Results 11 to 20 of about 406 (248)

Analysis of Heat and Smoke Flow according to Platform Screen Door and Fan Conditions on Fire in Underground Platform

Advances in Civil Engineering, 2018
In this study, a three-dimensional flow analysis of underground subway station was conducted by applying ventilation mode in operation and platform screen door (PSD) opening and closing conditions on fire in underground platform.
Ju-Yeong Jung, Seung-Gu Kang, Hyuk-Jin Yoon, Kwang-Bok Shin, Jong-Kwang Lee   +4 more
doaj   +2 more sources

Surrogate-Assisted Fine Particulate Matter Exposure Assessment in an Underground Subway Station [PDF]

International Journal of Environmental Research and Public Health, 2022
With the increase in subway travelers, the air quality of underground enclosed spaces at subway stations has attracted much more attention. The study of pollutants exposure assessment, especially fine particulate matter, is important in both pollutant control and metro station design.
Liyang Liu, Hui Liu, Yiming Ma
openaire   +3 more sources

Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station [PDF]

Asian Journal of Atmospheric Environment, 2011
Adsorbent combination studies have been carried out to remove nitrogen dioxide (NO2) and volatile organic compounds (VOCs: BTEX) out of a subway environment characterized by high flow and low concentration. Optimal conditions for the high removal efficiency of the concerned target compounds were obtained through testing a series of control factors such
Youn-Suk Son, Young-Hoon Kang, Sang-Gwi Chung, Hyun Ju Park, Jo-Chun Kim   +4 more
openaire   +3 more sources

Effect of Antimicrobial Filters on Microbial Reduction in an Underground Subway Station

Aerosol and Air Quality Research
Abstract Introduction Particulate matter (PM) contains ambient bioaerosols and pathogenic microorganisms, which may exacerbate the risk of infectious respiratory health issues upon inhalation.
Sangwon Ko, Ki Hoon Park, Jae-Young Lee, Young Bong Kim   +3 more
openaire   +2 more sources

Indoor Air Quality Monitoring System for Underground Subway Stations

, 2019
The IAQ has been recognized as a significant factor in the determination of the health and welfare of people. In this study, the air quality monitoring system based on environmental sensors was implemented to display and record the data on PM10, CO2, radon concentration, temperature, and humidity.
Tae-In Hyon, Gyu-Sik Kim
openaire   +3 more sources

Numerical Simulation of Flood Intrusion Process under Malfunction of Flood Retaining Facilities in Complex Subway Stations

Buildings, 2022
In recent years, heavy rain and waterlogging accidents in subway stations have occurred many times around the world. With the comprehensive development trend of underground space, the accidents caused by flood flow intruding complex subway stations and ...
Zhiyu Lin, Shengbin Hu, Tianzhong Zhou, Youxin Zhong, Ye Zhu, Lei Shi, Hang Lin   +6 more
doaj   +1 more source

Seismic performance of single-story subway station structures with different types of intermediate columns

Yantu gongcheng xuebao, 2021
In view of the seismic weak component of the single frame type underground subway station structure, using the rectangular reinforced concrete columns, the circular reinforced concrete columns, and the proposed precast concrete-filled steel tube (CFST ...
LI Sheng 1, ZHUANG Hai-yang 1, WANG Wei 1, DONG Zheng-fang 2
doaj   +1 more source

Numerical Simulation of the Seismic Damage of Daikai Station Based on Pushover Analyses

Buildings, 2023
Numerical analysis is an important method for the study of seismic performance of underground structures. Current research on the seismic damage of Daikai station and the subway tunnel during the Great Hanshin earthquake mainly focuses on the dynamic ...
Yuefeng Yang, Juanjuan Cao, Renquan Qu, Zigang Xu   +3 more
doaj   +1 more source

Safety Problem of Gaseous Extinguishing System in Underground Subway Station [PDF]

Journal of the Korean Society of Hazard Mitigation, 2020
The gaseous fire extinguishing agents CO₂, Halon 1301, and HCFC-BLEND A and a clean fire extinguishing agent are installed and operated in 85.5%, 6.19%, 4.14%, and 4.62% of the city railroad subway stations of Korea, respectively. The fire extinguishing halon gases Halon1301 and HCFC-BLEND A currently used in city railroad subway
Hyun-Bea Hwang, Se-Hong Min
openaire   +1 more source

Elasto-plastic working states and seismic performance levels of frame-type subway underground station with two layers and three spans

Yantu gongcheng xuebao, 2019
The seismic performance of subway underground station has not been understood enough. According to the rules in the seismic codes of China, different stiffness ratios of underground structure to the surrounding soil foundation are designed.
ZHUANG Hai-yang 1, REN Jia-wei 1, WANG Rui 1, MIAO Yu 2, CHEN Guo-xing 1
doaj   +1 more source