Experimental and numerical investigation of braking energy on thermal environment of underground subway station in China's northern severe cold regions

This paper selected representative soft site along the subway lines and created two-dimensional overall finite element analysis model about nonlinear dynamic interaction among soil, underground subway station, and ground structure based on Nanjing underground subway station. It explored the seismic response influence of neighboring high-rise structure on the two-layer and three-span island-type underground subway stations. The results showed that the structure near the subway station had a significant constraint effect on the deformation of subway station which is oriented to the structure, and the influence of deformation of subway station which is backward to the structure is related to vibration characteristics of the soil-underground structure interaction system. The influence of neighboring ground structure on the strain stress response of subway station is useful in most part of important nodes. However, this influence is disadvantageous in the outer part of connections of side walls and plates and middle plate-interior column connections.

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Study on the influence of closely crossing tunnel on existing underground subway station by 3D-FEM models

Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art ◽

10.1201/9780429424441-650 ◽

2019 ◽

pp. 6140-6150

Author(s):

M.H. Sadaghiani ◽

M.R. Asgarpanah

Keyword(s):

Subway Station ◽

3D Fem ◽

Underground Subway Station

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Instrumentation used to control excavation and rock bolting for underground subway station

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts ◽

10.1016/0148-9062(82)91747-8 ◽

1982 ◽

Vol 19 (2) ◽

pp. 32

Keyword(s):

Subway Station ◽

Rock Bolting ◽

Underground Subway Station

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Current Situation and Improving Strategies for Northeast China's Rural Housings

Open House International ◽

10.1108/ohi-04-2017-b0009 ◽

2017 ◽

Vol 42 (4) ◽

pp. 70-77

Author(s):

Teng Shao ◽

Hong Jin ◽

Lihua Zhao

Keyword(s):

Thermal Environment ◽

Heating System ◽

Building Energy ◽

Energy Utilization ◽

Rural Housing ◽

Cold Regions ◽

Housing Design ◽

Integral Development ◽

Functional Layout ◽

Resource Status

According to the survey and measurement on rural housing in the Northeast severe cold regions of China, this paper analyzed the existing situation and problems of current rural housing in terms of integral development, functional layout, envelop structure, interior thermal environment, heating system and energy utilization etc.. Based on the climatic features of severe cold regions, as well as rural financial and technical conditions, living and production mode, residential construction characteristics and existing resource status etc., the feasible approaches of achieving building energy saving has been proposed, thus acting as a guidance for new rural housing design in severe cold regions.

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The Effects of Different Space Forms in Residential Areas on Outdoor Thermal Comfort in Severe Cold Regions of China

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16203960 ◽

2019 ◽

Vol 16 (20) ◽

pp. 3960 ◽

Cited By ~ 2

Author(s):

Zheming Liu ◽

Yumeng Jin ◽

Hong Jin

Keyword(s):

Thermal Comfort ◽

Thermal Environment ◽

Residential Areas ◽

The South ◽

Cold Regions ◽

Space Forms ◽

Transition Season ◽

Outdoor Spaces ◽

Outdoor Space ◽

Comfort Condition

In the context of global climate change and accelerated urbanization, the deterioration of the urban living environment has had a serious negative impact on the life of residents. However, studies on the effects of forms and configurations of outdoor spaces in residential areas on the outdoor thermal environment based on the particularity of climate in severe cold regions are very limited. Through field measurements of the thermal environment at the pedestrian level in the outdoor space of residential areas in three seasons (summer, the transition season and winter) in Harbin, China, this study explored the effects of forms and configurations of three typical outdoor spaces (the linear block, the enclosed block, and the square) on the thermal environment and thermal comfort using the Physiologically Equivalent Temperature (PET). The results show that the thermal environment of all outdoor space forms was relatively comfortable in the transition season but was uncomfortable in summer and winter. The full-enclosed block with a lower sky view factor (SVF) had a higher thermal comfort condition in summer and winter. The linear block with higher buildings and wider south–north spacing had a higher thermal comfort condition in summer and winter. When the buildings on the south side were lower and the south–north spacing was wider, the thermal environment of the square was more comfortable in winter.

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Risk Analysis and Control Factors Based on Excavation of a Large Underground Subway Station under Construction

Symmetry ◽

10.3390/sym12101629 ◽

2020 ◽

Vol 12 (10) ◽

pp. 1629

Author(s):

Zhien Zhang ◽

Mingli Huang ◽

Baohua Wu

Keyword(s):

Large Scale ◽

Complex Structure ◽

Subway Station ◽

Multidimensional Space ◽

Large Space ◽

Control Factors ◽

Underground Subway Station ◽

Subway Stations ◽

Under Construction ◽

And Control

Considering the convenience of pedestrian transfer, reasonable structural stress and beautiful shape design, most subway stations adopt symmetrical design. At present, the new subway station is developing in the direction of a multidimensional space, as well as a large scale, and complex structure. Tunnel construction also presents unpredictability, coupling amplification and high risks. For example, a subway extension project involves construction, which would affect the normal use of the subway or damage its structure. Based on excavation of the largest underground subway station under construction in China, the Erligou station extension project (line 16 of Beijing Metro), and using theoretical analysis, numerical simulation, monitoring data, and other research methods, this paper quantitatively analyzes the risk of a large space station’s construction process on the adjacent existing station structure and track, as well as highlights key, high-risk sub-projects, or construction steps, combined with specific engineering measures to ensure safety during construction of a new station. The general rules concerning large space subway station construction are further summarized to provide reference for similar projects.

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