Research On Design Strategy Of Outdoor Activity Space In University Campus In Mianyang Area Based On Comfort

Outdoor activity space of university campus as an important place for teachers and students to relax and entertain,its comfort will directly affect the possibility and frequency of people’s use.However,in the current planning and design of campus outdoor activity spaces,the importance of environmental comfort has not been given enough attention,so relevant research is urgently needed to give some guidance.This thesis mainly studies the thermal comfort optimization design of the micro-climate of the outdoor activity space of the Southwest University of Science and Technology in Mianyang area.And based on a series of methods such as field measurement,questionnaire survey,computer software simulation.Understand the thermal environment characteristics of the outdoor activity space of the university campus in Mianyang area in the two extreme seasons of winter and summer,and the thermal comfort and thermal acceptability range of the crowd.Through comparative analysis to explore the influence of different planning and design factors on the outdoor thermal environment,and construct a climate adaptive optimization strategy.This thesis focuses on the following three tasks:(1)Field measurement research on the thermal environment of outdoor campus space in Mianyang University.This thesis takes the Southwest University of Science and Technology campus located in Mianyang,Sichuan as the main research object.Through field microclimate tests and the issue of thermal comfort questionnaires in winter and summer,obtained a large number of measured climate data for campus thermal environments and 523 population comfort questionnaires.And also,this thesis summarizes the main characteristics of the microclimate of the outdoor activity space on campus in Mianyang area,as well as people’s thermal sensations and thermal comfort regulation.(2)Research on thermal comfort range of outdoor activity space crowd in Mianyang area.In this thesis,physiologically equivalent temperature(PET)is used as an indicator,based on outdoor microclimate measured data,combined with a thermal comfort field survey questionnaire,and linear regression analysis is used to establish the human thermal sensation,thermal comfort,and 80% people’s thermal acceptance percentage evaluation model.Through the analysis of the model,the thermal neutral temperature(23.5℃ in winter and 22.8℃ in summer),thermal comfort temperature(30.4℃ in winter),and the 80% people’s thermal acceptable temperature range in Mianyang area(PET ≥15.7℃ in winter,PET≤40.3℃ in summer,15.4℃ ≤PET≤40.9℃ in total year).(3)Research on thermal comfort optimization design strategy for outdoor activity space of university campus in mianyang based on ENVI-met thermal environment simulation software.This section is based on field measurements of thermal environment of outdoor activity spaces on the university campus and the research of thermal comfort range in Mianyang area.Take the No.4 measurement point where summer PET deviates far from 80% people’s thermal acceptable temperature range as an example,using ENVI-Met thermal environment simulation software simulates the impact of three different planning and design elements(ground surface type,tree area and water body area,)on the thermal environment.In order to quantitatively analyze the influence of different planning and design elements on the thermal environment comfort of the campus outdoor activity space in Mianyang area.Finally,three improvement strategies based on thermal comfort optimization design are given,namely: the choice of the ground surface material,the application of the shading system,and the arrangement of the water body.This study effectively links outdoor thermal comfort research with planning and design research.The results provide reference guidance for the planning and design of outdoor activity spaces in the campus of Mianyang,and are complementary to the theory and methods of campus planning and design.