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1概述随着铁路建设市场的放开,各施工企业之间的竞争越来越激烈,特别是近年来由于材料价格的上涨及工程材料价差调整方式等原因,给施工企业带来了较大的潜在风险,项目利润空间越来越小。铁路工程项目建设规模大,施工周期长,而材料费占整个工程造价60%以上,对工程成本影响较大。同时,受市场及政策因素影响,施工材料价格经常有较大幅度的变化,如按照现材料价格调差模式进行
1 Overview With the liberalization of the railway construction market, the competition among construction companies is becoming more and more intense. Especially in recent years, due to the rise of material prices and the adjustment of construction materials spread, the construction enterprises have brought a large Potential risks, project profit margins become smaller and smaller. Large-scale railway construction projects, the construction period is long, and material costs account for more than 60% of the cost of the project, a greater impact on the cost of the project. At the same time, affected by market and policy factors, the prices of construction materials often have more substantial changes, such as the current material price adjustment mode