Research On The Optimal Design Strategy Of Building Staircase In Hot-summer & Cold-winter Area Based On Thermal Buffer Effect

As the trend of building energy saving is more and more urgent,passive energy saving methods have a wide range of application prospects.A large number of conventional spaces in the building have the potential for passive energy saving,and the staircase is one of them.In addition,hot-summer and cold-winter area requires thermal insulation in summer and winter,so that the building must meet the dual attributes of thermal insulation in terms of passive energy saving requirements.Based on the hot buffer effect in the hot-summer and cold-winter regions,this article further explores the optimal design strategy of staircase.In the introduction part,this article sorts out the theoretical and practical experience at home and abroad by collecting literature data.The second chapter is the basic theoretical research,which explores the corresponding relationship between the spatial level of the cavity space and the thermal buffer characteristics,and explains it from the aspects of space design mechanism,heat regulation mechanism,natural ventilation mechanism,and seasonal pattern.On this basis,the staircase is used as a vertical cavity,and further research should be made from the thermal insulation performance of the auxiliary transportation space,the passive pre-cooling and pre-heating of the climate boundary layer,the natural ventilation path of the cavity combination,the opening design and the seasonal adjustment mode.The third chapter is the classification of staircases in terms of space types.The staircases are divided by geometric shapes,spatial layout relations,cavity combination relations,fire protection requirements and openness,and the various classifications are interrelated.While paying attention to the division of space types,we must also pay attention to the thermal characteristics potential of each type of staircase.The fourth Chapter quantitatively analyzes and verifies the staircase’s thermal insulation performance through the measured data and computer simulation,the relationship between the staircase as climate boundary layer and passive pre-cooling and pre-heating,the relationship between the staircase cavity and the natural ventilation path,and the relationship between staircase opening design and the seasonal adjustment mode.According to the qualitative analysis and quantitative analysis in the previous chapters,the fifth chapter sorts out the stair well optimization design strategy from four aspects: space design,thermal regulation,natural ventilation path and seasonal mode,and illustrates the staircase design optimization strategy in hot-summer and cold-winter area with an example in the scheme phase of the practical project.The author collects and summarizes the general rules of cavity space,and makes a detailed and in-depth research on the vertical cavity of staircase,and draws some conclusions about the connection between space characteristics and thermal buffering characteristics,hoping to have reference value for passive energy-saving design.