基于LCA理论典型大跨径钢桥面铺装结构生命周期环境影响比较分析

Comparison on Life Cycle Environmental Impact of Typical Deck Pavement Structures Based on the LCA Theory

本文通过建立基础数据库,统计三类典型钢桥面铺装结构生命周期内资源消耗与环境影响清单;基于清单分析的结构,利用所建立的指标体系,分建设期与运营期从人类健康、资源消耗、生态健康三个方面对典型钢桥面铺装结构生命周期内的环境影响进行定量化分析;随后,从生命周期的角度,分析了三类典型钢桥面铺装结构的环境影响评价比较。通过比较发现,建设阶段三类铺装结构的环境影响差别不大;养护阶段冷拌树脂、环氧树脂能呈现出较好的环境优异性;从生命周期的角度,养护阶段所占的环境影响是最大的,产生最大的影响为能耗。

:The author has handled a great deal of statistical information to formed the environment input and output inventory of the deck pavement by establishing the basic material database of environment impact in pavement engineering.In addition,the study has also evaluated environment impact in construction phase and maintainace phase of the deck pavement in the realm of the human health,eco-system health,and resource deficiency index after establishing the assessment index system.In conclusion,there is no big difference of three typical stuctures in consturction phase,while PE has presented better performance in environmental friendly.Lastly,the maintainance phase occupies the highest weight in energy usage and emission in the life cycle of deck pavement.