scholarly journals Environmental Footprints of High-Speed Railway Construction in China: A Case Study of the Beijing–Tianjin Line

2019 ◽  
Vol 17 (1) ◽  
pp. 105 ◽  
Author(s):  
Jianyi Lin ◽  
Shihui Cheng ◽  
Huimei Li ◽  
Dewei Yang ◽  
Tao Lin
Keyword(s):  
Environmental Impacts ◽  
High Speed ◽  
Production Efficiency ◽  
Assessment Method ◽  
Pollutant Emissions ◽  
Transport Equipment ◽  
High Speed Railway ◽  
Environmental Footprints ◽  
Rolling Industry ◽  
Equipment Manufacturing

The environmental footprints of China’s high-speed railway (HSR) have attracted much attention nationally and internationally. Although there is some research focusing on CO2 emissions, a comprehensive environmental impacts assessment of HSR construction is still lacking. In this study, the emissions of the Beijing–Tianjin intercity HSR line was calculated using a hybrid input–output life cycle assessment method to quantify the environmental impacts of HSR throughout its construction. The environmental footprints during the construction stage were analyzed in terms of different subsystems and sectors. The results showed that bridges contribute the largest environmental footprints at approximately 60%, followed by rail and electric multiple unit (EMU) systems. The top three sectors that contribute to pollutant emissions are the metal smelting and rolling industry, transport equipment manufacturing, and non-metallic mineral production. CO2 and NOx are the major pollutants directly emitted by site equipment operation. More chemical oxygen demand (COD), total phosphorus (TP), total nitrogen (TN), and petroleum are emitted in EMU production than in rail construction, while NH3-N is emitted more in rails instead. Cd, Pb, As, and Hg are the significant pollutants in the metal smelting and rolling industry, whereas Cr, Cu, and Zn are the main heavy metal emissions in the transport equipment manufacturing sector. Heavy metals are the main types of environmental footprints in bridges, stations, and electric systems. Water pollutants are the main environmental impacts for rail and EMU systems, and the emissions of air pollutants are significant in subgrades. The production efficiency of upstream materials, desulfurization and denitration in fossil combustion, and the length of the bridge construction should be considered for an HSR under construction, in order to become environmentally friendly and sustainable.

Impacts of high-speed railway on the industrial pollution emissions in China

Kybernetes ◽  
2020 ◽  
Vol 49 (11) ◽  
pp. 2713-2735 ◽  
Author(s):  
Xiaomin Fan ◽  
Yingzhi Xu ◽  
Yongqing Nan ◽  
Baoli Li ◽  
Haiya Cai
Keyword(s):  
Environmental Effects ◽  
Industrial Pollution ◽  
High Speed ◽  
Assessment Method ◽  
Economic Effects ◽  
High Speed Railway ◽  
Central Cities ◽  
Content Type ◽  
Pollution Emissions ◽  
The Impact

Purpose The purpose of this paper is to analyse the impact of high-speed railway (HSR) on industrial pollution emissions using the data for 285 prefecture-level cities in China from 2004 to 2016. Design/methodology/approach The research method used in this paper is the multi-period difference-in-differences (DID) model, which is an effective policy effect assessment method. To further address the issue of endogeneity, the DID integrated with the propensity score matching (PSM-DID) approach is employed to eliminate the potential self-selection bias. Findings The results show that the HSR has significantly reduced industrial pollution emissions, which is validated by several robustness tests. Compared with peripheral cities, HSR exerts a greater impact on industrial pollution emissions in central cities. In addition, the mechanism test reveals that the optimised allocation of inter-city industries is an important channel for HSR to mitigate industrial pollution emissions, and this is closely related to the location of HSR stations. Originality/value Previous studies have paid more attention to evaluating the economic effects of HSR, however, most of these studies overlook its environmental effects. Consequently, the impact of HSR on industrial pollution emissions is led by using multi-period DID models in this paper, in which the environmental effects are measured. The results of this paper can provide a reference for the pollution reduction policies and also the coordinated development of economic growth and environmental quality.

Risk Assessment Method for High-Speed Railway Track Based on Dynamically Weighted Acceleration

2021 ◽  
Vol 27 (4) ◽  
pp. 04021030
Author(s):  
Xiaohui Wang ◽  
Jianwei Yang ◽  
Jinhai Wang ◽  
Yanxue Wang ◽  
Fu Liu
Keyword(s):  
Risk Assessment ◽  
High Speed ◽  
Assessment Method ◽  
Railway Track ◽  
High Speed Railway ◽  
Risk Assessment Method

Research on the Key Technology in Steam Curing for 32m Simple-Supported Box Girder of High-Speed Railway

2011 ◽  
Vol 90-93 ◽  
pp. 958-963
Author(s):  
Xue Min Li ◽  
Er Yu Zhu ◽  
Yong Zheng Zhou ◽  
Yue Hong Qin
Keyword(s):  
Temperature Control ◽  
High Speed ◽  
Production Efficiency ◽  
Temperature Control System ◽  
Box Girders ◽  
Steam Curing ◽  
Box Girder ◽  
High Speed Railway ◽  
Simply Supported ◽  
Steam System

In the process of steam curing to high-speed railway’s simply-supported box girder, there are some problems must be faced such as the difficulty to determine steam curing system and to achieve automatic temperature control. With the construction site conditions of simple-supported box girder in Longwang beam field which is located on Shijiazhuang-Wuhan (Shi-Wu) section of Beijing-Guangzhou high-speed railway, the paper proposes the appropriate steam system for simply-supported box girders, determines the appropriate equipments, explores the temperature control system in the process of steam curing to the simply-supported box girder's concrete, and takes the temperature test of steam curing in the field. Results show that, the steam curing technology in this paper can increase the production efficiency of beam in production site, and effectively guarantee the prefabricated quality of simply-supported box girder.

scholarly journals A risk assessment method for "Eurobalise" fastening system: managing the sensor/sleeper interaction in the high-speed railway infrastructure

2020 ◽  
Vol 45 ◽  
pp. 384-393 ◽  
Author(s):  
Andrea Simone ◽  
Claudio Lantieri ◽  
Valeria Vignali ◽  
Francesco Mazzotta ◽  
Michele Carpinone ◽  
...  
Keyword(s):  
Risk Assessment ◽  
High Speed ◽  
Assessment Method ◽  
High Speed Railway ◽  
Railway Infrastructure ◽  
Risk Assessment Method

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.

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