Research On The Influence Of The Spatial Form Of High-rise Residential Districts On Building Energy Consumption In Lhasa

Under the influence of the great development of the western region and the completion of the Qinghai Tibet railway,Tibet autonomous region has developed rapidly.The urbanization process of Lhasa,the capital city,has been accelerating.The population of the city has been increasing.Attracting large numbers of foreign personnel into Lhasa to participate in city construction or tourism.The surge in housing demand has led to an increase in housing in Lhasa.With the deepening of city construction,land use is becoming increasingly tense.Against this background,the city construction in Lhasa city has been developing towards intensive development,increasing the number of residential buildings has become the choice of Tibet’s urban construction,and high-rise residential buildings are increasing in Lhasa.Due to the late start of the urban planning in Lhasa and even Tibet autonomous region,the corresponding norms for high-rise residential areas are not perfect enough,and the planning and construction of high-rise residential areas lack theoretical guidance to adapt to the actual situation of the city,which is not conducive to the demand for green development of building energy efficiency in Lhasa.Starting from reducing building energy consumption,this paper focuses on the impact of high-rise residential space form on building energy consumption,and explores the layout of high-rise residential areas suitable for Lhasa’s special geographical and climatic conditions.In this paper,the influence of the spatial form of high-rise residential areas in Lhasa on the building energy consumption is studied by means of numerical measurement,software simulation,orthogonal test and data analysis,and on this basis,a design strategy for high-rise residential district planning in Lhasa is put forward.After analyzing the principle of how space form index affects building energy consumption,the paper investigates and analyzes data of spatial patterns of 40 high-rise residential areas in Lhasa,such as floor area ratio,building density,building layer number,and so on,and extracts typical morphological characteristics of existing high-rise residential areas in Lhasa,and establishes a standard model for energy consumption simulation.The fourth chapter uses Design Builder to simulate high-rise residential areas in Lhasa,analyzes the changes of building energy consumption under different building density,spacing coefficient,vertical layout,horizontal layout,building orientation and residential area enclosure,and illustrates the impact of various indicators on building energy consumption.According to the data obtained from simulation,the correlation analysis between each morphological index and building energy consumption is made to further explain the trend of the impact of each index.In the fifth chapter,the orthogonal experiment is used to design the working conditions of multiple factors and their interaction.The working conditions are simulated according to the orthogonal experiment in the design builder.The influence of each index and its interaction on building energy consumption is determined by using the visual analysis method and variance analysis method,and the optimal residential layout scheme is determined.The planning and design strategy of high-rise residential area is proposed to reduce building energy consumption,It will provide reference for future energy saving design of high-rise residential district in Lhasa.