it difficult to do quantitative analysis by general research methods. A synthetic evaluation index system for tunnel construction risk of high-speed railway is established by analyzing the factors that influence high-speed railway construction, and the analytic hierarchy process is used to determine the weight of each stage factor. Based on the hierarchy of each factor, a model of three-stage fuzzy synthetic evaluation is proposed, the fuzzy sets method is used to determine membership function, and risk ranking is also classified. The proposed method is applied to a Tian jiashan Tunnel construction of Shanghai-Kunming (Hu-Kun) high-speed railway. The analysis results show that the method is reasonable and practical, and it will be taken as an example by other similar projects.

Study on Construction Risk Assessment Method of Deep Buried Tunnels

2013 ◽  
Vol 405-408 ◽  
pp. 1305-1308
Author(s):  
Xing Kuang ◽  
Di Qing Yi ◽  
Cheng Liang Wang
Keyword(s):  
Risk Assessment ◽  
High Speed ◽  
Assessment Method ◽  
Risk Identification ◽  
Tunnel Construction ◽  
Construction Process ◽  
Railway Tunnel ◽  
High Speed Railway ◽  
Risk Assessment Method ◽  
Construction Risk

High speed railway tunnel have many uncertainty hazard factors in construction, at the stage of construction drawing design and during tunnel construction process. Taking no.1 tunnel in Xuefeng Mountain as a deep buried tunnel in the paper, tunnel construction risk source and main risk identification are analysis, main risk assessment during construction is recognized and reference for other similar projects is provided.

Fuzzy Synthetic Evaluation for Aviation Maintenance Support Ability

2013 ◽  
Vol 307 ◽  
pp. 429-432
Author(s):  
Xu Sheng Gan ◽  
Jing Shun Duanmu ◽  
Jian Guo Gao
Keyword(s):  
Support System ◽  
Evaluation Method ◽  
Influence Factor ◽  
Evaluation Model ◽  
Evaluation Index System ◽  
Fuzzy Synthetic Evaluation ◽  
Analytic Hierarchy ◽  
Good Decision ◽  
Aviation Maintenance ◽  
Synthetic Evaluation

To improve the evaluation level for aviation maintenance support system and provide a good decision-making for aircraft maintenance support, a quantitative evaluation method for aviation maintenance support ability is proposed. first the evaluation index system for aviation maintenance support ability is given on the basis of factor analysis for aviation maintenance support system, and then using Analytic Hierarchy Process to determine the weight of each influence factor, finally, based on fuzzy mathematics method, the three-level fuzzy synthetic evaluation model is established. The actual example validates is feasibility and effectiveness.

scholarly journals Development and Application of Mechanized Matching Equipment for High-Speed Railway Tunnel Construction

2019 ◽  
Vol 32 ◽  
pp. 952-959
Author(s):  
Heng Zhang ◽  
Jianchun Sun ◽  
Hui Ma ◽  
Shougen Chen ◽  
Muyan Huang
Keyword(s):  
High Speed ◽  
Tunnel Construction ◽  
Railway Tunnel ◽  
High Speed Railway

Structures and Settlement Control of Yujingshan High-Speed Railway Tunnel Crossing Massive Rockfill in a Giant Karst Cave

2021 ◽  
pp. 036119812110624
Author(s):  
Yipeng Xie ◽  
Junsheng Yang ◽  
Cong Zhang ◽  
Jinyang Fu
Keyword(s):  
High Speed ◽  
Large Scale ◽  
Three Dimensional ◽  
Railway Tunnel ◽  
High Speed Railway ◽  
Settlement Behavior ◽  
Underground River ◽  
Convergence Trend ◽  
Dimensional Coupling

The Yujingshan high-speed railway tunnel crosses a giant cavern system with a 108 × 104 m3 volume chamber and an 18 km long underground river. The massive project, which lasted three years, was eventually awarded the “Overcoming the Challenges” award by the International Tunneling and Underground Space Association (ITA) in 2020. However, since the cave chamber was filled with large-scale rockfill, structural settlement is a non-negligible problem. This paper presents the unique structures of a bridge supporting railway tracks wrapped by tunnel lining and the settlement control of the Yujingshan tunnel crossing massive rockfill in the giant cave. The geological characteristics and design considerations are systematically introduced. A three-dimensional coupling discrete element method (DEM) and finite difference method (FDM) numerical model and 13 months of long-term settlement monitoring were conducted to evaluate the settlement behavior. The results indicate that the morphology of cavern and internal deposits caused the whole rockfill to migrate to the lower left. The tunnel structure consequently developed a significant inclined settlement. The continuous construction load would increase the settlement value by 31.4%. The bottom reinforcement of steel-pipe pile with grouting could effectively inhibit settlement and differential settlement. Considering the simulation results, the tunnel bottom had greater settlement than the limit standard for high-speed railway embankment, which means this special structure form is reasonable for operation. Meanwhile, the monitoring results show that the tunnel bottom settlement in D3K279+891~D3K279+947 had not performed an apparent convergence trend after 13 months. Further structural monitoring and compensation grouting should be actively considered for operation maintenance.

Investigation of a loess-mudstone landslide and the induced structural damage in a high-speed railway tunnel

2020 ◽  
Vol 79 (5) ◽  
pp. 2201-2212
Author(s):  
Shunhua Zhou ◽  
Zhiyao Tian ◽  
Honggui Di ◽  
Peijun Guo ◽  
Longlong Fu
Keyword(s):  
Structural Damage ◽  
High Speed ◽  
Railway Tunnel ◽  
High Speed Railway
Sign in / Sign up

Export Citation Format

Share Document