我国钢制品消费结构对其平均使用寿命的影响效应分析

摘要

基于2013~2015年我国下游行业钢制品的消费量和使用年限,运用对数平均迪氏分解法对我国钢制品的使用寿命进行因素分解.结果表明:2013~2015年我国钢制品平均使用寿命分别为22.27、22.24和22.11年,呈逐年下降趋势;消费行业中,除能源、 交通和房屋建设以外的其他土木工程以及铁路行业影响效应居于前两位,分别为163%和-155%,家电最小,仅为-3%,正值表示影响因素对钢制品平均使用寿命的下降为促进作用,负值则表示抑制作用;因钢材消费结构变化间接导致的钢材损耗量为508万t,约占2013年主要钢材消费量的0.74%.%Based on China 's downstream steel industrial steel consumption quantity and service life during 2013 and 2015, the average life of the steel products in China was analyzed through logarithmic mean Divisia index method. The results showed that the average service life of the steel products in China is 22. 27, 22. 24 and 22. 1 years respectively from 2013 to 2015, showing a declining trend year by year. In the consumption structure, other civil engineering besides energy, transportation and housing construction and railway industry are in the top two ranks. They are 163%and -155% respectively. Effect of the appliance industry is the smallest, only -3%. The positive values indicate a promotion effect on the decline of the average service life of the steel products, while the negative values show an inhibition effect. Changes in the consumption structure indirectly led to a loss of 5. 08 million tons of steel, being about 0. 74% of the major steel consumption in 2013.