Research On Optimal Design Strategy Of Lighting And Shading For Small And Medium-sized Railway Stations Based On Performance Driven

In recent years,with the continuous expansion of the railway network planning,the number of railway stations,especially the small and medium-sized stations is growing gradually.And the increasingly convenient railway system makes passengers have an ever-increasing quality and requirements for the comfort of traffic space.At the same time,the long-term goal of comprehensively promoting the construction and development of green railways also poses challenges to the energy-saving and emission reduction of railway station space.As one of the public buildings with large base stock,railway station generally face the problems of high energy consumption and poor comfort due to their large volume,large flow of people,and year-round operation.While previous studies have shown that forms of architectural lighting and shading strategies can not be underestimated to improve the comfort of indoor light environment and building energy consumption.Therefore,according to the climate characteristic of different areas in China,how to improve the quality of the indoor light environment on the basis of reducing building energy consumption through appropriate lighting and shading design strategy,has important practical significance.Based on the current situation of indoor physical environment of the existing stations,this paper conducts an field survey on three typical high-speed railway stations in hot summer areas,summarizes and analyzes the actual situation and shortcomings of railway stations.Based on this,the paper explores the influence mechanism of lighting strategy and shading strategy on indoor light comfort and building energy consumption of the station.In the research process,Ladybug +Honeybee,a simulation analysis software,was used to simulate indoor natural lighting of standard station models in different windows and skylights at first,and the influence of window-wall ratio,window size,skylight forms and other factors on indoor light environment was explored.Secondly,the indoor light environment and the annual cooling,heating,lighting and total energy consumption of the standard station model under different shading conditions were simulated and analyzed in terms of east,south and west orientations.The influence mechanism of lighting shading form design strategy on indoor light environment and building energy consumption of small and medium-sized railway station under different working conditions in hot summer area is analyzed and summarized.Finally,with the actual station as an example,combined with parametric platform,driven by physical performance with the goal of reducing the total energy consumption throughout the year and improving the effect of natural lighting,the optimization of lighting and shading methods for specific cases is carried out,and the indoor natural lighting situation and annual building energy consumption before and after optimization are compared to verify the feasibility of the design strategy,so as to provide theoretical basis and guidance strategy for the actual engineering design.Based on the above research,this paper aims to put forward lighting and shading design strategies for small and medium-sized railway station houses in hot summer areas,so as to solve the contradiction between the growing demand for indoor environment comfort and energy conservation and emission reduction,and to assist architects to consider problems from a more comprehensive perspective in the design stage of highspeed railway station houses.