Physical Environment Fieldwork

摘要

With the development of urban rail transit and the requirements of urban function, the subway station building complex mode retains important utility. While urbanization is advancing rapidly in China, the construction of rail transit is also advancing at an unprecedented speed, which also poses new challenges to the spatial design of urban rail transit buildings: on the one hand, the underground space in the metro station area often has low environmental quality, while on the other hand, transit buildings account for a large proportion of urban energy consumption, and performance-oriented sustainable design deserves attention. However, due to its complicated internal space and large flow of people, problems of space quality and comfort begin to emerge. As the space connecting urban railway traffic with building complexes in this type of integrated building, well spaces display the role of delivering air, light and heat within the space. Lying between external and interior environment, this space can utilize natural resources and the environment to adjust the indoor climatic environment and boost the quality of the space. However, well spaces in many urban subway station building complexes are confronted with such defects as inferior air quality, high wind speed and low comfort temperature. With five urban business complexes in large-scale rail transit junction stations in Beijing as an example, this research aims to conduct a comprehensive appraisal of the physical environment in well spaces during the coldest period in Beijing by assessing eight physical qualities, including air temperature, moisture, illuminance, carbon dioxide, PM2.5. PM10, HCHO and wind speed in each, gauging the physical environment of well spaces, and combining this with a questionnaire on satisfaction of people of different ages. As for issues arising from tests of the physical qualities and the questionnaire results, possible solutions for optimizing well spaces are proposed as a reference to optimize integrated design when combining urban railway transit and building complexes.