基于生命周期评价的井干式木结构建筑环境影响研究

发布时间：2018-12-16 19:17

【摘要】：分析了井干式木结构的环境影响,为木结构建筑企业的节能减排提供参考。基于生命周期评价方法,根据工厂搜集的基础数据清单,采用Ga Bi 6.0软件分析了1 m2井干式木结构产品物化过程(从原材料开采到产品出厂的生命周期)中的原材料消耗、能源消耗以及对环境的污染排放,并利用软件提供的CML2001方法和数据库评价了井干式木结构产品生命周期范围内造成的环境影响。结果表明:制造1 m2井干式木结构产品,全球变暖潜值、人体毒性、非生物资源耗竭、环境酸化、光化学臭氧生成潜力和富营养化的加权后结果依次为-7.54×10~(-8),7.19×10~(-8),1.79×10~(-8),1.51×10~(-8),9.94×10~(-9)和3.79×10~(-9)。其中,全球变暖潜值和人体毒性是墙体产品环境影响的主要类型,分别占环境影响总值的-174.0%和166.0%。木结构产品从原材料获取到产品出厂可分为原材料获取、预制和运输过程3个子系统,而预制过程为环境影响的主要阶段。除去原材料获取过程中木材固定大量CO2对环境的积极影响,在环境污染方面,人体毒性占总环境影响的166.0%,为污染的绝大部分,主要由原木加工、锯材干燥、地板加工和墙体加工等工艺产生的粉尘而导致。
[Abstract]:The environmental impact of drywood structure is analyzed to provide reference for energy saving and emission reduction of wood structure construction enterprises. Based on the method of life cycle evaluation and the list of basic data collected by the factory, the consumption of raw materials in the physical and chemical process (from raw material mining to product life cycle) of dry-type wood structure products of 1m2 well was analyzed by Ga Bi 6.0 software. Energy consumption and environmental pollution emission were used to evaluate the environmental impact in the life cycle of dry-wood well structure products by using the CML2001 method and database provided by the software. The results showed that the weighted results of dry-wood structure products, global warming potential, human toxicity, depletion of abiotic resources, environmental acidification, photochemical ozone formation potential and eutrophication were -7.54 脳 10 ~ (-8), respectively. 7.19 脳 10 ~ (-8), 1.79 脳 10 ~ (-8), 1.51 脳 10 ~ (-8), 9.94 脳 10 ~ (-9) and 3.79 脳 10 ~ (-9). Among them, global warming potential and human toxicity are the main types of environmental impact of wall products, accounting for -174.0% and 166.0% of the total value of environmental impact, respectively. The wood structure products can be divided into three subsystems: raw material acquisition, prefabrication and transportation from raw material to factory, and the prefabrication process is the main stage of environmental impact. Apart from the positive effects of a large amount of CO2 fixed by wood during the acquisition of raw materials on the environment, in terms of environmental pollution, human toxicity accounts for 166.0% of the total environmental impact. It is the vast majority of the pollution, which is mainly processed by logs and dried by sawn timber. Floor processing and wall processing and other processes caused by dust.
【作者单位】：生物质材料科学与技术教育部重点实验室(东北林业大学);
【基金】：“十二五”国家科技支撑计划项目(2015BAD14B0501)
【分类号】：TU366.2;X820.3

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