为掌握我国城镇化进程中居住建筑使用寿命的主要影响因素,运用问卷调查法、回归分析法和SPSS软件,对16个城镇的3 480个被拆除居住建筑的有效样本,分城市化率、建造年代、经济增长率、结构形式、建筑层数、拆除原因、拆除年代、人均GDP、城镇规模等9个因素进行居住建筑使用寿命的相关性分析.结果发现:在快速城镇化进程中,居住建筑使用寿命与城镇化率、建造年代、经济增长率、人为干扰程度等社会、经济及管理因素显著或明显负相关,与人均GDP、城镇规模和拆除时间相关性不大或基本不相关,与结构耐久性、建筑层数等本应正相关的建筑自身因素显著负相关,分析结果证明了我国城镇居住建筑使用寿命随快速城镇化和经济粗放式发展而缩短的事实,揭示了居住建筑短命的机理.
To find out the main influence factors of residential buildings service life under urbanization, with questionnaire survey, regression analysis and SPSS software as research tools, 3840 demolished residential buildings from 16 cities are analyzed as samples in terms of construction time, economic growth rate, structural form, buildings stories, demolition reason, demolition time, Per Capita GDP and city scale. The result shows negative correlation exists between residential buildings service life and social-economic factors like urbanization degree, construction time, economic growth rate and human disturbance. No obvious relevance found among service life, Per Capita GDP, city scale and demolition time. Interestingly, negative correlation exists between building service life and the factors like structure durability and building stories, which are supposed to show positive correlation.The study verifies the fact that residential buildings service life shortens with rapid urbanization and extensive economic development, the causes for short-lived buildings are also found.